Summary | ZeroBOX

Category	Machine	Started	Completed
FILE	s1_win7_x6401	Aug. 11, 2023, 8:50 a.m.	Aug. 11, 2023, 8:52 a.m.

Size	824.0KB
Type	PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5	`954f8a5432fcf4567a25a5cdff191572`
SHA256	`db77d447402dda806b6817fba4b619789e8af03233d9a08414d400538b2bedbc`
CRC32	`A0E1ACF5`
ssdeep	`24576:TfRs6CE3jLMpppdpppppUO9Rs6CE3jLMpppdpppppUOMUF4T1oMeryzf1tjQT5:TfRs6CE3jLbO9Rs6CE3jLbOMNqLWT1pQ`
PDB Path	XAz4Jx.pdb
Yara	Is_DotNET_EXE - (no description) PE_Header_Zero - PE File Signature Admin_Tool_IN_Zero - Admin Tool Sysinternals IsPE32 - (no description)

gucc.exe "C:\Users\test22\AppData\Local\Temp\gucc.exe"
2620

Name	Response	Post-Analysis Lookup
No hosts contacted.

IP Address	Status	Action
164.124.101.2	Active	Moloch

Suricata Alerts

No Suricata Alerts

Suricata TLS

No Suricata TLS

Checks if process is being debugged by a debugger (2 events)

Time & API	Arguments	Status	Return	Repeated
IsDebuggerPresent Aug. 11, 2023, 8:50 a.m.			0	0
IsDebuggerPresent Aug. 11, 2023, 8:50 a.m.			0	0

Uses Windows APIs to generate a cryptographic key (3 events)

Time & API	Arguments	Status	Return
CryptExportKey Aug. 11, 2023, 8:50 a.m.	buffer: <INVALID POINTER> crypto_handle: 0x003fbdb0 flags: 0 crypto_export_handle: 0x00000000 blob_type: 6	1	1
CryptExportKey Aug. 11, 2023, 8:50 a.m.	buffer: <INVALID POINTER> crypto_handle: 0x003fb970 flags: 0 crypto_export_handle: 0x00000000 blob_type: 6	1	1
CryptExportKey Aug. 11, 2023, 8:50 a.m.	buffer: <INVALID POINTER> crypto_handle: 0x003fb970 flags: 0 crypto_export_handle: 0x00000000 blob_type: 6	1	1

This executable has a PDB path (1 event)

pdb_path

XAz4Jx.pdb

Checks amount of memory in system, this can be used to detect virtual machines that have a low amount of memory available (1 event)

Time & API	Arguments	Status	Return	Repeated
GlobalMemoryStatusEx Aug. 11, 2023, 8:50 a.m.		1	1	0

One or more processes crashed (1 event)

Time & API	Arguments	Status	Return	Repeated
__exception__ Aug. 11, 2023, 8:50 a.m.	stacktrace: CopyPDBs+0x1b552 DllCanUnloadNowInternal-0x25a85 clr+0x1b1194 @ 0x72951194 LogHelp_TerminateOnAssert+0x14061 GetPrivateContextsPerfCounters-0x53e1 clr+0x82ba1 @ 0x72822ba1 mscorlib+0x2f45a5 @ 0x71ad45a5 mscorlib+0x2f46fc @ 0x71ad46fc mscorlib+0x2f4688 @ 0x71ad4688 0xa842ee 0xa82644 0xa80e1d DllUnregisterServerInternal-0x7aa2 clr+0x2652 @ 0x727a2652 DllRegisterServerInternal+0x243 CoUninitializeEE-0xd1f5 clr+0x1264f @ 0x727b264f DllRegisterServerInternal+0xa89 CoUninitializeEE-0xc9af clr+0x12e95 @ 0x727b2e95 CoUninitializeEE+0x789b CreateAssemblyNameObject-0x63ba clr+0x270df @ 0x727c70df LogHelp_TerminateOnAssert+0x55ee GetPrivateContextsPerfCounters-0x13e54 clr+0x7412e @ 0x7281412e mscorlib+0x2f1c22 @ 0x71ad1c22 mscorlib+0x2f1b99 @ 0x71ad1b99 mscorlib+0x30e9a6 @ 0x71aee9a6 0xa8073f 0xa804b9 0xa803cd microsoft+0x129ed1 @ 0x73539ed1 microsoft+0x12ad86 @ 0x7353ad86 microsoft+0x12b191 @ 0x7353b191 0xa800bd DllUnregisterServerInternal-0x7aa2 clr+0x2652 @ 0x727a2652 DllRegisterServerInternal+0x243 CoUninitializeEE-0xd1f5 clr+0x1264f @ 0x727b264f DllRegisterServerInternal+0xa89 CoUninitializeEE-0xc9af clr+0x12e95 @ 0x727b2e95 DllGetClassObjectInternal+0x2473 CorDllMainForThunk-0x8a088 clr+0xc74ec @ 0x728674ec DllGetClassObjectInternal+0x2597 CorDllMainForThunk-0x89f64 clr+0xc7610 @ 0x72867610 CorDllMainForThunk+0x850 _CorExeMain-0x238a clr+0x151dc4 @ 0x728f1dc4 CorDllMainForThunk+0x8f3 _CorExeMain-0x22e7 clr+0x151e67 @ 0x728f1e67 CorDllMainForThunk+0xa06 _CorExeMain-0x21d4 clr+0x151f7a @ 0x728f1f7a _CorExeMain+0x1c ClrCreateManagedInstance-0x35cd clr+0x15416a @ 0x728f416a _CorExeMain+0x71 GetFileVersion-0x293a mscoreei+0xf5a3 @ 0x7415f5a3 CreateConfigStream+0x13f GetProcessExecutableHeap-0xad6 mscoree+0x7f16 @ 0x741d7f16 _CorExeMain+0x8 CreateConfigStream-0x2ff4 mscoree+0x4de3 @ 0x741d4de3 RtlInitializeExceptionChain+0x63 RtlAllocateActivationContextStack-0xa1 ntdll+0x39ed2 @ 0x76f49ed2 RtlInitializeExceptionChain+0x36 RtlAllocateActivationContextStack-0xce ntdll+0x39ea5 @ 0x76f49ea5 exception.instruction_r: c9 c2 10 00 cc cc cc cc cc 8b ff 55 8b ec 56 8b exception.symbol: RaiseException+0x58 CloseHandle-0x9 kernelbase+0xb727 exception.instruction: leave exception.module: KERNELBASE.dll exception.exception_code: 0xe0434f4e exception.offset: 46887 exception.address: 0x7597b727 registers.esp: 3729536 registers.edi: 0 registers.eax: 3729536 registers.ebp: 3729616 registers.edx: 0 registers.ebx: 4743464 registers.esi: 4230392 registers.ecx: 1129123071	1	0	0

Time & API

Arguments

Status

Return

Repeated

__exception__

Aug. 11, 2023, 8:50 a.m.

stacktrace:

CopyPDBs+0x1b552 DllCanUnloadNowInternal-0x25a85 clr+0x1b1194 @ 0x72951194
LogHelp_TerminateOnAssert+0x14061 GetPrivateContextsPerfCounters-0x53e1 clr+0x82ba1 @ 0x72822ba1
mscorlib+0x2f45a5 @ 0x71ad45a5
mscorlib+0x2f46fc @ 0x71ad46fc
mscorlib+0x2f4688 @ 0x71ad4688
0xa842ee
0xa82644
0xa80e1d
DllUnregisterServerInternal-0x7aa2 clr+0x2652 @ 0x727a2652
DllRegisterServerInternal+0x243 CoUninitializeEE-0xd1f5 clr+0x1264f @ 0x727b264f
DllRegisterServerInternal+0xa89 CoUninitializeEE-0xc9af clr+0x12e95 @ 0x727b2e95
CoUninitializeEE+0x789b CreateAssemblyNameObject-0x63ba clr+0x270df @ 0x727c70df
LogHelp_TerminateOnAssert+0x55ee GetPrivateContextsPerfCounters-0x13e54 clr+0x7412e @ 0x7281412e
mscorlib+0x2f1c22 @ 0x71ad1c22
mscorlib+0x2f1b99 @ 0x71ad1b99
mscorlib+0x30e9a6 @ 0x71aee9a6
0xa8073f
0xa804b9
0xa803cd
microsoft+0x129ed1 @ 0x73539ed1
microsoft+0x12ad86 @ 0x7353ad86
microsoft+0x12b191 @ 0x7353b191
0xa800bd
DllUnregisterServerInternal-0x7aa2 clr+0x2652 @ 0x727a2652
DllRegisterServerInternal+0x243 CoUninitializeEE-0xd1f5 clr+0x1264f @ 0x727b264f
DllRegisterServerInternal+0xa89 CoUninitializeEE-0xc9af clr+0x12e95 @ 0x727b2e95
DllGetClassObjectInternal+0x2473 CorDllMainForThunk-0x8a088 clr+0xc74ec @ 0x728674ec
DllGetClassObjectInternal+0x2597 CorDllMainForThunk-0x89f64 clr+0xc7610 @ 0x72867610
CorDllMainForThunk+0x850 _CorExeMain-0x238a clr+0x151dc4 @ 0x728f1dc4
CorDllMainForThunk+0x8f3 _CorExeMain-0x22e7 clr+0x151e67 @ 0x728f1e67
CorDllMainForThunk+0xa06 _CorExeMain-0x21d4 clr+0x151f7a @ 0x728f1f7a
_CorExeMain+0x1c ClrCreateManagedInstance-0x35cd clr+0x15416a @ 0x728f416a
_CorExeMain+0x71 GetFileVersion-0x293a mscoreei+0xf5a3 @ 0x7415f5a3
CreateConfigStream+0x13f GetProcessExecutableHeap-0xad6 mscoree+0x7f16 @ 0x741d7f16
_CorExeMain+0x8 CreateConfigStream-0x2ff4 mscoree+0x4de3 @ 0x741d4de3
RtlInitializeExceptionChain+0x63 RtlAllocateActivationContextStack-0xa1 ntdll+0x39ed2 @ 0x76f49ed2
RtlInitializeExceptionChain+0x36 RtlAllocateActivationContextStack-0xce ntdll+0x39ea5 @ 0x76f49ea5

exception.instruction_r: c9 c2 10 00 cc cc cc cc cc 8b ff 55 8b ec 56 8b
exception.symbol: RaiseException+0x58 CloseHandle-0x9 kernelbase+0xb727
exception.instruction: leave
exception.module: KERNELBASE.dll
exception.exception_code: 0xe0434f4e
exception.offset: 46887
exception.address: 0x7597b727
registers.esp: 3729536
registers.edi: 0
registers.eax: 3729536
registers.ebp: 3729616
registers.edx: 0
registers.ebx: 4743464
registers.esi: 4230392
registers.ecx: 1129123071

Allocates read-write-execute memory (usually to unpack itself) (27 events)

Time & API	Arguments	Status
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 655360 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00590000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x005f0000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtProtectVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x727a1000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x727a2000 process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 2228224 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00b50000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00d30000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00552000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00595000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0059b000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00597000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0056c000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00a80000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0055a000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0057a000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00577000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0056a000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 327680 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7ef50000 allocation_type: 1056768 (MEM_RESERVE\|MEM_TOP_DOWN) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7ef50000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7ef50000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7ef58000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 65536 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7ef40000 allocation_type: 1056768 (MEM_RESERVE\|MEM_TOP_DOWN) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x7ef40000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00576000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 12288 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00a81000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtProtectVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x6f952000 process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00a84000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Aug. 11, 2023, 8:50 a.m.	process_identifier: 2620 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0055c000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1

The binary likely contains encrypted or compressed data indicative of a packer (2 events)

section

{u'size_of_data': u'0x000cd600', u'virtual_address': u'0x00002000', u'entropy': 6.8354795517596845, u'name': u'.text', u'virtual_size': u'0x000cd434'}

entropy

6.83547955176

description

A section with a high entropy has been found

entropy

0.997571341834

description

Overall entropy of this PE file is high

gucc.exe

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