Summary | ZeroBOX

Category	Machine	Started	Completed
FILE	s1_win7_x6401	Sept. 30, 2023, 12:53 p.m.	Sept. 30, 2023, 12:58 p.m.

Size	2.5MB
Type	PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5	`d6a782cd2e4b92e06bbc8204013f3d68`
SHA256	`a3519e6c142a1a4e08f6c71b02ce3bf50b3182fdb6131da271fae77c7a4eba6f`
CRC32	`5843330D`
ssdeep	`49152:oLdSRmCAGo0rfIDYlrglqWh9iO9EMJYamBLMpLNH:oLw7A7ufLroqWh9hEuYppML`
PDB Path	®Æ<eíÔ®A\|XNÞg±AvÉðà@ô}ÍqûNlæ.ºÔ®aU]dùª ¢.ÖßO7éÏì¸ã{é°´&Ä"ZfýWoÔ`nq
Yara	PE_Header_Zero - PE File Signature IsPE32 - (no description) Is_DotNET_EXE - (no description)

RBY1.exe "C:\Users\test22\AppData\Local\Temp\RBY1.exe"
2552

Name	Response	Post-Analysis Lookup
No hosts contacted.

IP Address	Status	Action
No hosts contacted.

Suricata Alerts

No Suricata Alerts

Suricata TLS

No Suricata TLS

Queries for the computername (2 events)

Time & API	Arguments	Status	Return	Repeated
GetComputerNameA Sept. 30, 2023, 12:53 p.m.	computer_name: TEST22-PC	1	1	0
GetComputerNameW Sept. 30, 2023, 12:53 p.m.	computer_name: TEST22-PC	1	1	0

Checks if process is being debugged by a debugger (4 events)

Time & API	Arguments	Status	Return	Repeated
IsDebuggerPresent Sept. 30, 2023, 12:53 p.m.			0	0
IsDebuggerPresent Sept. 30, 2023, 12:53 p.m.			0	0
IsDebuggerPresent Sept. 30, 2023, 12:53 p.m.			0	0
IsDebuggerPresent Sept. 30, 2023, 12:53 p.m.			0	0

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

Time & API	Arguments	Status	Return
CryptExportKey Sept. 30, 2023, 12:53 p.m.	buffer: <INVALID POINTER> crypto_handle: 0x003ab270 flags: 0 crypto_export_handle: 0x00000000 blob_type: 6	1	1
CryptExportKey Sept. 30, 2023, 12:53 p.m.	buffer: <INVALID POINTER> crypto_handle: 0x003ab1f0 flags: 0 crypto_export_handle: 0x00000000 blob_type: 6	1	1
CryptExportKey Sept. 30, 2023, 12:53 p.m.	buffer: <INVALID POINTER> crypto_handle: 0x003ab1f0 flags: 0 crypto_export_handle: 0x00000000 blob_type: 6	1	1

This executable has a PDB path (1 event)

pdb_path

®Æ<eíÔ®A|XNÞg±AvÉðà@ô}ÍqûNlæ.ºÔ®aU]dùª ¢.ÖßO7éÏì¸ã{é°´&Ä"ZfýWoÔ`nq

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 Sept. 30, 2023, 12:53 p.m.		1	1	0

One or more processes crashed (1 event)

Time & API	Arguments	Status	Return	Repeated
__exception__ Sept. 30, 2023, 12:53 p.m.	stacktrace: CopyPDBs+0x1b552 DllCanUnloadNowInternal-0x25a85 clr+0x1b1194 @ 0x72951194 LogHelp_TerminateOnAssert+0x14061 GetPrivateContextsPerfCounters-0x53e1 clr+0x82ba1 @ 0x72822ba1 mscorlib+0x2d455b @ 0x71ab455b mscorlib+0x2f2b7c @ 0x71ad2b7c mscorlib+0x2f2a0f @ 0x71ad2a0f mscorlib+0x2f2945 @ 0x71ad2945 mscorlib+0x2d4166 @ 0x71ab4166 mscorlib+0x2e65e0 @ 0x71ac65e0 mscorlib+0x3564bf @ 0x71b364bf microsoft+0x3fd6c @ 0x7344fd6c microsoft+0x3fbf4 @ 0x7344fbf4 microsoft+0x3efde @ 0x7344efde microsoft+0x3e4d4 @ 0x7344e4d4 microsoft+0x3cda4 @ 0x7344cda4 0x4c1b24d 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: 1371880 registers.edi: 0 registers.eax: 1371880 registers.ebp: 1371960 registers.edx: 2148073476 registers.ebx: 4287112 registers.esi: 3902664 registers.ecx: 2636391085	1	0	0

Time & API

Arguments

Status

Return

Repeated

__exception__

Sept. 30, 2023, 12:53 p.m.

stacktrace:

CopyPDBs+0x1b552 DllCanUnloadNowInternal-0x25a85 clr+0x1b1194 @ 0x72951194
LogHelp_TerminateOnAssert+0x14061 GetPrivateContextsPerfCounters-0x53e1 clr+0x82ba1 @ 0x72822ba1
mscorlib+0x2d455b @ 0x71ab455b
mscorlib+0x2f2b7c @ 0x71ad2b7c
mscorlib+0x2f2a0f @ 0x71ad2a0f
mscorlib+0x2f2945 @ 0x71ad2945
mscorlib+0x2d4166 @ 0x71ab4166
mscorlib+0x2e65e0 @ 0x71ac65e0
mscorlib+0x3564bf @ 0x71b364bf
microsoft+0x3fd6c @ 0x7344fd6c
microsoft+0x3fbf4 @ 0x7344fbf4
microsoft+0x3efde @ 0x7344efde
microsoft+0x3e4d4 @ 0x7344e4d4
microsoft+0x3cda4 @ 0x7344cda4
0x4c1b24d
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: 1371880
registers.edi: 0
registers.eax: 1371880
registers.ebp: 1371960
registers.edx: 2148073476
registers.ebx: 4287112
registers.esi: 3902664
registers.ecx: 2636391085

One or more potentially interesting buffers were extracted, these generally contain injected code, configuration data, etc.

Allocates read-write-execute memory (usually to unpack itself) (20 events)

Time & API	Arguments	Status
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 1966080 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00770000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00910000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtProtectVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 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 Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 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 Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 1835008 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00ae0000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00c60000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00512000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00545000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0054b000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00547000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0052c000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00536000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x04c10000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 45056 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x04c11000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0051a000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0053a000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00537000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0052a000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0051c000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Sept. 30, 2023, 12:53 p.m.	process_identifier: 2552 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0052d000 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'0x0027e400', u'virtual_address': u'0x00002000', u'entropy': 7.979078652764322, u'name': u'.text', u'virtual_size': u'0x0027e334'}

entropy

7.97907865276

description

A section with a high entropy has been found

entropy

0.998630940739

description

Overall entropy of this PE file is high

One or more of the buffers contains an embedded PE file (1 event)

buffer

Buffer with sha1: 430572b4c905284f83948f0f412233e51ad7197e

File has been identified by 36 AntiVirus engines on VirusTotal as malicious (36 events)

MicroWorld-eScan	Trojan.GenericKD.69524584
McAfee	Artemis!D6A782CD2E4B
Malwarebytes	Trojan.Crypt
Sangfor	Trojan.Win32.Save.a
Alibaba	Trojan:MSIL/GenKryptik.62b80e2a
Cybereason	malicious.b5ff00
Cyren	W32/MSIL_Kryptik.JXM.gen!Eldorado
Symantec	ML.Attribute.HighConfidence
ESET-NOD32	a variant of MSIL/GenKryptik.GOHP
Cynet	Malicious (score: 99)
Kaspersky	HEUR:Trojan-Spy.MSIL.Stealer.gen
BitDefender	Trojan.GenericKD.69524584
Avast	Win32:CrypterX-gen [Trj]
Sophos	Mal/Generic-S
F-Secure	Trojan.TR/AD.Nekark.kylwt
McAfee-GW-Edition	Artemis!Trojan
FireEye	Trojan.GenericKD.69524584
Emsisoft	Trojan.GenericKD.69524584 (B)
SentinelOne	Static AI - Suspicious PE
Avira	TR/AD.Nekark.kylwt
MAX	malware (ai score=89)
Antiy-AVL	Trojan/MSIL.GenKryptik
Gridinsoft	Trojan.Win32.Kryptik.sa
Microsoft	Trojan:Win32/Malgent!MSR
ZoneAlarm	HEUR:Trojan-Spy.MSIL.Stealer.gen
GData	Trojan.GenericKD.69524584
Google	Detected
AhnLab-V3	Trojan/Win.Generic.C5498466
VBA32	Malware-Cryptor.MSIL.AgentTesla.Heur
Panda	Trj/Chgt.AD
TrendMicro-HouseCall	TROJ_GEN.R002H0DIT23
Rising	Trojan.Kryptik!8.8 (CLOUD)
Fortinet	MSIL/GenKryptik.GOHP!tr
AVG	Win32:CrypterX-gen [Trj]
DeepInstinct	MALICIOUS
CrowdStrike	win/malicious_confidence_100% (W)

RBY1.exe

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