Summary | ZeroBOX

Category	Machine	Started	Completed
FILE	s1_win7_x6403_us	Oct. 18, 2021, 4:10 p.m.	Oct. 18, 2021, 4:12 p.m.

Size	1.2MB
Type	PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5	`081964c37b284b77cd71ce356461d1a4`
SHA256	`4149ed81619e6fbe482cc898f5d5796a4bbb50cc2e7c0f4abe02e87d0cc0c77d`
CRC32	`62C255C2`
ssdeep	`12288:YaeRPiwoNdSUTEbDUjFKK1w9y6b76q/tc9t7JQmoo:aeREcZy06bcDQmoo`
Yara	Admin_Tool_IN_Zero - Admin Tool Sysinternals PE_Header_Zero - PE File Signature Generic_Malware_Zero - Generic Malware IsPE32 - (no description) Is_DotNET_EXE - (no description) UPX_Zero - UPX packed file Win_Backdoor_AsyncRAT_Zero - Win Backdoor AsyncRAT Win32_Trojan_PWS_Net_1_Zero - Win32 Trojan PWS .NET Azorult

vbc.exe "C:\Users\test22\AppData\Local\Temp\vbc.exe"
2484

Name	Response	Post-Analysis Lookup
apps.identrust.com	CNAME a1952.dscq.akamai.net A 182.162.106.42 CNAME identrust.edgesuite.net A 182.162.106.26	119.207.65.137
pastebin.pl	A 168.119.93.163	168.119.93.163

IP Address	Status	Action
164.124.101.2	Active	Moloch
168.119.93.163	Active	Moloch
182.162.106.26	Active	Moloch

Suricata Alerts

Flow	SID	Signature	Category
TCP 192.168.56.103:49166 -> 168.119.93.163:443	906200022	SSLBL: Malicious JA3 SSL-Client Fingerprint detected (Tofsee)	undefined

Suricata TLS

Flow	Issuer	Subject	Fingerprint
TLS 1.2 192.168.56.103:49166 168.119.93.163:443	C=US, O=Let's Encrypt, CN=R3	CN=www.pastebin.pl	8e:15:df:61:a6:4c:a9:a2:35:0c:1a:86:71:87:1a:b2:0d:49:99:fb

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

Time & API	Arguments	Status	Return	Repeated
IsDebuggerPresent Oct. 18, 2021, 4:10 p.m.			0	0
IsDebuggerPresent Oct. 18, 2021, 4:10 p.m.			0	0

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 Oct. 18, 2021, 4:10 p.m.		1	1	0

One or more processes crashed (1 event)

Time & API	Arguments	Status	Return	Repeated
__exception__ Oct. 18, 2021, 4:10 p.m.	stacktrace: 0xad055e DllUnregisterServerInternal-0x7aa2 clr+0x2652 @ 0x73bd2652 DllRegisterServerInternal+0x243 CoUninitializeEE-0xd1f5 clr+0x1264f @ 0x73be264f DllRegisterServerInternal+0xa89 CoUninitializeEE-0xc9af clr+0x12e95 @ 0x73be2e95 DllGetClassObjectInternal+0x2473 CorDllMainForThunk-0x8a088 clr+0xc74ec @ 0x73c974ec DllGetClassObjectInternal+0x2597 CorDllMainForThunk-0x89f64 clr+0xc7610 @ 0x73c97610 CorDllMainForThunk+0x850 _CorExeMain-0x238a clr+0x151dc4 @ 0x73d21dc4 CorDllMainForThunk+0x8f3 _CorExeMain-0x22e7 clr+0x151e67 @ 0x73d21e67 CorDllMainForThunk+0xa06 _CorExeMain-0x21d4 clr+0x151f7a @ 0x73d21f7a _CorExeMain+0x1c ClrCreateManagedInstance-0x35cd clr+0x15416a @ 0x73d2416a _CorExeMain+0x71 GetFileVersion-0x293a mscoreei+0xf5a3 @ 0x7427f5a3 CreateConfigStream+0x13f GetProcessExecutableHeap-0xad6 mscoree+0x7f16 @ 0x74507f16 _CorExeMain+0x8 CreateConfigStream-0x2ff4 mscoree+0x4de3 @ 0x74504de3 RtlInitializeExceptionChain+0x63 RtlAllocateActivationContextStack-0xa1 ntdll+0x39ed2 @ 0x77579ed2 RtlInitializeExceptionChain+0x36 RtlAllocateActivationContextStack-0xce ntdll+0x39ea5 @ 0x77579ea5 exception.instruction_r: 39 09 e8 8d 81 a5 71 89 85 5c ff ff ff 8b 45 90 exception.instruction: cmp dword ptr [ecx], ecx exception.exception_code: 0xc0000005 exception.symbol: exception.address: 0xad082c registers.esp: 2355556 registers.edi: 2355848 registers.eax: 40531488 registers.ebp: 2355860 registers.edx: 40531488 registers.ebx: 2356220 registers.esi: 0 registers.ecx: 0	1	0	0

Time & API

Arguments

Status

Return

Repeated

__exception__

Oct. 18, 2021, 4:10 p.m.

stacktrace:

0xad055e
DllUnregisterServerInternal-0x7aa2 clr+0x2652 @ 0x73bd2652
DllRegisterServerInternal+0x243 CoUninitializeEE-0xd1f5 clr+0x1264f @ 0x73be264f
DllRegisterServerInternal+0xa89 CoUninitializeEE-0xc9af clr+0x12e95 @ 0x73be2e95
DllGetClassObjectInternal+0x2473 CorDllMainForThunk-0x8a088 clr+0xc74ec @ 0x73c974ec
DllGetClassObjectInternal+0x2597 CorDllMainForThunk-0x89f64 clr+0xc7610 @ 0x73c97610
CorDllMainForThunk+0x850 _CorExeMain-0x238a clr+0x151dc4 @ 0x73d21dc4
CorDllMainForThunk+0x8f3 _CorExeMain-0x22e7 clr+0x151e67 @ 0x73d21e67
CorDllMainForThunk+0xa06 _CorExeMain-0x21d4 clr+0x151f7a @ 0x73d21f7a
_CorExeMain+0x1c ClrCreateManagedInstance-0x35cd clr+0x15416a @ 0x73d2416a
_CorExeMain+0x71 GetFileVersion-0x293a mscoreei+0xf5a3 @ 0x7427f5a3
CreateConfigStream+0x13f GetProcessExecutableHeap-0xad6 mscoree+0x7f16 @ 0x74507f16
_CorExeMain+0x8 CreateConfigStream-0x2ff4 mscoree+0x4de3 @ 0x74504de3
RtlInitializeExceptionChain+0x63 RtlAllocateActivationContextStack-0xa1 ntdll+0x39ed2 @ 0x77579ed2
RtlInitializeExceptionChain+0x36 RtlAllocateActivationContextStack-0xce ntdll+0x39ea5 @ 0x77579ea5

exception.instruction_r: 39 09 e8 8d 81 a5 71 89 85 5c ff ff ff 8b 45 90
exception.instruction: cmp dword ptr [ecx], ecx
exception.exception_code: 0xc0000005
exception.symbol:
exception.address: 0xad082c
registers.esp: 2355556
registers.edi: 2355848
registers.eax: 40531488
registers.ebp: 2355860
registers.edx: 40531488
registers.ebx: 2356220
registers.esi: 0
registers.ecx: 0

Performs some HTTP requests (1 event)

request

GET http://apps.identrust.com/roots/dstrootcax3.p7c

Allocates read-write-execute memory (usually to unpack itself) (19 events)

Time & API	Arguments	Status
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 1900544 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x006b0000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00840000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtProtectVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x73bd1000 process_handle: 0xffffffff	1
NtProtectVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x73bd2000 process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 327680 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x005c0000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x005d0000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00562000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 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 Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 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 Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 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 Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0057c000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00ad0000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 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 Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0058a000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00587000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00586000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0058b000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1
NtAllocateVirtualMemory Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 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 Oct. 18, 2021, 4:10 p.m.	process_identifier: 2484 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

Checks adapter addresses which can be used to detect virtual network interfaces (1 event)

Time & API	Arguments	Status	Return	Repeated
GetAdaptersAddresses Oct. 18, 2021, 4:10 p.m.	flags: 15 family: 0		111	0

File has been identified by 21 AntiVirus engines on VirusTotal as malicious (21 events)

MicroWorld-eScan	Gen:Variant.Bulz.820267
FireEye	Gen:Variant.Bulz.820267
Sangfor	Suspicious.Win32.Save.a
Cyren	W32/MSIL_Kryptik.DSR.gen!Eldorado
Symantec	ML.Attribute.HighConfidence
ESET-NOD32	a variant of MSIL/TrojanDownloader.Agent.JCJ
Paloalto	generic.ml
Kaspersky	HEUR:Trojan-Downloader.MSIL.Agent.gen
BitDefender	Gen:Variant.Bulz.820267
Ad-Aware	Gen:Variant.Bulz.820267
Emsisoft	Gen:Variant.Bulz.820267 (B)
DrWeb	Trojan.DownloaderNET.228
SentinelOne	Static AI - Suspicious PE
Arcabit	Trojan.Bulz.DC842B
ZoneAlarm	HEUR:Trojan-Downloader.MSIL.Agent.gen
GData	Gen:Variant.Bulz.820267
MAX	malware (ai score=86)
VBA32	Malware-Cryptor.MSIL.AgentTesla.Heur
Malwarebytes	Spyware.PasswordStealer.MSIL.Generic
Ikarus	Trojan.Inject
MaxSecure	Trojan.Malware.300983.susgen

vbc.exe

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