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Analysis
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max time kernel
182s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
03/12/2022, 13:21
Static task
static1
Behavioral task
behavioral1
Sample
c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe
Resource
win7-20220812-en
General
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Target
c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe
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Size
389KB
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MD5
eae6b37b6242cdeba60fd04f4d09dc8b
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SHA1
2a487a88a9a8f3663ed0f2a5d562af424b7bff21
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SHA256
c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a
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SHA512
76a69134b147535e88a7b58f59cd19efa0711f64181b0b0feff657ba993a2e33c4084ed6cd4728646403f4c7762afe47b4b031ddd0fb47085c27f859393e7c3d
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SSDEEP
6144:XEk6v38qdv4A9sE2bLutpL9v++JQegpbtKHWIhQFLfjWUkgd2d2NTAreVRcNoO:XEJ8qdgAIuwY/mcQxfjWUPFNcr0J
Malware Config
Extracted
darkcomet
Guest16
nicksrat.no-ip.biz:1604
DC_MUTEX-H7FLLF9
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gencode
t4wBhiJiyE7T
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install
false
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offline_keylogger
true
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persistence
false
Signatures
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Executes dropped EXE 1 IoCs
pid Process 1032 vbc.exe -
resource yara_rule behavioral1/memory/1032-58-0x0000000000400000-0x00000000004B5000-memory.dmp upx behavioral1/memory/1032-60-0x0000000000400000-0x00000000004B5000-memory.dmp upx behavioral1/memory/1032-61-0x0000000000400000-0x00000000004B5000-memory.dmp upx behavioral1/memory/1032-65-0x0000000000400000-0x00000000004B5000-memory.dmp upx behavioral1/memory/1032-67-0x0000000000400000-0x00000000004B5000-memory.dmp upx behavioral1/memory/1032-68-0x0000000000400000-0x00000000004B5000-memory.dmp upx behavioral1/memory/1032-69-0x0000000000400000-0x00000000004B5000-memory.dmp upx behavioral1/memory/1032-70-0x0000000000400000-0x00000000004B5000-memory.dmp upx behavioral1/memory/1032-71-0x0000000000400000-0x00000000004B5000-memory.dmp upx -
Loads dropped DLL 1 IoCs
pid Process 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe -
Uses the VBS compiler for execution 1 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\WinUpdtr\\c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe" c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 884 set thread context of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 23 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1032 vbc.exe Token: SeSecurityPrivilege 1032 vbc.exe Token: SeTakeOwnershipPrivilege 1032 vbc.exe Token: SeLoadDriverPrivilege 1032 vbc.exe Token: SeSystemProfilePrivilege 1032 vbc.exe Token: SeSystemtimePrivilege 1032 vbc.exe Token: SeProfSingleProcessPrivilege 1032 vbc.exe Token: SeIncBasePriorityPrivilege 1032 vbc.exe Token: SeCreatePagefilePrivilege 1032 vbc.exe Token: SeBackupPrivilege 1032 vbc.exe Token: SeRestorePrivilege 1032 vbc.exe Token: SeShutdownPrivilege 1032 vbc.exe Token: SeDebugPrivilege 1032 vbc.exe Token: SeSystemEnvironmentPrivilege 1032 vbc.exe Token: SeChangeNotifyPrivilege 1032 vbc.exe Token: SeRemoteShutdownPrivilege 1032 vbc.exe Token: SeUndockPrivilege 1032 vbc.exe Token: SeManageVolumePrivilege 1032 vbc.exe Token: SeImpersonatePrivilege 1032 vbc.exe Token: SeCreateGlobalPrivilege 1032 vbc.exe Token: 33 1032 vbc.exe Token: 34 1032 vbc.exe Token: 35 1032 vbc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1032 vbc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 884 wrote to memory of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27 PID 884 wrote to memory of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27 PID 884 wrote to memory of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27 PID 884 wrote to memory of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27 PID 884 wrote to memory of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27 PID 884 wrote to memory of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27 PID 884 wrote to memory of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27 PID 884 wrote to memory of 1032 884 c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe"C:\Users\Admin\AppData\Local\Temp\c8235cf09120c1bf9a5c6caf885c1784178e4c30e9eef2d274902b32e0fc265a.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:884 -
C:\Users\Admin\AppData\Local\Temp\vbc.exeC:\Users\Admin\AppData\Local\Temp\vbc.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1032
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.1MB
MD534aa912defa18c2c129f1e09d75c1d7e
SHA19c3046324657505a30ecd9b1fdb46c05bde7d470
SHA2566df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386
SHA512d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98
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Filesize
1.1MB
MD534aa912defa18c2c129f1e09d75c1d7e
SHA19c3046324657505a30ecd9b1fdb46c05bde7d470
SHA2566df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386
SHA512d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98