Analysis
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max time kernel
140s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
27/11/2022, 00:23
Static task
static1
Behavioral task
behavioral1
Sample
54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe
Resource
win7-20220901-en
General
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Target
54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe
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Size
271KB
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MD5
c239c75c787b2181d8dc1a0882b4a159
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SHA1
a0e573b00493677797969c52e3c30e3d145e0eae
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SHA256
54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea
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SHA512
ab4aede8fb02bf481336004c6ce90806852bb39de431fd4d028ee7c048390beab680debb851eec36d40c71f971d41370ed1f3b2fa3782cae7489d9b8a2a7dcc8
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SSDEEP
6144:XgfVPno0A98mfqyFD2ibY6aRwqlg1NpHcCxxuTklqttnN4l:XgfBo0iqyFD2ijs2B9cbbal
Malware Config
Extracted
darkcomet
Guest16
212.7.208.94:16047
DC_MUTEX-AUBVEGH
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gencode
YutS7R9UNRic
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install
false
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offline_keylogger
true
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persistence
false
Signatures
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resource yara_rule behavioral2/memory/1516-136-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/1516-137-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/1516-138-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/1516-139-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/1516-140-0x0000000000400000-0x00000000004B7000-memory.dmp upx -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Software Utilizer = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Utilizer.exe" WScript.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce WScript.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4816 set thread context of 1516 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 80 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings explorer.exe -
Suspicious use of AdjustPrivilegeToken 25 IoCs
description pid Process Token: SeDebugPrivilege 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeIncreaseQuotaPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeSecurityPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeTakeOwnershipPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeLoadDriverPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeSystemProfilePrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeSystemtimePrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeProfSingleProcessPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeIncBasePriorityPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeCreatePagefilePrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeBackupPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeRestorePrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeShutdownPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeDebugPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeSystemEnvironmentPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeChangeNotifyPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeRemoteShutdownPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeUndockPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeManageVolumePrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeImpersonatePrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: SeCreateGlobalPrivilege 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: 33 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: 34 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: 35 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe Token: 36 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1516 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4816 wrote to memory of 1960 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 79 PID 4816 wrote to memory of 1960 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 79 PID 4816 wrote to memory of 1960 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 79 PID 4816 wrote to memory of 1516 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 80 PID 4816 wrote to memory of 1516 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 80 PID 4816 wrote to memory of 1516 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 80 PID 4816 wrote to memory of 1516 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 80 PID 4816 wrote to memory of 1516 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 80 PID 4816 wrote to memory of 1516 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 80 PID 4816 wrote to memory of 1516 4816 54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe 80 PID 3536 wrote to memory of 4500 3536 explorer.exe 82 PID 3536 wrote to memory of 4500 3536 explorer.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe"C:\Users\Admin\AppData\Local\Temp\54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4816 -
C:\Windows\SysWOW64\explorer.exe"C:\Windows\System32\explorer.exe" C:\Users\Admin\AppData\Roaming\QObrNNBeF.vbs2⤵PID:1960
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C:\Users\Admin\AppData\Local\Temp\54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe"C:\Users\Admin\AppData\Local\Temp\54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1516
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3536 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\QObrNNBeF.vbs"2⤵
- Adds Run key to start application
PID:4500
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
601B
MD53f9a9f31e88eb653e15525f7568d2ce3
SHA17db2de7325dbd8c2574c78f661fc1c28ebc10301
SHA256712461277fd0b416b766321612ba0346c5ae4c2e181f6fbc4d984fdb757d9159
SHA51294810b387cbe26fca10e39f6f4f7cd605caefe69b4f23d5d1d06f764cbb53744c6048a44fd203b85e14318679ab67b2cc11aa50fe6ebc1c821ad970d0c6ea313