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Analysis
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max time kernel
135s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
07/11/2022, 16:03
Behavioral task
behavioral1
Sample
4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Resource
win7-20220812-en
General
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Target
4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
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Size
330KB
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MD5
170a9310f4fee2a3344beaa63a0bd3d1
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SHA1
435eb06cf036329dbc3e310fb3e9629c6c68f8e7
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SHA256
4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c
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SHA512
4d3e89935a7a6bfd061d176d40f54d7b8f46e5dab0ecd59f1d9291eaea3f8882acad326aa8e6e6bbaa1ce9a3b827f2d2d349e435ee75ce7c1fc82e2a9697fa5c
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SSDEEP
6144:ojFy93LU92VxOtVflFud4TnxcpPTASCmqMorHwMYoSG:oFy9bPQZlFjrG0ZmYbw1oS
Malware Config
Extracted
darkcomet
Kelly
90.34.201.154:1604
DCMIN_MUTEX-MY3VXBN
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InstallPath
DCSCMIN\IMDCSC.exe
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gencode
aAPjs3ZWKKtp
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install
true
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offline_keylogger
true
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persistence
false
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reg_key
DarkComet RAT
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\DCSCMIN\\IMDCSC.exe" 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe -
Executes dropped EXE 1 IoCs
pid Process 4100 IMDCSC.exe -
resource yara_rule behavioral2/memory/4040-132-0x0000000000400000-0x00000000004E8000-memory.dmp upx behavioral2/files/0x0006000000022f48-134.dat upx behavioral2/files/0x0006000000022f48-135.dat upx behavioral2/memory/4100-136-0x0000000000400000-0x00000000004E8000-memory.dmp upx behavioral2/memory/4040-137-0x0000000000400000-0x00000000004E8000-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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DarkComet RAT = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DCSCMIN\\IMDCSC.exe" 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe -
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 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeSecurityPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeTakeOwnershipPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeLoadDriverPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeSystemProfilePrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeSystemtimePrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeProfSingleProcessPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeIncBasePriorityPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeCreatePagefilePrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeBackupPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeRestorePrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeShutdownPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeDebugPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeSystemEnvironmentPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeChangeNotifyPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeRemoteShutdownPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeUndockPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeManageVolumePrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeImpersonatePrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeCreateGlobalPrivilege 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: 33 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: 34 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: 35 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: 36 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe Token: SeIncreaseQuotaPrivilege 4100 IMDCSC.exe Token: SeSecurityPrivilege 4100 IMDCSC.exe Token: SeTakeOwnershipPrivilege 4100 IMDCSC.exe Token: SeLoadDriverPrivilege 4100 IMDCSC.exe Token: SeSystemProfilePrivilege 4100 IMDCSC.exe Token: SeSystemtimePrivilege 4100 IMDCSC.exe Token: SeProfSingleProcessPrivilege 4100 IMDCSC.exe Token: SeIncBasePriorityPrivilege 4100 IMDCSC.exe Token: SeCreatePagefilePrivilege 4100 IMDCSC.exe Token: SeBackupPrivilege 4100 IMDCSC.exe Token: SeRestorePrivilege 4100 IMDCSC.exe Token: SeShutdownPrivilege 4100 IMDCSC.exe Token: SeDebugPrivilege 4100 IMDCSC.exe Token: SeSystemEnvironmentPrivilege 4100 IMDCSC.exe Token: SeChangeNotifyPrivilege 4100 IMDCSC.exe Token: SeRemoteShutdownPrivilege 4100 IMDCSC.exe Token: SeUndockPrivilege 4100 IMDCSC.exe Token: SeManageVolumePrivilege 4100 IMDCSC.exe Token: SeImpersonatePrivilege 4100 IMDCSC.exe Token: SeCreateGlobalPrivilege 4100 IMDCSC.exe Token: 33 4100 IMDCSC.exe Token: 34 4100 IMDCSC.exe Token: 35 4100 IMDCSC.exe Token: 36 4100 IMDCSC.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4100 IMDCSC.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4040 wrote to memory of 4100 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe 79 PID 4040 wrote to memory of 4100 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe 79 PID 4040 wrote to memory of 4100 4040 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe"C:\Users\Admin\AppData\Local\Temp\4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4040 -
C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe"C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4100
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
330KB
MD5170a9310f4fee2a3344beaa63a0bd3d1
SHA1435eb06cf036329dbc3e310fb3e9629c6c68f8e7
SHA2564c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c
SHA5124d3e89935a7a6bfd061d176d40f54d7b8f46e5dab0ecd59f1d9291eaea3f8882acad326aa8e6e6bbaa1ce9a3b827f2d2d349e435ee75ce7c1fc82e2a9697fa5c
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Filesize
330KB
MD5170a9310f4fee2a3344beaa63a0bd3d1
SHA1435eb06cf036329dbc3e310fb3e9629c6c68f8e7
SHA2564c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c
SHA5124d3e89935a7a6bfd061d176d40f54d7b8f46e5dab0ecd59f1d9291eaea3f8882acad326aa8e6e6bbaa1ce9a3b827f2d2d349e435ee75ce7c1fc82e2a9697fa5c