Analysis
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max time kernel
151s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
02-10-2022 15:17
Behavioral task
behavioral1
Sample
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Resource
win7-20220812-en
General
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Target
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
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Size
349KB
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MD5
6d2706ffb3b1c6efd5594e1a2ff787b0
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SHA1
b819a1b540b2f21c1ae6fcb7c925a51e445f3b0a
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SHA256
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e
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SHA512
968c98c388a3fffe0a8a89f496c9fafb59419440d0f4ae49d5ccb1ceb3f4611c3e6cd327258ba47cfc55d3620aafc62d0b7bc889a1712c63dda227025fa4c653
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SSDEEP
6144:wcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37d3I2RwplSZkOiu9PZ/p:wcW7KEZlPzCy37xRPNVR
Malware Config
Extracted
darkcomet
Guest16
rabdarcrab.no-ip.biz:1604
DC_MUTEX-12PKHNW
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InstallPath
MSDCSC\msdcsc.exe
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gencode
yVkohe6HvLBv
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install
true
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offline_keylogger
true
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persistence
true
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reg_key
MicroUpdate
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe -
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 108 msdcsc.exe -
Processes:
resource yara_rule behavioral1/memory/2040-55-0x0000000000400000-0x00000000004E8000-memory.dmp upx \Users\Admin\Documents\MSDCSC\msdcsc.exe upx \Users\Admin\Documents\MSDCSC\msdcsc.exe upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx behavioral1/memory/108-63-0x0000000000400000-0x00000000004E8000-memory.dmp upx behavioral1/memory/108-64-0x0000000000400000-0x00000000004E8000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exepid process 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exemsdcsc.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" msdcsc.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 46 IoCs
Processes:
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeSecurityPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeTakeOwnershipPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeLoadDriverPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeSystemProfilePrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeSystemtimePrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeProfSingleProcessPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeIncBasePriorityPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeCreatePagefilePrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeBackupPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeRestorePrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeShutdownPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeDebugPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeSystemEnvironmentPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeChangeNotifyPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeRemoteShutdownPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeUndockPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeManageVolumePrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeImpersonatePrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeCreateGlobalPrivilege 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: 33 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: 34 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: 35 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe Token: SeIncreaseQuotaPrivilege 108 msdcsc.exe Token: SeSecurityPrivilege 108 msdcsc.exe Token: SeTakeOwnershipPrivilege 108 msdcsc.exe Token: SeLoadDriverPrivilege 108 msdcsc.exe Token: SeSystemProfilePrivilege 108 msdcsc.exe Token: SeSystemtimePrivilege 108 msdcsc.exe Token: SeProfSingleProcessPrivilege 108 msdcsc.exe Token: SeIncBasePriorityPrivilege 108 msdcsc.exe Token: SeCreatePagefilePrivilege 108 msdcsc.exe Token: SeBackupPrivilege 108 msdcsc.exe Token: SeRestorePrivilege 108 msdcsc.exe Token: SeShutdownPrivilege 108 msdcsc.exe Token: SeDebugPrivilege 108 msdcsc.exe Token: SeSystemEnvironmentPrivilege 108 msdcsc.exe Token: SeChangeNotifyPrivilege 108 msdcsc.exe Token: SeRemoteShutdownPrivilege 108 msdcsc.exe Token: SeUndockPrivilege 108 msdcsc.exe Token: SeManageVolumePrivilege 108 msdcsc.exe Token: SeImpersonatePrivilege 108 msdcsc.exe Token: SeCreateGlobalPrivilege 108 msdcsc.exe Token: 33 108 msdcsc.exe Token: 34 108 msdcsc.exe Token: 35 108 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 108 msdcsc.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exedescription pid process target process PID 2040 wrote to memory of 108 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe msdcsc.exe PID 2040 wrote to memory of 108 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe msdcsc.exe PID 2040 wrote to memory of 108 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe msdcsc.exe PID 2040 wrote to memory of 108 2040 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe msdcsc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe"C:\Users\Admin\AppData\Local\Temp\571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe"1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040 -
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:108
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
349KB
MD56d2706ffb3b1c6efd5594e1a2ff787b0
SHA1b819a1b540b2f21c1ae6fcb7c925a51e445f3b0a
SHA256571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e
SHA512968c98c388a3fffe0a8a89f496c9fafb59419440d0f4ae49d5ccb1ceb3f4611c3e6cd327258ba47cfc55d3620aafc62d0b7bc889a1712c63dda227025fa4c653
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
349KB
MD56d2706ffb3b1c6efd5594e1a2ff787b0
SHA1b819a1b540b2f21c1ae6fcb7c925a51e445f3b0a
SHA256571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e
SHA512968c98c388a3fffe0a8a89f496c9fafb59419440d0f4ae49d5ccb1ceb3f4611c3e6cd327258ba47cfc55d3620aafc62d0b7bc889a1712c63dda227025fa4c653
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\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
349KB
MD56d2706ffb3b1c6efd5594e1a2ff787b0
SHA1b819a1b540b2f21c1ae6fcb7c925a51e445f3b0a
SHA256571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e
SHA512968c98c388a3fffe0a8a89f496c9fafb59419440d0f4ae49d5ccb1ceb3f4611c3e6cd327258ba47cfc55d3620aafc62d0b7bc889a1712c63dda227025fa4c653
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\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
349KB
MD56d2706ffb3b1c6efd5594e1a2ff787b0
SHA1b819a1b540b2f21c1ae6fcb7c925a51e445f3b0a
SHA256571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e
SHA512968c98c388a3fffe0a8a89f496c9fafb59419440d0f4ae49d5ccb1ceb3f4611c3e6cd327258ba47cfc55d3620aafc62d0b7bc889a1712c63dda227025fa4c653
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memory/108-58-0x0000000000000000-mapping.dmp
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memory/108-63-0x0000000000400000-0x00000000004E8000-memory.dmpFilesize
928KB
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memory/108-64-0x0000000000400000-0x00000000004E8000-memory.dmpFilesize
928KB
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memory/2040-54-0x00000000762D1000-0x00000000762D3000-memory.dmpFilesize
8KB
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memory/2040-55-0x0000000000400000-0x00000000004E8000-memory.dmpFilesize
928KB
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memory/2040-62-0x00000000039B0000-0x0000000003A98000-memory.dmpFilesize
928KB