Analysis
- max time kernel
174s - max time network
180s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system - submitted
14/10/2022, 10:02
Behavioral task
behavioral1
Sample
ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe
Resource
win7-20220812-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
11 signatures
150 seconds
General
- Target ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe
- Size 232KB
- Sample221014-l2xqfaadd7
- SHA256 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83
- MD5 72a69812baa0e85ea8946cc8ae39f230
- SHA1 53143da9081700f63da56db304367700cab880ee
- SHA512 ff9d8dfe88902db7063db62705cb9c6215896c64b7671e35cea2d38bf6166150eac1bf704a1b7aa4d99bf416252f92f1aa09ae6292f53386bdf83249b8abd073
- SSDEEP 6144:ijFy93LU92VxOtVflFud4TnxcpPTASCmqMorHwMwXtIoS:iFy9bPQZlFjrG0ZmYbwlXtIoS
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
darkcomet
Botnet
-
Guest16_min
C2
-
127.0.0.1:1604
Mutex
-
DCMIN_MUTEX-C0HKP9Q
Attributes
-
InstallPath
DCSCMIN\IMDCSC.exe
-
gencode
TEe1dY1p2nrS
-
install
true
-
offline_keylogger
true
-
persistence
false
-
reg_key
exasoft
Signatures
- 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:\\Windows\\system32\\DCSCMIN\\IMDCSC.exe" ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe - Executes dropped EXE 1 IoCs
pid Process 1000 IMDCSC.exe -
resource yara_rule behavioral2/memory/2972-132-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/files/0x0002000000022da6-134.dat upx behavioral2/files/0x0002000000022da6-135.dat upx behavioral2/memory/1000-136-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/2972-137-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/1000-138-0x0000000000400000-0x00000000004B7000-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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\exasoft = "C:\\Windows\\system32\\DCSCMIN\\IMDCSC.exe" ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe - Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\DCSCMIN\IMDCSC.exe ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe File opened for modification C:\Windows\SysWOW64\DCSCMIN\IMDCSC.exe ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeSecurityPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeTakeOwnershipPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeLoadDriverPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeSystemProfilePrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeSystemtimePrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeProfSingleProcessPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeIncBasePriorityPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeCreatePagefilePrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeBackupPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeRestorePrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeShutdownPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeDebugPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeSystemEnvironmentPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeChangeNotifyPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeRemoteShutdownPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeUndockPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeManageVolumePrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeImpersonatePrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeCreateGlobalPrivilege 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: 33 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: 34 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: 35 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: 36 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe Token: SeIncreaseQuotaPrivilege 1000 IMDCSC.exe Token: SeSecurityPrivilege 1000 IMDCSC.exe Token: SeTakeOwnershipPrivilege 1000 IMDCSC.exe Token: SeLoadDriverPrivilege 1000 IMDCSC.exe Token: SeSystemProfilePrivilege 1000 IMDCSC.exe Token: SeSystemtimePrivilege 1000 IMDCSC.exe Token: SeProfSingleProcessPrivilege 1000 IMDCSC.exe Token: SeIncBasePriorityPrivilege 1000 IMDCSC.exe Token: SeCreatePagefilePrivilege 1000 IMDCSC.exe Token: SeBackupPrivilege 1000 IMDCSC.exe Token: SeRestorePrivilege 1000 IMDCSC.exe Token: SeShutdownPrivilege 1000 IMDCSC.exe Token: SeDebugPrivilege 1000 IMDCSC.exe Token: SeSystemEnvironmentPrivilege 1000 IMDCSC.exe Token: SeChangeNotifyPrivilege 1000 IMDCSC.exe Token: SeRemoteShutdownPrivilege 1000 IMDCSC.exe Token: SeUndockPrivilege 1000 IMDCSC.exe Token: SeManageVolumePrivilege 1000 IMDCSC.exe Token: SeImpersonatePrivilege 1000 IMDCSC.exe Token: SeCreateGlobalPrivilege 1000 IMDCSC.exe Token: 33 1000 IMDCSC.exe Token: 34 1000 IMDCSC.exe Token: 35 1000 IMDCSC.exe Token: 36 1000 IMDCSC.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1000 IMDCSC.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2972 wrote to memory of 1000 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe 84 PID 2972 wrote to memory of 1000 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe 84 PID 2972 wrote to memory of 1000 2972 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe 84
Processes
-
C:\Users\Admin\AppData\Local\Temp\ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe"C:\Users\Admin\AppData\Local\Temp\ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2972 -
C:\Windows\SysWOW64\DCSCMIN\IMDCSC.exe"C:\Windows\system32\DCSCMIN\IMDCSC.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1000
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\DCSCMIN\IMDCSC.exe
- Size 232KB
- SHA256 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83
- MD5 72a69812baa0e85ea8946cc8ae39f230
- SHA1 53143da9081700f63da56db304367700cab880ee
- SHA512 ff9d8dfe88902db7063db62705cb9c6215896c64b7671e35cea2d38bf6166150eac1bf704a1b7aa4d99bf416252f92f1aa09ae6292f53386bdf83249b8abd073
- SSDEEP 6144:ijFy93LU92VxOtVflFud4TnxcpPTASCmqMorHwMwXtIoS:iFy9bPQZlFjrG0ZmYbwlXtIoS
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\DCSCMIN\IMDCSC.exe
- Size 232KB
- SHA256 ef7cf32c862faf37438a4498376c8949f8b40f14c09b97a4180baa4cde3b5d83
- MD5 72a69812baa0e85ea8946cc8ae39f230
- SHA1 53143da9081700f63da56db304367700cab880ee
- SHA512 ff9d8dfe88902db7063db62705cb9c6215896c64b7671e35cea2d38bf6166150eac1bf704a1b7aa4d99bf416252f92f1aa09ae6292f53386bdf83249b8abd073
- SSDEEP 6144:ijFy93LU92VxOtVflFud4TnxcpPTASCmqMorHwMwXtIoS:iFy9bPQZlFjrG0ZmYbwlXtIoS
- MD5 SHA1 SHA512 SSDEEP