darkcomet | b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9

Analysis

max time kernel
120s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/10/2024, 17:12

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General

Target

b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Size

964KB
MD5

55ef299dc3a3c80f25554923566ac6a0
SHA1

55313910c1e6c2c8b9aaf718032abec535827f7b
SHA256

b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9
SHA512

ecb41fa1838b88205ea28514d2483044e36057a67743e712f8653497e5e24fe56ac9662fd2b05de634eaa945d639cc29e516323e906aff67725420d9800fc557
SSDEEP

24576:O/9tT24rAjDLG50Xot0fvF+2rGVvELMR2mA6O:OrUL4taI2O52xL

Score

10^/10

darkcomet fud crypt aspackv2 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

FUD Crypt

wcrat2.no-ip.org:201

Mutex

DC_MUTEX-F9SVRHH

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
j6CuqwUwAD5D
install
true
offline_keylogger
true
persistence
true
reg_key
msdcsc.exe

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

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\\MSDCSC\\msdcsc.exe"	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0008000000023cb1-34.dat	aspack_v212_v242

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe

Executes dropped EXE 2 IoCs

pid	Process
1756	msdcsc.exe
3324	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msdcsc.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msdcsc.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

AutoIT Executable 8 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/1132-2-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/1132-1-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/1132-3-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/1132-27-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/1756-42-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/1756-41-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/1756-40-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/1756-68-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1132 set thread context of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1756 set thread context of 3324	1756	msdcsc.exe	87

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeSecurityPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeTakeOwnershipPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeLoadDriverPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeSystemProfilePrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeSystemtimePrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeProfSingleProcessPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeIncBasePriorityPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeCreatePagefilePrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeBackupPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeRestorePrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeShutdownPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeDebugPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeSystemEnvironmentPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeChangeNotifyPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeRemoteShutdownPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeUndockPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeManageVolumePrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeImpersonatePrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeCreateGlobalPrivilege	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: 33	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: 34	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: 35	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: 36	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
Token: SeIncreaseQuotaPrivilege	3324	msdcsc.exe
Token: SeSecurityPrivilege	3324	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3324	msdcsc.exe
Token: SeLoadDriverPrivilege	3324	msdcsc.exe
Token: SeSystemProfilePrivilege	3324	msdcsc.exe
Token: SeSystemtimePrivilege	3324	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3324	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3324	msdcsc.exe
Token: SeCreatePagefilePrivilege	3324	msdcsc.exe
Token: SeBackupPrivilege	3324	msdcsc.exe
Token: SeRestorePrivilege	3324	msdcsc.exe
Token: SeShutdownPrivilege	3324	msdcsc.exe
Token: SeDebugPrivilege	3324	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3324	msdcsc.exe
Token: SeChangeNotifyPrivilege	3324	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3324	msdcsc.exe
Token: SeUndockPrivilege	3324	msdcsc.exe
Token: SeManageVolumePrivilege	3324	msdcsc.exe
Token: SeImpersonatePrivilege	3324	msdcsc.exe
Token: SeCreateGlobalPrivilege	3324	msdcsc.exe
Token: 33	3324	msdcsc.exe
Token: 34	3324	msdcsc.exe
Token: 35	3324	msdcsc.exe
Token: 36	3324	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3324	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1132 wrote to memory of 1408	1132	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	84
PID 1408 wrote to memory of 1756	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	86
PID 1408 wrote to memory of 1756	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	86
PID 1408 wrote to memory of 1756	1408	b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe	86
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87
PID 1756 wrote to memory of 3324	1756	msdcsc.exe	87

C:\Users\Admin\AppData\Local\Temp\b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
"C:\Users\Admin\AppData\Local\Temp\b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Users\Admin\AppData\Local\Temp\b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
  "C:\Users\Admin\AppData\Local\Temp\b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1408
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1756
  - - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
964KB

MD5
55ef299dc3a3c80f25554923566ac6a0

SHA1
55313910c1e6c2c8b9aaf718032abec535827f7b

SHA256
b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9

SHA512
ecb41fa1838b88205ea28514d2483044e36057a67743e712f8653497e5e24fe56ac9662fd2b05de634eaa945d639cc29e516323e906aff67725420d9800fc557

Download Submit
C:\Users\Admin\AppData\Local\Temp\ckeenqa

Filesize
35KB

MD5
f6ad8ad2d6df0a7b2274367c266e1ee2

SHA1
755025c72d2042639ef8d735eb45f1a0712afee2

SHA256
c94d25a9d3c8b0233c7c69e21fb257103f0bedd618331d7587f1e7b34852c2a4

SHA512
34774dffc31c4087f242242f069add248d0622a7148dfb97ceb41d0e387dc72b258f34229a5ff1e7d41f80872c7cfcbf6e0b1c1376259b70f694e2e93228ddfe

Download Submit
memory/1132-27-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1132-3-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1132-1-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1132-2-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1132-0-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1408-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1408-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1408-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1408-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1408-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1408-73-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1756-68-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1756-42-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1756-40-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/1756-41-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/3324-74-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-77-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-69-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-71-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-75-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-76-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-70-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-78-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-79-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-80-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-81-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-82-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-83-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-84-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3324-85-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads