darkcomet | b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-10-2024 06:23

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General

Target

55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.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

Processes:

55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe

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"	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
behavioral2/files/0x000b000000023b85-33.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

Processes:

55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

msdcsc.exemsdcsc.exe

pid	Process
4736	msdcsc.exe
5012	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exemsdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msdcsc.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\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.

Processes:

resource	yara_rule
behavioral2/memory/2148-2-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/2148-1-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/2148-3-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/2148-26-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/4736-41-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/4736-40-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/4736-39-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe
behavioral2/memory/4736-67-0x0000000000400000-0x0000000000554000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exemsdcsc.exe

description	pid	Process	procid_target
PID 2148 set thread context of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 4736 set thread context of 5012	4736	msdcsc.exe	89

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

Processes:

55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exemsdcsc.exemsdcsc.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeSecurityPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeBackupPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeRestorePrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeShutdownPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeDebugPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeUndockPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: 33	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: 34	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: 35	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: 36	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5012	msdcsc.exe
Token: SeSecurityPrivilege	5012	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5012	msdcsc.exe
Token: SeLoadDriverPrivilege	5012	msdcsc.exe
Token: SeSystemProfilePrivilege	5012	msdcsc.exe
Token: SeSystemtimePrivilege	5012	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5012	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5012	msdcsc.exe
Token: SeCreatePagefilePrivilege	5012	msdcsc.exe
Token: SeBackupPrivilege	5012	msdcsc.exe
Token: SeRestorePrivilege	5012	msdcsc.exe
Token: SeShutdownPrivilege	5012	msdcsc.exe
Token: SeDebugPrivilege	5012	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5012	msdcsc.exe
Token: SeChangeNotifyPrivilege	5012	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5012	msdcsc.exe
Token: SeUndockPrivilege	5012	msdcsc.exe
Token: SeManageVolumePrivilege	5012	msdcsc.exe
Token: SeImpersonatePrivilege	5012	msdcsc.exe
Token: SeCreateGlobalPrivilege	5012	msdcsc.exe
Token: 33	5012	msdcsc.exe
Token: 34	5012	msdcsc.exe
Token: 35	5012	msdcsc.exe
Token: 36	5012	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
5012	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exemsdcsc.exe

description	pid	Process	procid_target
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 2148 wrote to memory of 1012	2148	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	85
PID 1012 wrote to memory of 4736	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	88
PID 1012 wrote to memory of 4736	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	88
PID 1012 wrote to memory of 4736	1012	55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe	88
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89
PID 4736 wrote to memory of 5012	4736	msdcsc.exe	89

C:\Users\Admin\AppData\Local\Temp\55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Users\Admin\AppData\Local\Temp\55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\55ef299dc3a3c80f25554923566ac6a0_JaffaCakes118.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:1012
- - 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:4736
  - - 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:5012

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\jorgjrb

Filesize
35KB

MD5
f6ad8ad2d6df0a7b2274367c266e1ee2

SHA1
755025c72d2042639ef8d735eb45f1a0712afee2

SHA256
c94d25a9d3c8b0233c7c69e21fb257103f0bedd618331d7587f1e7b34852c2a4

SHA512
34774dffc31c4087f242242f069add248d0622a7148dfb97ceb41d0e387dc72b258f34229a5ff1e7d41f80872c7cfcbf6e0b1c1376259b70f694e2e93228ddfe

Download Submit
memory/1012-27-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1012-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1012-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1012-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1012-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1012-71-0x0000000000550000-0x0000000000552000-memory.dmp

Filesize
8KB

Download
memory/1012-72-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2148-3-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/2148-1-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/2148-2-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/2148-0-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/2148-26-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/4736-41-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/4736-40-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/4736-39-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/4736-67-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/5012-69-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-78-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-70-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-73-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-74-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-75-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-76-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-77-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-68-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-79-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-80-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-81-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-82-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-83-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-84-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-85-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-86-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5012-87-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download