darkcomet | b9510200c418c1a8ac8fef360f871b7a865c3d26471fcbce7ee670ea5133e5d0

General

Target

JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe
Size

992KB
MD5

6ac77758173c895c9a0ece583e8a4881
SHA1

229817780edb32eb2689cc5b6c21a11a32f47b27
SHA256

b9510200c418c1a8ac8fef360f871b7a865c3d26471fcbce7ee670ea5133e5d0
SHA512

38c10a09d77c707189c84eb8d2b22ae2c5ceaf6898b597254ae4514c0f15452ce7e124b88ff096fc62efe63572b4b024cb8c0f1fb8c8dbf9f1652a9d062d52d4
SSDEEP

24576:taCesO0VIF0cjZJprYGr2yvptr6MAgKJT3/aZ7MLTAQ:tUjbrb5AgQi7M

Score

10^/10

darkcomet temoin discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

TEMOIN

C2

127.0.0.1:81

Mutex

DCMIN_MUTEX-RGRCC9T

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
FsQYR63sfd9G
install
true
offline_keylogger
true
persistence
false
reg_key
DarkComet RAT

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
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\\Documents\\DCSCMIN\\IMDCSC.exe"	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
4964	IMDCSC.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 1 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\DarkComet RAT = "C:\\Users\\Admin\\Documents\\DCSCMIN\\IMDCSC.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 316 set thread context of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84

System Location Discovery: System Language Discovery 1 TTPs 3 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	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IMDCSC.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

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

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 316 wrote to memory of 1012	316	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	84
PID 1012 wrote to memory of 4964	1012	vbc.exe	85
PID 1012 wrote to memory of 4964	1012	vbc.exe	85
PID 1012 wrote to memory of 4964	1012	vbc.exe	85

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:316
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - 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\Documents\DCSCMIN\IMDCSC.exe
    "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/316-0-0x0000000075422000-0x0000000075423000-memory.dmp

Filesize
4KB

Download
memory/316-1-0x0000000075420000-0x00000000759D1000-memory.dmp

Filesize
5.7MB

Download
memory/316-2-0x0000000075420000-0x00000000759D1000-memory.dmp

Filesize
5.7MB

Download
memory/316-20-0x0000000075420000-0x00000000759D1000-memory.dmp

Filesize
5.7MB

Download
memory/1012-3-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1012-4-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1012-6-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1012-7-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1012-8-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1012-21-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads