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
2768	IMDCSC.exe

Loads dropped DLL 1 IoCs

pid	Process
1776	vbc.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-1-5-21-3533259084-2542256011-65585152-1000\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 1588 set thread context of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30

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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IMDCSC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1776	vbc.exe
Token: SeSecurityPrivilege	1776	vbc.exe
Token: SeTakeOwnershipPrivilege	1776	vbc.exe
Token: SeLoadDriverPrivilege	1776	vbc.exe
Token: SeSystemProfilePrivilege	1776	vbc.exe
Token: SeSystemtimePrivilege	1776	vbc.exe
Token: SeProfSingleProcessPrivilege	1776	vbc.exe
Token: SeIncBasePriorityPrivilege	1776	vbc.exe
Token: SeCreatePagefilePrivilege	1776	vbc.exe
Token: SeBackupPrivilege	1776	vbc.exe
Token: SeRestorePrivilege	1776	vbc.exe
Token: SeShutdownPrivilege	1776	vbc.exe
Token: SeDebugPrivilege	1776	vbc.exe
Token: SeSystemEnvironmentPrivilege	1776	vbc.exe
Token: SeChangeNotifyPrivilege	1776	vbc.exe
Token: SeRemoteShutdownPrivilege	1776	vbc.exe
Token: SeUndockPrivilege	1776	vbc.exe
Token: SeManageVolumePrivilege	1776	vbc.exe
Token: SeImpersonatePrivilege	1776	vbc.exe
Token: SeCreateGlobalPrivilege	1776	vbc.exe
Token: 33	1776	vbc.exe
Token: 34	1776	vbc.exe
Token: 35	1776	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1588 wrote to memory of 1776	1588	JaffaCakes118_6ac77758173c895c9a0ece583e8a4881.exe	30
PID 1776 wrote to memory of 2768	1776	vbc.exe	31
PID 1776 wrote to memory of 2768	1776	vbc.exe	31
PID 1776 wrote to memory of 2768	1776	vbc.exe	31
PID 1776 wrote to memory of 2768	1776	vbc.exe	31

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:1588
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1776
- - 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:2768

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
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/1588-2-0x0000000074D80000-0x000000007532B000-memory.dmp

Filesize
5.7MB

Download
memory/1588-0-0x0000000074D81000-0x0000000074D82000-memory.dmp

Filesize
4KB

Download
memory/1588-1-0x0000000074D80000-0x000000007532B000-memory.dmp

Filesize
5.7MB

Download
memory/1588-18-0x0000000074D80000-0x000000007532B000-memory.dmp

Filesize
5.7MB

Download
memory/1776-10-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-8-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-15-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-12-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-11-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-28-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-9-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-16-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-7-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-5-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1776-3-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-17-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-19-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/1776-20-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads