darkcomet | 90258ba478bc7d9e0ac1150bc3c28cf221644938ae1ef57e97e8b9c0a74947ee

General

Target

fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe
Size

1.4MB
MD5

fc4a04c594d1edfd93f9e8730080f4e4
SHA1

4e66674709ebcb06ce110c4189e653f8a092e2e1
SHA256

90258ba478bc7d9e0ac1150bc3c28cf221644938ae1ef57e97e8b9c0a74947ee
SHA512

817d16bcf927d08e31daf649ab9ac70351b647474da02aa850ff20302a92aa27bdf2faf067eb93a54076d4de381f58772d26234b37a8ad1e4c62d557fc182c2f
SSDEEP

24576:0F8qFlZv4fHF5baAPpA+n4oSiBBD8Atq2T7sPyPGNv/HsAqp:0uNhBB8iP+0

Score

10^/10

darkcomet guest16_min discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

deathradder.us.to:1604

Mutex

DCMIN_MUTEX-G9B1X6X

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
HbJG9pNmfLWq
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

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
2800	IMDCSC.exe

Loads dropped DLL 1 IoCs

pid	Process
1604	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-1-5-21-1846800975-3917212583-2893086201-1000\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 2516 set thread context of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.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	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.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 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1604	vbc.exe
Token: SeSecurityPrivilege	1604	vbc.exe
Token: SeTakeOwnershipPrivilege	1604	vbc.exe
Token: SeLoadDriverPrivilege	1604	vbc.exe
Token: SeSystemProfilePrivilege	1604	vbc.exe
Token: SeSystemtimePrivilege	1604	vbc.exe
Token: SeProfSingleProcessPrivilege	1604	vbc.exe
Token: SeIncBasePriorityPrivilege	1604	vbc.exe
Token: SeCreatePagefilePrivilege	1604	vbc.exe
Token: SeBackupPrivilege	1604	vbc.exe
Token: SeRestorePrivilege	1604	vbc.exe
Token: SeShutdownPrivilege	1604	vbc.exe
Token: SeDebugPrivilege	1604	vbc.exe
Token: SeSystemEnvironmentPrivilege	1604	vbc.exe
Token: SeChangeNotifyPrivilege	1604	vbc.exe
Token: SeRemoteShutdownPrivilege	1604	vbc.exe
Token: SeUndockPrivilege	1604	vbc.exe
Token: SeManageVolumePrivilege	1604	vbc.exe
Token: SeImpersonatePrivilege	1604	vbc.exe
Token: SeCreateGlobalPrivilege	1604	vbc.exe
Token: 33	1604	vbc.exe
Token: 34	1604	vbc.exe
Token: 35	1604	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1604	2516	fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe	30
PID 1604 wrote to memory of 2800	1604	vbc.exe	31
PID 1604 wrote to memory of 2800	1604	vbc.exe	31
PID 1604 wrote to memory of 2800	1604	vbc.exe	31
PID 1604 wrote to memory of 2800	1604	vbc.exe	31

C:\Users\Admin\AppData\Local\Temp\fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc4a04c594d1edfd93f9e8730080f4e4_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- 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:1604
- - 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:2800

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/1604-21-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1604-14-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-9-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-19-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-18-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-5-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-15-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-3-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-32-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-11-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-13-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-7-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-23-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1604-22-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2516-1-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-2-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-20-0x0000000074B30000-0x00000000750DB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-0-0x0000000074B31000-0x0000000074B32000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads