darkcomet | 6679a157968488d2f8af8206da59398882810f62b27ac2cf21b781a36d4b5e40

General

Target

8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe
Size

887KB
MD5

8f4ca87cc028e9a6479df77f44ddfc55
SHA1

3cdcdc3bb8f263f2682559569f7383437f819b6b
SHA256

6679a157968488d2f8af8206da59398882810f62b27ac2cf21b781a36d4b5e40
SHA512

d0b6de3227409c66c7f9c867bde969f61bc5124dea17b508684505378ba75d1ffa5f6efe177d5f246a2f0a6f475cc7428d5efa6b48ec009e5b8fdcff0679e8fd
SSDEEP

24576:pAzTNJKOtfxLmn9JzIp0EJPQE2uC5b6ek11g+Yx6q9Aj:k8M0t3uCHkk+YxM

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

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

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\MSDCSC\\msdcsc.exe"	vbc.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2220 msdcsc.exe
Loads dropped DLL 1 IoCs

Processes:

vbc.exe

pid process

1724 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

pid	process
2220	msdcsc.exe

pid	process
1724	vbc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

vbc.exe8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\ValueName = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\filename.exe\""	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe

description pid process target process

PID 2684 set thread context of 1724 2684 8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe vbc.exe

description	pid	process	target process
PID 2684 set thread context of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe

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

Processes:

msdcsc.exe8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exevbc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

vbc.exe8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1724	vbc.exe
Token: SeSecurityPrivilege	1724	vbc.exe
Token: SeTakeOwnershipPrivilege	1724	vbc.exe
Token: SeLoadDriverPrivilege	1724	vbc.exe
Token: SeSystemProfilePrivilege	1724	vbc.exe
Token: SeSystemtimePrivilege	1724	vbc.exe
Token: SeProfSingleProcessPrivilege	1724	vbc.exe
Token: SeIncBasePriorityPrivilege	1724	vbc.exe
Token: SeCreatePagefilePrivilege	1724	vbc.exe
Token: SeBackupPrivilege	1724	vbc.exe
Token: SeRestorePrivilege	1724	vbc.exe
Token: SeShutdownPrivilege	1724	vbc.exe
Token: SeDebugPrivilege	1724	vbc.exe
Token: SeSystemEnvironmentPrivilege	1724	vbc.exe
Token: SeChangeNotifyPrivilege	1724	vbc.exe
Token: SeRemoteShutdownPrivilege	1724	vbc.exe
Token: SeUndockPrivilege	1724	vbc.exe
Token: SeManageVolumePrivilege	1724	vbc.exe
Token: SeImpersonatePrivilege	1724	vbc.exe
Token: SeCreateGlobalPrivilege	1724	vbc.exe
Token: 33	1724	vbc.exe
Token: 34	1724	vbc.exe
Token: 35	1724	vbc.exe
Token: SeDebugPrivilege	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exevbc.exe

description	pid	process	target process
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 2684 wrote to memory of 1724	2684	8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe	vbc.exe
PID 1724 wrote to memory of 2220	1724	vbc.exe	msdcsc.exe
PID 1724 wrote to memory of 2220	1724	vbc.exe	msdcsc.exe
PID 1724 wrote to memory of 2220	1724	vbc.exe	msdcsc.exe
PID 1724 wrote to memory of 2220	1724	vbc.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8f4ca87cc028e9a6479df77f44ddfc55_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2684
- 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:1724
- - C:\MSDCSC\msdcsc.exe
    "C:\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2220

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

\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/1724-9-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-31-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-10-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-15-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-17-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-18-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-16-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1724-3-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-5-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-12-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-8-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-11-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-7-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/1724-19-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/2684-2-0x0000000074730000-0x0000000074CDB000-memory.dmp

Filesize
5.7MB

Download
memory/2684-22-0x0000000074730000-0x0000000074CDB000-memory.dmp

Filesize
5.7MB

Download
memory/2684-1-0x0000000074730000-0x0000000074CDB000-memory.dmp

Filesize
5.7MB

Download
memory/2684-0-0x0000000074731000-0x0000000074732000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads