darkcomet | 3f6e94af8a5d5a6690dc15e70fbb92b9c7799c9143d9ee1dac6a4cc0f3b1da7f

Analysis

max time kernel
150s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 22:11

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General

Target

f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Size

658KB
MD5

f6ae1759275f7ae83110cb1c907a7c8d
SHA1

8b5434e0250bd32da36c5a2b1b1d408fcee28b56
SHA256

3f6e94af8a5d5a6690dc15e70fbb92b9c7799c9143d9ee1dac6a4cc0f3b1da7f
SHA512

314248c64797f599cc29c2e554b2985360fbfdb910550b7eb10e818ef4c74aa5cc68657932a27a5c1266da55eb21f736e2faa3188e0b3b5313f6f2936c725d6c
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hL:KZ1xuVVjfFoynPaVBUR8f+kN10EBd

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:1604

Mutex

DC_MUTEX-8RF1JQC

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Ci3Ce0taJNxs
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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:

f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\MSDCSC\\msdcsc.exe"	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
1996	attrib.exe
2068	attrib.exe

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:

f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
3732	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\MSDCSC\\msdcsc.exe"	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid	Process
3732	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeSecurityPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeBackupPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeRestorePrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeShutdownPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeDebugPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeUndockPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: 33	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: 34	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: 35	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: 36	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3732	msdcsc.exe
Token: SeSecurityPrivilege	3732	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3732	msdcsc.exe
Token: SeLoadDriverPrivilege	3732	msdcsc.exe
Token: SeSystemProfilePrivilege	3732	msdcsc.exe
Token: SeSystemtimePrivilege	3732	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3732	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3732	msdcsc.exe
Token: SeCreatePagefilePrivilege	3732	msdcsc.exe
Token: SeBackupPrivilege	3732	msdcsc.exe
Token: SeRestorePrivilege	3732	msdcsc.exe
Token: SeShutdownPrivilege	3732	msdcsc.exe
Token: SeDebugPrivilege	3732	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3732	msdcsc.exe
Token: SeChangeNotifyPrivilege	3732	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3732	msdcsc.exe
Token: SeUndockPrivilege	3732	msdcsc.exe
Token: SeManageVolumePrivilege	3732	msdcsc.exe
Token: SeImpersonatePrivilege	3732	msdcsc.exe
Token: SeCreateGlobalPrivilege	3732	msdcsc.exe
Token: 33	3732	msdcsc.exe
Token: 34	3732	msdcsc.exe
Token: 35	3732	msdcsc.exe
Token: 36	3732	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
3732	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.execmd.exemsdcsc.execmd.exe

description	pid	Process	procid_target
PID 4176 wrote to memory of 2600	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	88
PID 4176 wrote to memory of 2600	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	88
PID 4176 wrote to memory of 2600	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	88
PID 4176 wrote to memory of 1168	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	89
PID 4176 wrote to memory of 1168	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	89
PID 4176 wrote to memory of 1168	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	89
PID 4176 wrote to memory of 3732	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	92
PID 4176 wrote to memory of 3732	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	92
PID 4176 wrote to memory of 3732	4176	f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe	92
PID 1168 wrote to memory of 2068	1168	cmd.exe	94
PID 1168 wrote to memory of 2068	1168	cmd.exe	94
PID 1168 wrote to memory of 2068	1168	cmd.exe	94
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 2600 wrote to memory of 1996	2600	cmd.exe	95
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 2600 wrote to memory of 1996	2600	cmd.exe	95
PID 2600 wrote to memory of 1996	2600	cmd.exe	95
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93
PID 3732 wrote to memory of 4940	3732	msdcsc.exe	93

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
2068	attrib.exe
1996	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2600
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\f6ae1759275f7ae83110cb1c907a7c8d_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1168
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2068
- C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe"
  2⤵
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3732
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:4940

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
f6ae1759275f7ae83110cb1c907a7c8d

SHA1
8b5434e0250bd32da36c5a2b1b1d408fcee28b56

SHA256
3f6e94af8a5d5a6690dc15e70fbb92b9c7799c9143d9ee1dac6a4cc0f3b1da7f

SHA512
314248c64797f599cc29c2e554b2985360fbfdb910550b7eb10e818ef4c74aa5cc68657932a27a5c1266da55eb21f736e2faa3188e0b3b5313f6f2936c725d6c

Download Submit
memory/3732-13-0x0000000002110000-0x0000000002111000-memory.dmp

Filesize
4KB

Download
memory/3732-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4176-0-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/4176-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4940-14-0x00000000008A0000-0x00000000008A1000-memory.dmp

Filesize
4KB

Download