darkcomet | 1c51fa06439b97b06dd793b6ffa378672233047008f7a92b75b85a4dbf7d1c64

Analysis

max time kernel
103s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2025, 16:37

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General

Target

JaffaCakes118_8ad729b2555724910616233931ad7949.exe
Size

1.0MB
MD5

8ad729b2555724910616233931ad7949
SHA1

1e324fbe98fedf92c459e74675cfccd943a95f32
SHA256

1c51fa06439b97b06dd793b6ffa378672233047008f7a92b75b85a4dbf7d1c64
SHA512

3078a06641cd0e1b954d4105da844d3158010c077ed31a820945e0d1d1cf0e4afd7ebe5842187204532107a5ead7811f71abcc37fec18efb0c86f94a15cfbfed
SSDEEP

12288:uYpo/eUYOI4L2aZHZp7Ol8Oi1KxVwWnN1L2wvFt4MQzQ4WD9isjgk0cE3ZjpTANS:LK20R/A4m97sxgUdz3pZzfBpQyp5mi

Score

10^/10

darkcomet infected discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Infected

486.no-ip.info:3070

Mutex

DC_MUTEX-9366JHV

Attributes

InstallPath
Winupd\winupd.exe
gencode
g�9XqzgXExMy
install
true
offline_keylogger
true
persistence
true
reg_key
windows Update

rc4.plain

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:\\Winupd\\winupd.exe"	vbc.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 3 IoCs

pid	Process
764	vbc.exe
1584	winupd.exe
220	winupd.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-1-5-21-805952410-2104024357-1716932545-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\windows Update = "C:\\Winupd\\winupd.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1536 set thread context of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8ad729b2555724910616233931ad7949.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2732	cmd.exe
3996	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3996	PING.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	764	vbc.exe
Token: SeSecurityPrivilege	764	vbc.exe
Token: SeTakeOwnershipPrivilege	764	vbc.exe
Token: SeLoadDriverPrivilege	764	vbc.exe
Token: SeSystemProfilePrivilege	764	vbc.exe
Token: SeSystemtimePrivilege	764	vbc.exe
Token: SeProfSingleProcessPrivilege	764	vbc.exe
Token: SeIncBasePriorityPrivilege	764	vbc.exe
Token: SeCreatePagefilePrivilege	764	vbc.exe
Token: SeBackupPrivilege	764	vbc.exe
Token: SeRestorePrivilege	764	vbc.exe
Token: SeShutdownPrivilege	764	vbc.exe
Token: SeDebugPrivilege	764	vbc.exe
Token: SeSystemEnvironmentPrivilege	764	vbc.exe
Token: SeChangeNotifyPrivilege	764	vbc.exe
Token: SeRemoteShutdownPrivilege	764	vbc.exe
Token: SeUndockPrivilege	764	vbc.exe
Token: SeManageVolumePrivilege	764	vbc.exe
Token: SeImpersonatePrivilege	764	vbc.exe
Token: SeCreateGlobalPrivilege	764	vbc.exe
Token: 33	764	vbc.exe
Token: 34	764	vbc.exe
Token: 35	764	vbc.exe
Token: 36	764	vbc.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 1536 wrote to memory of 764	1536	JaffaCakes118_8ad729b2555724910616233931ad7949.exe	88
PID 764 wrote to memory of 1584	764	vbc.exe	91
PID 764 wrote to memory of 1584	764	vbc.exe	91
PID 764 wrote to memory of 1584	764	vbc.exe	91
PID 764 wrote to memory of 2732	764	vbc.exe	93
PID 764 wrote to memory of 2732	764	vbc.exe	93
PID 764 wrote to memory of 2732	764	vbc.exe	93
PID 2732 wrote to memory of 3996	2732	cmd.exe	96
PID 2732 wrote to memory of 3996	2732	cmd.exe	96
PID 2732 wrote to memory of 3996	2732	cmd.exe	96
PID 436 wrote to memory of 220	436	cmd.exe	97
PID 436 wrote to memory of 220	436	cmd.exe	97
PID 436 wrote to memory of 220	436	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8ad729b2555724910616233931ad7949.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8ad729b2555724910616233931ad7949.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:764
- - C:\Winupd\winupd.exe
    "C:\Winupd\winupd.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1584
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2732
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 5
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3996

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Winupd\winupd.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:436
- C:\Winupd\winupd.exe
  C:\Winupd\winupd.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/764-5-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/764-8-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/764-12-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/764-11-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/764-14-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/764-26-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1536-0-0x0000000075392000-0x0000000075393000-memory.dmp

Filesize
4KB

Download
memory/1536-1-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download
memory/1536-2-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download
memory/1536-13-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads