darkcomet | df3f0e1cbff0df311e1d49f45455c557c1602cff5ed602792477eafff580d139

Analysis

max time kernel
105s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20250313-en
resource tags

arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
submitted
17/03/2025, 10:06

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General

Target

JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe
Size

716KB
MD5

7dc6bfdb54d5e1cdf7208106fe2c2491
SHA1

91262b827d7e60b03d1bd487763fb5849bdab019
SHA256

df3f0e1cbff0df311e1d49f45455c557c1602cff5ed602792477eafff580d139
SHA512

bfb0eaaeb4ca5a10f31eb22b96e8c0ce8a975a006c73dbcfc2a7275323e5065bcc7df9860c43b779a1cfb0649c914ee312528356750c85632aadcaba79c6313f
SSDEEP

12288:lcOl59OsbsNOssoSTlDf1dFJ/gvhPcyQ1dgrQGFjC1C:lll5xsNJoj1d34pHQnQQOjEC

Score

10^/10

darkcomet guest16 defense_evasion discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

jakeyboy159.no-ip.org:1414

Mutex

DC_MUTEX-BQWSV5E

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Wb2K7x0aYnY5
install
true
offline_keylogger
true
persistence
true
reg_key
rundll32

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:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	vbc.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4456	attrib.exe
4584	attrib.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\{Binda}.exe	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\{Binda}.exe	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe

Executes dropped EXE 1 IoCs

pid	Process
5776	msdcsc.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-1-5-21-1279544337-3716153908-718418795-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5000 set thread context of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	vbc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	388	vbc.exe
Token: SeSecurityPrivilege	388	vbc.exe
Token: SeTakeOwnershipPrivilege	388	vbc.exe
Token: SeLoadDriverPrivilege	388	vbc.exe
Token: SeSystemProfilePrivilege	388	vbc.exe
Token: SeSystemtimePrivilege	388	vbc.exe
Token: SeProfSingleProcessPrivilege	388	vbc.exe
Token: SeIncBasePriorityPrivilege	388	vbc.exe
Token: SeCreatePagefilePrivilege	388	vbc.exe
Token: SeBackupPrivilege	388	vbc.exe
Token: SeRestorePrivilege	388	vbc.exe
Token: SeShutdownPrivilege	388	vbc.exe
Token: SeDebugPrivilege	388	vbc.exe
Token: SeSystemEnvironmentPrivilege	388	vbc.exe
Token: SeChangeNotifyPrivilege	388	vbc.exe
Token: SeRemoteShutdownPrivilege	388	vbc.exe
Token: SeUndockPrivilege	388	vbc.exe
Token: SeManageVolumePrivilege	388	vbc.exe
Token: SeImpersonatePrivilege	388	vbc.exe
Token: SeCreateGlobalPrivilege	388	vbc.exe
Token: 33	388	vbc.exe
Token: 34	388	vbc.exe
Token: 35	388	vbc.exe
Token: 36	388	vbc.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 5000 wrote to memory of 388	5000	JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe	90
PID 388 wrote to memory of 4812	388	vbc.exe	91
PID 388 wrote to memory of 4812	388	vbc.exe	91
PID 388 wrote to memory of 4812	388	vbc.exe	91
PID 388 wrote to memory of 4196	388	vbc.exe	92
PID 388 wrote to memory of 4196	388	vbc.exe	92
PID 388 wrote to memory of 4196	388	vbc.exe	92
PID 4196 wrote to memory of 4456	4196	cmd.exe	95
PID 4196 wrote to memory of 4456	4196	cmd.exe	95
PID 4196 wrote to memory of 4456	4196	cmd.exe	95
PID 4812 wrote to memory of 4584	4812	cmd.exe	96
PID 4812 wrote to memory of 4584	4812	cmd.exe	96
PID 4812 wrote to memory of 4584	4812	cmd.exe	96
PID 388 wrote to memory of 5776	388	vbc.exe	97
PID 388 wrote to memory of 5776	388	vbc.exe	97
PID 388 wrote to memory of 5776	388	vbc.exe	97

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4584	attrib.exe
4456	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7dc6bfdb54d5e1cdf7208106fe2c2491.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5000
- 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
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:388
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4812
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:4584
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4196
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:4456
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5776

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/388-3-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/388-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/388-5-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/388-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/388-9-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/388-72-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5000-0-0x0000000074E72000-0x0000000074E73000-memory.dmp

Filesize
4KB

Download
memory/5000-1-0x0000000074E70000-0x0000000075421000-memory.dmp

Filesize
5.7MB

Download
memory/5000-2-0x0000000074E70000-0x0000000075421000-memory.dmp

Filesize
5.7MB

Download
memory/5000-13-0x0000000074E70000-0x0000000075421000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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