darkcomet | 256844f7896d110ca48165fd4171b6a0f74c53348847a2d53439ac69a19cbf34

Analysis

max time kernel
150s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-01-2025 21:12

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General

Target

JaffaCakes118_6fb02131b924636a32833678fcb08690.exe
Size

730KB
MD5

6fb02131b924636a32833678fcb08690
SHA1

d9f298aaf401048496632a357dbe7d6686719caf
SHA256

256844f7896d110ca48165fd4171b6a0f74c53348847a2d53439ac69a19cbf34
SHA512

e7fa9e33f926f0bd7f676de7a3cc07dd97b178967a23914290fa85ed17fcd9ab51673997b60808572e1f2e8469dd7a031482d11c29c54873e4984ebfe62f8b4e
SSDEEP

12288:7Q9HfQVJUCSmqrdLTU1afextpqVjuQ3+ZOm8mJM4CWRPvCzsGiZu1Flt6Km9kk8g:7rkTU1tIRrZrmJ9PFZgrmP3aGRM/q

Score

10^/10

darkcomet victims discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Victims

marinikework.no-ip.biz:81

Mutex

DC_MUTEX-PXVT27J

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
CBlGa19lbxro
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
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\\Documents\\MSDCSC\\msdcsc.exe"	help.exe

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

pid	Process
2780	attrib.exe
304	attrib.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.pif	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.pif	help.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.pif	msdcsc.exe

Executes dropped EXE 4 IoCs

pid	Process
1040	help.exe
2328	help.exe
2724	msdcsc.exe
2648	msdcsc.exe

Loads dropped DLL 4 IoCs

pid	Process
3048	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe
1040	help.exe
2328	help.exe
2724	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\help = "C:\\Users\\Admin\\AppData\\Roaming\\InstallDir\\help.exe"	help.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\help = "C:\\Users\\Admin\\AppData\\Roaming\\InstallDir\\help.exe"	help.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	help.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1040 set thread context of 2328	1040	help.exe	31
PID 2724 set thread context of 2648	2724	msdcsc.exe	39

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 10 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	msdcsc.exe
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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	help.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	help.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2648	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2328	help.exe
Token: SeSecurityPrivilege	2328	help.exe
Token: SeTakeOwnershipPrivilege	2328	help.exe
Token: SeLoadDriverPrivilege	2328	help.exe
Token: SeSystemProfilePrivilege	2328	help.exe
Token: SeSystemtimePrivilege	2328	help.exe
Token: SeProfSingleProcessPrivilege	2328	help.exe
Token: SeIncBasePriorityPrivilege	2328	help.exe
Token: SeCreatePagefilePrivilege	2328	help.exe
Token: SeBackupPrivilege	2328	help.exe
Token: SeRestorePrivilege	2328	help.exe
Token: SeShutdownPrivilege	2328	help.exe
Token: SeDebugPrivilege	2328	help.exe
Token: SeSystemEnvironmentPrivilege	2328	help.exe
Token: SeChangeNotifyPrivilege	2328	help.exe
Token: SeRemoteShutdownPrivilege	2328	help.exe
Token: SeUndockPrivilege	2328	help.exe
Token: SeManageVolumePrivilege	2328	help.exe
Token: SeImpersonatePrivilege	2328	help.exe
Token: SeCreateGlobalPrivilege	2328	help.exe
Token: 33	2328	help.exe
Token: 34	2328	help.exe
Token: 35	2328	help.exe
Token: SeIncreaseQuotaPrivilege	2648	msdcsc.exe
Token: SeSecurityPrivilege	2648	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2648	msdcsc.exe
Token: SeLoadDriverPrivilege	2648	msdcsc.exe
Token: SeSystemProfilePrivilege	2648	msdcsc.exe
Token: SeSystemtimePrivilege	2648	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2648	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2648	msdcsc.exe
Token: SeCreatePagefilePrivilege	2648	msdcsc.exe
Token: SeBackupPrivilege	2648	msdcsc.exe
Token: SeRestorePrivilege	2648	msdcsc.exe
Token: SeShutdownPrivilege	2648	msdcsc.exe
Token: SeDebugPrivilege	2648	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2648	msdcsc.exe
Token: SeChangeNotifyPrivilege	2648	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2648	msdcsc.exe
Token: SeUndockPrivilege	2648	msdcsc.exe
Token: SeManageVolumePrivilege	2648	msdcsc.exe
Token: SeImpersonatePrivilege	2648	msdcsc.exe
Token: SeCreateGlobalPrivilege	2648	msdcsc.exe
Token: 33	2648	msdcsc.exe
Token: 34	2648	msdcsc.exe
Token: 35	2648	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2648	msdcsc.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 1040	3048	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe	30
PID 3048 wrote to memory of 1040	3048	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe	30
PID 3048 wrote to memory of 1040	3048	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe	30
PID 3048 wrote to memory of 1040	3048	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe	30
PID 3048 wrote to memory of 1040	3048	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe	30
PID 3048 wrote to memory of 1040	3048	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe	30
PID 3048 wrote to memory of 1040	3048	JaffaCakes118_6fb02131b924636a32833678fcb08690.exe	30
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 1040 wrote to memory of 2328	1040	help.exe	31
PID 2328 wrote to memory of 2828	2328	help.exe	32
PID 2328 wrote to memory of 2828	2328	help.exe	32
PID 2328 wrote to memory of 2828	2328	help.exe	32
PID 2328 wrote to memory of 2828	2328	help.exe	32
PID 2328 wrote to memory of 2240	2328	help.exe	33
PID 2328 wrote to memory of 2240	2328	help.exe	33
PID 2328 wrote to memory of 2240	2328	help.exe	33
PID 2328 wrote to memory of 2240	2328	help.exe	33
PID 2328 wrote to memory of 2724	2328	help.exe	34
PID 2328 wrote to memory of 2724	2328	help.exe	34
PID 2328 wrote to memory of 2724	2328	help.exe	34
PID 2328 wrote to memory of 2724	2328	help.exe	34
PID 2328 wrote to memory of 2724	2328	help.exe	34
PID 2328 wrote to memory of 2724	2328	help.exe	34
PID 2328 wrote to memory of 2724	2328	help.exe	34
PID 2240 wrote to memory of 2780	2240	cmd.exe	37
PID 2240 wrote to memory of 2780	2240	cmd.exe	37
PID 2240 wrote to memory of 2780	2240	cmd.exe	37
PID 2240 wrote to memory of 2780	2240	cmd.exe	37
PID 2828 wrote to memory of 304	2828	cmd.exe	38
PID 2828 wrote to memory of 304	2828	cmd.exe	38
PID 2828 wrote to memory of 304	2828	cmd.exe	38
PID 2828 wrote to memory of 304	2828	cmd.exe	38
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2724 wrote to memory of 2648	2724	msdcsc.exe	39
PID 2648 wrote to memory of 1876	2648	msdcsc.exe	40
PID 2648 wrote to memory of 1876	2648	msdcsc.exe	40

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2780	attrib.exe
304	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6fb02131b924636a32833678fcb08690.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6fb02131b924636a32833678fcb08690.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Users\Admin\AppData\Roaming\InstallDir\help.exe
  C:\Users\Admin\AppData\Roaming\InstallDir\help.exe
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1040
- - C:\Users\Admin\AppData\Roaming\InstallDir\help.exe
    C:\Users\Admin\AppData\Roaming\InstallDir\help.exe
    3⤵
    - Modifies WinLogon for persistence
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2328
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\InstallDir\help.exe" +s +h
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2828
    - - C:\Windows\SysWOW64\attrib.exe
        
        attrib "C:\Users\Admin\AppData\Roaming\InstallDir\help.exe" +s +h
        5⤵
        Sets file to hidden
        System Location Discovery: System Language Discovery
        Views/modifies file attributes
        
        PID:304
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\InstallDir" +s +h
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2240
    - - C:\Windows\SysWOW64\attrib.exe
        
        attrib "C:\Users\Admin\AppData\Roaming\InstallDir" +s +h
        5⤵
        Sets file to hidden
        System Location Discovery: System Language Discovery
        Views/modifies file attributes
        
        PID:2780
  - - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      4⤵
      Drops startup file
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2724
    - - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        
        C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2648
      - C:\Windows\SysWOW64\notepad.exe
        
        notepad
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:1876

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\InstallDir\help.exe

Filesize
730KB

MD5
6fb02131b924636a32833678fcb08690

SHA1
d9f298aaf401048496632a357dbe7d6686719caf

SHA256
256844f7896d110ca48165fd4171b6a0f74c53348847a2d53439ac69a19cbf34

SHA512
e7fa9e33f926f0bd7f676de7a3cc07dd97b178967a23914290fa85ed17fcd9ab51673997b60808572e1f2e8469dd7a031482d11c29c54873e4984ebfe62f8b4e

Download Submit
memory/1876-75-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2328-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-17-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2328-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-27-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-35-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-33-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-36-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-37-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-38-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2328-47-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2648-73-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2648-74-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3048-0-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads