darkcomet | 93293359fafc0adf8d6c70211674401c4ea799b96d516ac9bc7e9aa694f72f90

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16/12/2024, 10:38

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General

Target
f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Size 661KB
Sample241216-mpfrtswrez
SHA256 93293359fafc0adf8d6c70211674401c4ea799b96d516ac9bc7e9aa694f72f90
MD5 f89e6abcba5b9946e47da02cee2ced9a
SHA1 0d8f39548a5eab3f0e1e665575a7b3d54e78edb1
SHA512 0a5bf0e7b729f06c88cf65a7a66c38e39503cad4fedb750e993bba9fadd4d31838edcdee31b8f945d12d70af50e993ef41a36a40a33370642503b60e54a9b86c
SSDEEP 12288:E9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hu:IZ1xuVVjfFoynPaVBUR8f+kN10EBw
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

ashkar.no-ip.org:1604

Mutex

DC_MUTEX-G0FAELX

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
ywEaUnUCbAtD
install
true
offline_keylogger
true
persistence
true
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:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1920	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
224	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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	iexplore.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 1372	224	msdcsc.exe	87

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	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.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	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1372	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeSecurityPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeBackupPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeRestorePrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeShutdownPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeDebugPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeUndockPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: 33	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: 34	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: 35	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: 36	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	224	msdcsc.exe
Token: SeSecurityPrivilege	224	msdcsc.exe
Token: SeTakeOwnershipPrivilege	224	msdcsc.exe
Token: SeLoadDriverPrivilege	224	msdcsc.exe
Token: SeSystemProfilePrivilege	224	msdcsc.exe
Token: SeSystemtimePrivilege	224	msdcsc.exe
Token: SeProfSingleProcessPrivilege	224	msdcsc.exe
Token: SeIncBasePriorityPrivilege	224	msdcsc.exe
Token: SeCreatePagefilePrivilege	224	msdcsc.exe
Token: SeBackupPrivilege	224	msdcsc.exe
Token: SeRestorePrivilege	224	msdcsc.exe
Token: SeShutdownPrivilege	224	msdcsc.exe
Token: SeDebugPrivilege	224	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	224	msdcsc.exe
Token: SeChangeNotifyPrivilege	224	msdcsc.exe
Token: SeRemoteShutdownPrivilege	224	msdcsc.exe
Token: SeUndockPrivilege	224	msdcsc.exe
Token: SeManageVolumePrivilege	224	msdcsc.exe
Token: SeImpersonatePrivilege	224	msdcsc.exe
Token: SeCreateGlobalPrivilege	224	msdcsc.exe
Token: 33	224	msdcsc.exe
Token: 34	224	msdcsc.exe
Token: 35	224	msdcsc.exe
Token: 36	224	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1372	iexplore.exe
Token: SeSecurityPrivilege	1372	iexplore.exe
Token: SeTakeOwnershipPrivilege	1372	iexplore.exe
Token: SeLoadDriverPrivilege	1372	iexplore.exe
Token: SeSystemProfilePrivilege	1372	iexplore.exe
Token: SeSystemtimePrivilege	1372	iexplore.exe
Token: SeProfSingleProcessPrivilege	1372	iexplore.exe
Token: SeIncBasePriorityPrivilege	1372	iexplore.exe
Token: SeCreatePagefilePrivilege	1372	iexplore.exe
Token: SeBackupPrivilege	1372	iexplore.exe
Token: SeRestorePrivilege	1372	iexplore.exe
Token: SeShutdownPrivilege	1372	iexplore.exe
Token: SeDebugPrivilege	1372	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1372	iexplore.exe
Token: SeChangeNotifyPrivilege	1372	iexplore.exe
Token: SeRemoteShutdownPrivilege	1372	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1372	iexplore.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4996 wrote to memory of 3376	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe	83
PID 4996 wrote to memory of 3376	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe	83
PID 4996 wrote to memory of 3376	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe	83
PID 3376 wrote to memory of 1920	3376	cmd.exe	85
PID 3376 wrote to memory of 1920	3376	cmd.exe	85
PID 3376 wrote to memory of 1920	3376	cmd.exe	85
PID 4996 wrote to memory of 224	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe	86
PID 4996 wrote to memory of 224	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe	86
PID 4996 wrote to memory of 224	4996	f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe	86
PID 224 wrote to memory of 1372	224	msdcsc.exe	87
PID 224 wrote to memory of 1372	224	msdcsc.exe	87
PID 224 wrote to memory of 1372	224	msdcsc.exe	87
PID 224 wrote to memory of 1372	224	msdcsc.exe	87
PID 224 wrote to memory of 1372	224	msdcsc.exe	87
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88
PID 1372 wrote to memory of 1184	1372	iexplore.exe	88

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1920	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3376
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\f89e6abcba5b9946e47da02cee2ced9a_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1920
- C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
  "C:\Windows\system32\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - 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:224
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1372
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:1184

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

msdcsc.exe

Path C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Size 661KB
SHA256 93293359fafc0adf8d6c70211674401c4ea799b96d516ac9bc7e9aa694f72f90
MD5 f89e6abcba5b9946e47da02cee2ced9a
SHA1 0d8f39548a5eab3f0e1e665575a7b3d54e78edb1
SHA512 0a5bf0e7b729f06c88cf65a7a66c38e39503cad4fedb750e993bba9fadd4d31838edcdee31b8f945d12d70af50e993ef41a36a40a33370642503b60e54a9b86c
SSDEEP 12288:E9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hu:IZ1xuVVjfFoynPaVBUR8f+kN10EBw
MD5 SHA1 SHA512 SSDEEP

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memory/224-61-0x0000000002180000-0x0000000002181000-memory.dmp

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memory/224-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Download

memory/1184-64-0x0000000000B30000-0x0000000000B31000-memory.dmp

Download

memory/1372-62-0x0000000000400000-0x00000000004B2000-memory.dmp

Download

memory/4996-0-0x00000000023B0000-0x00000000023B1000-memory.dmp

Download

memory/4996-65-0x0000000000400000-0x00000000004B2000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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