darkcomet | 258d2a0a30cc58375fb34c3fed7aed0342c5a34104ff8ab74bf41a201e78383f

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
02-01-2025 22:41

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General

Target

JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Size

659KB
MD5

68a85ba5299f90f42538534bbc36ac21
SHA1

2265394445e00c89907b6a6432e70b770b94996a
SHA256

258d2a0a30cc58375fb34c3fed7aed0342c5a34104ff8ab74bf41a201e78383f
SHA512

9b0cd4c430529fa27ce643893c6df1c4d5ff272b5eec6173f5616e0ce9da3cbf6d185e095b4df672a092f8122f4581865d454148def96cfdd8f12bc7f174e15a
SSDEEP

12288:u9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hL:6Z1xuVVjfFoynPaVBUR8f+kN10EBp

Score

10^/10

darkcomet virustotal test attack discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

virustotal test attack

szsks.no-ip.org:1605

Mutex

DC_MUTEX-LU1P8DJ

Attributes

InstallPath
Update\scupdate.exe
gencode
mnwwZKMklvmu
install
true
offline_keylogger
true
persistence
true
reg_key
SecretUpdate

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\\Update\\scupdate.exe"	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.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
3016	attrib.exe
2548	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe

Executes dropped EXE 1 IoCs

pid	Process
4920	scupdate.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SecretUpdate = "C:\\Windows\\system32\\Update\\scupdate.exe"	scupdate.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SecretUpdate = "C:\\Windows\\system32\\Update\\scupdate.exe"	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Update\scupdate.exe	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
File opened for modification	C:\Windows\SysWOW64\Update\	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
File created	C:\Windows\SysWOW64\Update\scupdate.exe	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe

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 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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	scupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4920	scupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeSecurityPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeTakeOwnershipPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeLoadDriverPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeSystemProfilePrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeSystemtimePrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeProfSingleProcessPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeIncBasePriorityPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeCreatePagefilePrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeBackupPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeRestorePrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeShutdownPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeDebugPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeSystemEnvironmentPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeChangeNotifyPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeRemoteShutdownPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeUndockPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeManageVolumePrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeImpersonatePrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeCreateGlobalPrivilege	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: 33	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: 34	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: 35	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: 36	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
Token: SeIncreaseQuotaPrivilege	4920	scupdate.exe
Token: SeSecurityPrivilege	4920	scupdate.exe
Token: SeTakeOwnershipPrivilege	4920	scupdate.exe
Token: SeLoadDriverPrivilege	4920	scupdate.exe
Token: SeSystemProfilePrivilege	4920	scupdate.exe
Token: SeSystemtimePrivilege	4920	scupdate.exe
Token: SeProfSingleProcessPrivilege	4920	scupdate.exe
Token: SeIncBasePriorityPrivilege	4920	scupdate.exe
Token: SeCreatePagefilePrivilege	4920	scupdate.exe
Token: SeBackupPrivilege	4920	scupdate.exe
Token: SeRestorePrivilege	4920	scupdate.exe
Token: SeShutdownPrivilege	4920	scupdate.exe
Token: SeDebugPrivilege	4920	scupdate.exe
Token: SeSystemEnvironmentPrivilege	4920	scupdate.exe
Token: SeChangeNotifyPrivilege	4920	scupdate.exe
Token: SeRemoteShutdownPrivilege	4920	scupdate.exe
Token: SeUndockPrivilege	4920	scupdate.exe
Token: SeManageVolumePrivilege	4920	scupdate.exe
Token: SeImpersonatePrivilege	4920	scupdate.exe
Token: SeCreateGlobalPrivilege	4920	scupdate.exe
Token: 33	4920	scupdate.exe
Token: 34	4920	scupdate.exe
Token: 35	4920	scupdate.exe
Token: 36	4920	scupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4920	scupdate.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 4392 wrote to memory of 2712	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	83
PID 4392 wrote to memory of 2712	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	83
PID 4392 wrote to memory of 2712	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	83
PID 4392 wrote to memory of 3460	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	85
PID 4392 wrote to memory of 3460	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	85
PID 4392 wrote to memory of 3460	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	85
PID 4392 wrote to memory of 4920	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	87
PID 4392 wrote to memory of 4920	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	87
PID 4392 wrote to memory of 4920	4392	JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe	87
PID 2712 wrote to memory of 3016	2712	cmd.exe	88
PID 2712 wrote to memory of 3016	2712	cmd.exe	88
PID 2712 wrote to memory of 3016	2712	cmd.exe	88
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 4920 wrote to memory of 2432	4920	scupdate.exe	89
PID 3460 wrote to memory of 2548	3460	cmd.exe	90
PID 3460 wrote to memory of 2548	3460	cmd.exe	90
PID 3460 wrote to memory of 2548	3460	cmd.exe	90

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2548	attrib.exe
3016	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.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
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_68a85ba5299f90f42538534bbc36ac21.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3460
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2548
- C:\Windows\SysWOW64\Update\scupdate.exe
  "C:\Windows\system32\Update\scupdate.exe"
  2⤵
  - Executes dropped EXE
  - 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:4920
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2432

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

C:\Windows\SysWOW64\Update\scupdate.exe

Filesize
659KB

MD5
68a85ba5299f90f42538534bbc36ac21

SHA1
2265394445e00c89907b6a6432e70b770b94996a

SHA256
258d2a0a30cc58375fb34c3fed7aed0342c5a34104ff8ab74bf41a201e78383f

SHA512
9b0cd4c430529fa27ce643893c6df1c4d5ff272b5eec6173f5616e0ce9da3cbf6d185e095b4df672a092f8122f4581865d454148def96cfdd8f12bc7f174e15a

Download Submit
memory/2432-14-0x0000000000630000-0x0000000000631000-memory.dmp

Filesize
4KB

Download
memory/4392-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4392-0-0x0000000002350000-0x0000000002351000-memory.dmp

Filesize
4KB

Download
memory/4920-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-17-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-18-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-13-0x0000000002180000-0x0000000002181000-memory.dmp

Filesize
4KB

Download
memory/4920-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-27-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4920-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads