darkcomet | dbd736e8fa352b96a7592c20b7958833bca74768a509610dd530f0fe69b238a2

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-10-2024 18:47

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General

Target

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Size

714KB
MD5

63c4e35d3748d8f3e00a814701a67cc2
SHA1

8da8bb2ee540b7cb21d4497c8d21dfe43abcf683
SHA256

dbd736e8fa352b96a7592c20b7958833bca74768a509610dd530f0fe69b238a2
SHA512

7ce7e8456ef9920591603bcda129a5d85ce3298872039cf21c62bcc7864e848c5676a33bee90655c331d05a11b1f412fb9637e583626a2650b989c323936ddd6
SSDEEP

12288:GaAchpWsuVTv7ItY8XljyypHP7cOLBev03hlULsmWZ++09ZcKDVsgdZ:XAEENIq8XwyVPQclDq/+WnpsSZ

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\windows\\update.exe"	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exeupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	update.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

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

update.exe

pid	Process
4692	update.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\update = "C:\\windows\\update.exe"	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

Drops file in Windows directory 3 IoCs

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

description	ioc	Process
File created	C:\windows\update.exe	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
File opened for modification	C:\windows\update.exe	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
File opened for modification	C:\windows\	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.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 2 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

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exeupdate.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	update.exe

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

update.exe63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	update.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	update.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	update.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	update.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exeupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	update.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

update.exe

pid	Process
4692	update.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exeupdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeSecurityPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeBackupPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeRestorePrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeShutdownPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeDebugPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeUndockPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: 33	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: 34	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: 35	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: 36	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4692	update.exe
Token: SeSecurityPrivilege	4692	update.exe
Token: SeTakeOwnershipPrivilege	4692	update.exe
Token: SeLoadDriverPrivilege	4692	update.exe
Token: SeSystemProfilePrivilege	4692	update.exe
Token: SeSystemtimePrivilege	4692	update.exe
Token: SeProfSingleProcessPrivilege	4692	update.exe
Token: SeIncBasePriorityPrivilege	4692	update.exe
Token: SeCreatePagefilePrivilege	4692	update.exe
Token: SeBackupPrivilege	4692	update.exe
Token: SeRestorePrivilege	4692	update.exe
Token: SeShutdownPrivilege	4692	update.exe
Token: SeDebugPrivilege	4692	update.exe
Token: SeSystemEnvironmentPrivilege	4692	update.exe
Token: SeChangeNotifyPrivilege	4692	update.exe
Token: SeRemoteShutdownPrivilege	4692	update.exe
Token: SeUndockPrivilege	4692	update.exe
Token: SeManageVolumePrivilege	4692	update.exe
Token: SeImpersonatePrivilege	4692	update.exe
Token: SeCreateGlobalPrivilege	4692	update.exe
Token: 33	4692	update.exe
Token: 34	4692	update.exe
Token: 35	4692	update.exe
Token: 36	4692	update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

update.exe

pid	Process
4692	update.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe

description	pid	Process	procid_target
PID 3660 wrote to memory of 4692	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe	85
PID 3660 wrote to memory of 4692	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe	85
PID 3660 wrote to memory of 4692	3660	63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\63c4e35d3748d8f3e00a814701a67cc2_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3660
- C:\windows\update.exe
  "C:\windows\update.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4692

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

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

Replay Monitor

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Downloads

C:\Windows\update.exe

Filesize
714KB

MD5
63c4e35d3748d8f3e00a814701a67cc2

SHA1
8da8bb2ee540b7cb21d4497c8d21dfe43abcf683

SHA256
dbd736e8fa352b96a7592c20b7958833bca74768a509610dd530f0fe69b238a2

SHA512
7ce7e8456ef9920591603bcda129a5d85ce3298872039cf21c62bcc7864e848c5676a33bee90655c331d05a11b1f412fb9637e583626a2650b989c323936ddd6

Download Submit
memory/3660-0-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/3660-10-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-16-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-18-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-13-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/4692-14-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-15-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-11-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/4692-17-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-12-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-19-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-20-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-21-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-22-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-23-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-24-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-25-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4692-26-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download