darkcomet | 92013755befded11cc754eee642c9ed6eb2dd71272074b9ab748823ea2108af1

Analysis

max time kernel
148s
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
05-12-2024 05:05

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General

Target

c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Size

717KB
MD5

c609e93c11b6797a89a198bbc0d29001
SHA1

652fe111a6959c812dea190c3ef9623b68b2fd3e
SHA256

92013755befded11cc754eee642c9ed6eb2dd71272074b9ab748823ea2108af1
SHA512

2dac90014e5e9fe843e93369327de214f06447838b6328a68ca37af4df93c9b6bc8256cbf7dccceb314b773b53a78c4794fe245bed29dffcd81623131cc2337c
SSDEEP

12288:PaAchpWsuVTv7ItY8XljyypHP7cOLBev03hlULsmWZ++09ZcKDVsudD:yAEENIq8XwyVPQclDq/+WnpsMD

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
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:\\Windupdt\\winupdate.exe"	c609e93c11b6797a89a198bbc0d29001_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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2984	winupdate.exe

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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	c609e93c11b6797a89a198bbc0d29001_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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2984	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeSecurityPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeSystemtimePrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeBackupPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeRestorePrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeShutdownPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeDebugPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeUndockPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeManageVolumePrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeImpersonatePrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: 33	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: 34	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: 35	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: 36	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2984	winupdate.exe
Token: SeSecurityPrivilege	2984	winupdate.exe
Token: SeTakeOwnershipPrivilege	2984	winupdate.exe
Token: SeLoadDriverPrivilege	2984	winupdate.exe
Token: SeSystemProfilePrivilege	2984	winupdate.exe
Token: SeSystemtimePrivilege	2984	winupdate.exe
Token: SeProfSingleProcessPrivilege	2984	winupdate.exe
Token: SeIncBasePriorityPrivilege	2984	winupdate.exe
Token: SeCreatePagefilePrivilege	2984	winupdate.exe
Token: SeBackupPrivilege	2984	winupdate.exe
Token: SeRestorePrivilege	2984	winupdate.exe
Token: SeShutdownPrivilege	2984	winupdate.exe
Token: SeDebugPrivilege	2984	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2984	winupdate.exe
Token: SeChangeNotifyPrivilege	2984	winupdate.exe
Token: SeRemoteShutdownPrivilege	2984	winupdate.exe
Token: SeUndockPrivilege	2984	winupdate.exe
Token: SeManageVolumePrivilege	2984	winupdate.exe
Token: SeImpersonatePrivilege	2984	winupdate.exe
Token: SeCreateGlobalPrivilege	2984	winupdate.exe
Token: 33	2984	winupdate.exe
Token: 34	2984	winupdate.exe
Token: 35	2984	winupdate.exe
Token: 36	2984	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2984	winupdate.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 556 wrote to memory of 2984	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe	83
PID 556 wrote to memory of 2984	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe	83
PID 556 wrote to memory of 2984	556	c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c609e93c11b6797a89a198bbc0d29001_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:556
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.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:2984

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

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Downloads

C:\Windupdt\winupdate.exe

Filesize
717KB

MD5
c609e93c11b6797a89a198bbc0d29001

SHA1
652fe111a6959c812dea190c3ef9623b68b2fd3e

SHA256
92013755befded11cc754eee642c9ed6eb2dd71272074b9ab748823ea2108af1

SHA512
2dac90014e5e9fe843e93369327de214f06447838b6328a68ca37af4df93c9b6bc8256cbf7dccceb314b773b53a78c4794fe245bed29dffcd81623131cc2337c

Download Submit
memory/556-0-0x00000000024F0000-0x00000000024F1000-memory.dmp

Filesize
4KB

Download
memory/556-34-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-40-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-42-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-37-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-38-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-39-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-35-0x0000000000810000-0x0000000000811000-memory.dmp

Filesize
4KB

Download
memory/2984-41-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-36-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-43-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-44-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-45-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-46-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-47-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-48-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2984-49-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads