darkcomet | 617add525b0fdbedbf2d16bc12d8457bd36eed0e547f145d99e4acacbf3a4d68

Analysis

max time kernel
149s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 13:25

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General

Target

JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Size

714KB
MD5

79eac94a1d157984f6ca5768777c697e
SHA1

3a65486b83aa4b0ed1193992de12bbe72deccbf1
SHA256

617add525b0fdbedbf2d16bc12d8457bd36eed0e547f145d99e4acacbf3a4d68
SHA512

00d7a6468cedbe158679df496a4fa5736cf6e41a6c297785f6f5a721e5b29ac3bb979e1626ab72affb31e3923a595d5861aa3ebd1eee1482a89ae20d379c7017
SSDEEP

12288:yaAchpWsuVTv7ItY8XljyypHP7cOLBev03hlULsmWZ++09ZcKDVsgds:jAEENIq8XwyVPQclDq/+WnpsSs

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:\\Users\\Admin\\AppData\\Roaming\\GoogleToolbar\\GoogleUpdate.exe"	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.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	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	GoogleUpdate.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe

Executes dropped EXE 1 IoCs

pid	Process
3632	GoogleUpdate.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\GoogleUpdate.exe = "C:\\Users\\Admin\\AppData\\Roaming\\GoogleToolbar\\GoogleUpdate.exe"	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.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	GoogleUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.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\Identifier	GoogleUpdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	GoogleUpdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	GoogleUpdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	GoogleUpdate.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	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	GoogleUpdate.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3632	GoogleUpdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeSecurityPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeTakeOwnershipPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeLoadDriverPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeSystemProfilePrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeSystemtimePrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeProfSingleProcessPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeIncBasePriorityPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeCreatePagefilePrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeBackupPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeRestorePrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeShutdownPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeDebugPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeSystemEnvironmentPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeChangeNotifyPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeRemoteShutdownPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeUndockPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeManageVolumePrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeImpersonatePrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeCreateGlobalPrivilege	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: 33	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: 34	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: 35	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: 36	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
Token: SeIncreaseQuotaPrivilege	3632	GoogleUpdate.exe
Token: SeSecurityPrivilege	3632	GoogleUpdate.exe
Token: SeTakeOwnershipPrivilege	3632	GoogleUpdate.exe
Token: SeLoadDriverPrivilege	3632	GoogleUpdate.exe
Token: SeSystemProfilePrivilege	3632	GoogleUpdate.exe
Token: SeSystemtimePrivilege	3632	GoogleUpdate.exe
Token: SeProfSingleProcessPrivilege	3632	GoogleUpdate.exe
Token: SeIncBasePriorityPrivilege	3632	GoogleUpdate.exe
Token: SeCreatePagefilePrivilege	3632	GoogleUpdate.exe
Token: SeBackupPrivilege	3632	GoogleUpdate.exe
Token: SeRestorePrivilege	3632	GoogleUpdate.exe
Token: SeShutdownPrivilege	3632	GoogleUpdate.exe
Token: SeDebugPrivilege	3632	GoogleUpdate.exe
Token: SeSystemEnvironmentPrivilege	3632	GoogleUpdate.exe
Token: SeChangeNotifyPrivilege	3632	GoogleUpdate.exe
Token: SeRemoteShutdownPrivilege	3632	GoogleUpdate.exe
Token: SeUndockPrivilege	3632	GoogleUpdate.exe
Token: SeManageVolumePrivilege	3632	GoogleUpdate.exe
Token: SeImpersonatePrivilege	3632	GoogleUpdate.exe
Token: SeCreateGlobalPrivilege	3632	GoogleUpdate.exe
Token: 33	3632	GoogleUpdate.exe
Token: 34	3632	GoogleUpdate.exe
Token: 35	3632	GoogleUpdate.exe
Token: 36	3632	GoogleUpdate.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 3632	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe	85
PID 4032 wrote to memory of 3632	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe	85
PID 4032 wrote to memory of 3632	4032	JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe	85

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_79eac94a1d157984f6ca5768777c697e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_79eac94a1d157984f6ca5768777c697e.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:4032
- C:\Users\Admin\AppData\Roaming\GoogleToolbar\GoogleUpdate.exe
  "C:\Users\Admin\AppData\Roaming\GoogleToolbar\GoogleUpdate.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
  PID:3632

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:\Users\Admin\AppData\Roaming\GoogleToolbar\GoogleUpdate.exe

Filesize
714KB

MD5
79eac94a1d157984f6ca5768777c697e

SHA1
3a65486b83aa4b0ed1193992de12bbe72deccbf1

SHA256
617add525b0fdbedbf2d16bc12d8457bd36eed0e547f145d99e4acacbf3a4d68

SHA512
00d7a6468cedbe158679df496a4fa5736cf6e41a6c297785f6f5a721e5b29ac3bb979e1626ab72affb31e3923a595d5861aa3ebd1eee1482a89ae20d379c7017

Download Submit
memory/3632-41-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-38-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-42-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-37-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-43-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-39-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-40-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-44-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-36-0x0000000002750000-0x0000000002751000-memory.dmp

Filesize
4KB

Download
memory/3632-50-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-49-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-45-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-46-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-47-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3632-48-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4032-0-0x0000000000710000-0x0000000000711000-memory.dmp

Filesize
4KB

Download
memory/4032-35-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads