darkcomet | 6f94b4cbd37916ca679dbbac53afffc691c6dd5330245b593cdb8302b2a1c31b

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
17-10-2024 00:17

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General

Target

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Size

728KB
MD5

4fd155e00d4bc07b165c02bdcc4c3522
SHA1

519f3a5cf6e61a1a3dc372b2c8a865719440c463
SHA256

6f94b4cbd37916ca679dbbac53afffc691c6dd5330245b593cdb8302b2a1c31b
SHA512

eb09cb1a4c6b5ec5fe12c5d92a12c3f86a46434579d3d4750681a6cf8f626e196de71f8a4356392cd75ad3ce1009faaa694b9883c759d3ec2c1effec812f2279
SSDEEP

12288:5GhEc9biObcDEMUkuBjnauDJe0KIPbx2toHHzS0MS0misSORycGRV:5FcMObcDEYUreKPbxJe0MS0misS+ycGf

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:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe

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\\winupdate.exe"	4fd155e00d4bc07b165c02bdcc4c3522_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:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	4fd155e00d4bc07b165c02bdcc4c3522_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

Processes:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

winupdate.exewinupdate.exe

pid	Process
1472	winupdate.exe
5084	winupdate.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\winupdate.exe"	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exewinupdate.exe

description	pid	Process	procid_target
PID 4536 set thread context of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 1472 set thread context of 5084	1472	winupdate.exe	89

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 4 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:

winupdate.exewinupdate.exe4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.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:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
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

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exewinupdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeSecurityPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeBackupPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeRestorePrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeShutdownPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeDebugPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeUndockPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: 33	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: 34	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: 35	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: 36	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5084	winupdate.exe
Token: SeSecurityPrivilege	5084	winupdate.exe
Token: SeTakeOwnershipPrivilege	5084	winupdate.exe
Token: SeLoadDriverPrivilege	5084	winupdate.exe
Token: SeSystemProfilePrivilege	5084	winupdate.exe
Token: SeSystemtimePrivilege	5084	winupdate.exe
Token: SeProfSingleProcessPrivilege	5084	winupdate.exe
Token: SeIncBasePriorityPrivilege	5084	winupdate.exe
Token: SeCreatePagefilePrivilege	5084	winupdate.exe
Token: SeBackupPrivilege	5084	winupdate.exe
Token: SeRestorePrivilege	5084	winupdate.exe
Token: SeShutdownPrivilege	5084	winupdate.exe
Token: SeDebugPrivilege	5084	winupdate.exe
Token: SeSystemEnvironmentPrivilege	5084	winupdate.exe
Token: SeChangeNotifyPrivilege	5084	winupdate.exe
Token: SeRemoteShutdownPrivilege	5084	winupdate.exe
Token: SeUndockPrivilege	5084	winupdate.exe
Token: SeManageVolumePrivilege	5084	winupdate.exe
Token: SeImpersonatePrivilege	5084	winupdate.exe
Token: SeCreateGlobalPrivilege	5084	winupdate.exe
Token: 33	5084	winupdate.exe
Token: 34	5084	winupdate.exe
Token: 35	5084	winupdate.exe
Token: 36	5084	winupdate.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exewinupdate.exe

description	pid	Process	procid_target
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4536 wrote to memory of 4568	4536	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	87
PID 4568 wrote to memory of 1472	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	88
PID 4568 wrote to memory of 1472	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	88
PID 4568 wrote to memory of 1472	4568	4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe	88
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89
PID 1472 wrote to memory of 5084	1472	winupdate.exe	89

C:\Users\Admin\AppData\Local\Temp\4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Users\Admin\AppData\Local\Temp\4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\4fd155e00d4bc07b165c02bdcc4c3522_JaffaCakes118.exe
  2⤵
  - 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
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4568
- - C:\Users\Admin\AppData\Roaming\winupdate.exe
    "C:\Users\Admin\AppData\Roaming\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1472
  - - C:\Users\Admin\AppData\Roaming\winupdate.exe
      C:\Users\Admin\AppData\Roaming\winupdate.exe
      4⤵
      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 use of AdjustPrivilegeToken
      PID:5084

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:\Users\Admin\AppData\Roaming\winupdate.exe

Filesize
728KB

MD5
4fd155e00d4bc07b165c02bdcc4c3522

SHA1
519f3a5cf6e61a1a3dc372b2c8a865719440c463

SHA256
6f94b4cbd37916ca679dbbac53afffc691c6dd5330245b593cdb8302b2a1c31b

SHA512
eb09cb1a4c6b5ec5fe12c5d92a12c3f86a46434579d3d4750681a6cf8f626e196de71f8a4356392cd75ad3ce1009faaa694b9883c759d3ec2c1effec812f2279

Download Submit
memory/1472-24-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/4536-0-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/4536-5-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/4568-2-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4568-1-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4568-3-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4568-4-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4568-6-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4568-7-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4568-16-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-29-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-35-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-27-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-26-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-30-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-23-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-28-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-31-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-32-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-33-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-34-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-25-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-36-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-37-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-38-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-39-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-40-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-41-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-42-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-43-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-44-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/5084-45-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download