darkcomet | 5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14f

Analysis

max time kernel
120s
max time network
120s
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, 01:28

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General

Target

5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Size

1.0MB
MD5

abf0288d96a6ef61c896230b2fedd3c0
SHA1

8f3b0aa3cbb2e5ab7bbdf64cef7444a623de161f
SHA256

5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14f
SHA512

94379a060a8df9ab6fc024015f283cc05e62aa4677a3714008e9cdfd2b19cf05fe37f7e4770ce36f7ecbd7dce31a207695feee0b748728f95e5137f6a8c32d3c
SSDEEP

24576:Rx7UJ81apKbDL+3DdVrBta0ShvVboU4TIn9ohOCMXE0QxbD/dlwc4Z99rpLMO38t:DV1apKbDL+3DdVrBta0ShvVboU4TIn9g

Score

10^/10

darkcomet discovery persistence rat trojan upx

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\\Windupdt\\winupdate.exe"	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.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	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe

Executes dropped EXE 2 IoCs

pid	Process
2272	winupdate.exe
4056	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:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1388 set thread context of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 2272 set thread context of 4056	2272	winupdate.exe	86

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1388-0-0x0000000000400000-0x0000000000512000-memory.dmp	upx
behavioral2/memory/1388-6-0x0000000000400000-0x0000000000512000-memory.dmp	upx
behavioral2/files/0x000a000000023b97-14.dat	upx
behavioral2/memory/2272-79-0x0000000000400000-0x0000000000512000-memory.dmp	upx

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.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\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.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

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	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.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\	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeSecurityPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeTakeOwnershipPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeLoadDriverPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeSystemProfilePrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeSystemtimePrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeProfSingleProcessPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeIncBasePriorityPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeCreatePagefilePrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeBackupPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeRestorePrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeShutdownPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeDebugPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeSystemEnvironmentPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeChangeNotifyPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeRemoteShutdownPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeUndockPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeManageVolumePrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeImpersonatePrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeCreateGlobalPrivilege	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: 33	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: 34	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: 35	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: 36	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
Token: SeIncreaseQuotaPrivilege	4056	winupdate.exe
Token: SeSecurityPrivilege	4056	winupdate.exe
Token: SeTakeOwnershipPrivilege	4056	winupdate.exe
Token: SeLoadDriverPrivilege	4056	winupdate.exe
Token: SeSystemProfilePrivilege	4056	winupdate.exe
Token: SeSystemtimePrivilege	4056	winupdate.exe
Token: SeProfSingleProcessPrivilege	4056	winupdate.exe
Token: SeIncBasePriorityPrivilege	4056	winupdate.exe
Token: SeCreatePagefilePrivilege	4056	winupdate.exe
Token: SeBackupPrivilege	4056	winupdate.exe
Token: SeRestorePrivilege	4056	winupdate.exe
Token: SeShutdownPrivilege	4056	winupdate.exe
Token: SeDebugPrivilege	4056	winupdate.exe
Token: SeSystemEnvironmentPrivilege	4056	winupdate.exe
Token: SeChangeNotifyPrivilege	4056	winupdate.exe
Token: SeRemoteShutdownPrivilege	4056	winupdate.exe
Token: SeUndockPrivilege	4056	winupdate.exe
Token: SeManageVolumePrivilege	4056	winupdate.exe
Token: SeImpersonatePrivilege	4056	winupdate.exe
Token: SeCreateGlobalPrivilege	4056	winupdate.exe
Token: 33	4056	winupdate.exe
Token: 34	4056	winupdate.exe
Token: 35	4056	winupdate.exe
Token: 36	4056	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
2272	winupdate.exe
4056	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 1388 wrote to memory of 3468	1388	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	84
PID 3468 wrote to memory of 2272	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	85
PID 3468 wrote to memory of 2272	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	85
PID 3468 wrote to memory of 2272	3468	5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe	85
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86
PID 2272 wrote to memory of 4056	2272	winupdate.exe	86

C:\Users\Admin\AppData\Local\Temp\5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
"C:\Users\Admin\AppData\Local\Temp\5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Users\Admin\AppData\Local\Temp\5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.exe
  "C:\Users\Admin\AppData\Local\Temp\5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14fN.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
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3468
- - C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
    "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2272
  - - C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
      "C:\Users\Admin\AppData\Roaming\Windupdt\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
      Suspicious use of SetWindowsHookEx
      PID:4056

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\Windupdt\winupdate.exe

Filesize
1.0MB

MD5
abf0288d96a6ef61c896230b2fedd3c0

SHA1
8f3b0aa3cbb2e5ab7bbdf64cef7444a623de161f

SHA256
5e61953db8384267353670cf53fc6f38729b97446fcb08c8be68b73a98c1f14f

SHA512
94379a060a8df9ab6fc024015f283cc05e62aa4677a3714008e9cdfd2b19cf05fe37f7e4770ce36f7ecbd7dce31a207695feee0b748728f95e5137f6a8c32d3c

Download Submit
memory/1388-6-0x0000000000400000-0x0000000000512000-memory.dmp

Filesize
1.1MB

Download
memory/1388-0-0x0000000000400000-0x0000000000512000-memory.dmp

Filesize
1.1MB

Download
memory/2272-79-0x0000000000400000-0x0000000000512000-memory.dmp

Filesize
1.1MB

Download
memory/3468-3-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3468-4-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3468-5-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3468-7-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3468-8-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3468-9-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/3468-69-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-83-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-88-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-81-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-78-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-84-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-82-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-85-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-86-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-87-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-80-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-89-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-90-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-91-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-92-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-93-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-94-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-95-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-96-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/4056-97-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads