darkcomet | 0bf70ab5b17a92c53e240220bc3fa94c6eb458e58945162fee94e9dff5743f72

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22/01/2025, 21:04

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General

Target

JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe
Size

1.8MB
MD5

11151b90950c8f395b37bb0e4f5090c8
SHA1

60c3df5aa401797f2a00baa430ec18fb59576c96
SHA256

0bf70ab5b17a92c53e240220bc3fa94c6eb458e58945162fee94e9dff5743f72
SHA512

d33fed3321946c100f51f77ec3efeb72db9845cf74bcfb0c992d7562213ad90ed1b4060b7801cd5bec3a8b6587cec7e5f5b50304001121629cbe20eb389addf3
SSDEEP

24576:Wk/aBSBEJMG7JwgD2NiG5n3vOLBrBm6F0ak/aBSBEJMG7JwgD2NiG5n3vOLBrBmf:hA/aLA/a

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 2 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:\\system32\\winlogon.exe"	winhost32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\system32\\winlogon.exe,C:\\system32\\winlogon.exe"	myFirstrat.exe.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	myFirstrat.exe.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winhost32.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	winhost32.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	myFirstrat.exe.exe

Executes dropped EXE 4 IoCs

pid	Process
4332	winhost32.exe
4780	myFirstrat.exe.exe
2080	winlogon.exe
4304	winlogon.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32\\winlogon.exe"	winhost32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32\\winlogon.exe"	myFirstrat.exe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\otZfrXolww = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\rundll32.exe\""	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4224 set thread context of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85

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 5 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	myFirstrat.exe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winhost32.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	myFirstrat.exe.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winhost32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winhost32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winhost32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winhost32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	myFirstrat.exe.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	myFirstrat.exe.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	myFirstrat.exe.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	winhost32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	myFirstrat.exe.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe
Token: SeIncreaseQuotaPrivilege	4332	winhost32.exe
Token: SeSecurityPrivilege	4332	winhost32.exe
Token: SeTakeOwnershipPrivilege	4332	winhost32.exe
Token: SeLoadDriverPrivilege	4332	winhost32.exe
Token: SeSystemProfilePrivilege	4332	winhost32.exe
Token: SeSystemtimePrivilege	4332	winhost32.exe
Token: SeProfSingleProcessPrivilege	4332	winhost32.exe
Token: SeIncBasePriorityPrivilege	4332	winhost32.exe
Token: SeCreatePagefilePrivilege	4332	winhost32.exe
Token: SeBackupPrivilege	4332	winhost32.exe
Token: SeRestorePrivilege	4332	winhost32.exe
Token: SeShutdownPrivilege	4332	winhost32.exe
Token: SeDebugPrivilege	4332	winhost32.exe
Token: SeSystemEnvironmentPrivilege	4332	winhost32.exe
Token: SeChangeNotifyPrivilege	4332	winhost32.exe
Token: SeRemoteShutdownPrivilege	4332	winhost32.exe
Token: SeUndockPrivilege	4332	winhost32.exe
Token: SeManageVolumePrivilege	4332	winhost32.exe
Token: SeImpersonatePrivilege	4332	winhost32.exe
Token: SeCreateGlobalPrivilege	4332	winhost32.exe
Token: 33	4332	winhost32.exe
Token: 34	4332	winhost32.exe
Token: 35	4332	winhost32.exe
Token: 36	4332	winhost32.exe
Token: SeIncreaseQuotaPrivilege	4780	myFirstrat.exe.exe
Token: SeSecurityPrivilege	4780	myFirstrat.exe.exe
Token: SeTakeOwnershipPrivilege	4780	myFirstrat.exe.exe
Token: SeLoadDriverPrivilege	4780	myFirstrat.exe.exe
Token: SeSystemProfilePrivilege	4780	myFirstrat.exe.exe
Token: SeSystemtimePrivilege	4780	myFirstrat.exe.exe
Token: SeProfSingleProcessPrivilege	4780	myFirstrat.exe.exe
Token: SeIncBasePriorityPrivilege	4780	myFirstrat.exe.exe
Token: SeCreatePagefilePrivilege	4780	myFirstrat.exe.exe
Token: SeBackupPrivilege	4780	myFirstrat.exe.exe
Token: SeRestorePrivilege	4780	myFirstrat.exe.exe
Token: SeShutdownPrivilege	4780	myFirstrat.exe.exe
Token: SeDebugPrivilege	4780	myFirstrat.exe.exe
Token: SeSystemEnvironmentPrivilege	4780	myFirstrat.exe.exe
Token: SeChangeNotifyPrivilege	4780	myFirstrat.exe.exe
Token: SeRemoteShutdownPrivilege	4780	myFirstrat.exe.exe
Token: SeUndockPrivilege	4780	myFirstrat.exe.exe
Token: SeManageVolumePrivilege	4780	myFirstrat.exe.exe
Token: SeImpersonatePrivilege	4780	myFirstrat.exe.exe
Token: SeCreateGlobalPrivilege	4780	myFirstrat.exe.exe
Token: 33	4780	myFirstrat.exe.exe
Token: 34	4780	myFirstrat.exe.exe
Token: 35	4780	myFirstrat.exe.exe
Token: 36	4780	myFirstrat.exe.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4332	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	85
PID 4224 wrote to memory of 4780	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	86
PID 4224 wrote to memory of 4780	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	86
PID 4224 wrote to memory of 4780	4224	JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe	86
PID 4332 wrote to memory of 1520	4332	winhost32.exe	87
PID 4332 wrote to memory of 1520	4332	winhost32.exe	87
PID 4332 wrote to memory of 1520	4332	winhost32.exe	87
PID 4332 wrote to memory of 2080	4332	winhost32.exe	88
PID 4332 wrote to memory of 2080	4332	winhost32.exe	88
PID 4332 wrote to memory of 2080	4332	winhost32.exe	88
PID 4780 wrote to memory of 5052	4780	myFirstrat.exe.exe	89
PID 4780 wrote to memory of 5052	4780	myFirstrat.exe.exe	89
PID 4780 wrote to memory of 5052	4780	myFirstrat.exe.exe	89
PID 4780 wrote to memory of 4304	4780	myFirstrat.exe.exe	90
PID 4780 wrote to memory of 4304	4780	myFirstrat.exe.exe	90
PID 4780 wrote to memory of 4304	4780	myFirstrat.exe.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_11151b90950c8f395b37bb0e4f5090c8.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Users\Admin\AppData\Local\Temp\winhost32.exe
  C:\Users\Admin\AppData\Local\Temp\\winhost32.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - Executes dropped EXE
  - 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:4332
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:1520
- - C:\system32\winlogon.exe
    "C:\system32\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2080
- C:\Users\Admin\AppData\Local\Temp\myFirstrat.exe.exe
  C:\Users\Admin\AppData\Local\Temp\myFirstrat.exe.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - Executes dropped EXE
  - 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:4780
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:5052
- - C:\system32\winlogon.exe
    "C:\system32\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4304

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\Local\Temp\myFirstrat.exe.exe

Filesize
667KB

MD5
a451942fc283b0b8c4088a44e0c54557

SHA1
e2c80c8c31081a9b1a70fce9b801d78c4d6ca546

SHA256
a96e022c1462f7e2ad621142ffe862e37383d92bd4ca3813cf9970b097cde244

SHA512
2929d0145e3aeef84ffd37c91f373ae6bb887d5ec1b67bbcfcbc95b24c72cfabed749d5d298920fd4b32c3f2fea3d3fa973d4b95387fc9742b22f4385e9d6d91

Download Submit
C:\Users\Admin\AppData\Local\Temp\winhost32.exe

Filesize
5KB

MD5
d2ed8fa3208e702b7d61728af768eed1

SHA1
54094aa272cb866a46c2ca5b56f4a094e0f48ffb

SHA256
9236208e312b2f47a0ef40e59fc0f364fc8e401717e1e46555c26bec8ab3de1f

SHA512
42442dc0b98f2abaea0c6516602d80df8a2a680278ecdc2b96fe5ce44685f7442347fd4ad13d9d99e0330cf0be7c0e9bbf22bd78c0173066221e430203c76313

Download Submit
memory/4224-0-0x00000000750F2000-0x00000000750F3000-memory.dmp

Filesize
4KB

Download
memory/4224-1-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/4224-2-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/4224-33-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/4332-9-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4332-11-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4332-5-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4332-18-0x00000000022F0000-0x00000000022F1000-memory.dmp

Filesize
4KB

Download
memory/4332-17-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4332-29-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4332-8-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4780-35-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads