darkcomet | 4f31add14bedd14e61273d595800009c3734abf255cebfdb4aeee7f5f0de9995

Analysis

max time kernel
149s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
11-08-2024 15:25

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General

Target

8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Size

617KB
MD5

8ae604c95a1954b070729d8321c3a00d
SHA1

9c90fa460cc5f48ceedbe0ec6c8d3a004b476f66
SHA256

4f31add14bedd14e61273d595800009c3734abf255cebfdb4aeee7f5f0de9995
SHA512

618197aa89a3af21324d62382690ba6b03b8b27f39d55bf30bf3721e59ae7baa63e1bbbd4460c67317b4369442114adf53223ca025f6a7e6952c73ed2da493dc
SSDEEP

12288:1pwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIX:HwAcu99lPzvxP+Bsz2XjWTRMQckkIX

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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\Windupdt\\winupdate.exe"	8ae604c95a1954b070729d8321c3a00d_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	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.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-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\winupdate.exe	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 588 set thread context of 2784	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe	30

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	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8ae604c95a1954b070729d8321c3a00d_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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.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	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeSecurityPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeSystemtimePrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeBackupPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeRestorePrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeShutdownPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeDebugPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeUndockPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeManageVolumePrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeImpersonatePrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: 33	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: 34	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: 35	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2784	explorer.exe
Token: SeSecurityPrivilege	2784	explorer.exe
Token: SeTakeOwnershipPrivilege	2784	explorer.exe
Token: SeLoadDriverPrivilege	2784	explorer.exe
Token: SeSystemProfilePrivilege	2784	explorer.exe
Token: SeSystemtimePrivilege	2784	explorer.exe
Token: SeProfSingleProcessPrivilege	2784	explorer.exe
Token: SeIncBasePriorityPrivilege	2784	explorer.exe
Token: SeCreatePagefilePrivilege	2784	explorer.exe
Token: SeBackupPrivilege	2784	explorer.exe
Token: SeRestorePrivilege	2784	explorer.exe
Token: SeShutdownPrivilege	2784	explorer.exe
Token: SeDebugPrivilege	2784	explorer.exe
Token: SeSystemEnvironmentPrivilege	2784	explorer.exe
Token: SeChangeNotifyPrivilege	2784	explorer.exe
Token: SeRemoteShutdownPrivilege	2784	explorer.exe
Token: SeUndockPrivilege	2784	explorer.exe
Token: SeManageVolumePrivilege	2784	explorer.exe
Token: SeImpersonatePrivilege	2784	explorer.exe
Token: SeCreateGlobalPrivilege	2784	explorer.exe
Token: 33	2784	explorer.exe
Token: 34	2784	explorer.exe
Token: 35	2784	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 588 wrote to memory of 2784	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe	30
PID 588 wrote to memory of 2784	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe	30
PID 588 wrote to memory of 2784	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe	30
PID 588 wrote to memory of 2784	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe	30
PID 588 wrote to memory of 2784	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe	30
PID 588 wrote to memory of 2784	588	8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8ae604c95a1954b070729d8321c3a00d_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- 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:588
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2784

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

memory/588-10-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/588-1-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/588-0-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2784-8-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-9-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-4-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-11-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-12-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-14-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/2784-13-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-16-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-15-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/2784-17-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads