darkcomet | 52b1e58da2cf00b22712b47009abad4d980646aa717deded73c20e4cd0b6fddb

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-11-2024 20:02

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General

Target

b34a37a8832702b570535d2cad426446_JaffaCakes118.exe
Size

659KB
MD5

b34a37a8832702b570535d2cad426446
SHA1

87a04118f782ff71dc0a0dfa5508a7c979112d24
SHA256

52b1e58da2cf00b22712b47009abad4d980646aa717deded73c20e4cd0b6fddb
SHA512

2c7884b8fae33fb0c3967e9b72667dbc0cf048f256d5d2e38fce5926a0fe9e549d387c5a44c6bae49618373c6f2ee81be7ea01d32138290bb10c355139e526a3
SSDEEP

12288:x9A2lAd0Z+89cxTlzO4AucTD8QP2lmSSrVovi/wK+:HAF6Zx9cxTVOrucTIESSpcqa

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:\\Windupdt\\winupdate.exe"	b34a37a8832702b570535d2cad426446_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	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2516 set thread context of 1832	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	31

System Location Discovery: System Language Discovery 1 TTPs 3 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	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
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	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	b34a37a8832702b570535d2cad426446_JaffaCakes118.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	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1832	explorer.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 2360	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	30
PID 2516 wrote to memory of 1832	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	31
PID 2516 wrote to memory of 1832	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	31
PID 2516 wrote to memory of 1832	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	31
PID 2516 wrote to memory of 1832	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	31
PID 2516 wrote to memory of 1832	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	31
PID 2516 wrote to memory of 1832	2516	b34a37a8832702b570535d2cad426446_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\b34a37a8832702b570535d2cad426446_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b34a37a8832702b570535d2cad426446_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:2360
- 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 SetWindowsHookEx
  PID:1832

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/1832-40-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/1832-37-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1832-45-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/1832-44-0x0000000000210000-0x0000000000211000-memory.dmp

Filesize
4KB

Download
memory/1832-43-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/1832-48-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/1832-46-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/1832-39-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/1832-47-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/1832-35-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/1832-41-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2360-33-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2360-2-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2516-0-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/2516-42-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads