darkcomet | 910eeeae2af17c6ee8009c60e79059f56b903703733937553384f7e772009177

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/03/2025, 08:43

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General

Target

JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Size

659KB
MD5

4605f0ccc8e9f079c50e5d89025f300e
SHA1

fe1a8a49fd6b2fc08ca8f69f8d21153f3606a7a2
SHA256

910eeeae2af17c6ee8009c60e79059f56b903703733937553384f7e772009177
SHA512

c4e0bd0a641cf42e4949b1fa98f8b8e86a1b3fd45942b75e63621e637992cf36824ef8278ce3b824f17987fb1d339458252b03bbf57bd05ceb716abc2061fc33
SSDEEP

12288:H9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKp:dAQ6Zx9cxTmOrucTIEFSpOGk

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

noo-ip.no-ip.biz:1604

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
winupdate.exe
gencode
h-*ti+verQk2
install
true
offline_keylogger
false
persistence
false

rc4.plain

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:\\Windows\\system32\\winupdate.exe"	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.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	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.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\ = "C:\\Windows\\system32\\winupdate.exe"	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\system32\\winupdate.exe"	notepad.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\winupdate.exe	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
File opened for modification	C:\Windows\SysWOW64\winupdate.exe	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
File opened for modification	C:\Windows\SysWOW64\	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
File opened for modification	C:\Windows\SysWOW64\winupdate.exe	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1860 set thread context of 2780	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	29

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	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	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	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeSecurityPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeTakeOwnershipPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeLoadDriverPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeSystemProfilePrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeSystemtimePrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeProfSingleProcessPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeIncBasePriorityPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeCreatePagefilePrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeBackupPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeRestorePrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeShutdownPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeDebugPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeSystemEnvironmentPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeChangeNotifyPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeRemoteShutdownPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeUndockPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeManageVolumePrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeImpersonatePrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeCreateGlobalPrivilege	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: 33	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: 34	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: 35	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
Token: SeIncreaseQuotaPrivilege	2780	explorer.exe
Token: SeSecurityPrivilege	2780	explorer.exe
Token: SeTakeOwnershipPrivilege	2780	explorer.exe
Token: SeLoadDriverPrivilege	2780	explorer.exe
Token: SeSystemProfilePrivilege	2780	explorer.exe
Token: SeSystemtimePrivilege	2780	explorer.exe
Token: SeProfSingleProcessPrivilege	2780	explorer.exe
Token: SeIncBasePriorityPrivilege	2780	explorer.exe
Token: SeCreatePagefilePrivilege	2780	explorer.exe
Token: SeBackupPrivilege	2780	explorer.exe
Token: SeRestorePrivilege	2780	explorer.exe
Token: SeShutdownPrivilege	2780	explorer.exe
Token: SeDebugPrivilege	2780	explorer.exe
Token: SeSystemEnvironmentPrivilege	2780	explorer.exe
Token: SeChangeNotifyPrivilege	2780	explorer.exe
Token: SeRemoteShutdownPrivilege	2780	explorer.exe
Token: SeUndockPrivilege	2780	explorer.exe
Token: SeManageVolumePrivilege	2780	explorer.exe
Token: SeImpersonatePrivilege	2780	explorer.exe
Token: SeCreateGlobalPrivilege	2780	explorer.exe
Token: 33	2780	explorer.exe
Token: 34	2780	explorer.exe
Token: 35	2780	explorer.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 3020	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	28
PID 1860 wrote to memory of 2780	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	29
PID 1860 wrote to memory of 2780	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	29
PID 1860 wrote to memory of 2780	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	29
PID 1860 wrote to memory of 2780	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	29
PID 1860 wrote to memory of 2780	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	29
PID 1860 wrote to memory of 2780	1860	JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe	29

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4605f0ccc8e9f079c50e5d89025f300e.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:1860
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:3020
- 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:2780

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:\Windows\SysWOW64\winupdate.exe

Filesize
659KB

MD5
4605f0ccc8e9f079c50e5d89025f300e

SHA1
fe1a8a49fd6b2fc08ca8f69f8d21153f3606a7a2

SHA256
910eeeae2af17c6ee8009c60e79059f56b903703733937553384f7e772009177

SHA512
c4e0bd0a641cf42e4949b1fa98f8b8e86a1b3fd45942b75e63621e637992cf36824ef8278ce3b824f17987fb1d339458252b03bbf57bd05ceb716abc2061fc33

Download Submit
memory/1860-0-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1860-38-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2780-36-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2780-35-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2780-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2780-39-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2780-37-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2780-31-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2780-43-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/2780-45-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2780-44-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/2780-46-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download
memory/3020-29-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/3020-2-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads