darkcomet | 1679a02cd35168d0784c978c37e543fee035d5a0b8976b0b58d9d8674f1ae75f

Analysis

max time kernel
158s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19-04-2024 02:05

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General

Target

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Size

816KB
MD5

f94475e37a9cb16fee30ef48e7c35770
SHA1

0f8dbfcee390a49476fc9445d80c3c7c2a4175c7
SHA256

1679a02cd35168d0784c978c37e543fee035d5a0b8976b0b58d9d8674f1ae75f
SHA512

44e155a05a8c9ddbca1cb963369ff2248c9f6e0aa66b3879bd030a7a580bc6ed83b2c75772879e02a68b1fb092cce63007a4ec57703f9643fed421de1f87f977
SSDEEP

12288:z9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9L3+l:xAQ6Zx9cxTmOrucTIEFSpOr

Score

10^/10

darkcomet 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

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	f94475e37a9cb16fee30ef48e7c35770_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

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exeexplorer.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	f94475e37a9cb16fee30ef48e7c35770_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

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exenotepad.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2328 set thread context of 2424	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	29

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exeexplorer.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.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
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	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exeexplorer.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

explorer.exe

pid	Process
2424	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exeexplorer.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeSecurityPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeBackupPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeRestorePrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeShutdownPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeDebugPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeUndockPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: 33	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: 34	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: 35	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2424	explorer.exe
Token: SeSecurityPrivilege	2424	explorer.exe
Token: SeTakeOwnershipPrivilege	2424	explorer.exe
Token: SeLoadDriverPrivilege	2424	explorer.exe
Token: SeSystemProfilePrivilege	2424	explorer.exe
Token: SeSystemtimePrivilege	2424	explorer.exe
Token: SeProfSingleProcessPrivilege	2424	explorer.exe
Token: SeIncBasePriorityPrivilege	2424	explorer.exe
Token: SeCreatePagefilePrivilege	2424	explorer.exe
Token: SeBackupPrivilege	2424	explorer.exe
Token: SeRestorePrivilege	2424	explorer.exe
Token: SeShutdownPrivilege	2424	explorer.exe
Token: SeDebugPrivilege	2424	explorer.exe
Token: SeSystemEnvironmentPrivilege	2424	explorer.exe
Token: SeChangeNotifyPrivilege	2424	explorer.exe
Token: SeRemoteShutdownPrivilege	2424	explorer.exe
Token: SeUndockPrivilege	2424	explorer.exe
Token: SeManageVolumePrivilege	2424	explorer.exe
Token: SeImpersonatePrivilege	2424	explorer.exe
Token: SeCreateGlobalPrivilege	2424	explorer.exe
Token: 33	2424	explorer.exe
Token: 34	2424	explorer.exe
Token: 35	2424	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid	Process
2424	explorer.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2160	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	28
PID 2328 wrote to memory of 2424	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	29
PID 2328 wrote to memory of 2424	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	29
PID 2328 wrote to memory of 2424	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	29
PID 2328 wrote to memory of 2424	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	29
PID 2328 wrote to memory of 2424	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	29
PID 2328 wrote to memory of 2424	2328	f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe	29

C:\Users\Admin\AppData\Local\Temp\f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f94475e37a9cb16fee30ef48e7c35770_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  PID:2160
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2424

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe

Filesize
816KB

MD5
9c4c357dfc32d42c99d9996fada822ed

SHA1
654281cbcbb211c0e9f9466f4d8efe88e709ebf3

SHA256
5a39d241404c38f87841d09d74c6cc0a12300888bcd1b81f7c767b917fc09fa1

SHA512
7c37f839c37fb6c1755eeca9be52a329cd07624c3db4942bddb12f91932b20a36234ef2216ed2640dbb84e215dfc2a6d4495ef2bcc2e02fbe882b0f872afc0dd

Download Submit
C:\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe

Filesize
816KB

MD5
f94475e37a9cb16fee30ef48e7c35770

SHA1
0f8dbfcee390a49476fc9445d80c3c7c2a4175c7

SHA256
1679a02cd35168d0784c978c37e543fee035d5a0b8976b0b58d9d8674f1ae75f

SHA512
44e155a05a8c9ddbca1cb963369ff2248c9f6e0aa66b3879bd030a7a580bc6ed83b2c75772879e02a68b1fb092cce63007a4ec57703f9643fed421de1f87f977

Download Submit
memory/2160-3-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2160-37-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download
memory/2328-48-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2328-1-0x0000000000570000-0x0000000000571000-memory.dmp

Filesize
4KB

Download
memory/2328-0-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2424-43-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2424-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2424-50-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2424-51-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2424-52-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/2424-53-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2424-54-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2424-55-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2424-56-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download
memory/2424-57-0x0000000013140000-0x000000001320C000-memory.dmp

Filesize
816KB

Download