darkcomet | d7a32e00a4a2895785e3b0cfcdd6c161bb2c40f4926ac3d6eafa1d01ae4ca134

Analysis

max time kernel
140s
max time network
121s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
05-12-2024 00:04

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General

Target

c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Size

660KB
MD5

c4f2da47d8992ed91bc2e9f844b4a632
SHA1

4bd7ce7fc9f1430faebb75c8bccb94336c6feb29
SHA256

d7a32e00a4a2895785e3b0cfcdd6c161bb2c40f4926ac3d6eafa1d01ae4ca134
SHA512

94eb408a24e28c833a67507afdf1784f8a5d171d9787abc46faa07b7c4fb74c73f6694b7223e093a0c17ccff4d839927f1a52672bbe919b07b9a9b4b3e75d7d4
SSDEEP

12288:x9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKPF:HAQ6Zx9cxTmOrucTIEFSpOGg

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:\\Windows\\winupdate.exe"	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 1 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	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\winupdate.exe"	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\winupdate.exe"	notepad.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\winupdate.exe	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
File opened for modification	C:\Windows\winupdate.exe	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
File opened for modification	C:\Windows\winupdate.exe	notepad.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1984	2592	WerFault.exe	29

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	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Checks processor information in registry 2 TTPs 4 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	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeSecurityPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeBackupPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeRestorePrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeShutdownPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeDebugPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeUndockPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: 33	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: 34	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
Token: 35	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 2564	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	30
PID 2592 wrote to memory of 1984	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	31
PID 2592 wrote to memory of 1984	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	31
PID 2592 wrote to memory of 1984	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	31
PID 2592 wrote to memory of 1984	2592	c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c4f2da47d8992ed91bc2e9f844b4a632_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Drops file in Windows directory
- 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:2592
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2592 -s 452
  2⤵
  - Program crash
  PID:1984

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\winupdate.exe

Filesize
660KB

MD5
c4f2da47d8992ed91bc2e9f844b4a632

SHA1
4bd7ce7fc9f1430faebb75c8bccb94336c6feb29

SHA256
d7a32e00a4a2895785e3b0cfcdd6c161bb2c40f4926ac3d6eafa1d01ae4ca134

SHA512
94eb408a24e28c833a67507afdf1784f8a5d171d9787abc46faa07b7c4fb74c73f6694b7223e093a0c17ccff4d839927f1a52672bbe919b07b9a9b4b3e75d7d4

Download Submit
memory/2564-28-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/2564-2-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2592-0-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2592-32-0x0000000013140000-0x00000000131F7000-memory.dmp

Filesize
732KB

Download
memory/2592-33-0x0000000013140000-0x00000000131F7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads