darkcomet | dee69a71f6f440094d59ca2900c4f1e6b56bb668f6dcc58cbdbc804d375e4b2d

Analysis

max time kernel
149s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
16/07/2024, 03:41

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Size 278KB
Sample240716-d8tncstclm
SHA256 dee69a71f6f440094d59ca2900c4f1e6b56bb668f6dcc58cbdbc804d375e4b2d
MD5 4cab6a2814297fd82dcf8873c7731e3b
SHA1 a620e2b7e2faa5f2aee03c63673b6c78be698c43
SHA512 92e773568ef5966a205f0022ecc32f42041c2e3244f16efb14eb4ad97639aea8d0b855e7836ff8c181b4ad98de9af07e2023394c34386a304aa783b825ba97d9
SSDEEP 6144:NMggLtESuJX3gdQNldDERAynCvbuK4oOAh2kPk5xIZIWEB5/ao:NMjLtExVeQNlpKAgqOe2kWNLFV
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet evasion persistence rat trojan upx

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:\\Users\\Admin\\Documents\\Windupdt\\winupdate.exe"	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3152	attrib.exe
1528	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-464762018-485119342-1613148473-1000\Control Panel\International\Geo\Nation	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2144	winupdate.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1020-0-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
behavioral2/files/0x000800000002348f-6.dat	upx
behavioral2/memory/2144-36-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
behavioral2/memory/1020-38-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
behavioral2/memory/2144-39-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
behavioral2/memory/2144-41-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
behavioral2/memory/2144-47-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
behavioral2/memory/2144-49-0x0000000000400000-0x00000000004C9000-memory.dmp	upx

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-1-5-21-464762018-485119342-1613148473-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\Documents\\Windupdt\\winupdate.exe"	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-464762018-485119342-1613148473-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\Documents\\Windupdt\\winupdate.exe"	winupdate.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
320	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2144	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeSecurityPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeBackupPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeRestorePrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeShutdownPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeDebugPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeUndockPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: 33	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: 34	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: 35	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: 36	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2144	winupdate.exe
Token: SeSecurityPrivilege	2144	winupdate.exe
Token: SeTakeOwnershipPrivilege	2144	winupdate.exe
Token: SeLoadDriverPrivilege	2144	winupdate.exe
Token: SeSystemProfilePrivilege	2144	winupdate.exe
Token: SeSystemtimePrivilege	2144	winupdate.exe
Token: SeProfSingleProcessPrivilege	2144	winupdate.exe
Token: SeIncBasePriorityPrivilege	2144	winupdate.exe
Token: SeCreatePagefilePrivilege	2144	winupdate.exe
Token: SeBackupPrivilege	2144	winupdate.exe
Token: SeRestorePrivilege	2144	winupdate.exe
Token: SeShutdownPrivilege	2144	winupdate.exe
Token: SeDebugPrivilege	2144	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2144	winupdate.exe
Token: SeChangeNotifyPrivilege	2144	winupdate.exe
Token: SeRemoteShutdownPrivilege	2144	winupdate.exe
Token: SeUndockPrivilege	2144	winupdate.exe
Token: SeManageVolumePrivilege	2144	winupdate.exe
Token: SeImpersonatePrivilege	2144	winupdate.exe
Token: SeCreateGlobalPrivilege	2144	winupdate.exe
Token: 33	2144	winupdate.exe
Token: 34	2144	winupdate.exe
Token: 35	2144	winupdate.exe
Token: 36	2144	winupdate.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 3668	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	84
PID 1020 wrote to memory of 3668	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	84
PID 1020 wrote to memory of 3668	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	84
PID 1020 wrote to memory of 4856	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	86
PID 1020 wrote to memory of 4856	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	86
PID 1020 wrote to memory of 4856	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	86
PID 1020 wrote to memory of 2996	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	88
PID 1020 wrote to memory of 2996	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	88
PID 1020 wrote to memory of 2996	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	88
PID 4856 wrote to memory of 1528	4856	cmd.exe	90
PID 4856 wrote to memory of 1528	4856	cmd.exe	90
PID 4856 wrote to memory of 1528	4856	cmd.exe	90
PID 3668 wrote to memory of 3152	3668	cmd.exe	91
PID 3668 wrote to memory of 3152	3668	cmd.exe	91
PID 3668 wrote to memory of 3152	3668	cmd.exe	91
PID 2996 wrote to memory of 320	2996	cmd.exe	92
PID 2996 wrote to memory of 320	2996	cmd.exe	92
PID 2996 wrote to memory of 320	2996	cmd.exe	92
PID 1020 wrote to memory of 2144	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	93
PID 1020 wrote to memory of 2144	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	93
PID 1020 wrote to memory of 2144	1020	4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe	93

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3152	attrib.exe
1528	attrib.exe

C:\Users\Admin\AppData\Local\Temp\4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:3152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4856
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5&del "C:\Users\Admin\AppData\Local\Temp\4cab6a2814297fd82dcf8873c7731e3b_JaffaCakes118.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 5
    3⤵
    - Runs ping.exe
    PID:320
- C:\Users\Admin\Documents\Windupdt\winupdate.exe
  "C:\Users\Admin\Documents\Windupdt\winupdate.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:2144

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

winupdate.exe

Path C:\Users\Admin\Documents\Windupdt\winupdate.exe
Size 278KB
SHA256 dee69a71f6f440094d59ca2900c4f1e6b56bb668f6dcc58cbdbc804d375e4b2d
MD5 4cab6a2814297fd82dcf8873c7731e3b
SHA1 a620e2b7e2faa5f2aee03c63673b6c78be698c43
SHA512 92e773568ef5966a205f0022ecc32f42041c2e3244f16efb14eb4ad97639aea8d0b855e7836ff8c181b4ad98de9af07e2023394c34386a304aa783b825ba97d9
SSDEEP 6144:NMggLtESuJX3gdQNldDERAynCvbuK4oOAh2kPk5xIZIWEB5/ao:NMjLtExVeQNlpKAgqOe2kWNLFV
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1020-0-0x0000000000400000-0x00000000004C9000-memory.dmp

Download

memory/1020-1-0x0000000002150000-0x0000000002151000-memory.dmp

Download

memory/1020-38-0x0000000000400000-0x00000000004C9000-memory.dmp

Download

memory/2144-36-0x0000000000400000-0x00000000004C9000-memory.dmp

Download

memory/2144-39-0x0000000000400000-0x00000000004C9000-memory.dmp

Download

memory/2144-41-0x0000000000400000-0x00000000004C9000-memory.dmp

Download

memory/2144-47-0x0000000000400000-0x00000000004C9000-memory.dmp

Download

memory/2144-49-0x0000000000400000-0x00000000004C9000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads