darkcomet | db61bd472410903b376097458f82891f3b6fcb353b093827e97348a892fcb341

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-10-2024 20:06

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General

Target

5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Size

811KB
MD5

5e6cf7aa51299e6db6403309213f6259
SHA1

e7d6cb7da6462531324abf2ce1b4bf4a9adfb1a1
SHA256

db61bd472410903b376097458f82891f3b6fcb353b093827e97348a892fcb341
SHA512

e4f742161344e5c69b251cb6ae07643c77e2f8ee89c742b9493fb7ce9fbe939517f72e85a1e3fb02353bb330b68f47790fbc41f4b51c5deac05383800a9885de
SSDEEP

24576:eR7uE4BaEY2uWlEVZ8rrlRsX6JOY+Gmm+6:m7uPgTarelYNG

Score

10^/10

darkcomet discovery 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

Processes:

5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

msdcsc.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.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

Processes:

attrib.exeattrib.exe

pid	Process
1472	attrib.exe
5048	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

Processes:

5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
3204	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exemsdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

UPX packed file 18 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/728-0-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/files/0x000c000000023b4f-12.dat	upx
behavioral2/memory/728-22-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-23-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-24-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-25-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-26-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-27-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-28-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-29-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-30-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-31-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-32-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-33-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-34-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-35-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-36-0x0000000000400000-0x000000000086A000-memory.dmp	upx
behavioral2/memory/3204-37-0x0000000000400000-0x000000000086A000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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

Processes:

cmd.exeattrib.exeattrib.exeDllHost.exemsdcsc.exe5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

Processes:

5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeSecurityPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeSystemtimePrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeBackupPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeRestorePrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeShutdownPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeDebugPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeUndockPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeManageVolumePrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeImpersonatePrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: 33	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: 34	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: 35	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: 36	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3204	msdcsc.exe
Token: SeSecurityPrivilege	3204	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3204	msdcsc.exe
Token: SeLoadDriverPrivilege	3204	msdcsc.exe
Token: SeSystemProfilePrivilege	3204	msdcsc.exe
Token: SeSystemtimePrivilege	3204	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3204	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3204	msdcsc.exe
Token: SeCreatePagefilePrivilege	3204	msdcsc.exe
Token: SeBackupPrivilege	3204	msdcsc.exe
Token: SeRestorePrivilege	3204	msdcsc.exe
Token: SeShutdownPrivilege	3204	msdcsc.exe
Token: SeDebugPrivilege	3204	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3204	msdcsc.exe
Token: SeChangeNotifyPrivilege	3204	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3204	msdcsc.exe
Token: SeUndockPrivilege	3204	msdcsc.exe
Token: SeManageVolumePrivilege	3204	msdcsc.exe
Token: SeImpersonatePrivilege	3204	msdcsc.exe
Token: SeCreateGlobalPrivilege	3204	msdcsc.exe
Token: 33	3204	msdcsc.exe
Token: 34	3204	msdcsc.exe
Token: 35	3204	msdcsc.exe
Token: 36	3204	msdcsc.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid	Process
2872	DllHost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

msdcsc.exeDllHost.exe

pid	Process
3204	msdcsc.exe
2872	DllHost.exe
2872	DllHost.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.execmd.execmd.exe

description	pid	Process	procid_target
PID 728 wrote to memory of 2816	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	85
PID 728 wrote to memory of 2816	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	85
PID 728 wrote to memory of 2816	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	85
PID 728 wrote to memory of 1612	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	87
PID 728 wrote to memory of 1612	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	87
PID 728 wrote to memory of 1612	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	87
PID 2816 wrote to memory of 1472	2816	cmd.exe	89
PID 2816 wrote to memory of 1472	2816	cmd.exe	89
PID 2816 wrote to memory of 1472	2816	cmd.exe	89
PID 1612 wrote to memory of 5048	1612	cmd.exe	90
PID 1612 wrote to memory of 5048	1612	cmd.exe	90
PID 1612 wrote to memory of 5048	1612	cmd.exe	90
PID 728 wrote to memory of 3204	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	94
PID 728 wrote to memory of 3204	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	94
PID 728 wrote to memory of 3204	728	5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe	94

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
1472	attrib.exe
5048	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\5e6cf7aa51299e6db6403309213f6259_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1472
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:5048
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3204

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:2872

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CARDFRONT.TIF

Filesize
3.7MB

MD5
1bc57426c43fe1105e858945218b37fd

SHA1
f701c0a3de2d1f8a66d3e31117b99c5aa7db671a

SHA256
ef95a506190a36a71796e359c1050cbab0256fcf88109d7bbab765820708907a

SHA512
0053ed83e1aad55a3d967abac4f188f09e9621f4b6dde679e1987b9248c8bef71383f99b7c9e921c994bea457e019d61ad56073512f731fb5826053572d51e37

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
811KB

MD5
5e6cf7aa51299e6db6403309213f6259

SHA1
e7d6cb7da6462531324abf2ce1b4bf4a9adfb1a1

SHA256
db61bd472410903b376097458f82891f3b6fcb353b093827e97348a892fcb341

SHA512
e4f742161344e5c69b251cb6ae07643c77e2f8ee89c742b9493fb7ce9fbe939517f72e85a1e3fb02353bb330b68f47790fbc41f4b51c5deac05383800a9885de

Download Submit
memory/728-0-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/728-1-0x0000000000E80000-0x0000000000E81000-memory.dmp

Filesize
4KB

Download
memory/728-22-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-28-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-30-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-25-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-26-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-27-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-23-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-29-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-24-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-31-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-32-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-33-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-34-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-35-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-36-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3204-37-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download