Malware Analysis Report

2024-10-23 20:08

Sample ID 240802-dtfsysxfkd
Target 82d70437c1f62160cd4285876fbb37ff_JaffaCakes118
SHA256 a3cad1520518d81cc9fa70b22a836f50f639dbb8596e21ed70136158e8d47701
Tags
darkcomet guest16 discovery persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a3cad1520518d81cc9fa70b22a836f50f639dbb8596e21ed70136158e8d47701

Threat Level: Known bad

The file 82d70437c1f62160cd4285876fbb37ff_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet guest16 discovery persistence rat trojan

Modifies WinLogon for persistence

Darkcomet

Loads dropped DLL

Executes dropped EXE

Adds Run key to start application

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-02 03:17

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-02 03:17

Reported

2024-08-02 03:20

Platform

win10v2004-20240730-en

Max time kernel

141s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Favorites\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Favorites\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/656-0-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/656-1-0x0000000000630000-0x0000000000631000-memory.dmp

C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe

MD5 82d70437c1f62160cd4285876fbb37ff
SHA1 7359a23f907c57415041b294e67b68d00bc6a129
SHA256 a3cad1520518d81cc9fa70b22a836f50f639dbb8596e21ed70136158e8d47701
SHA512 98b46781f2adb890ab31b442c755e445fbaeac50dd7ad4e80fa9b344e5af500b8788d4db40d4e5af3fcf1b96f9dd67873bf68cf026fb3b131d4d083a458318b5

memory/656-8-0x0000000000400000-0x00000000004D5150-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-02 03:17

Reported

2024-08-02 03:20

Platform

win7-20240705-en

Max time kernel

150s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Favorites\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Favorites\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: 33 N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: 34 N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A
Token: 35 N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\82d70437c1f62160cd4285876fbb37ff_JaffaCakes118.exe"

C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe

"C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 brhoom1406.no-ip.org udp

Files

memory/2108-0-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2108-1-0x00000000004F0000-0x00000000004F1000-memory.dmp

C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe

MD5 82d70437c1f62160cd4285876fbb37ff
SHA1 7359a23f907c57415041b294e67b68d00bc6a129
SHA256 a3cad1520518d81cc9fa70b22a836f50f639dbb8596e21ed70136158e8d47701
SHA512 98b46781f2adb890ab31b442c755e445fbaeac50dd7ad4e80fa9b344e5af500b8788d4db40d4e5af3fcf1b96f9dd67873bf68cf026fb3b131d4d083a458318b5

memory/2108-13-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-14-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-15-0x0000000000290000-0x0000000000291000-memory.dmp

memory/2776-16-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-17-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-18-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-19-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-20-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-21-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-22-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-23-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-24-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-25-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-26-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-27-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-28-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-29-0x0000000000400000-0x00000000004D5150-memory.dmp

memory/2776-30-0x0000000000400000-0x00000000004D5150-memory.dmp