Malware Analysis Report

2024-08-06 17:17

Sample ID 240620-whtjsazfjd
Target 0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118
SHA256 dc7aed44048b31cab605e96936140d6e1a7c37a41a746246a5b9a151a4b52ad1
Tags
darkcomet guest16 persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

dc7aed44048b31cab605e96936140d6e1a7c37a41a746246a5b9a151a4b52ad1

Threat Level: Known bad

The file 0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet guest16 persistence rat trojan

Darkcomet

Modifies WinLogon for persistence

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

Program crash

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Winlogon Helper DLL
T1547.004
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Winlogon Helper DLL
T1547.004
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-20 17:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 17:55

Reported

2024-06-20 17:58

Platform

win7-20240419-en

Max time kernel

150s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2148 set thread context of 2680 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe
PID 2700 set thread context of 2204 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2148 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe
PID 2148 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe
PID 2148 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe
PID 2148 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe
PID 2148 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe
PID 2148 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe
PID 2680 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2680 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2680 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2680 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2700 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2700 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2700 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2700 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2700 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
PID 2700 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 medo1234.no-ip.biz udp

Files

memory/2680-0-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2680-5-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2680-4-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2680-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2680-6-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2680-8-0x0000000000650000-0x0000000000651000-memory.dmp

memory/2680-7-0x0000000000400000-0x00000000004B4000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

MD5 0869a45dfb764a310b0c60c1a0c670b5
SHA1 4295e431c62cfb804328f8346a5869cdfcefc4ef
SHA256 dc7aed44048b31cab605e96936140d6e1a7c37a41a746246a5b9a151a4b52ad1
SHA512 8893b448e7237ac7c88475dedc9a6f8b51e079e9633869dee918bc228e20ce0507039a780b12f8fdee06afac06ec370d988afb550d249b07b45136fadd1edbb2

memory/2680-19-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2204-29-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2204-28-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2204-30-0x00000000002A0000-0x00000000002A1000-memory.dmp

memory/2204-32-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2204-31-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/2204-33-0x0000000000400000-0x00000000004B4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 17:55

Reported

2024-06-20 17:58

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe"

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\0869a45dfb764a310b0c60c1a0c670b5_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1240 -ip 1240

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1240 -s 228

Network

Files

N/A