Malware Analysis Report

2024-08-06 17:30

Sample ID 240628-befhjasdka
Target 1837abb41ffb9e79123983cac207c736_JaffaCakes118
SHA256 809073a0db03385ab8df958c6deb6b23510464102a4e16f4682d628043e2a9a3
Tags
darkcomet guest16 persistence rat trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

809073a0db03385ab8df958c6deb6b23510464102a4e16f4682d628043e2a9a3

Threat Level: Known bad

The file 1837abb41ffb9e79123983cac207c736_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet guest16 persistence rat trojan upx

Darkcomet

Executes dropped EXE

UPX packed file

Loads dropped DLL

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

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
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
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

2024-06-28 01:03

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 01:03

Reported

2024-06-28 01:05

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Executes dropped EXE

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

UPX packed file

upx
Description Indicator Process Target
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Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Updater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\WinUpdate\\winupdate.exe" C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4888 set thread context of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4888 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 4888 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 4888 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 4888 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 4888 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 4888 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 4888 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 4888 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\svchost.exe

C:\Users\Admin\AppData\Local\Temp\svchost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp
US 8.8.8.8:53 darkjared.no-ip.biz udp

Files

memory/4888-0-0x0000000075292000-0x0000000075293000-memory.dmp

memory/4888-2-0x0000000075290000-0x0000000075841000-memory.dmp

memory/4888-1-0x0000000075290000-0x0000000075841000-memory.dmp

memory/2100-6-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-10-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-16-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-15-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-20-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-19-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4888-18-0x0000000075290000-0x0000000075841000-memory.dmp

memory/2100-17-0x00000000025C0000-0x00000000025C1000-memory.dmp

memory/2100-14-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-12-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\svchost.exe

MD5 e118330b4629b12368d91b9df6488be0
SHA1 ce90218c7e3b90df2a3409ec253048bb6472c2fd
SHA256 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9
SHA512 ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

memory/2100-21-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-22-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-23-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-24-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-25-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-26-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-27-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-28-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-29-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-30-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-31-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-32-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-33-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2100-34-0x0000000000400000-0x00000000004BA000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 01:03

Reported

2024-06-28 01:05

Platform

win7-20240611-en

Max time kernel

150s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Updater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\WinUpdate\\winupdate.exe" C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2024 set thread context of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2024 wrote to memory of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 2024 wrote to memory of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 2024 wrote to memory of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 2024 wrote to memory of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 2024 wrote to memory of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 2024 wrote to memory of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 2024 wrote to memory of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe
PID 2024 wrote to memory of 2896 N/A C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1837abb41ffb9e79123983cac207c736_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\svchost.exe

C:\Users\Admin\AppData\Local\Temp\svchost.exe

Network

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

Files

memory/2024-0-0x0000000074761000-0x0000000074762000-memory.dmp

memory/2024-1-0x0000000074760000-0x0000000074D0B000-memory.dmp

memory/2024-2-0x0000000074760000-0x0000000074D0B000-memory.dmp

\Users\Admin\AppData\Local\Temp\svchost.exe

MD5 ed797d8dc2c92401985d162e42ffa450
SHA1 0f02fc517c7facc4baefde4fe9467fb6488ebabe
SHA256 b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e
SHA512 e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

memory/2896-9-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-16-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-17-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-14-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2896-11-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-10-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-22-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2024-23-0x0000000074760000-0x0000000074D0B000-memory.dmp

memory/2896-24-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-26-0x00000000003F0000-0x00000000003F1000-memory.dmp

memory/2896-25-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-28-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-27-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-29-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-30-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-31-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-32-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-33-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-34-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-35-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-36-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-37-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-38-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-39-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-40-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-41-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-42-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2896-43-0x0000000000400000-0x00000000004BA000-memory.dmp