Malware Analysis Report

2024-10-23 20:38

Sample ID 240627-wz74hawdjj
Target 1709065d9e88bad4a044992fcbd131e3_JaffaCakes118
SHA256 a9c422203b66b4affbf64982802f15d355db7c4882e297aed106a3922ffb8056
Tags
darkcomet persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a9c422203b66b4affbf64982802f15d355db7c4882e297aed106a3922ffb8056

Threat Level: Known bad

The file 1709065d9e88bad4a044992fcbd131e3_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet persistence rat trojan

Darkcomet

Uses the VBS compiler for execution

Adds Run key to start application

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-27 18:22

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-27 18:22

Reported

2024-06-27 18:25

Platform

win7-20240611-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Uses the VBS compiler for execution

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows\CurrentVersion\Run\Testing = "C:\\ProgramData\\Svg64.exe" C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3040 set thread context of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3040 wrote to memory of 2160 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Network

N/A

Files

memory/3040-0-0x0000000074081000-0x0000000074082000-memory.dmp

memory/3040-1-0x0000000074080000-0x000000007462B000-memory.dmp

memory/3040-2-0x0000000074080000-0x000000007462B000-memory.dmp

memory/2160-3-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2160-4-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2160-13-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2160-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2160-10-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2160-9-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2160-8-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2160-7-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2160-6-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2160-5-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/3040-17-0x0000000074080000-0x000000007462B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-27 18:22

Reported

2024-06-27 18:25

Platform

win10v2004-20240508-en

Max time kernel

94s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Uses the VBS compiler for execution

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Testing = "C:\\ProgramData\\Svg64.exe" C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 968 set thread context of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 968 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1709065d9e88bad4a044992fcbd131e3_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1624 -ip 1624

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1624 -s 12

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 35.15.31.184.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/968-0-0x0000000074A22000-0x0000000074A23000-memory.dmp

memory/968-1-0x0000000074A20000-0x0000000074FD1000-memory.dmp

memory/968-2-0x0000000074A20000-0x0000000074FD1000-memory.dmp

memory/1624-3-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/968-8-0x0000000074A20000-0x0000000074FD1000-memory.dmp