Malware Analysis Report

2024-10-19 08:01

Sample ID 240415-rfgd8agc28
Target f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118
SHA256 38ecd893e32b6fcfff524f8ab2dc952ef1d7ecf9124babade5321aa29c15ab37
Tags
darkcomet 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

38ecd893e32b6fcfff524f8ab2dc952ef1d7ecf9124babade5321aa29c15ab37

Threat Level: Known bad

The file f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet rat trojan

Darkcomet

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 14:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 14:07

Reported

2024-04-15 14:10

Platform

win7-20240221-en

Max time kernel

119s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1932 set thread context of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1932 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_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/1932-0-0x0000000074440000-0x00000000749EB000-memory.dmp

memory/1932-1-0x0000000074440000-0x00000000749EB000-memory.dmp

memory/1932-2-0x0000000000D00000-0x0000000000D40000-memory.dmp

memory/2732-3-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-4-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-5-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-6-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-7-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-8-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-9-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-10-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2732-13-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2732-14-0x0000000000400000-0x0000000000400000-memory.dmp

memory/1932-15-0x0000000074440000-0x00000000749EB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 14:07

Reported

2024-04-15 14:10

Platform

win10v2004-20240412-en

Max time kernel

135s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2756 set thread context of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2756 wrote to memory of 4984 N/A C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f13e447b8cb18af6955efa0954a34c7e_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 408 -p 4984 -ip 4984

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 12

Network

Country Destination Domain Proto
US 8.8.8.8:53 21.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.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 28.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 123.10.44.20.in-addr.arpa udp

Files

memory/2756-0-0x0000000074E80000-0x0000000075431000-memory.dmp

memory/2756-1-0x00000000014D0000-0x00000000014E0000-memory.dmp

memory/2756-2-0x0000000074E80000-0x0000000075431000-memory.dmp

memory/4984-3-0x0000000013140000-0x00000000131F6000-memory.dmp

memory/2756-5-0x0000000074E80000-0x0000000075431000-memory.dmp

memory/4984-6-0x0000000000400000-0x0000000000400000-memory.dmp