Malware Analysis Report

2024-10-23 20:38

Sample ID 240627-spzslazcjq
Target 167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118
SHA256 a245fe08ea8273021ffe5221401d8d96e13073625e487fcb0c4393fc40854b38
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

a245fe08ea8273021ffe5221401d8d96e13073625e487fcb0c4393fc40854b38

Threat Level: Known bad

The file 167dc7b044b24bfa9a24ddf2a6551f04_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

2024-06-27 15:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-27 15:18

Reported

2024-06-27 15:21

Platform

win7-20240611-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2372 set thread context of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2372 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_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/2372-0-0x0000000074A21000-0x0000000074A22000-memory.dmp

memory/2372-1-0x0000000074A20000-0x0000000074FCB000-memory.dmp

memory/2372-2-0x0000000074A20000-0x0000000074FCB000-memory.dmp

memory/1084-6-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1084-13-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1084-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1084-10-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/2372-14-0x0000000074A20000-0x0000000074FCB000-memory.dmp

memory/1084-9-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1084-8-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1084-7-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1084-5-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1084-4-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1084-3-0x0000000013140000-0x00000000131F7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-27 15:18

Reported

2024-06-27 15:21

Platform

win10v2004-20240611-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 412 set thread context of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 412 wrote to memory of 3704 N/A C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\167dc7b044b24bfa9a24ddf2a6551f04_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 3704 -ip 3704

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3704 -s 12

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/412-0-0x00000000751C2000-0x00000000751C3000-memory.dmp

memory/412-1-0x00000000751C0000-0x0000000075771000-memory.dmp

memory/412-2-0x00000000751C0000-0x0000000075771000-memory.dmp

memory/3704-3-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/412-5-0x00000000751C0000-0x0000000075771000-memory.dmp