Malware Analysis Report

2025-04-13 23:18

Sample ID 240224-ajqnmacg84
Target a0b72b85949f962c6078005d4185c9f6
SHA256 f7d694848aa9a76e2b8a3ba86ffa69357af5b60f8b8e68653ea422b6f1c743d2
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

f7d694848aa9a76e2b8a3ba86ffa69357af5b60f8b8e68653ea422b6f1c743d2

Threat Level: Known bad

The file a0b72b85949f962c6078005d4185c9f6 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

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-24 00:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-24 00:14

Reported

2024-02-24 00:17

Platform

win7-20240221-en

Max time kernel

120s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.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-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Run\ImeFajla.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ImeFajla.exe\"" C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2924 set thread context of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2924 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe

"C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.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/2924-0-0x00000000740F0000-0x000000007469B000-memory.dmp

memory/2924-2-0x0000000000460000-0x00000000004A0000-memory.dmp

memory/2924-1-0x00000000740F0000-0x000000007469B000-memory.dmp

memory/1028-3-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-4-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-5-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-6-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-7-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-8-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-9-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-10-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1028-13-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1028-14-0x0000000000400000-0x0000000000400000-memory.dmp

memory/2924-16-0x00000000740F0000-0x000000007469B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-24 00:14

Reported

2024-02-24 00:17

Platform

win10v2004-20240221-en

Max time kernel

147s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.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-1-5-21-2828415587-3732861812-1919322417-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ImeFajla.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ImeFajla.exe\"" C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1724 set thread context of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1724 wrote to memory of 232 N/A C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.exe

"C:\Users\Admin\AppData\Local\Temp\a0b72b85949f962c6078005d4185c9f6.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 420 -p 232 -ip 232

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 232 -s 12

Network

Country Destination Domain Proto
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 114.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 13.173.189.20.in-addr.arpa udp

Files

memory/1724-0-0x00000000752C0000-0x0000000075871000-memory.dmp

memory/1724-1-0x00000000752C0000-0x0000000075871000-memory.dmp

memory/1724-2-0x00000000010C0000-0x00000000010D0000-memory.dmp

memory/232-3-0x0000000013140000-0x00000000131F7000-memory.dmp

memory/1724-6-0x00000000752C0000-0x0000000075871000-memory.dmp

memory/232-7-0x0000000000400000-0x0000000000400000-memory.dmp