Malware Analysis Report

2025-01-02 03:22

Sample ID 240723-h1bj2atdmg
Target 043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728
SHA256 043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728
Tags
remcos zip rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728

Threat Level: Known bad

The file 043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728 was found to be: Known bad.

Malicious Activity Summary

remcos zip rat

Remcos

Suspicious use of SetThreadContext

Unsigned PE

Runs regedit.exe

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-07-23 07:11

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-23 07:11

Reported

2024-07-23 07:14

Platform

win7-20240704-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe"

Signatures

Remcos

rat remcos

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3056 set thread context of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe

Runs regedit.exe

Description Indicator Process Target
N/A N/A C:\Windows\regedit.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\regedit.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Mail\wab.exe
PID 3056 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\system32\WerFault.exe
PID 3056 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\system32\WerFault.exe
PID 3056 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe

"C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe"

C:\Windows\regedit.exe

"C:\Windows\regedit.exe"

C:\Program Files (x86)\Windows Mail\wab.exe

"C:\Program Files (x86)\Windows Mail\wab.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 3056 -s 644

Network

Country Destination Domain Proto
US 8.8.8.8:53 vegetachcnc.com udp
US 107.173.4.18:2556 vegetachcnc.com tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/3056-0-0x000007FEF5013000-0x000007FEF5014000-memory.dmp

memory/3056-1-0x0000000001300000-0x000000000130A000-memory.dmp

memory/3056-2-0x000000001ADC0000-0x000000001AE92000-memory.dmp

memory/3056-3-0x000000001AE90000-0x000000001AF62000-memory.dmp

memory/3056-4-0x000007FEF5010000-0x000007FEF59FC000-memory.dmp

memory/2828-8-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2828-5-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2828-12-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2828-11-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2828-10-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2828-9-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2828-7-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2828-6-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2864-25-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-24-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-26-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-27-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-28-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-29-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-33-0x000007FEF5013000-0x000007FEF5014000-memory.dmp

memory/3056-34-0x000007FEF5010000-0x000007FEF59FC000-memory.dmp

memory/2864-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-37-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2864-45-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-23 07:11

Reported

2024-07-23 07:14

Platform

win10v2004-20240709-en

Max time kernel

149s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe"

Signatures

Remcos

rat remcos

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3224 set thread context of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 864 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 612 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 612 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe
PID 3224 wrote to memory of 612 N/A C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe C:\Program Files (x86)\Windows Media Player\wmplayer.exe

Processes

C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe

"C:\Users\Admin\AppData\Local\Temp\043f6e5b65055436ee950f3ebd72ed16589a34742deea3ad82e946bba1b94728.exe"

C:\Program Files (x86)\Windows Media Player\wmplayer.exe

"C:\Program Files (x86)\Windows Media Player\wmplayer.exe"

C:\Program Files (x86)\Windows Media Player\wmplayer.exe

"C:\Program Files (x86)\Windows Media Player\wmplayer.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 vegetachcnc.com udp
US 107.173.4.18:2556 vegetachcnc.com tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 18.4.173.107.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/3224-0-0x00000235AA3B0000-0x00000235AA3BA000-memory.dmp

memory/3224-1-0x00007FFD691C3000-0x00007FFD691C5000-memory.dmp

memory/3224-2-0x00000235C4810000-0x00000235C48E2000-memory.dmp

memory/3224-3-0x00007FFD691C0000-0x00007FFD69C81000-memory.dmp

memory/864-4-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-5-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-6-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-7-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-8-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-9-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3224-10-0x00007FFD691C0000-0x00007FFD69C81000-memory.dmp

memory/864-11-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-12-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-16-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-24-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-26-0x0000000000400000-0x0000000000482000-memory.dmp

memory/864-25-0x0000000000400000-0x0000000000482000-memory.dmp