Malware Analysis Report

2024-12-07 22:23

Sample ID 240409-2r8mysfh35
Target xw8oKxLrOnt6.exe
SHA256 0986af462eaf8a1a2fd770259b663e0c82539764fc49f03755a0a8034e239231
Tags
remotehost remcos
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0986af462eaf8a1a2fd770259b663e0c82539764fc49f03755a0a8034e239231

Threat Level: Known bad

The file xw8oKxLrOnt6.exe was found to be: Known bad.

Malicious Activity Summary

remotehost remcos

Remcos family

Unsigned PE

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-09 22:50

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-09 22:50

Reported

2024-04-09 22:53

Platform

win10v2004-20240226-en

Max time kernel

162s

Max time network

177s

Command Line

"C:\Users\Admin\AppData\Local\Temp\xw8oKxLrOnt6.exe"

Signatures

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\xw8oKxLrOnt6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\xw8oKxLrOnt6.exe

"C:\Users\Admin\AppData\Local\Temp\xw8oKxLrOnt6.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4256 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 asegurar100.4cloud.click udp
SE 46.246.14.10:8888 asegurar100.4cloud.click tcp
US 8.8.8.8:53 10.14.246.46.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 122.10.44.20.in-addr.arpa udp

Files

C:\ProgramData\remcos\logs.dat

MD5 f8d7412cc8eaf2e46b7a8e75a22e18f7
SHA1 a063786cefa7b85134672d69e9ac826d11a07ff1
SHA256 5041eafa3adf09cfbf2270ea15bbf0df82bb847b45b9bd1469d74ae8ccd4f932
SHA512 36986ee1cdd5d55a5525dda843952f9f2c937a739ad09aaf9484364dff1467c34dc26441b04390fb2b7c3ee964d3d9e006f2d54c6bc8a8a5cb12fa60d3f5ec9b

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-09 22:50

Reported

2024-04-09 22:52

Platform

win7-20240221-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\xw8oKxLrOnt6.exe"

Signatures

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\xw8oKxLrOnt6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\xw8oKxLrOnt6.exe

"C:\Users\Admin\AppData\Local\Temp\xw8oKxLrOnt6.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 asegurar100.4cloud.click udp
SE 46.246.14.10:8888 asegurar100.4cloud.click tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

C:\ProgramData\remcos\logs.dat

MD5 fb69e4cbc35193ec553a5a0a1869b65d
SHA1 9a14bdd68783b5c2d53865017bfadfde54f32291
SHA256 4c1c236a9e2029f28e2c8f87b7224327641c991583efb204422aa20149144fdb
SHA512 bb3a0d4c38947cbed7b374654cbaecf8266f2913479ae0902b5075ae9b5d91b598d33993238e376658bc0338b9e1995e86f9d4ec9782cc6b99df85f8ca725812