Malware Analysis Report

2024-12-07 22:31

Sample ID 240408-qm5vqade3w
Target wininit.exe
SHA256 3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3
Tags
remcos remotehost 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

3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3

Threat Level: Known bad

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

Malicious Activity Summary

remcos remotehost rat

Remcos

Drops startup file

Executes dropped EXE

Loads dropped DLL

Suspicious use of SetThreadContext

AutoIT Executable

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-08 13:23

Signatures

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-08 13:23

Reported

2024-04-08 13:26

Platform

win7-20240221-en

Max time kernel

149s

Max time network

151s

Command Line

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

Signatures

Remcos

rat remcos

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Users\Admin\AppData\Local\directory\chrome.exe N/A

Executes dropped EXE

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

Loads dropped DLL

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

AutoIT Executable

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2600 set thread context of 2908 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Windows\SysWOW64\svchost.exe

Suspicious behavior: MapViewOfSection

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

Processes

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

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

C:\Users\Admin\AppData\Local\directory\chrome.exe

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

C:\Windows\SysWOW64\svchost.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 shgoini.com udp
US 107.175.229.143:30902 shgoini.com tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/1780-10-0x00000000001A0000-0x00000000001A4000-memory.dmp

\Users\Admin\AppData\Local\directory\chrome.exe

MD5 d2ac20b1da3f74a3d885d7fde97cb706
SHA1 1e02f3205576d1d30593828bb3dff09a7e5b125f
SHA256 bee21dd56814576adc7574ab886ee08484bb448470a9acee69a7c019e7b4fe76
SHA512 46b7b099634686fe055dcb9059228f61229fecc1f45b6be26a9655923753526aae11bb6838a9b1b041da2577362625031feb7aa01e4e851723db8c4dff6a734c

C:\Users\Admin\AppData\Local\Temp\outvaunts

MD5 a5aafcbb781d0c5b2f340a29d0629577
SHA1 5885120f4413bf4256b9722c71982785f741131f
SHA256 fd31cbc5b26cd67d16c85a091779f0af58db13a956d3dc6da79d7822f8ea02cd
SHA512 9cae262aa54357bae92fa09c3fcfbb964df079d391747ef2f3673c3903e19b4f1cb5df85cf78cf8a5ba1d33614e766a4e059fd3681ae4c47a65c750e3b3b8a38

C:\Users\Admin\AppData\Local\Temp\unprickly

MD5 59aa802af60e63fe7d976d2230c8710c
SHA1 f105fac10d095b5019a048a39e666586536a30a1
SHA256 a635bcea499830d578743018ea6841affb8ab25588c8650c9d4ff2a0cbd01236
SHA512 36362896bba93b76869ae5eb6e57a1f4f11a3a6ddbb2a28de0909c870cb44006acf077edc07b8def18b3fd23215973f080c0aa9fde4635e783689c57ac3b0fb4

memory/2908-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-37-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2908-47-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-08 13:23

Reported

2024-04-08 13:26

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

149s

Command Line

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

Signatures

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3516-10-0x00000000005F0000-0x00000000005F4000-memory.dmp