Malware Analysis Report

2024-12-07 22:29

Sample ID 240408-ql544add81
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: 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

3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3

Threat Level: Known bad

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

Malicious Activity Summary

remcos remotehost rat

Remcos

Executes dropped EXE

Loads dropped DLL

Drops startup file

Suspicious use of SetThreadContext

AutoIT Executable

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of SendNotifyMessage

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-08 13:21

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: behavioral2

Detonation Overview

Submitted

2024-04-08 13:21

Reported

2024-04-08 13:24

Platform

win10v2004-20240319-en

Max time kernel

150s

Max time network

152s

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

AutoIT Executable

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4164 set thread context of 560 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"

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=2632 --field-trial-handle=2244,i,11986678581565715302,451159359636456336,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 shgoini.com udp
US 107.175.229.143:30902 shgoini.com tcp
US 8.8.8.8:53 143.229.175.107.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 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
DE 142.250.74.202:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 202.74.250.142.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 1.173.189.20.in-addr.arpa udp

Files

memory/5080-10-0x00000000040B0000-0x00000000040B4000-memory.dmp

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

MD5 0c742b2ab747dc6f86b3bff7de1ae764
SHA1 78c282efac27b6dd5494c80baf0a3657e6f539e6
SHA256 6b617c295a1cd7da379412e407ca785afa6392fd5e2b07619d15e1d0502089cd
SHA512 be74920d7c9b843b4b85593e9fd27754e5705bda971f3e93e68ce10132906c1d8e7d89f626ed7fd35b2c7fd2be11c33d2e78acdb4b9bcc5ba761cfca6042359d

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

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

MD5 a5aafcbb781d0c5b2f340a29d0629577
SHA1 5885120f4413bf4256b9722c71982785f741131f
SHA256 fd31cbc5b26cd67d16c85a091779f0af58db13a956d3dc6da79d7822f8ea02cd
SHA512 9cae262aa54357bae92fa09c3fcfbb964df079d391747ef2f3673c3903e19b4f1cb5df85cf78cf8a5ba1d33614e766a4e059fd3681ae4c47a65c750e3b3b8a38

memory/560-28-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-29-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-31-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-39-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-47-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-48-0x0000000000400000-0x0000000000482000-memory.dmp

memory/560-49-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-08 13:21

Reported

2024-04-08 13:24

Platform

win7-20240221-en

Max time kernel

150s

Max time network

150s

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 3004 set thread context of 2504 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/2176-10-0x0000000000160000-0x0000000000164000-memory.dmp

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

MD5 9c9bc0f60c893f24dc8611945dde65e0
SHA1 6205e71edbffa0eb7b9d05ef1a86b26c0af10bad
SHA256 b147a687fe5f158bb3378005e4f1e5c1a04543039952ef894a49b876b06b19f6
SHA512 061ba4126cb51adc33c3d567e208d8ca5c46cffb8093a6a87edee2e6973cfac840ef97325dba7da74d6b6a6935a58db894f4391ef73b00ddb09749a58030531d

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/2504-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-37-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-39-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-47-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-48-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-49-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-50-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2504-51-0x0000000000400000-0x0000000000482000-memory.dmp