Malware Analysis Report

2024-12-07 22:33

Sample ID 240409-q6knwsca5x
Target wininit (1).exe
SHA256 c392c14304399e9ad13ede370375ecffa47f30245cb91a413a3fd1150721a929
Tags
remcos remotehost rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c392c14304399e9ad13ede370375ecffa47f30245cb91a413a3fd1150721a929

Threat Level: Known bad

The file wininit (1).exe was found to be: Known bad.

Malicious Activity Summary

remcos remotehost rat

Remcos

Drops startup file

Executes dropped EXE

AutoIT Executable

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious behavior: MapViewOfSection

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-09 13:52

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: behavioral4

Detonation Overview

Submitted

2024-04-09 13:52

Reported

2024-04-09 13:57

Platform

win11-20240221-en

Max time kernel

298s

Max time network

289s

Command Line

"C:\Users\Admin\AppData\Local\Temp\wininit (1).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\excel.vbs C:\Users\Admin\AppData\Local\directory\excel.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\directory\excel.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 852 set thread context of 2292 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe

Suspicious behavior: MapViewOfSection

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

Processes

C:\Users\Admin\AppData\Local\Temp\wininit (1).exe

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

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

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 107.175.229.143:30902 shgoini.com tcp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/4920-10-0x0000000003AC0000-0x0000000003AC4000-memory.dmp

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

MD5 f31d9ee063f3c0e695119c2001526eba
SHA1 318f611a1cc6ea1acfd90e7c96a25c8a296cb98f
SHA256 f123ce5c0da540eeb18ed45e16e3560e7d5071e857ae8cb6c551d1274232a298
SHA512 6bfbdb053b3af17799a15a2eec16be828af3c7f05f9600e510e0d3d01b0c9cfee282cc309d2f615356aa0c45ab261a9bc62d363db5211a7cf778c069d69702a4

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

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/2292-29-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-31-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-37-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2292-46-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-09 13:52

Reported

2024-04-09 13:58

Platform

win7-20240221-en

Max time kernel

122s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

Signatures

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\wininit (1).exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\wininit (1).exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\wininit (1).exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\wininit (1).exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\wininit (1).exe

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

Network

N/A

Files

memory/2612-10-0x00000000002F0000-0x00000000002F4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-09 13:52

Reported

2024-04-09 13:57

Platform

win10-20240404-en

Max time kernel

194s

Max time network

255s

Command Line

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

Signatures

Drops startup file

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

Executes dropped EXE

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

AutoIT Executable

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\directory\excel.exe

Suspicious behavior: MapViewOfSection

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

Processes

C:\Users\Admin\AppData\Local\Temp\wininit (1).exe

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

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

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 720

Network

Country Destination Domain Proto
US 8.8.8.8:53 210.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp

Files

memory/4684-10-0x0000000000A50000-0x0000000000A54000-memory.dmp

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

MD5 b782fcb7b21966d286adb631ce53d10c
SHA1 af76491cc33150896ca45d1a86cc6d37c6c538f6
SHA256 c812d845a97b66335655d6eaa14abb172d26c7dcbca2630e62d6f8ddddcb77f8
SHA512 60140a0f4a307cdc16ea28eade599d4cceb74993423f4258094a0a1025642e7af42dff28ceeca49257c19429b72ba4f9debf4aa50ef2e2213e0111c8fc38c2f6

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

MD5 a04675531940882479c988422f627c21
SHA1 48bb45a49c1600e8f16ffe612170787f841cd969
SHA256 011bee0b69f6d996fd2ddced3a417739375f6a3909ff46d23bcca2f0d14680d5
SHA512 f8f2e1c49d7a7153a8522488a259ff37927c6c133b2030fdf70728aa034b02f2fd704d2bba7ad6660eb0f6b3696108a26df1c479723330f49ea0e462c13ba24c

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

MD5 7b4ee3164750a624febb01f867bdb208
SHA1 2c68f3bc9f02ef7229da72935b33053885ad19e0
SHA256 fc648d1008816e63cb562eec07b7ae56ab4c5be06da13282a213f9c9e6f3c2a5
SHA512 aa088d535f08520ba2299da40c2e5c6ee1375eb67ac9f2438f431bda1312d024e38793c1b074f08b0accf8bf89db630b46de5b9883036b84ab50b473bbc1dc41

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-09 13:52

Reported

2024-04-09 13:58

Platform

win10v2004-20240226-en

Max time kernel

230s

Max time network

307s

Command Line

"C:\Users\Admin\AppData\Local\Temp\wininit (1).exe"

Signatures

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\wininit (1).exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\wininit (1).exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\wininit (1).exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\wininit (1).exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\wininit (1).exe

"C:\Users\Admin\AppData\Local\Temp\wininit (1).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=1424 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 142.250.179.234:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 234.179.250.142.in-addr.arpa udp
US 8.8.8.8:53 233.17.178.52.in-addr.arpa udp

Files

memory/4896-10-0x0000000002600000-0x0000000002604000-memory.dmp