Malware Analysis Report

2024-12-07 22:31

Sample ID 240408-rrx64sbc42
Target 3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3
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 3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3 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

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 14:26

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 14:26

Reported

2024-04-08 14:28

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.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 2288 set thread context of 3160 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\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe

"C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe"

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

"C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe"

Network

Country Destination Domain Proto
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 150.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 shgoini.com udp
US 107.175.229.143:30902 shgoini.com tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
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 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp

Files

memory/3484-10-0x0000000003610000-0x0000000003614000-memory.dmp

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

MD5 8cd34ec2b2c48a61b2c6e1f013cd733a
SHA1 2a5549c7f0c13c3de714f35074177630e7e75fd7
SHA256 d2e0276aaeca85c5a01a4690554fdb790fb5afcb9852e680bd0c2ca313d8fcf6
SHA512 a2dfc554fc43cfa958af63aa1e37bdecf25c0129bb6ae810eac4fcffedd41fc589357fe24735fd12bb6e87fb74c58c202001163b8d3d99077babf5087f6a6444

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

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/3160-28-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-29-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-31-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-39-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3160-47-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-08 14:26

Reported

2024-04-08 14:28

Platform

win11-20240319-en

Max time kernel

150s

Max time network

160s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.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
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 4512 set thread context of 4784 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
N/A N/A C:\Users\Admin\AppData\Local\directory\chrome.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2404 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe C:\Users\Admin\AppData\Local\directory\chrome.exe
PID 2404 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe C:\Users\Admin\AppData\Local\directory\chrome.exe
PID 2404 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe C:\Users\Admin\AppData\Local\directory\chrome.exe
PID 1868 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Windows\SysWOW64\svchost.exe
PID 1868 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Windows\SysWOW64\svchost.exe
PID 1868 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Windows\SysWOW64\svchost.exe
PID 1868 wrote to memory of 4512 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Users\Admin\AppData\Local\directory\chrome.exe
PID 1868 wrote to memory of 4512 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Users\Admin\AppData\Local\directory\chrome.exe
PID 1868 wrote to memory of 4512 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Users\Admin\AppData\Local\directory\chrome.exe
PID 4512 wrote to memory of 4784 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Windows\SysWOW64\svchost.exe
PID 4512 wrote to memory of 4784 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Windows\SysWOW64\svchost.exe
PID 4512 wrote to memory of 4784 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Windows\SysWOW64\svchost.exe
PID 4512 wrote to memory of 4784 N/A C:\Users\Admin\AppData\Local\directory\chrome.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe

"C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe"

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

"C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\3610a513abb50127c22a6c5d2c84b814a5743ba2de685c031725601a23f3bdc3.exe"

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

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

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\directory\chrome.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/2404-10-0x0000000004600000-0x0000000004604000-memory.dmp

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

MD5 6f74e1ff0533083646edbda5b9c08cb5
SHA1 6275a08d08f59a591ac6fda7e0411d81291110e6
SHA256 720191437118771790b86d094d355c5f19d5cbabd41b275b53fd2aa24d7f6a80
SHA512 d22a0b94391c3467da4666f05ce0ef6adf2854a208795c84217b24b4456c5c84bf5a73e25d3e636bd91078d78d1647a6a61a45ecdbcd330f22e5addc10461a3a

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

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

C:\Users\Admin\AppData\Local\Temp\aut9C4F.tmp

MD5 67a12002d897c143f0579edef1ee5be4
SHA1 938632453bd4ea67cc02846b146c340a34c6f2d6
SHA256 afe6f0eed2587490b8b3b4e4cf4c91f164e36ae30362cae0c8590ce75017b71c
SHA512 65b4df0c1392109b8814c145b2ea903197f0c577bb386f066cb494452f9976af5f5501578c4b44730d85516e9bea9199e1fe3773115134abaf94cb26ba48660d

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

MD5 cf8862c59ffea18bbdf06c45734f0340
SHA1 ac4b045dee3e20770571aeff7dcbd83493b6ad6b
SHA256 aca21122a4a9617e96844f08c3036780485fbe727bf28168482c750727c587fd
SHA512 355f0675e573e4c8b6c32ab222918daa41b6f35375e8124a0af91011381058be36b30a23f06ecb802b91941fb9998ac87e193eb58d879171a686960c39995edc

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

MD5 59aa802af60e63fe7d976d2230c8710c
SHA1 f105fac10d095b5019a048a39e666586536a30a1
SHA256 a635bcea499830d578743018ea6841affb8ab25588c8650c9d4ff2a0cbd01236
SHA512 36362896bba93b76869ae5eb6e57a1f4f11a3a6ddbb2a28de0909c870cb44006acf077edc07b8def18b3fd23215973f080c0aa9fde4635e783689c57ac3b0fb4

C:\Users\Admin\AppData\Local\Temp\autA3A3.tmp

MD5 16a82b0d4f256a21cb79a9442188dcf3
SHA1 4c539edfa7ac6ba59620a4babff966c8507bed14
SHA256 3eda6ff9b8a63b458b00ba458259dfa35cf26bb277761e48d6697e4c855121be
SHA512 2e1173703ff0d9b5f859bfaab8bf897c24b8ec590869624933327a52e87a74a18967c90605ff17ffa2e2674e3b623c3bc901555c2b8fd0f557990e804d103c36

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

MD5 a5aafcbb781d0c5b2f340a29d0629577
SHA1 5885120f4413bf4256b9722c71982785f741131f
SHA256 fd31cbc5b26cd67d16c85a091779f0af58db13a956d3dc6da79d7822f8ea02cd
SHA512 9cae262aa54357bae92fa09c3fcfbb964df079d391747ef2f3673c3903e19b4f1cb5df85cf78cf8a5ba1d33614e766a4e059fd3681ae4c47a65c750e3b3b8a38

memory/4784-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-47-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-48-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-49-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-52-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-53-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-54-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-55-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-57-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-58-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-59-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4784-60-0x0000000000400000-0x0000000000482000-memory.dmp