Malware Analysis Report

2024-09-22 10:16

Sample ID 240330-ce42kaef6s
Target 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe
SHA256 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7
Tags
remote remcos persistence rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7

Threat Level: Known bad

The file 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe was found to be: Known bad.

Malicious Activity Summary

remote remcos persistence rat

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

Remcos family

Remcos

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-03-30 02:00

Signatures

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

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

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-30 02:00

Reported

2024-03-30 02:03

Platform

win7-20240221-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe"

Signatures

Remcos

rat remcos

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-3XK1S0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\microsofts\\svcs.exe\"" C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-3XK1S0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\microsofts\\svcs.exe\"" C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-3XK1S0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\microsofts\\svcs.exe\"" C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-3XK1S0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\microsofts\\svcs.exe\"" C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe

"C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe"

C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe

"C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 leetboy.dynuddns.net udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 leetboy.dynuddns.net udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 tcp

Files

\Users\Admin\AppData\Roaming\microsofts\svcs.exe

MD5 06f5b8dffc6c138828adbc7f29cfc7f0
SHA1 b59ef5d613a1e49c7034c3ee05780ce054ca0054
SHA256 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7
SHA512 e706a0b3b1981cac8ddcf81482b306b4538fbfbf5c332f2b484f8c503b66d73cd09ffaab0515ecb2063d1e4a27dc30a662cc0be4f5287d2982cfbb47c7dad893

C:\ProgramData\logsa\logs.dat

MD5 87d511193d3a18a10042d27541381ba3
SHA1 ad3efb0b8d860ebaf05a715a947b25dc0e917c24
SHA256 b7b21a2a9161f9e4439dacfad1edfc862025525d4b0dfa01aa1593bfffa992cf
SHA512 be2399bf0b9f052e0846346996c4cf02e961abb9efd4b2d6b9201f03841daaa597b2fe35ae4ae200bd51538f14cdcd3510f2ecdcfc13c70dbaa296a0753a8bc5

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-30 02:00

Reported

2024-03-30 02:03

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe"

Signatures

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-3XK1S0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\microsofts\\svcs.exe\"" C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-3XK1S0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\microsofts\\svcs.exe\"" C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-3XK1S0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\microsofts\\svcs.exe\"" C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-3XK1S0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\microsofts\\svcs.exe\"" C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe

"C:\Users\Admin\AppData\Local\Temp\03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.exe"

C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe

"C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 leetboy.dynuddns.net udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 219.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 20.231.121.79:80 tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 218.135.221.88.in-addr.arpa udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 73.135.221.88.in-addr.arpa udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 leetboy.dynuddns.net udp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
NL 91.92.249.94:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 udp

Files

C:\Users\Admin\AppData\Roaming\microsofts\svcs.exe

MD5 06f5b8dffc6c138828adbc7f29cfc7f0
SHA1 b59ef5d613a1e49c7034c3ee05780ce054ca0054
SHA256 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7
SHA512 e706a0b3b1981cac8ddcf81482b306b4538fbfbf5c332f2b484f8c503b66d73cd09ffaab0515ecb2063d1e4a27dc30a662cc0be4f5287d2982cfbb47c7dad893

C:\ProgramData\logsa\logs.dat

MD5 4e358cd5c7d22533870189fccd2e9fba
SHA1 f6ab90fb2cd1adda3e483d5d5b3559c5eebd580a
SHA256 da87473d7865cb1780a89c901a5bd8a629cd18441f3939278c19b9e99e0afe1e
SHA512 76e0312284dcbab5b8285c7387c0e903612d67faf784061f4f5949db0d2a525ef57eb7c22976e6f5a440277ce9dbde9a13b91916cdd176130b687fe3d1729719