Malware Analysis Report

2024-09-22 10:40

Sample ID 240402-mll5fafa7w
Target 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7.zip
SHA256 49fe26a62638e9be791c9f21526edb58ef51f3f8182cbb1a1938c3f6d1f15002
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

49fe26a62638e9be791c9f21526edb58ef51f3f8182cbb1a1938c3f6d1f15002

Threat Level: Known bad

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

Malicious Activity Summary

remote remcos persistence rat

Remcos family

Remcos

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 SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-04-02 10:33

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 10:33

Reported

2024-04-02 10:36

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

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-1-5-21-406356229-2805545415-1236085040-1000\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-1-5-21-406356229-2805545415-1236085040-1000\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
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 tcp

Files

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

MD5 06f5b8dffc6c138828adbc7f29cfc7f0
SHA1 b59ef5d613a1e49c7034c3ee05780ce054ca0054
SHA256 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7
SHA512 e706a0b3b1981cac8ddcf81482b306b4538fbfbf5c332f2b484f8c503b66d73cd09ffaab0515ecb2063d1e4a27dc30a662cc0be4f5287d2982cfbb47c7dad893

C:\ProgramData\logsa\logs.dat

MD5 b19584299df76dab4ae8a9873d9bf58a
SHA1 8b1f8bec8d59d638752397ab3ecbb5855a44ec2f
SHA256 0c8a76afd9f198b72b1cd0ad9026e5079374ed958f766ed9d386e2a449342897
SHA512 6c216e826a93690f2034b556fdf11c2c9b16356ebf7524147671c0967acffb5d9f6c7d0b030f732fa309ab82c1db8b82c6cc5e282a327deb9910cca0c704daff

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 10:33

Reported

2024-04-02 10:35

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

152s

Command Line

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

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\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-1-5-21-566096764-1992588923-1249862864-1000\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-1-5-21-566096764-1992588923-1249862864-1000\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 8.8.8.8:53 217.106.137.52.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 8.8.8.8:53 218.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.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 28.118.140.52.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
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 24.66.18.2.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
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 8.8.8.8:53 202.110.86.104.in-addr.arpa udp
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
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
US 8.8.8.8:53 89.65.42.20.in-addr.arpa udp

Files

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

MD5 06f5b8dffc6c138828adbc7f29cfc7f0
SHA1 b59ef5d613a1e49c7034c3ee05780ce054ca0054
SHA256 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7
SHA512 e706a0b3b1981cac8ddcf81482b306b4538fbfbf5c332f2b484f8c503b66d73cd09ffaab0515ecb2063d1e4a27dc30a662cc0be4f5287d2982cfbb47c7dad893

C:\ProgramData\logsa\logs.dat

MD5 0a77bd5ca249b9611d38144a0696d195
SHA1 bc0ab193214564a9f744d81dda95594c739797b6
SHA256 efca784533d962e0a477cee88a09eb218bc34ed39e1cf15add1379219d40639a
SHA512 6f927468e21134934c3c37090f67cd1bd073e48ee1fa635f954dde1777a66a7ebec705d080083e32235a2cf2bfed42740bf0918055fd0e4ea4ecf7f8edde0c45