Malware Analysis Report

2024-09-22 10:41

Sample ID 240329-en69dshd4s
Target 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7
SHA256 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7
Tags
remote remcos persistence
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 was found to be: Known bad.

Malicious Activity Summary

remote remcos persistence

Remcos family

Checks computer location settings

Executes dropped EXE

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-03-29 04:06

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-29 04:06

Reported

2024-03-29 04:08

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

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-1-5-21-275798769-4264537674-1142822080-1000\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-1-5-21-275798769-4264537674-1142822080-1000\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-1-5-21-275798769-4264537674-1142822080-1000\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
IT 185.196.11.223:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 223.11.196.185.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.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 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 20.231.121.79:80 tcp
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 30.243.111.52.in-addr.arpa udp
IT 185.196.11.223:1998 leetboy.dynuddns.net tcp
IT 185.196.11.223:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 leetboy.dynuddns.net udp
IT 185.196.11.223:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 17.173.189.20.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 2b84fdcf91527b195757358adc27de82
SHA1 73bf6ee5644cf7ab210e6563ca1aebda32a1f20f
SHA256 4bfb0c0e08b611063cad7356cb92b060313f914ece6af35835cfe41d52ef2a57
SHA512 ec255e1cd4596455ff66fc78024149c9054264ebf460aacb7d45281e700a7f7b012c70951a605936b242c2d9775bb026320840960351a21d81e19973d83e27ac

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-29 04:06

Reported

2024-03-29 04:08

Platform

win11-20240221-en

Max time kernel

148s

Max time network

151s

Command Line

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

Signatures

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-1-5-21-4181651180-3163410697-3990547336-1000\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-1-5-21-4181651180-3163410697-3990547336-1000\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 leetboy.dynuddns.net udp
IT 185.196.11.223:1998 leetboy.dynuddns.net tcp
US 8.8.8.8:53 223.11.196.185.in-addr.arpa udp
NL 178.237.33.50:80 geoplugin.net tcp
US 52.111.227.13:443 tcp
IT 185.196.11.223:1998 leetboy.dynuddns.net tcp
IT 185.196.11.223:1998 leetboy.dynuddns.net tcp
IT 185.196.11.223:1998 leetboy.dynuddns.net tcp

Files

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

MD5 06f5b8dffc6c138828adbc7f29cfc7f0
SHA1 b59ef5d613a1e49c7034c3ee05780ce054ca0054
SHA256 03ba551339062106448ff58cbc393338483439513ec8439497bf47153e13f4b7
SHA512 e706a0b3b1981cac8ddcf81482b306b4538fbfbf5c332f2b484f8c503b66d73cd09ffaab0515ecb2063d1e4a27dc30a662cc0be4f5287d2982cfbb47c7dad893

C:\ProgramData\logsa\logs.dat

MD5 2b84fdcf91527b195757358adc27de82
SHA1 73bf6ee5644cf7ab210e6563ca1aebda32a1f20f
SHA256 4bfb0c0e08b611063cad7356cb92b060313f914ece6af35835cfe41d52ef2a57
SHA512 ec255e1cd4596455ff66fc78024149c9054264ebf460aacb7d45281e700a7f7b012c70951a605936b242c2d9775bb026320840960351a21d81e19973d83e27ac