Malware Analysis Report

2025-03-15 06:51

Sample ID 240110-bemlvacba3
Target 9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6
SHA256 9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6
Tags
persistence orcus sss rat spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6

Threat Level: Known bad

The file 9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6 was found to be: Known bad.

Malicious Activity Summary

persistence orcus sss rat spyware stealer

Orcus

Orcurs Rat Executable

Adds Run key to start application

AutoIT Executable

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of AdjustPrivilegeToken

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-10 01:03

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

2024-01-10 01:03

Reported

2024-01-10 01:06

Platform

win7-20231129-en

Max time kernel

0s

Max time network

1s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\dllhost = "C:\\Users\\Admin\\AppData\\Roaming\\servicesystem32\\servicesystem32.exe" C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe

"C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-10 01:03

Reported

2024-01-10 01:06

Platform

win10v2004-20231215-en

Max time kernel

146s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcurs Rat Executable

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "C:\\Users\\Admin\\AppData\\Roaming\\servicesystem32\\servicesystem32.exe" C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1936 set thread context of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1936 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1936 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1936 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1936 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1936 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1936 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1936 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1936 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe

"C:\Users\Admin\AppData\Local\Temp\9f12848371e2a30727608ff2f42cd59b19c0e7ebad4bb8b5bd737757949834a6.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 0.181.190.20.in-addr.arpa udp
N/A 10.8.0.222:19276 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
N/A 10.8.0.222:19276 tcp
N/A 10.8.0.222:19276 tcp
N/A 10.8.0.222:19276 tcp
N/A 10.8.0.222:19276 tcp
US 8.8.8.8:53 177.178.17.96.in-addr.arpa udp
N/A 10.8.0.222:19276 tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
N/A 10.8.0.222:19276 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
N/A 10.8.0.222:19276 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
N/A 10.8.0.222:19276 tcp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
N/A 10.8.0.222:19276 tcp
N/A 10.8.0.222:19276 tcp
US 8.8.8.8:53 74.239.69.13.in-addr.arpa udp
N/A 10.8.0.222:19276 tcp

Files

memory/1936-9-0x0000000004A90000-0x0000000004A91000-memory.dmp

memory/1936-12-0x00000000056C0000-0x00000000056C1000-memory.dmp

memory/4924-11-0x0000000000400000-0x00000000004E8000-memory.dmp

memory/1936-10-0x0000000004A90000-0x0000000004A91000-memory.dmp

memory/1936-13-0x00000000056D0000-0x00000000056D1000-memory.dmp

memory/1936-16-0x00000000056D0000-0x00000000056D1000-memory.dmp

memory/1936-15-0x00000000056D0000-0x00000000056D1000-memory.dmp

memory/4924-19-0x00000000054A0000-0x00000000054B0000-memory.dmp

memory/4924-20-0x0000000005410000-0x000000000546C000-memory.dmp

memory/4924-18-0x0000000005400000-0x000000000540E000-memory.dmp

memory/4924-21-0x0000000005AF0000-0x0000000006094000-memory.dmp

memory/4924-17-0x00000000736F0000-0x0000000073EA0000-memory.dmp

memory/4924-22-0x00000000055E0000-0x0000000005672000-memory.dmp

memory/1936-14-0x00000000056D0000-0x00000000056D1000-memory.dmp

memory/4924-24-0x00000000060A0000-0x00000000060B8000-memory.dmp

memory/4924-26-0x0000000006230000-0x0000000006240000-memory.dmp

memory/4924-27-0x0000000006600000-0x000000000660A000-memory.dmp

memory/4924-25-0x0000000006410000-0x00000000065D2000-memory.dmp

memory/4924-23-0x0000000005AC0000-0x0000000005AD2000-memory.dmp

memory/1936-28-0x00000000056D0000-0x00000000056D1000-memory.dmp

memory/4924-29-0x00000000736F0000-0x0000000073EA0000-memory.dmp

memory/4924-30-0x00000000054A0000-0x00000000054B0000-memory.dmp