Malware Analysis Report

2025-03-15 06:48

Sample ID 250112-drne1stmex
Target resemble.exe
SHA256 e678ff4a92b44050d4f7cac84306913c2a6972ab0a3d9f599ecdc3fbcc2d04ee
Tags
orcus discovery 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

e678ff4a92b44050d4f7cac84306913c2a6972ab0a3d9f599ecdc3fbcc2d04ee

Threat Level: Known bad

The file resemble.exe was found to be: Known bad.

Malicious Activity Summary

orcus discovery rat spyware stealer

Orcus family

Orcus

Executes dropped EXE

Checks computer location settings

Drops desktop.ini file(s)

Drops file in Windows directory

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SendNotifyMessage

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-12 03:14

Signatures

Orcus family

orcus

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-12 03:14

Reported

2025-01-12 03:17

Platform

win10ltsc2021-20241211-en

Max time kernel

129s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\resemble.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2366345620-3342093254-3461191856-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\resemble.exe

"C:\Users\Admin\AppData\Local\Temp\resemble.exe"

C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 across-entitled.gl.at.ply.gg udp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp
US 8.8.8.8:53 25.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp

Files

memory/4868-0-0x00000000750C2000-0x00000000750C3000-memory.dmp

memory/4868-1-0x00000000750C0000-0x0000000075671000-memory.dmp

memory/4868-2-0x00000000750C0000-0x0000000075671000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

MD5 5e36a1e6ce8f02b3665f095a581102be
SHA1 68b6f9c3a1d9261c63d601a623429373cbf2375c
SHA256 e678ff4a92b44050d4f7cac84306913c2a6972ab0a3d9f599ecdc3fbcc2d04ee
SHA512 3f828591125f7596a63b8e0d9497082f79e632cfb69f3a07964ae4510ff41e1dca68794d0679047b545cfe13d360493e07169ad622e4257d4b051a9b736c5fe1

memory/4868-7-0x00000000750C0000-0x0000000075671000-memory.dmp

memory/1924-8-0x00000000750C0000-0x0000000075671000-memory.dmp

memory/1924-9-0x00000000750C0000-0x0000000075671000-memory.dmp

memory/1924-10-0x00000000750C0000-0x0000000075671000-memory.dmp

memory/1924-11-0x00000000750C0000-0x0000000075671000-memory.dmp

memory/1924-12-0x00000000750C0000-0x0000000075671000-memory.dmp

memory/1924-13-0x00000000750C0000-0x0000000075671000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-12 03:14

Reported

2025-01-12 03:17

Platform

win11-20241023-en

Max time kernel

146s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\resemble.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\resemble.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\resemble.exe

"C:\Users\Admin\AppData\Local\Temp\resemble.exe"

C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 across-entitled.gl.at.ply.gg udp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp
US 147.185.221.25:7354 across-entitled.gl.at.ply.gg tcp

Files

memory/1584-0-0x0000000075231000-0x0000000075232000-memory.dmp

memory/1584-1-0x0000000075230000-0x00000000757E1000-memory.dmp

memory/1584-2-0x0000000075230000-0x00000000757E1000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

MD5 5e36a1e6ce8f02b3665f095a581102be
SHA1 68b6f9c3a1d9261c63d601a623429373cbf2375c
SHA256 e678ff4a92b44050d4f7cac84306913c2a6972ab0a3d9f599ecdc3fbcc2d04ee
SHA512 3f828591125f7596a63b8e0d9497082f79e632cfb69f3a07964ae4510ff41e1dca68794d0679047b545cfe13d360493e07169ad622e4257d4b051a9b736c5fe1

memory/1584-19-0x0000000075230000-0x00000000757E1000-memory.dmp

memory/4824-18-0x0000000075230000-0x00000000757E1000-memory.dmp

memory/4824-20-0x0000000075230000-0x00000000757E1000-memory.dmp

memory/4824-21-0x0000000075230000-0x00000000757E1000-memory.dmp

memory/4824-22-0x0000000075230000-0x00000000757E1000-memory.dmp

memory/4824-23-0x0000000075230000-0x00000000757E1000-memory.dmp