Malware Analysis Report

2025-03-15 06:46

Sample ID 250115-xf8rcssqbp
Target eafwafafa.exe
SHA256 c64daa27c0465771e2df05a9dfd33540793005c5e500b3641f5c52fc06845b82
Tags
rat orcus discovery 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 Overview

score
10/10

SHA256

c64daa27c0465771e2df05a9dfd33540793005c5e500b3641f5c52fc06845b82

Threat Level: Known bad

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

Malicious Activity Summary

rat orcus discovery spyware stealer

Orcus

Orcus family

Checks computer location settings

Executes dropped EXE

Drops desktop.ini file(s)

Legitimate hosting services abused for malware hosting/C2

Drops file in Windows directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-15 18:48

Signatures

Orcus family

orcus

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-15 18:48

Reported

2025-01-15 18:51

Platform

win10ltsc2021-20250113-en

Max time kernel

101s

Max time network

127s

Command Line

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

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3463531801-1484541064-3495084620-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\eafwafafa.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\eafwafafa.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\eafwafafa.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.ngrok.io N/A N/A

Drops file in Windows directory

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

"C:\Users\Admin\AppData\Local\Temp\eafwafafa.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 0.tcp.ngrok.io udp
US 3.135.250.11:19843 0.tcp.ngrok.io tcp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 11.250.135.3.in-addr.arpa udp
US 8.8.8.8:53 60.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 fd.api.iris.microsoft.com udp
IE 20.223.35.26:443 fd.api.iris.microsoft.com tcp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 167.173.78.104.in-addr.arpa udp
US 8.8.8.8:53 8.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/4028-0-0x00000000751D2000-0x00000000751D3000-memory.dmp

memory/4028-1-0x00000000751D0000-0x0000000075781000-memory.dmp

memory/4028-2-0x00000000751D0000-0x0000000075781000-memory.dmp

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

MD5 118dfc8a885a3d4e965570149afe3893
SHA1 224a6d377419a6b2b8214ec0af9b07f3cfe6287c
SHA256 c64daa27c0465771e2df05a9dfd33540793005c5e500b3641f5c52fc06845b82
SHA512 687159a7022036fdddc6973deb0a540ee70f8545c832b065cca712539ee41dca3037949e7f33b388fabdb05f55685f65ead7889b319338d645fb64f3292d8b5c

memory/1100-7-0x00000000751D0000-0x0000000075781000-memory.dmp

memory/4028-8-0x00000000751D0000-0x0000000075781000-memory.dmp

memory/1100-9-0x00000000751D0000-0x0000000075781000-memory.dmp

memory/1100-10-0x00000000751D0000-0x0000000075781000-memory.dmp

memory/1100-11-0x00000000751D0000-0x0000000075781000-memory.dmp

memory/1100-13-0x00000000751D0000-0x0000000075781000-memory.dmp