Malware Analysis Report

2025-03-15 06:51

Sample ID 240101-ytgqgahbdk
Target 3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe
SHA256 3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac
Tags
orcus
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac

Threat Level: Known bad

The file 3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe was found to be: Known bad.

Malicious Activity Summary

orcus

Orcus family

Orcurs Rat Executable

Orcus main payload

Drops desktop.ini file(s)

Drops file in Windows directory

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-01-01 20:04

Signatures

Orcurs Rat Executable

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

Orcus family

orcus

Orcus main payload

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

2024-01-01 20:04

Reported

2024-01-01 20:07

Platform

win7-20231215-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe

"C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe"

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES9A3.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC9A2.tmp"

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe

"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\m-bp7be4.cmdline"

Network

Country Destination Domain Proto
US 8.8.8.8:53 openport.io udp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp

Files

memory/1520-0-0x00000000022D0000-0x000000000232C000-memory.dmp

memory/1520-2-0x000007FEF5520000-0x000007FEF5EBD000-memory.dmp

memory/1520-4-0x000007FEF5520000-0x000007FEF5EBD000-memory.dmp

memory/2280-10-0x0000000000830000-0x00000000008B0000-memory.dmp

memory/1520-18-0x0000000002330000-0x0000000002346000-memory.dmp

memory/1520-22-0x0000000001F10000-0x0000000001F18000-memory.dmp

memory/1520-21-0x0000000001EE0000-0x0000000001EE8000-memory.dmp

memory/1520-20-0x00000000005C0000-0x00000000005D2000-memory.dmp

memory/1520-23-0x0000000001F20000-0x0000000001FA0000-memory.dmp

memory/1520-26-0x0000000001F20000-0x0000000001FA0000-memory.dmp

memory/1520-25-0x000000001AFC0000-0x000000001AFD8000-memory.dmp

memory/1520-28-0x0000000001F20000-0x0000000001FA0000-memory.dmp

memory/1520-27-0x00000000020A0000-0x00000000020B0000-memory.dmp

memory/1520-3-0x0000000001F20000-0x0000000001FA0000-memory.dmp

memory/1520-1-0x0000000000410000-0x000000000041E000-memory.dmp

memory/1520-29-0x000007FEF5520000-0x000007FEF5EBD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-01 20:04

Reported

2024-01-01 20:07

Platform

win10v2004-20231215-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe"

Signatures

Drops desktop.ini file(s)

Description Indicator Process Target
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.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\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe

"C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe"

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES3FF8.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC3FF7.tmp"

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe

"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\0nimwfuf.cmdline"

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 23.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 openport.io udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 49.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
NL 95.85.25.182:20910 openport.io tcp
US 13.85.23.86:443 tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp
US 8.8.8.8:53 75.179.17.96.in-addr.arpa udp
NL 95.85.25.182:20910 openport.io tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
NL 95.85.25.182:20910 tcp
US 8.8.8.8:53 udp
US 13.85.23.86:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
FR 2.18.109.167:443 tcp
US 8.8.8.8:53 udp
US 192.229.221.95:80 tcp
US 8.8.8.8:53 udp
US 13.85.23.86:443 tcp
N/A 20.82.228.9:443 tcp
US 13.85.23.86:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 13.85.23.86:443 tcp
US 8.8.8.8:53 udp
US 13.85.23.86:443 tcp
US 8.8.8.8:53 udp
GB 104.77.160.23:80 tcp
US 8.8.8.8:53 udp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io 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
NL 95.85.25.182:20910 openport.io tcp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
NL 95.85.25.182:20910 openport.io tcp
US 8.8.8.8:53 56.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 164.178.17.96.in-addr.arpa udp
NL 95.85.25.182:20910 openport.io tcp
NL 95.85.25.182:20910 openport.io tcp

Files

memory/4184-1-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

memory/4184-6-0x000000001B4C0000-0x000000001B4CE000-memory.dmp

memory/4184-8-0x000000001BF10000-0x000000001BFAC000-memory.dmp

memory/4184-7-0x000000001B9A0000-0x000000001BE6E000-memory.dmp

memory/4184-3-0x00007FFA82A10000-0x00007FFA833B1000-memory.dmp

memory/4184-2-0x000000001B2D0000-0x000000001B32C000-memory.dmp

memory/4184-0-0x00007FFA82A10000-0x00007FFA833B1000-memory.dmp

memory/4184-22-0x000000001C5D0000-0x000000001C5E6000-memory.dmp

memory/4184-24-0x000000001B220000-0x000000001B232000-memory.dmp

memory/4184-27-0x000000001C9C0000-0x000000001CA22000-memory.dmp

memory/4184-26-0x000000001B2C0000-0x000000001B2C8000-memory.dmp

memory/4184-30-0x000000001CB20000-0x000000001CB3E000-memory.dmp

memory/4184-29-0x000000001D8E0000-0x000000001D9D0000-memory.dmp

memory/4184-31-0x000000001D9E0000-0x000000001DA29000-memory.dmp

memory/4184-28-0x000000001D320000-0x000000001D8DA000-memory.dmp

memory/4184-25-0x000000001B1A0000-0x000000001B1A8000-memory.dmp

memory/4184-33-0x000000001DAC0000-0x000000001DB30000-memory.dmp

memory/4184-32-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

memory/4184-34-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

memory/2520-14-0x0000000000B40000-0x0000000000B50000-memory.dmp

memory/4184-36-0x000000001DD70000-0x000000001DD88000-memory.dmp

memory/4184-37-0x000000001BFB0000-0x000000001BFC0000-memory.dmp

memory/4184-38-0x000000001CB40000-0x000000001CB48000-memory.dmp

memory/4184-40-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

memory/4184-39-0x00007FFA82A10000-0x00007FFA833B1000-memory.dmp

memory/4184-41-0x0000000000DB0000-0x0000000000DC0000-memory.dmp