Malware Analysis Report

2025-01-22 14:49

Sample ID 241130-xk6ska1qcx
Target a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe
SHA256 a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56
Tags
orcus discovery rat spyware stealer upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56

Threat Level: Known bad

The file a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe was found to be: Known bad.

Malicious Activity Summary

orcus discovery rat spyware stealer upx

Orcus

Orcus family

Executes dropped EXE

Checks computer location settings

UPX packed file

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-30 18:55

Signatures

UPX packed file

upx
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: behavioral2

Detonation Overview

Submitted

2024-11-30 18:55

Reported

2024-11-30 18:57

Platform

win10v2004-20241007-en

Max time kernel

91s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\RarSFX0\Image-O‮gpj.scr N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe

"C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe"

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr

"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr" /S

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 67.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp

Files

memory/1904-0-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr

MD5 0c9b9d93b1938108ffe6d2860ae9a32d
SHA1 06891084a5e117b5f8953b336a10cfb149aa9b89
SHA256 ed84165ca307b37979dbf6ea4872b9b4b581beb789fa26fa46d807b348a9a66b
SHA512 f66c7245b411e904d75094e37b488299de992a967b2ba67023bda22b9f34fe4dadbd11b4f344aa55337f41d3565bb4629c5c78ed8b32474eb7764ba4289c5043

memory/1940-7-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

memory/1940-8-0x00000000001D0000-0x00000000002AC000-memory.dmp

memory/1940-9-0x0000000000DB0000-0x0000000000DBA000-memory.dmp

memory/1940-10-0x0000000074D80000-0x0000000075530000-memory.dmp

memory/1940-11-0x0000000005250000-0x00000000057F4000-memory.dmp

memory/1940-12-0x0000000005110000-0x00000000051A2000-memory.dmp

memory/1940-13-0x0000000005080000-0x00000000050CC000-memory.dmp

memory/1940-15-0x0000000074D80000-0x0000000075530000-memory.dmp

memory/1904-16-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp

memory/1904-18-0x00007FF6CD910000-0x00007FF6CD994000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-30 18:55

Reported

2024-11-30 18:57

Platform

win7-20240903-en

Max time kernel

15s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\RarSFX0\Image-O‮gpj.scr N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe

"C:\Users\Admin\AppData\Local\Temp\a3754fbae8f866e178b5f1158a89eeeb770b23026a11b48e79b90ea62d146c56N.exe"

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr

"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr" /S

Network

N/A

Files

memory/2100-0-0x000000013F370000-0x000000013F3F4000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Image-O‮gpj.scr

MD5 0c9b9d93b1938108ffe6d2860ae9a32d
SHA1 06891084a5e117b5f8953b336a10cfb149aa9b89
SHA256 ed84165ca307b37979dbf6ea4872b9b4b581beb789fa26fa46d807b348a9a66b
SHA512 f66c7245b411e904d75094e37b488299de992a967b2ba67023bda22b9f34fe4dadbd11b4f344aa55337f41d3565bb4629c5c78ed8b32474eb7764ba4289c5043

memory/2968-13-0x00000000746CE000-0x00000000746CF000-memory.dmp

memory/2968-14-0x0000000001160000-0x000000000123C000-memory.dmp

memory/2968-15-0x0000000000520000-0x000000000052A000-memory.dmp

memory/2968-16-0x00000000746C0000-0x0000000074DAE000-memory.dmp

memory/2968-17-0x0000000000AE0000-0x0000000000B2C000-memory.dmp

memory/2968-18-0x00000000746C0000-0x0000000074DAE000-memory.dmp

memory/2100-19-0x000000013F370000-0x000000013F3F4000-memory.dmp

memory/2100-21-0x000000013F370000-0x000000013F3F4000-memory.dmp