Malware Analysis Report

2025-01-22 14:46

Sample ID 241127-brhteswmcn
Target b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f
SHA256 b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f
Tags
rat kompas group 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f

Threat Level: Known bad

The file b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f was found to be: Known bad.

Malicious Activity Summary

rat kompas group orcus discovery spyware stealer

Orcus

Orcus family

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

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

2024-11-27 01:22

Signatures

Orcus family

orcus

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-27 01:22

Reported

2024-11-27 01:25

Platform

win7-20240903-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.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\Roaming\Microsoft\Speech\AudioDriver.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\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A 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\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe

"C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe"

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

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

Network

Country Destination Domain Proto
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp

Files

memory/3024-0-0x000000007469E000-0x000000007469F000-memory.dmp

memory/3024-1-0x0000000000C70000-0x0000000000D48000-memory.dmp

memory/3024-2-0x0000000000320000-0x000000000032A000-memory.dmp

memory/3024-3-0x0000000074690000-0x0000000074D7E000-memory.dmp

memory/3024-4-0x0000000000A00000-0x0000000000A4C000-memory.dmp

memory/3024-7-0x0000000000D50000-0x0000000000D9E000-memory.dmp

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

MD5 56a5bd1af43f7dafd36f07bcd326f38f
SHA1 95658d034db1988a810a90279cf040bd64e47b23
SHA256 b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f
SHA512 81a3ff8e73cd8e96aa3aa1c32969ff5bd953a99f811074d26682506e02f545f3ece338a125c381c9ec3ccc7e38d4814d5ffb26c6c994792fa9b4f3a2b234e9bc

memory/2748-14-0x0000000074690000-0x0000000074D7E000-memory.dmp

memory/2748-15-0x0000000000150000-0x0000000000228000-memory.dmp

memory/3024-16-0x0000000074690000-0x0000000074D7E000-memory.dmp

memory/2748-17-0x0000000074690000-0x0000000074D7E000-memory.dmp

memory/2748-18-0x0000000002120000-0x0000000002130000-memory.dmp

memory/2748-19-0x0000000074690000-0x0000000074D7E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-27 01:22

Reported

2024-11-27 01:25

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.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

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\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A
N/A N/A 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\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.exe

"C:\Users\Admin\AppData\Local\Temp\b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f.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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
SG 157.245.148.149:10134 tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.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
SG 157.245.148.149:10134 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
SG 157.245.148.149:10134 tcp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
US 8.8.8.8:53 74.209.201.84.in-addr.arpa udp
SG 157.245.148.149:10134 tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
SG 157.245.148.149:10134 tcp
US 8.8.8.8:53 171.117.168.52.in-addr.arpa udp

Files

memory/3992-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

memory/3992-1-0x0000000000C30000-0x0000000000D08000-memory.dmp

memory/3992-2-0x0000000003010000-0x000000000301A000-memory.dmp

memory/3992-3-0x0000000074DF0000-0x00000000755A0000-memory.dmp

memory/3992-4-0x0000000005D10000-0x00000000062B4000-memory.dmp

memory/3992-5-0x0000000005B80000-0x0000000005C12000-memory.dmp

memory/3992-6-0x0000000005AE0000-0x0000000005B2C000-memory.dmp

memory/3992-9-0x0000000005C20000-0x0000000005C6E000-memory.dmp

memory/3992-10-0x0000000005CA0000-0x0000000005CB8000-memory.dmp

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

MD5 56a5bd1af43f7dafd36f07bcd326f38f
SHA1 95658d034db1988a810a90279cf040bd64e47b23
SHA256 b2e7f5497b0cc51ccc1ef2ae65965b2afc47a6149aea27801f23a638c7838d2f
SHA512 81a3ff8e73cd8e96aa3aa1c32969ff5bd953a99f811074d26682506e02f545f3ece338a125c381c9ec3ccc7e38d4814d5ffb26c6c994792fa9b4f3a2b234e9bc

memory/3992-23-0x0000000074DF0000-0x00000000755A0000-memory.dmp

memory/4000-22-0x0000000074DF0000-0x00000000755A0000-memory.dmp

memory/4000-24-0x0000000074DF0000-0x00000000755A0000-memory.dmp

memory/4000-25-0x0000000005470000-0x0000000005488000-memory.dmp

memory/4000-26-0x0000000005CD0000-0x0000000005E92000-memory.dmp

memory/4000-27-0x0000000005530000-0x0000000005540000-memory.dmp

memory/4000-28-0x0000000006210000-0x000000000621A000-memory.dmp

memory/4000-29-0x0000000074DF0000-0x00000000755A0000-memory.dmp