Malware Analysis Report

2025-03-15 06:40

Sample ID 250126-bf9srswnfs
Target a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908
SHA256 a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908

Threat Level: Known bad

The file a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908 was found to be: Known bad.

Malicious Activity Summary

rat orcus discovery spyware stealer

Orcus family

Orcus

Checks computer location settings

Loads dropped DLL

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-26 01:06

Signatures

Orcus family

orcus

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-26 01:06

Reported

2025-01-26 01:08

Platform

win7-20240903-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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

Processes

C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe

"C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe"

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

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

Network

Country Destination Domain Proto
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp

Files

memory/536-0-0x000000007403E000-0x000000007403F000-memory.dmp

memory/536-1-0x0000000000260000-0x0000000000338000-memory.dmp

memory/536-2-0x00000000005A0000-0x00000000005AA000-memory.dmp

memory/536-3-0x0000000074030000-0x000000007471E000-memory.dmp

memory/536-4-0x0000000001EF0000-0x0000000001F3C000-memory.dmp

memory/536-7-0x0000000002000000-0x000000000204E000-memory.dmp

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

MD5 0ff88f2d12dcbab52e70519e4f7c4fdc
SHA1 8382f9791b597fda7c565a8d82337d904bd5572d
SHA256 a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908
SHA512 b09f1cc3a90dcae3bd4eefdc4c45433387a5729e38e460d66c66acaab0eaf49b7f5f1f1bfa425d998c5de5dab05f8393d6d990b9f592dc15f012e019dc5075e4

memory/2144-16-0x0000000074030000-0x000000007471E000-memory.dmp

memory/2144-15-0x0000000000B90000-0x0000000000C68000-memory.dmp

memory/536-14-0x0000000074030000-0x000000007471E000-memory.dmp

memory/2144-17-0x0000000074030000-0x000000007471E000-memory.dmp

memory/2144-18-0x0000000000330000-0x0000000000340000-memory.dmp

memory/2144-19-0x0000000074030000-0x000000007471E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-26 01:06

Reported

2025-01-26 01:08

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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

Processes

C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.exe

"C:\Users\Admin\AppData\Local\Temp\a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908.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 8.8.8.8.in-addr.arpa udp
N/A 192.168.1.42:8888 tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 202.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 7.98.51.23.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
N/A 192.168.1.42:8888 tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
N/A 192.168.1.42:8888 tcp
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 9.66.18.2.in-addr.arpa udp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
N/A 192.168.1.42:8888 tcp
US 8.8.8.8:53 udp

Files

memory/3760-0-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

memory/3760-1-0x0000000000780000-0x0000000000858000-memory.dmp

memory/3760-3-0x0000000074DA0000-0x0000000075550000-memory.dmp

memory/3760-2-0x00000000051C0000-0x00000000051CA000-memory.dmp

memory/3760-4-0x0000000005870000-0x0000000005E14000-memory.dmp

memory/3760-6-0x0000000005630000-0x000000000567C000-memory.dmp

memory/3760-5-0x00000000056C0000-0x0000000005752000-memory.dmp

memory/3760-9-0x0000000005770000-0x00000000057BE000-memory.dmp

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

MD5 0ff88f2d12dcbab52e70519e4f7c4fdc
SHA1 8382f9791b597fda7c565a8d82337d904bd5572d
SHA256 a7f870bd290a04c2186bc8e4d42eb50f91dc22263a76d97015a8dacf5966f908
SHA512 b09f1cc3a90dcae3bd4eefdc4c45433387a5729e38e460d66c66acaab0eaf49b7f5f1f1bfa425d998c5de5dab05f8393d6d990b9f592dc15f012e019dc5075e4

memory/1188-21-0x0000000074DA0000-0x0000000075550000-memory.dmp

memory/1188-22-0x0000000074DA0000-0x0000000075550000-memory.dmp

memory/1188-23-0x0000000006330000-0x00000000064F2000-memory.dmp

memory/1188-24-0x0000000005CB0000-0x0000000005CC0000-memory.dmp

memory/1188-25-0x0000000006740000-0x000000000674A000-memory.dmp

memory/3760-26-0x0000000074DA0000-0x0000000075550000-memory.dmp

memory/1188-27-0x0000000074DA0000-0x0000000075550000-memory.dmp