orcus | b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1

General

Target

b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1.exe
Size

843KB
MD5

87bb4d8eea60e5cd562bfa4380078631
SHA1

de28d8733f0d272042f072cbf01ab06211aee62d
SHA256

b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1
SHA512

ee61be05bf1c209e76cabd82a297592a7cd39c111c1e4191c6c1b39d224fcd82fc1f6bde539acf00492b4280fce68672acd5a71d879f65939e1d7d88c702b138
SSDEEP

24576:QxYS04YNEMuExDiU6E5R9s8xY/2l/dWLbB83GIbt+rz:QxA4auS+UjfU2TEb63GIbt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

127.0.0.1

Mutex

d4d31a27f873481d967d9821a2aea5a4

Attributes

administration_rights_required
false
anti_debugger
false
anti_tcp_analyzer
false
antivm
false
autostart_method
1
change_creation_date
false
force_installer_administrator_privileges
false
hide_file
false
install
false
installation_folder
%appdata%\Microsoft\Speech\AudioDriver.exe
installservice
false
keylogger_enabled
false
newcreationdate
01/14/2025 13:24:18
plugins
AgUFl6aNkQPXkQKOmwKLvFcpr24sKCsVRABpAHMAYQBiAGwAZQAgAFcAZQBiAGMAYQBtACAATABpAGcAaAB0AHMABwMxAC4AMABBIDAAOAA1ADIAMwA3ADQANABkAGYANgBjADQANgBkADMAOAAxADAAOQA4ADAANwAwADIANQA1ADUAMwBjAGIAZAABAAAAAgI=
reconnect_delay
10000
registry_autostart_keyname
Audio HD Driver
registry_hidden_autostart
false
set_admin_flag
false
tasksch_name
Audio HD Driver
tasksch_request_highest_privileges
false
try_other_autostart_onfail
false

aes.plain

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus
Orcus family
orcus

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	AudioDriver.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe
4900	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4900	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 4900	1588	b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1.exe	84
PID 1588 wrote to memory of 4900	1588	b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1.exe	84
PID 1588 wrote to memory of 4900	1588	b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1.exe	84

C:\Users\Admin\AppData\Local\Temp\b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1.exe
"C:\Users\Admin\AppData\Local\Temp\b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
843KB

MD5
87bb4d8eea60e5cd562bfa4380078631

SHA1
de28d8733f0d272042f072cbf01ab06211aee62d

SHA256
b3d6cf68e394ae44d2c46f17dfa357e54080d35bd30a7889e714aecbfd8ee9f1

SHA512
ee61be05bf1c209e76cabd82a297592a7cd39c111c1e4191c6c1b39d224fcd82fc1f6bde539acf00492b4280fce68672acd5a71d879f65939e1d7d88c702b138

Download Submit
memory/1588-10-0x0000000005D80000-0x0000000005DCE000-memory.dmp

Filesize
312KB

Download
memory/1588-7-0x0000000005CB0000-0x0000000005CB8000-memory.dmp

Filesize
32KB

Download
memory/1588-3-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/1588-4-0x0000000005E20000-0x00000000063C4000-memory.dmp

Filesize
5.6MB

Download
memory/1588-1-0x0000000000D80000-0x0000000000E5A000-memory.dmp

Filesize
872KB

Download
memory/1588-5-0x0000000005CD0000-0x0000000005D62000-memory.dmp

Filesize
584KB

Download
memory/1588-2-0x0000000003100000-0x000000000310A000-memory.dmp

Filesize
40KB

Download
memory/1588-0-0x00000000751AE000-0x00000000751AF000-memory.dmp

Filesize
4KB

Download
memory/1588-6-0x0000000005C30000-0x0000000005C7C000-memory.dmp

Filesize
304KB

Download
memory/1588-23-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4900-22-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4900-24-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/4900-25-0x00000000063F0000-0x00000000065B2000-memory.dmp

Filesize
1.8MB

Download
memory/4900-26-0x0000000006320000-0x0000000006330000-memory.dmp

Filesize
64KB

Download
memory/4900-27-0x00000000066D0000-0x00000000066DA000-memory.dmp

Filesize
40KB

Download
memory/4900-28-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download

Analysis

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