orcus | a05fc7041e7d37234534bf2e34aab9849402bfee36bbc9612474ac5c538e4aad

General

Target

robex.exe
Size

840KB
MD5

64091b1213f1511a9d35ef25bda3d2ec
SHA1

fcf0c019daeb86ae635809b87676f33b27b55cc0
SHA256

a05fc7041e7d37234534bf2e34aab9849402bfee36bbc9612474ac5c538e4aad
SHA512

2b2c6424f722debab98f5e2e4805421f720b8a16ba876372a8028df8bc34434f5d32deef406138c159e7c34d52bc12beda61a5ae6b658225f3aa551fe6c236b3
SSDEEP

24576:Sw2S04YNEMuExDiU6E5R9s8xY/2l/dF5Ibt+rE:SwS4auS+UjfU2TrIbt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

78.24.217.160

Mutex

c745b17e754a4a709d38686b64720eb0

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
03/29/2025 15:15:02
plugins
AgEAAA==
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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	robex.exe

Executes dropped EXE 1 IoCs

pid	Process
5152	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	robex.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
5152	AudioDriver.exe
5152	AudioDriver.exe
5152	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5152	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5152	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
5152	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 5152	2520	robex.exe	90
PID 2520 wrote to memory of 5152	2520	robex.exe	90
PID 2520 wrote to memory of 5152	2520	robex.exe	90

C:\Users\Admin\AppData\Local\Temp\robex.exe
"C:\Users\Admin\AppData\Local\Temp\robex.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- 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
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:5152

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
840KB

MD5
64091b1213f1511a9d35ef25bda3d2ec

SHA1
fcf0c019daeb86ae635809b87676f33b27b55cc0

SHA256
a05fc7041e7d37234534bf2e34aab9849402bfee36bbc9612474ac5c538e4aad

SHA512
2b2c6424f722debab98f5e2e4805421f720b8a16ba876372a8028df8bc34434f5d32deef406138c159e7c34d52bc12beda61a5ae6b658225f3aa551fe6c236b3

Download Submit
memory/2520-0-0x000000007521E000-0x000000007521F000-memory.dmp

Filesize
4KB

Download
memory/2520-1-0x0000000000AF0000-0x0000000000BC8000-memory.dmp

Filesize
864KB

Download
memory/2520-2-0x0000000002FB0000-0x0000000002FBA000-memory.dmp

Filesize
40KB

Download
memory/2520-3-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/2520-4-0x0000000005C20000-0x00000000061C4000-memory.dmp

Filesize
5.6MB

Download
memory/2520-6-0x0000000005990000-0x00000000059DC000-memory.dmp

Filesize
304KB

Download
memory/2520-5-0x0000000005A20000-0x0000000005AB2000-memory.dmp

Filesize
584KB

Download
memory/2520-9-0x0000000005AD0000-0x0000000005B1E000-memory.dmp

Filesize
312KB

Download
memory/2520-22-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5152-24-0x0000000005D60000-0x0000000005F22000-memory.dmp

Filesize
1.8MB

Download
memory/5152-32-0x0000000007070000-0x0000000007082000-memory.dmp

Filesize
72KB

Download
memory/5152-21-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5152-25-0x00000000055C0000-0x00000000055D0000-memory.dmp

Filesize
64KB

Download
memory/5152-26-0x00000000062A0000-0x00000000062AA000-memory.dmp

Filesize
40KB

Download
memory/5152-29-0x0000000006F40000-0x0000000006F4C000-memory.dmp

Filesize
48KB

Download
memory/5152-30-0x0000000006F60000-0x0000000006FC6000-memory.dmp

Filesize
408KB

Download
memory/5152-23-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/5152-33-0x00000000070D0000-0x000000000710C000-memory.dmp

Filesize
240KB

Download
memory/5152-34-0x0000000007110000-0x000000000715C000-memory.dmp

Filesize
304KB

Download
memory/5152-31-0x00000000075F0000-0x0000000007C08000-memory.dmp

Filesize
6.1MB

Download
memory/5152-35-0x0000000007290000-0x000000000739A000-memory.dmp

Filesize
1.0MB

Download
memory/5152-36-0x0000000008140000-0x000000000866C000-memory.dmp

Filesize
5.2MB

Download
memory/5152-37-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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