orcus | d6422ed34867718d60a1f1c6d0da73dc4a559fecc95fdc4276ed333630c84935

General

Target

idk.exe
Size

839KB
MD5

77632673688e158e5d9ddb49e6c60860
SHA1

385d43e1d8574b737025589e95a2841b28a7a242
SHA256

d6422ed34867718d60a1f1c6d0da73dc4a559fecc95fdc4276ed333630c84935
SHA512

13a3f4cf36d73890d4582619fb9d75c0eaec619b5ef4b9dbaa50907d083f154b37b2d1677735beaae54fe2e537f205662b276be9eeefa75ccb2098996b64527c
SSDEEP

24576:wxdS04YNEMuExDiU6E5R9s8xY/2l/d2tnIbt+rE:gP4auS+UjfU2T2dIbt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

1turn-calvin.gl.at.ply.gg

Mutex

80e4a2f50c904f43b9a54e56bdd66e6b

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
01/04/2025 22:16:54
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-1-5-21-4084745894-3294430273-2212167662-1000\Control Panel\International\Geo\Nation	idk.exe

Executes dropped EXE 1 IoCs

pid	Process
992	AudioDriver.exe

Loads dropped DLL 1 IoCs

pid	Process
992	AudioDriver.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	idk.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	idk.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	idk.exe
File created	C:\Windows\assembly\Desktop.ini	idk.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	idk.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	idk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
992	AudioDriver.exe
992	AudioDriver.exe
992	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	992	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
992	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
992	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 992	220	idk.exe	81
PID 220 wrote to memory of 992	220	idk.exe	81
PID 220 wrote to memory of 992	220	idk.exe	81

C:\Users\Admin\AppData\Local\Temp\idk.exe
"C:\Users\Admin\AppData\Local\Temp\idk.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:220
- C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:992

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\Local\Temp\opus.dll

Filesize
332KB

MD5
1fc04b8bb4896745163df806695ee193

SHA1
39174ce2fca9a3e86bb7a5686037bc42f2572de1

SHA256
3f2b2fd440fdd84288dadfc63e37a4bc7ea0aae26889ab0d4a5ef6148f44ce14

SHA512
3ff18bdd364f27e54ffbf2d1af53e3500ec57e7e8fa14185f7fb1ef6639d69ac6253543b9e2155ade45ca5bcd567e94334f1ee7ad0a7ff28194168dc49883261

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

Filesize
839KB

MD5
77632673688e158e5d9ddb49e6c60860

SHA1
385d43e1d8574b737025589e95a2841b28a7a242

SHA256
d6422ed34867718d60a1f1c6d0da73dc4a559fecc95fdc4276ed333630c84935

SHA512
13a3f4cf36d73890d4582619fb9d75c0eaec619b5ef4b9dbaa50907d083f154b37b2d1677735beaae54fe2e537f205662b276be9eeefa75ccb2098996b64527c

Download Submit
memory/220-0-0x0000000074B22000-0x0000000074B23000-memory.dmp

Filesize
4KB

Download
memory/220-1-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/220-2-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/220-7-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/992-9-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/992-10-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/992-13-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/992-14-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/992-15-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/992-8-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/992-23-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download
memory/992-24-0x0000000074B20000-0x00000000750D1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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