orcus | 4e91651e58399869da7ebea31f4b56b9b843d72d844b9ec5b719c57fb8db89fc

General

Target

idfk.exe
Size

839KB
MD5

160ae42204fdd77c2f3a351dd5be3a86
SHA1

80524976cbc2b785a8572cc11eac14146435b146
SHA256

4e91651e58399869da7ebea31f4b56b9b843d72d844b9ec5b719c57fb8db89fc
SHA512

ec1b3f85ebeb96072ab14d84497a1719a40746820d9e6d13546c6a06a653c95cf6de15c2884e6b288d95c4b714b726f5fe9c2abb5d5339beff6e9ffa52da1952
SSDEEP

24576:gxdS04YNEMuExDiU6E5R9s8xY/2l/d2tnIbt+r+:wP4auS+UjfU2T2dIbt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

9across-entitled.gl.at.ply.gg

Mutex

cb8ef5c451ab4b9992e1425bb2ece75c

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
01/11/2025 03:43:56
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-1-5-21-3506525125-3566313221-3651816328-1000\Control Panel\International\Geo\Nation	idfk.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	AudioDriver.exe

Drops desktop.ini file(s) 2 IoCs

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

Drops file in Windows directory 3 IoCs

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

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe
2752	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2752	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2752	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2752	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3556 wrote to memory of 2752	3556	idfk.exe	84
PID 3556 wrote to memory of 2752	3556	idfk.exe	84
PID 3556 wrote to memory of 2752	3556	idfk.exe	84

C:\Users\Admin\AppData\Local\Temp\idfk.exe
"C:\Users\Admin\AppData\Local\Temp\idfk.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:3556
- 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:2752

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
839KB

MD5
160ae42204fdd77c2f3a351dd5be3a86

SHA1
80524976cbc2b785a8572cc11eac14146435b146

SHA256
4e91651e58399869da7ebea31f4b56b9b843d72d844b9ec5b719c57fb8db89fc

SHA512
ec1b3f85ebeb96072ab14d84497a1719a40746820d9e6d13546c6a06a653c95cf6de15c2884e6b288d95c4b714b726f5fe9c2abb5d5339beff6e9ffa52da1952

Download Submit
memory/2752-8-0x0000000074C40000-0x00000000751F1000-memory.dmp

Filesize
5.7MB

Download
memory/2752-9-0x0000000074C40000-0x00000000751F1000-memory.dmp

Filesize
5.7MB

Download
memory/2752-10-0x0000000074C40000-0x00000000751F1000-memory.dmp

Filesize
5.7MB

Download
memory/2752-11-0x0000000074C40000-0x00000000751F1000-memory.dmp

Filesize
5.7MB

Download
memory/3556-0-0x0000000074C42000-0x0000000074C43000-memory.dmp

Filesize
4KB

Download
memory/3556-1-0x0000000074C40000-0x00000000751F1000-memory.dmp

Filesize
5.7MB

Download
memory/3556-2-0x0000000074C40000-0x00000000751F1000-memory.dmp

Filesize
5.7MB

Download
memory/3556-7-0x0000000074C40000-0x00000000751F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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