orcus | ddc0c6b0467b9e19731ed947628be108a0c21e67bd5a2163d58f7bf0d739e0a9

General

Target

idk.exe
Size

839KB
MD5

f521ace1616a6758a2260a50fbf6286a
SHA1

be8dbd2d331c283a168d770cf60d6e4aec4b6276
SHA256

ddc0c6b0467b9e19731ed947628be108a0c21e67bd5a2163d58f7bf0d739e0a9
SHA512

7cb3fb0730389adf4871704ba6841c165c4482f37abb28f4140e1cc142396aad41a4b50f2b04972e4226a3195d94ed23b8a4c05ad05f6a1b1ad882e86a6978b4
SSDEEP

24576:ipS04YNEMuExDiU6E5R9s8xY/2l/dmtnIbt+r0:iL4auS+UjfU2TmdIbt+r

Score

10^/10

orcus discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

5.tcp.eu.ngrok.io

Mutex

bae94ac6e0b84a89a9f6ff37336aca85

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
01/07/2025 19:00:24
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-1-5-21-114766061-2901990051-2372745435-1000\Control Panel\International\Geo\Nation	idk.exe

Executes dropped EXE 1 IoCs

pid	Process
4992	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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
14	5.tcp.eu.ngrok.io
49	5.tcp.eu.ngrok.io

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 24 IoCs

pid	Process
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe
4992	AudioDriver.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4992	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4992	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4992	AudioDriver.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 4992	2476	idk.exe	84
PID 2476 wrote to memory of 4992	2476	idk.exe	84
PID 2476 wrote to memory of 4992	2476	idk.exe	84

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:2476
- 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:4992

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
839KB

MD5
f521ace1616a6758a2260a50fbf6286a

SHA1
be8dbd2d331c283a168d770cf60d6e4aec4b6276

SHA256
ddc0c6b0467b9e19731ed947628be108a0c21e67bd5a2163d58f7bf0d739e0a9

SHA512
7cb3fb0730389adf4871704ba6841c165c4482f37abb28f4140e1cc142396aad41a4b50f2b04972e4226a3195d94ed23b8a4c05ad05f6a1b1ad882e86a6978b4

Download Submit
memory/2476-0-0x0000000074A82000-0x0000000074A83000-memory.dmp

Filesize
4KB

Download
memory/2476-1-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/2476-2-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/2476-8-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/4992-7-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/4992-9-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download

Analysis

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