Overview

overview

10

Static

static

10

idk.exe

windows10-ltsc 2021-x64

10

idk.exe

windows11-21h2-x64

7

Analysis

  • max time kernel
    142s
  • max time network
    146s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    10-01-2025 21:14

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General

  • Target

    idk.exe

  • Size

    839KB

  • MD5

    45702e3cbbd1b1fa5bc5b2e1add59a28

  • SHA1

    62f523fc942ad0fde771da6591c6e80d62112f3b

  • SHA256

    885a499d2e0fd28f91423772902b48903d59ef9d11222ceacdb5d46159d41401

  • SHA512

    42b13e3bdc31255e62ee49c4e7d2c16486948ba1e5787dbfe8a8178ed5fae759e682c7d44c2ad10e283e83c5a4b12ca916f0ea3b9abb027a52435949293fe61e

  • SSDEEP

    24576:PpS04YNEMuExDiU6E5R9s8xY/2l/dmtnIbt+rq:PL4auS+UjfU2TmdIbt+r

Score
10/10
orcusdiscoveryratspywarestealer

Malware Config

Extracted

Family

orcus

C2

0.tcp.eu.ngrok.io

Mutex

e45414bed9c8456683882800b3d5feba

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

    01/10/2025 22:12:47

  • 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.

    ratspywarestealerorcus
  • Orcus family
    orcus
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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
  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • 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:4108
    • 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:2628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    839KB

    MD5

    45702e3cbbd1b1fa5bc5b2e1add59a28

    SHA1

    62f523fc942ad0fde771da6591c6e80d62112f3b

    SHA256

    885a499d2e0fd28f91423772902b48903d59ef9d11222ceacdb5d46159d41401

    SHA512

    42b13e3bdc31255e62ee49c4e7d2c16486948ba1e5787dbfe8a8178ed5fae759e682c7d44c2ad10e283e83c5a4b12ca916f0ea3b9abb027a52435949293fe61e

    Download Submit

  • memory/2628-8-0x00000000752E0000-0x0000000075891000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2628-9-0x00000000752E0000-0x0000000075891000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2628-10-0x00000000752E0000-0x0000000075891000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4108-0-0x00000000752E2000-0x00000000752E3000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4108-1-0x00000000752E0000-0x0000000075891000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4108-2-0x00000000752E0000-0x0000000075891000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4108-7-0x00000000752E0000-0x0000000075891000-memory.dmp

    Filesize

    5.7MB

    Download