Analysis

  • max time kernel
    145s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2025 01:04

General

  • Target

    cb825ebfac30b90d899777990c15d4cf8cdfb5c5df0be3dc7d6bf22ebd6490ac.exe

  • Size

    839KB

  • MD5

    d20869b35a6fb9f181dc32ea1125aed4

  • SHA1

    950758ac45697bd6b6af02b0a52e61cd8a472bb5

  • SHA256

    cb825ebfac30b90d899777990c15d4cf8cdfb5c5df0be3dc7d6bf22ebd6490ac

  • SHA512

    399463df0ae2c215ab5c76feef3aa0dd9f2f0d823cc8d4241b55fd5be8de58b1ddc7633f77edd997986dbb880e8a6b7d9966d77cc4d02071496d6ad8faa00103

  • SSDEEP

    24576:ZZS04YNEMuExDiU6E5R9s8xY/2l/dWtnIbt+rD:Zb4auS+UjfU2TWdIbt+r

Malware Config

Extracted

Family

orcus

C2

192.168.1.105

tcp://5.tcp.eu.ngrok.io:19802

Mutex

fd5ef57fc0314679858a399cd066b75e

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

    01/03/2025 20:09:27

  • 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.

  • Orcus family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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.

  • Suspicious behavior: EnumeratesProcesses 39 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cb825ebfac30b90d899777990c15d4cf8cdfb5c5df0be3dc7d6bf22ebd6490ac.exe
    "C:\Users\Admin\AppData\Local\Temp\cb825ebfac30b90d899777990c15d4cf8cdfb5c5df0be3dc7d6bf22ebd6490ac.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1668
    • 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:1692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

    Filesize

    839KB

    MD5

    d20869b35a6fb9f181dc32ea1125aed4

    SHA1

    950758ac45697bd6b6af02b0a52e61cd8a472bb5

    SHA256

    cb825ebfac30b90d899777990c15d4cf8cdfb5c5df0be3dc7d6bf22ebd6490ac

    SHA512

    399463df0ae2c215ab5c76feef3aa0dd9f2f0d823cc8d4241b55fd5be8de58b1ddc7633f77edd997986dbb880e8a6b7d9966d77cc4d02071496d6ad8faa00103

  • memory/1668-0-0x0000000074DA1000-0x0000000074DA2000-memory.dmp

    Filesize

    4KB

  • memory/1668-1-0x0000000074DA0000-0x000000007534B000-memory.dmp

    Filesize

    5.7MB

  • memory/1668-2-0x0000000074DA0000-0x000000007534B000-memory.dmp

    Filesize

    5.7MB

  • memory/1668-11-0x0000000074DA0000-0x000000007534B000-memory.dmp

    Filesize

    5.7MB

  • memory/1692-14-0x0000000074DA0000-0x000000007534B000-memory.dmp

    Filesize

    5.7MB

  • memory/1692-13-0x0000000074DA0000-0x000000007534B000-memory.dmp

    Filesize

    5.7MB

  • memory/1692-12-0x0000000074DA0000-0x000000007534B000-memory.dmp

    Filesize

    5.7MB

  • memory/1692-15-0x0000000074DA0000-0x000000007534B000-memory.dmp

    Filesize

    5.7MB

  • memory/1692-16-0x0000000074DA0000-0x000000007534B000-memory.dmp

    Filesize

    5.7MB