Analysis

  • max time kernel
    146s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-12-2024 01:05

General

  • Target

    054697ace0d766b0c0020a079d9293151df9df526d0ce4680961ce842b55f120.exe

  • Size

    846KB

  • MD5

    fa0ab76c614b5804003273d61c3bdcfa

  • SHA1

    3de3e03a0ce85ae4f2ca72f6e4ffcee481ec8ed4

  • SHA256

    054697ace0d766b0c0020a079d9293151df9df526d0ce4680961ce842b55f120

  • SHA512

    e1b34a6d786eec99710981ac3ef643ad19a04f4f49813f258da0d87fd602796817d35808553a424abe64f28c2dcd0349846190bc2f65b39e06549defa9f4291c

  • SSDEEP

    24576:Sl9S04YNEMuExDiU6E5R9s8xY/2l/dOBzIbt+rx:Slv4auS+UjfU2TWzIbt+r

Malware Config

Extracted

Family

orcus

C2

192.168.1.12

Mutex

945d0576fc50418cbdfec84205dea011

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

    12/15/2024 22:14:18

  • plugins

    AgUFyfihswTdIPqEArukcmEdSF06Hw9CAFMAbwBEACAAUAByAG8AdABlAGMAdABpAG8AbgAHAzEALgAwAEEgZAA1ADYANgA2AGQANABiAGEAMABhAGIANABkADYAZAA5ADYANQA2ADgAYgA5ADAANABjADIAMQBlAGQAMQAzAAEFl6aNkQPXkQKOmwKLvFcpr24sKCsVRABpAHMAYQBiAGwAZQAgAFcAZQBiAGMAYQBtACAATABpAGcAaAB0AHMABwMxAC4AMABBIDUAZQBiADMAMgBmADUAZQA2ADcAYwA1ADQANQA0AGEAYgBkADAAOQBmADgAMABjADIAMwA5ADQANwAyADYAZAABAAAEBA==

  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Drops file in System32 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.

  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\054697ace0d766b0c0020a079d9293151df9df526d0ce4680961ce842b55f120.exe
    "C:\Users\Admin\AppData\Local\Temp\054697ace0d766b0c0020a079d9293151df9df526d0ce4680961ce842b55f120.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4532
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:4668
    • 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 SetWindowsHookEx
      PID:392

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    846KB

    MD5

    fa0ab76c614b5804003273d61c3bdcfa

    SHA1

    3de3e03a0ce85ae4f2ca72f6e4ffcee481ec8ed4

    SHA256

    054697ace0d766b0c0020a079d9293151df9df526d0ce4680961ce842b55f120

    SHA512

    e1b34a6d786eec99710981ac3ef643ad19a04f4f49813f258da0d87fd602796817d35808553a424abe64f28c2dcd0349846190bc2f65b39e06549defa9f4291c

  • C:\Windows\SysWOW64\WindowsInput.InstallLog

    Filesize

    597B

    MD5

    c2291863df7c2d3038ce3c22fa276506

    SHA1

    7b7d2bc07a6c35523807342c747c9b6a19f3184e

    SHA256

    14504199bede3f46129969dbd2b7680f2e5b7fcd73a3e427ce1bb6217a6d13da

    SHA512

    00bf40174a67e3e663d18a887c5b461a1e5ead0b27f0a139d87969158c58f4ca72cfa5a731dda239356192ca4cb5ac6ae2b0e37401d534e686cabacd3cbee8fa

  • C:\Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    e854a4636afc652b320e12e50ba4080e

    SHA1

    8a4ac6ecc22ee5f3a8ec846d38b41ff18c641fdc

    SHA256

    94b9c78c6fa2bf61fba20a08ad4563f7dd2f5668c28eff227965ce0a2032d5d5

    SHA512

    30aabd5079b6ed0948eb70fd18e9166096e4ba5d1d47fc35b7270f931d19bbe6cd929b6010f70297bf5272dc5a79e2523721354d211c4080d68ad8d17e316118

  • memory/392-78-0x0000000074CF0000-0x00000000754A0000-memory.dmp

    Filesize

    7.7MB

  • memory/392-77-0x0000000074CFE000-0x0000000074CFF000-memory.dmp

    Filesize

    4KB

  • memory/392-76-0x00000000063A0000-0x00000000063AA000-memory.dmp

    Filesize

    40KB

  • memory/392-75-0x0000000006320000-0x0000000006330000-memory.dmp

    Filesize

    64KB

  • memory/392-74-0x00000000063B0000-0x0000000006572000-memory.dmp

    Filesize

    1.8MB

  • memory/392-72-0x0000000074CF0000-0x00000000754A0000-memory.dmp

    Filesize

    7.7MB

  • memory/392-70-0x0000000074CFE000-0x0000000074CFF000-memory.dmp

    Filesize

    4KB

  • memory/4532-9-0x0000000005480000-0x0000000005488000-memory.dmp

    Filesize

    32KB

  • memory/4532-6-0x00000000051F0000-0x000000000523C000-memory.dmp

    Filesize

    304KB

  • memory/4532-10-0x0000000005D80000-0x0000000005DA2000-memory.dmp

    Filesize

    136KB

  • memory/4532-1-0x0000000000330000-0x000000000040A000-memory.dmp

    Filesize

    872KB

  • memory/4532-2-0x00000000028A0000-0x00000000028AA000-memory.dmp

    Filesize

    40KB

  • memory/4532-3-0x0000000074CF0000-0x00000000754A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4532-4-0x00000000054A0000-0x0000000005A44000-memory.dmp

    Filesize

    5.6MB

  • memory/4532-5-0x0000000005290000-0x0000000005322000-memory.dmp

    Filesize

    584KB

  • memory/4532-73-0x0000000074CF0000-0x00000000754A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4532-8-0x0000000005460000-0x0000000005468000-memory.dmp

    Filesize

    32KB

  • memory/4532-7-0x00000000053A0000-0x0000000005406000-memory.dmp

    Filesize

    408KB

  • memory/4532-11-0x0000000005D60000-0x0000000005D6C000-memory.dmp

    Filesize

    48KB

  • memory/4532-0-0x0000000074CFE000-0x0000000074CFF000-memory.dmp

    Filesize

    4KB

  • memory/4532-59-0x00000000063E0000-0x000000000642E000-memory.dmp

    Filesize

    312KB

  • memory/4668-56-0x00007FF9E87F0000-0x00007FF9E9191000-memory.dmp

    Filesize

    9.6MB

  • memory/4668-39-0x000000001C390000-0x000000001C42C000-memory.dmp

    Filesize

    624KB

  • memory/4668-38-0x000000001BE20000-0x000000001C2EE000-memory.dmp

    Filesize

    4.8MB

  • memory/4668-30-0x000000001B4C0000-0x000000001B4E4000-memory.dmp

    Filesize

    144KB

  • memory/4668-27-0x00007FF9E87F0000-0x00007FF9E9191000-memory.dmp

    Filesize

    9.6MB

  • memory/4668-26-0x00007FF9E87F0000-0x00007FF9E9191000-memory.dmp

    Filesize

    9.6MB

  • memory/4668-25-0x0000000000CE0000-0x0000000000D00000-memory.dmp

    Filesize

    128KB

  • memory/4668-24-0x0000000000C80000-0x0000000000C98000-memory.dmp

    Filesize

    96KB

  • memory/4668-23-0x00007FF9E8AA5000-0x00007FF9E8AA6000-memory.dmp

    Filesize

    4KB