Analysis

  • max time kernel
    147s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2024 01:03

General

  • Target

    3def5685bcba5bde6993fc2a6dac2082ebdf0a608ed158bffcc0530692c9fb83.exe

  • Size

    842KB

  • MD5

    eee49c00db8227d3bba2e0a7bfede60e

  • SHA1

    a2cbdff93ffad0e944c4d7d807d72a97a681431c

  • SHA256

    3def5685bcba5bde6993fc2a6dac2082ebdf0a608ed158bffcc0530692c9fb83

  • SHA512

    3c8ae70b78f21a054c167f184288db9fc42876ad434465d4f1ef8aa6571215f41f1c6e6aeb2b118f0d1ba833092b51f2f78079dc24cb8cd987df928254636098

  • SSDEEP

    24576:rY/S04YNEMuExDiU6E5R9s8xY/2l/dFLbB83oIbt+rT:rY14auS+UjfU2TVb63oIbt+r

Malware Config

Extracted

Family

orcus

C2

127.0.0.1

Mutex

b9b1f00b4fb14d0298e9777e900b7f5d

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

    12/22/2024 16:34:42

  • plugins

    AgUFyfihswTdIPqEArukcmEdSF06Hw9CAFMAbwBEACAAUAByAG8AdABlAGMAdABpAG8AbgAHAzEALgAwAEEgMQA2ADkAMAAyADgAYQAzADkAYQBjAGMANABiADkAZAA5ADUAZAA3ADgAYQA3AGUAZgA0ADcAZAA1ADgAMgBkAAEAAAACAg==

  • reconnect_delay

    10000

  • registry_autostart_keyname

    Audio HD Driver

  • registry_hidden_autostart

    false

  • set_admin_flag

    false

  • 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
  • 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 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3def5685bcba5bde6993fc2a6dac2082ebdf0a608ed158bffcc0530692c9fb83.exe
    "C:\Users\Admin\AppData\Local\Temp\3def5685bcba5bde6993fc2a6dac2082ebdf0a608ed158bffcc0530692c9fb83.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\WindowsInput.InstallLog

    Filesize

    224B

    MD5

    e469dda91ae810a1f94c96060f3f8a65

    SHA1

    0b4b3b0f6f937016b1e045ce5313ee2a65a38630

    SHA256

    d42fee8db8eb0e047ca53ad59b1c9bc69fe04993be36fec502e3532371908842

    SHA512

    2eb4037361c03e195c642a53f55a3182a6df19903db503060e366f2394750e64ae04fdaace61ef5a6dba649defc88322d78edd2928bc53ebd1ce11d68cc88dac

  • C:\Windows\SysWOW64\WindowsInput.InstallLog

    Filesize

    597B

    MD5

    c2291863df7c2d3038ce3c22fa276506

    SHA1

    7b7d2bc07a6c35523807342c747c9b6a19f3184e

    SHA256

    14504199bede3f46129969dbd2b7680f2e5b7fcd73a3e427ce1bb6217a6d13da

    SHA512

    00bf40174a67e3e663d18a887c5b461a1e5ead0b27f0a139d87969158c58f4ca72cfa5a731dda239356192ca4cb5ac6ae2b0e37401d534e686cabacd3cbee8fa

  • \Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    e854a4636afc652b320e12e50ba4080e

    SHA1

    8a4ac6ecc22ee5f3a8ec846d38b41ff18c641fdc

    SHA256

    94b9c78c6fa2bf61fba20a08ad4563f7dd2f5668c28eff227965ce0a2032d5d5

    SHA512

    30aabd5079b6ed0948eb70fd18e9166096e4ba5d1d47fc35b7270f931d19bbe6cd929b6010f70297bf5272dc5a79e2523721354d211c4080d68ad8d17e316118

  • memory/2368-13-0x000007FEF524E000-0x000007FEF524F000-memory.dmp

    Filesize

    4KB

  • memory/2368-40-0x000007FEF4F90000-0x000007FEF592D000-memory.dmp

    Filesize

    9.6MB

  • memory/2368-25-0x000007FEF4F90000-0x000007FEF592D000-memory.dmp

    Filesize

    9.6MB

  • memory/2368-24-0x000007FEF4F90000-0x000007FEF592D000-memory.dmp

    Filesize

    9.6MB

  • memory/2856-3-0x0000000073FF0000-0x00000000746DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2856-0-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

    Filesize

    4KB

  • memory/2856-2-0x0000000000340000-0x000000000034A000-memory.dmp

    Filesize

    40KB

  • memory/2856-6-0x0000000000AD0000-0x0000000000ADC000-memory.dmp

    Filesize

    48KB

  • memory/2856-5-0x0000000000700000-0x0000000000708000-memory.dmp

    Filesize

    32KB

  • memory/2856-1-0x0000000001270000-0x0000000001348000-memory.dmp

    Filesize

    864KB

  • memory/2856-4-0x0000000000C10000-0x0000000000C5C000-memory.dmp

    Filesize

    304KB

  • memory/2856-41-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

    Filesize

    64KB

  • memory/2856-42-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

    Filesize

    4KB

  • memory/2856-43-0x0000000073FF0000-0x00000000746DE000-memory.dmp

    Filesize

    6.9MB