Analysis

  • max time kernel
    141s
  • max time network
    145s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    11-01-2025 02:42

General

  • Target

    idk.exe

  • Size

    845KB

  • MD5

    cc2cf085bc4a4672c85e0fd612133609

  • SHA1

    7f902447b5a545cd3a11973b76d6277a412aae3f

  • SHA256

    8d087f55b6d2ba153890facd8974e023b4ba6eb7ebaadab807c2e5ff9fc0a2e5

  • SHA512

    c1940cc42eab09ab48552e018ab0618d58b7078f878de2d5b4a6c0b86435cfb81f6418f501766f5f4ddf0943d5133a51a03802d0906cbff233418d76dab4bb49

  • SSDEEP

    24576:qsS04YNEMuExDiU6E5R9s8xY/2l/dguIbt+ro:qE4auS+UjfU2TguIbt+r

Malware Config

Extracted

Family

orcus

C2

9across-entitled.gl.at.ply.gg

Mutex

50016745d5814a2aa66680544dcfd5bd

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

    01/11/2025 03:41:09

  • plugins

    AgUFyfihswTdIPqEArukcmEdSF06Hw9CAFMAbwBEACAAUAByAG8AdABlAGMAdABpAG8AbgAHAzEALgAwAEEgYwA1AGMAZQBkADkANQA2AGIAYgA3AGUANAAxADQAZAA5ADIAZgBjADEAYQAxAGIAMwA3ADIAOQAxAGIAMwA2AAEFl6aNkQPXkQKOmwKLvFcpr24sKCsVRABpAHMAYQBiAGwAZQAgAFcAZQBiAGMAYQBtACAATABpAGcAaAB0AHMABwMxAC4AMABBIGYAYwA2ADcANgAxAGUAZgA4ADEAOAAwADQANgA4AGUAOQBhAGUAZAA5ADMANABhADMAYQBiAGIAYgA4ADAANQABAAAEBA==

  • 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 desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 3 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.

  • Suspicious behavior: EnumeratesProcesses 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 5 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 System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:5268
    • 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:4504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    845KB

    MD5

    cc2cf085bc4a4672c85e0fd612133609

    SHA1

    7f902447b5a545cd3a11973b76d6277a412aae3f

    SHA256

    8d087f55b6d2ba153890facd8974e023b4ba6eb7ebaadab807c2e5ff9fc0a2e5

    SHA512

    c1940cc42eab09ab48552e018ab0618d58b7078f878de2d5b4a6c0b86435cfb81f6418f501766f5f4ddf0943d5133a51a03802d0906cbff233418d76dab4bb49

  • C:\Windows\SysWOW64\WindowsInput.InstallLog

    Filesize

    224B

    MD5

    e469dda91ae810a1f94c96060f3f8a65

    SHA1

    0b4b3b0f6f937016b1e045ce5313ee2a65a38630

    SHA256

    d42fee8db8eb0e047ca53ad59b1c9bc69fe04993be36fec502e3532371908842

    SHA512

    2eb4037361c03e195c642a53f55a3182a6df19903db503060e366f2394750e64ae04fdaace61ef5a6dba649defc88322d78edd2928bc53ebd1ce11d68cc88dac

  • C:\Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    e854a4636afc652b320e12e50ba4080e

    SHA1

    8a4ac6ecc22ee5f3a8ec846d38b41ff18c641fdc

    SHA256

    94b9c78c6fa2bf61fba20a08ad4563f7dd2f5668c28eff227965ce0a2032d5d5

    SHA512

    30aabd5079b6ed0948eb70fd18e9166096e4ba5d1d47fc35b7270f931d19bbe6cd929b6010f70297bf5272dc5a79e2523721354d211c4080d68ad8d17e316118

  • memory/1444-55-0x0000000075410000-0x00000000759C1000-memory.dmp

    Filesize

    5.7MB

  • memory/1444-1-0x0000000075410000-0x00000000759C1000-memory.dmp

    Filesize

    5.7MB

  • memory/1444-2-0x0000000075410000-0x00000000759C1000-memory.dmp

    Filesize

    5.7MB

  • memory/1444-0-0x0000000075412000-0x0000000075413000-memory.dmp

    Filesize

    4KB

  • memory/4504-60-0x0000000075410000-0x00000000759C1000-memory.dmp

    Filesize

    5.7MB

  • memory/4504-59-0x0000000075410000-0x00000000759C1000-memory.dmp

    Filesize

    5.7MB

  • memory/4504-58-0x0000000075410000-0x00000000759C1000-memory.dmp

    Filesize

    5.7MB

  • memory/4504-56-0x0000000075412000-0x0000000075413000-memory.dmp

    Filesize

    4KB

  • memory/4504-57-0x0000000075410000-0x00000000759C1000-memory.dmp

    Filesize

    5.7MB

  • memory/5268-23-0x00007FFDEB150000-0x00007FFDEBAF1000-memory.dmp

    Filesize

    9.6MB

  • memory/5268-52-0x00007FFDEB150000-0x00007FFDEBAF1000-memory.dmp

    Filesize

    9.6MB

  • memory/5268-35-0x000000001D030000-0x000000001D0CC000-memory.dmp

    Filesize

    624KB

  • memory/5268-34-0x000000001CAC0000-0x000000001CF8E000-memory.dmp

    Filesize

    4.8MB

  • memory/5268-26-0x000000001C160000-0x000000001C184000-memory.dmp

    Filesize

    144KB

  • memory/5268-19-0x00007FFDEB405000-0x00007FFDEB406000-memory.dmp

    Filesize

    4KB

  • memory/5268-22-0x00007FFDEB150000-0x00007FFDEBAF1000-memory.dmp

    Filesize

    9.6MB

  • memory/5268-20-0x0000000001820000-0x0000000001838000-memory.dmp

    Filesize

    96KB

  • memory/5268-21-0x0000000001970000-0x0000000001990000-memory.dmp

    Filesize

    128KB