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Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27/01/2025, 01:13

General

  • Target

    0321be602a40fb4526ed4c494716043895e02f8bb2c84dae5b62429e4ecec754.exe

  • Size

    839KB

  • MD5

    f8fbd7b9f090423f8851529e647a64ef

  • SHA1

    177dc6e93a4808fa1fb7e1dcd9235ce4559dbc8b

  • SHA256

    0321be602a40fb4526ed4c494716043895e02f8bb2c84dae5b62429e4ecec754

  • SHA512

    f6b173d1952bf663188c80b8c7c05b4e854d708aa561a4e490cb33840295105c3871121196bec5ad66fdc421d6f4c77e3aaf55e33dda3136dacfac00d0239db9

  • SSDEEP

    24576:wFS04YNEMuExDiU6E5R9s8xY/2l/drtnIbt+r5:w34auS+UjfU2TrdIbt+r

Malware Config

Extracted

Family

orcus

C2

192.168.2.7

Mutex

131f2624515a483697ab2414836891bb

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

    01/25/2025 18:29:37

  • 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 36 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\0321be602a40fb4526ed4c494716043895e02f8bb2c84dae5b62429e4ecec754.exe
    "C:\Users\Admin\AppData\Local\Temp\0321be602a40fb4526ed4c494716043895e02f8bb2c84dae5b62429e4ecec754.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2520
    • 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:1816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    839KB

    MD5

    f8fbd7b9f090423f8851529e647a64ef

    SHA1

    177dc6e93a4808fa1fb7e1dcd9235ce4559dbc8b

    SHA256

    0321be602a40fb4526ed4c494716043895e02f8bb2c84dae5b62429e4ecec754

    SHA512

    f6b173d1952bf663188c80b8c7c05b4e854d708aa561a4e490cb33840295105c3871121196bec5ad66fdc421d6f4c77e3aaf55e33dda3136dacfac00d0239db9

  • memory/1816-11-0x0000000074EE0000-0x000000007548B000-memory.dmp

    Filesize

    5.7MB

  • memory/1816-13-0x0000000074EE0000-0x000000007548B000-memory.dmp

    Filesize

    5.7MB

  • memory/1816-14-0x0000000074EE0000-0x000000007548B000-memory.dmp

    Filesize

    5.7MB

  • memory/1816-15-0x0000000074EE0000-0x000000007548B000-memory.dmp

    Filesize

    5.7MB

  • memory/2520-0-0x0000000074EE1000-0x0000000074EE2000-memory.dmp

    Filesize

    4KB

  • memory/2520-1-0x0000000074EE0000-0x000000007548B000-memory.dmp

    Filesize

    5.7MB

  • memory/2520-2-0x0000000074EE0000-0x000000007548B000-memory.dmp

    Filesize

    5.7MB

  • memory/2520-12-0x0000000074EE0000-0x000000007548B000-memory.dmp

    Filesize

    5.7MB