Analysis

  • max time kernel
    139s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09-01-2025 16:43

General

  • Target

    dasdafwdafhua.exe

  • Size

    839KB

  • MD5

    c68281e7519194a373b234d7939c20b5

  • SHA1

    675d330ae5a970d75f71cc4c0e676cc5eb2cc8fd

  • SHA256

    2fec3d688aca3acb2e8334575291bc07b7d24232a94c1c1e6d05bc74cc9250c7

  • SHA512

    5511f634b2e40ace4174fb04e3c408e28d01ec1824b9f0f75d4606ff5c2761b4dd6b30192d2a38421ac8bdcd657bf48da7e644083a1166d65a34eddc4e67b109

  • SSDEEP

    24576:cBS04YNEMuExDiU6E5R9s8xY/2l/dGtnIbt+rc:cj4auS+UjfU2TGdIbt+r

Malware Config

Extracted

Family

orcus

C2

?sleepyyasian-37412.portmap.host

Mutex

a35dfe6048aa4ebdb8c3144464124e6f

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

    01/09/2025 13:02:20

  • 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\dasdafwdafhua.exe
    "C:\Users\Admin\AppData\Local\Temp\dasdafwdafhua.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2840
    • 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:2700

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    839KB

    MD5

    c68281e7519194a373b234d7939c20b5

    SHA1

    675d330ae5a970d75f71cc4c0e676cc5eb2cc8fd

    SHA256

    2fec3d688aca3acb2e8334575291bc07b7d24232a94c1c1e6d05bc74cc9250c7

    SHA512

    5511f634b2e40ace4174fb04e3c408e28d01ec1824b9f0f75d4606ff5c2761b4dd6b30192d2a38421ac8bdcd657bf48da7e644083a1166d65a34eddc4e67b109

  • memory/2700-12-0x00000000745B0000-0x0000000074B5B000-memory.dmp

    Filesize

    5.7MB

  • memory/2700-13-0x00000000745B0000-0x0000000074B5B000-memory.dmp

    Filesize

    5.7MB

  • memory/2700-14-0x00000000745B0000-0x0000000074B5B000-memory.dmp

    Filesize

    5.7MB

  • memory/2700-15-0x00000000745B0000-0x0000000074B5B000-memory.dmp

    Filesize

    5.7MB

  • memory/2700-16-0x00000000745B0000-0x0000000074B5B000-memory.dmp

    Filesize

    5.7MB

  • memory/2840-0-0x00000000745B1000-0x00000000745B2000-memory.dmp

    Filesize

    4KB

  • memory/2840-1-0x00000000745B0000-0x0000000074B5B000-memory.dmp

    Filesize

    5.7MB

  • memory/2840-2-0x00000000745B0000-0x0000000074B5B000-memory.dmp

    Filesize

    5.7MB

  • memory/2840-11-0x00000000745B0000-0x0000000074B5B000-memory.dmp

    Filesize

    5.7MB