Analysis

  • max time kernel
    144s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    24-08-2024 17:26

General

  • Target

    4.5.3.exe

  • Size

    840KB

  • MD5

    2de8bf57c56a51f996da5623b09f2274

  • SHA1

    e41552b27b43e9396ea5536264a64f91986a86c1

  • SHA256

    efc4b0b5be3a3c10ed7fecff17f40139013d7c015e51f46f577ef5406ed7333d

  • SHA512

    95ed140a45565a0d60700bb010ef3da69d1b91c20a369b682f3e7cca0e2f210213d19b52753dd7ba4bbf06b6e2ff75477cdf53e944f0aa2e9648475b8d782952

  • SSDEEP

    24576:AyPS04YNEMuExDiU6E5R9s8xY/2l/dL5Ibt+rt:Ayl4auS+UjfU2TFIbt+r

Malware Config

Extracted

Family

orcus

C2

192.168.10.8

91.92.247.123

tech11.ddns.net

tech22.ddns.net

Mutex

ec3750d27df2422f9771480c02d90266

Attributes
  • administration_rights_required

    false

  • anti_debugger

    false

  • anti_tcp_analyzer

    false

  • antivm

    false

  • autostart_method

    2

  • 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

    04/04/2023 06:41:34

  • plugins

    AgEAAA==

  • reconnect_delay

    10000

  • 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.

  • 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4.5.3.exe
    "C:\Users\Admin\AppData\Local\Temp\4.5.3.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2240
    • 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
      • Suspicious use of SetWindowsHookEx
      PID:2812

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    840KB

    MD5

    2de8bf57c56a51f996da5623b09f2274

    SHA1

    e41552b27b43e9396ea5536264a64f91986a86c1

    SHA256

    efc4b0b5be3a3c10ed7fecff17f40139013d7c015e51f46f577ef5406ed7333d

    SHA512

    95ed140a45565a0d60700bb010ef3da69d1b91c20a369b682f3e7cca0e2f210213d19b52753dd7ba4bbf06b6e2ff75477cdf53e944f0aa2e9648475b8d782952

  • memory/2240-2-0x0000000073F70000-0x000000007465E000-memory.dmp

    Filesize

    6.9MB

  • memory/2240-3-0x0000000000210000-0x000000000021A000-memory.dmp

    Filesize

    40KB

  • memory/2240-0-0x0000000073F7E000-0x0000000073F7F000-memory.dmp

    Filesize

    4KB

  • memory/2240-4-0x0000000001FA0000-0x0000000001FEC000-memory.dmp

    Filesize

    304KB

  • memory/2240-8-0x0000000002180000-0x00000000021CE000-memory.dmp

    Filesize

    312KB

  • memory/2240-1-0x0000000000360000-0x0000000000438000-memory.dmp

    Filesize

    864KB

  • memory/2240-17-0x0000000073F70000-0x000000007465E000-memory.dmp

    Filesize

    6.9MB

  • memory/2812-16-0x0000000000B10000-0x0000000000BE8000-memory.dmp

    Filesize

    864KB

  • memory/2812-15-0x0000000073F70000-0x000000007465E000-memory.dmp

    Filesize

    6.9MB

  • memory/2812-18-0x0000000073F70000-0x000000007465E000-memory.dmp

    Filesize

    6.9MB

  • memory/2812-19-0x0000000000660000-0x0000000000670000-memory.dmp

    Filesize

    64KB

  • memory/2812-20-0x0000000073F70000-0x000000007465E000-memory.dmp

    Filesize

    6.9MB