Overview

overview

10

Static

static

10

4.5.1.exe

windows7-x64

10

4.5.1.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-08-2024 17:32

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General

  • Target

    4.5.1.exe

  • Size

    840KB

  • MD5

    da5b3fb486e501dfa0a27985f565da40

  • SHA1

    3fe35e3c8e208ee2014ddd213d6947db1167faab

  • SHA256

    8e5bc23e7c6fbddc16388d969727b4a6b6c276ed44c439e92d7302dd9ee05451

  • SHA512

    bfa4defc4d2f17244c187a6d5c3cea86e0c3edac382e292a202871c01ed3e2fc2fedace44f35cb144ad120570e34c7b58a52b8cbb16bfcd51711755762439eba

  • SSDEEP

    24576:9yPS04YNEMuExDiU6E5R9s8xY/2l/dL5Ibt+rt:9yl4auS+UjfU2TFIbt+r

Score
10/10
orcusdiscoveryratspywarestealer

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_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.

    ratspywarestealerorcus
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 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.

    discovery
  • Suspicious behavior: EnumeratesProcesses 40 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4.5.1.exe
    "C:\Users\Admin\AppData\Local\Temp\4.5.1.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3396
    • 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:3532
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4344,i,1828333185976713750,7918646547767660928,262144 --variations-seed-version --mojo-platform-channel-handle=4052 /prefetch:8
    1⤵
      PID:3856

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      840KB

      MD5

      da5b3fb486e501dfa0a27985f565da40

      SHA1

      3fe35e3c8e208ee2014ddd213d6947db1167faab

      SHA256

      8e5bc23e7c6fbddc16388d969727b4a6b6c276ed44c439e92d7302dd9ee05451

      SHA512

      bfa4defc4d2f17244c187a6d5c3cea86e0c3edac382e292a202871c01ed3e2fc2fedace44f35cb144ad120570e34c7b58a52b8cbb16bfcd51711755762439eba

      Download Submit

    • memory/3396-11-0x0000000005ED0000-0x0000000005EE8000-memory.dmp

      Filesize

      96KB

      Download

    • memory/3396-5-0x00000000057F0000-0x0000000005882000-memory.dmp

      Filesize

      584KB

      Download

    • memory/3396-1-0x00000000008B0000-0x0000000000988000-memory.dmp

      Filesize

      864KB

      Download

    • memory/3396-4-0x0000000005910000-0x0000000005EB4000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/3396-23-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

      Download

    • memory/3396-6-0x0000000005760000-0x00000000057AC000-memory.dmp

      Filesize

      304KB

      Download

    • memory/3396-10-0x00000000058A0000-0x00000000058EE000-memory.dmp

      Filesize

      312KB

      Download

    • memory/3396-0-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

      Filesize

      4KB

      Download

    • memory/3396-3-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

      Download

    • memory/3396-2-0x0000000005270000-0x000000000527A000-memory.dmp

      Filesize

      40KB

      Download

    • memory/3532-24-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

      Download

    • memory/3532-25-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

      Download

    • memory/3532-26-0x00000000051C0000-0x00000000051D8000-memory.dmp

      Filesize

      96KB

      Download

    • memory/3532-27-0x0000000005A30000-0x0000000005BF2000-memory.dmp

      Filesize

      1.8MB

      Download

    • memory/3532-28-0x0000000005290000-0x00000000052A0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/3532-29-0x0000000005F70000-0x0000000005F7A000-memory.dmp

      Filesize

      40KB

      Download

    • memory/3532-30-0x0000000074F90000-0x0000000075740000-memory.dmp

      Filesize

      7.7MB

      Download