Overview

overview

10

Static

static

10

40e91c8d3c...41.exe

windows7-x64

10

40e91c8d3c...41.exe

windows10-2004-x64

10

Analysis

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

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

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General

  • Target

    40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe

  • Size

    849KB

  • MD5

    896c0c618b75a47c9c01eed243f723f9

  • SHA1

    db26f292ad04f287714dafddc6d22b6455888dbf

  • SHA256

    40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341

  • SHA512

    a51732a6b8839be3d525f6566a34bb33efdd8e854f7fd9b88ccc706fa9c047e9d4b64dfe0d79b2dc8661d4e3352f279e623115ff2dc3afa4d13de5dd01c973e8

  • SSDEEP

    24576:4FS04YNEMuExDiU6E5R9s8xY/2l/drtnIbt+rdp:434auS+UjfU2TrdIbt+rv

Score
10/10
orcusdiscoveryratspywarestealer

Malware Config

Extracted

Family

orcus

C2

192.168.1.66

Mutex

64515d4bdc6342c3b19af3653725ee05

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

    01/26/2025 19:20:01

  • 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
  • Orcus family
    orcus
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 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 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe
    "C:\Users\Admin\AppData\Local\Temp\40e91c8d3caf657b3a154ce8f801acd5ce2ed18639f82fe16c42d7603794d341.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2404
    • C:\Users\Admin\AppData\Local\Temp\Script.exe
      "C:\Users\Admin\AppData\Local\Temp\Script.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2772
      • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
        3⤵
        • 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:2592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\Script.exe
    Filesize

    839KB

    MD5

    98a5ba2b1804e05fd8d361429c538d5e

    SHA1

    ff979f68614cdddf6db17ff574a51153fd6358bd

    SHA256

    502302c8b6270b082df08e81c96bde54a220bd6ae2a8ae3b08100529e2a7a753

    SHA512

    ad7ac8fa9511b973dbf5cd691a6d2ebb265e9eeb8549872751d89e8f8f71ca70a8dcc6e5cfa7b678d6cd9ce61096d5536792eb53244eff08ae0ee8fc91b3a478

    Download Submit

  • memory/2404-5-0x0000000000400000-0x00000000004DC000-memory.dmp

    Filesize

    880KB

    Download

  • memory/2772-8-0x00000000740F1000-0x00000000740F2000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2772-9-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2772-10-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2772-19-0x00000000740F0000-0x000000007469B000-memory.dmp

    Filesize

    5.7MB

    Download