Overview

overview

10

Static

static

10

Sigmaboy.exe

windows7-x64

10

Sigmaboy.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-12-2024 23:39

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General

  • Target

    Sigmaboy.exe

  • Size

    839KB

  • MD5

    5ff4807e24e3435c8e2d88be60086109

  • SHA1

    3724453097aa75f412094aa9d72d53be07e99ef6

  • SHA256

    227befcbc16bcd69e4f1b9b634492eba0c952e06b9ed94b199edce3804b84f51

  • SHA512

    0f4a80c5e26b87bb5223d509111c9401ce763fd4f5bfb845ef8cbfde1bfbe0e71c33bc594b4a842948fca731b02a106e138eaec017505bab6b8a454303d71032

  • SSDEEP

    24576:BpS04YNEMuExDiU6E5R9s8xY/2l/dmtnIbt+rP:BL4auS+UjfU2TmdIbt+r

Score
10/10
orcusdiscoveryratspywarestealer

Malware Config

Extracted

Family

orcus

C2

147.185.221.24

Mutex

6dca1f42faa743d681c44618578d8050

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

    12/17/2024 15:29:42

  • 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 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.

    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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Sigmaboy.exe
    "C:\Users\Admin\AppData\Local\Temp\Sigmaboy.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1984
    • 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:1740

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    839KB

    MD5

    5ff4807e24e3435c8e2d88be60086109

    SHA1

    3724453097aa75f412094aa9d72d53be07e99ef6

    SHA256

    227befcbc16bcd69e4f1b9b634492eba0c952e06b9ed94b199edce3804b84f51

    SHA512

    0f4a80c5e26b87bb5223d509111c9401ce763fd4f5bfb845ef8cbfde1bfbe0e71c33bc594b4a842948fca731b02a106e138eaec017505bab6b8a454303d71032

    Download Submit

  • memory/1740-13-0x00000000749E0000-0x0000000074F8B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1740-12-0x00000000749E0000-0x0000000074F8B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1740-14-0x00000000749E0000-0x0000000074F8B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1740-15-0x00000000749E0000-0x0000000074F8B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1984-0-0x00000000749E1000-0x00000000749E2000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1984-1-0x00000000749E0000-0x0000000074F8B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1984-2-0x00000000749E0000-0x0000000074F8B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1984-11-0x00000000749E0000-0x0000000074F8B000-memory.dmp

    Filesize

    5.7MB

    Download