Analysis

  • max time kernel
    141s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-02-2024 16:08

General

  • Target

    file.exe

  • Size

    914KB

  • MD5

    c9b1f9e57bf2dbc30e4fa277ce690be0

  • SHA1

    08db2e77e4631ba758988b9ece9c44ec7531a9ea

  • SHA256

    786a9cf7ceaa5f95907624ad42193b1a9581b56eac4689374a68f0cd6069f0f6

  • SHA512

    a0497f8e06674749c7d9ff875c1f2fd6b0398328393304bc07883cb63f65af5460cb8966e62917a72c09b3b4f57c060e27f93615bac3c2d898ddc0ffb1ae86f0

  • SSDEEP

    24576:3W64MROxnFD3orXYf1rrcI0AilFEvxHPHooX:3KMiJhrrcI0AilFEvxHP

Malware Config

Extracted

Family

orcus

C2

4.tcp.eu.ngrok.io:15428

Mutex

0133d229c4e24006957c0e4ab3a52531

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    true

  • install_path

    %programfiles%\\gcc\gcc.exe

  • reconnect_delay

    10000

  • registry_keyname

    System3222

  • taskscheduler_taskname

    System3222

  • watchdog_path

    AppData\Sys322.exe

Signatures

  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Orcus main payload 2 IoCs
  • Orcurs Rat Executable 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:976
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:4992
    • C:\Program Files (x86)\gcc\gcc.exe
      "C:\Program Files (x86)\gcc\gcc.exe"
      2⤵
      • Executes dropped EXE
      PID:4432
  • C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe"
    1⤵
    • Executes dropped EXE
    PID:4420

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\gcc\gcc.exe

    Filesize

    914KB

    MD5

    c9b1f9e57bf2dbc30e4fa277ce690be0

    SHA1

    08db2e77e4631ba758988b9ece9c44ec7531a9ea

    SHA256

    786a9cf7ceaa5f95907624ad42193b1a9581b56eac4689374a68f0cd6069f0f6

    SHA512

    a0497f8e06674749c7d9ff875c1f2fd6b0398328393304bc07883cb63f65af5460cb8966e62917a72c09b3b4f57c060e27f93615bac3c2d898ddc0ffb1ae86f0

  • C:\Program Files (x86)\gcc\gcc.exe

    Filesize

    640KB

    MD5

    03f5e1f51a403f1bc55f972dd41d25e8

    SHA1

    ea9a2b847d86f5b7ffe5fc5bb314b73f5d2437f4

    SHA256

    a63c391ed152fdd4ba39af6bafafd8dcc4c6d8f072147d1e8401ec6775f74e4b

    SHA512

    2182ca42769aa3ac428d2fd001a81730e26ff6da5f5277cb3e157c0130b91eb75fe93c8c0882a38a9bb0ba0f71470fcd3c761038b5fe7bb32abc8edca30a8e43

  • C:\Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    e6fcf516d8ed8d0d4427f86e08d0d435

    SHA1

    c7691731583ab7890086635cb7f3e4c22ca5e409

    SHA256

    8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

    SHA512

    c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

  • C:\Windows\SysWOW64\WindowsInput.exe.config

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • memory/976-7-0x0000000005050000-0x0000000005062000-memory.dmp

    Filesize

    72KB

  • memory/976-50-0x0000000074F40000-0x00000000756F0000-memory.dmp

    Filesize

    7.7MB

  • memory/976-6-0x0000000005070000-0x0000000005102000-memory.dmp

    Filesize

    584KB

  • memory/976-0-0x0000000074F40000-0x00000000756F0000-memory.dmp

    Filesize

    7.7MB

  • memory/976-8-0x00000000054C0000-0x00000000054E2000-memory.dmp

    Filesize

    136KB

  • memory/976-4-0x0000000004F10000-0x0000000004F6C000-memory.dmp

    Filesize

    368KB

  • memory/976-3-0x0000000004E40000-0x0000000004E4E000-memory.dmp

    Filesize

    56KB

  • memory/976-2-0x0000000004F70000-0x0000000004F80000-memory.dmp

    Filesize

    64KB

  • memory/976-1-0x0000000000470000-0x000000000055A000-memory.dmp

    Filesize

    936KB

  • memory/976-5-0x0000000005530000-0x0000000005AD4000-memory.dmp

    Filesize

    5.6MB

  • memory/4420-34-0x0000000019FA0000-0x000000001A0AA000-memory.dmp

    Filesize

    1.0MB

  • memory/4420-56-0x00007FFE26000000-0x00007FFE26AC1000-memory.dmp

    Filesize

    10.8MB

  • memory/4420-57-0x0000000019B80000-0x0000000019B90000-memory.dmp

    Filesize

    64KB

  • memory/4420-32-0x00007FFE26000000-0x00007FFE26AC1000-memory.dmp

    Filesize

    10.8MB

  • memory/4420-33-0x0000000019B80000-0x0000000019B90000-memory.dmp

    Filesize

    64KB

  • memory/4432-51-0x0000000074F40000-0x00000000756F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4432-52-0x00000000053B0000-0x00000000053C0000-memory.dmp

    Filesize

    64KB

  • memory/4432-53-0x00000000051A0000-0x00000000051B2000-memory.dmp

    Filesize

    72KB

  • memory/4432-55-0x0000000074F40000-0x00000000756F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4992-30-0x00007FFE26000000-0x00007FFE26AC1000-memory.dmp

    Filesize

    10.8MB

  • memory/4992-26-0x000000001ADF0000-0x000000001AE2C000-memory.dmp

    Filesize

    240KB

  • memory/4992-25-0x0000000000AC0000-0x0000000000AD2000-memory.dmp

    Filesize

    72KB

  • memory/4992-24-0x000000001AF50000-0x000000001AF60000-memory.dmp

    Filesize

    64KB

  • memory/4992-23-0x00007FFE26000000-0x00007FFE26AC1000-memory.dmp

    Filesize

    10.8MB

  • memory/4992-22-0x00000000002D0000-0x00000000002DC000-memory.dmp

    Filesize

    48KB