Analysis

  • max time kernel
    120s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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 1 IoCs
  • Orcurs Rat Executable 3 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2464
    • C:\Program Files (x86)\gcc\gcc.exe
      "C:\Program Files (x86)\gcc\gcc.exe"
      2⤵
      • Executes dropped EXE
      PID:2844
  • C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe"
    1⤵
    • Executes dropped EXE
    PID:2864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • \Program Files (x86)\gcc\gcc.exe

    Filesize

    914KB

    MD5

    c9b1f9e57bf2dbc30e4fa277ce690be0

    SHA1

    08db2e77e4631ba758988b9ece9c44ec7531a9ea

    SHA256

    786a9cf7ceaa5f95907624ad42193b1a9581b56eac4689374a68f0cd6069f0f6

    SHA512

    a0497f8e06674749c7d9ff875c1f2fd6b0398328393304bc07883cb63f65af5460cb8966e62917a72c09b3b4f57c060e27f93615bac3c2d898ddc0ffb1ae86f0

  • \Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    e6fcf516d8ed8d0d4427f86e08d0d435

    SHA1

    c7691731583ab7890086635cb7f3e4c22ca5e409

    SHA256

    8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

    SHA512

    c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

  • memory/2228-1-0x0000000074550000-0x0000000074C3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2228-0-0x00000000002A0000-0x000000000038A000-memory.dmp

    Filesize

    936KB

  • memory/2228-2-0x0000000004A00000-0x0000000004A40000-memory.dmp

    Filesize

    256KB

  • memory/2228-3-0x00000000004E0000-0x00000000004EE000-memory.dmp

    Filesize

    56KB

  • memory/2228-4-0x0000000002040000-0x000000000209C000-memory.dmp

    Filesize

    368KB

  • memory/2228-5-0x00000000005F0000-0x0000000000602000-memory.dmp

    Filesize

    72KB

  • memory/2228-34-0x0000000074550000-0x0000000074C3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2464-16-0x000000001B1A0000-0x000000001B220000-memory.dmp

    Filesize

    512KB

  • memory/2464-19-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

    Filesize

    9.9MB

  • memory/2464-15-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

    Filesize

    9.9MB

  • memory/2464-14-0x0000000000A60000-0x0000000000A6C000-memory.dmp

    Filesize

    48KB

  • memory/2844-33-0x0000000000E10000-0x0000000000EFA000-memory.dmp

    Filesize

    936KB

  • memory/2844-35-0x0000000074550000-0x0000000074C3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2844-36-0x0000000004BF0000-0x0000000004C30000-memory.dmp

    Filesize

    256KB

  • memory/2844-37-0x0000000074550000-0x0000000074C3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2864-21-0x00000000002D0000-0x00000000002DC000-memory.dmp

    Filesize

    48KB

  • memory/2864-22-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

    Filesize

    9.9MB

  • memory/2864-38-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

    Filesize

    9.9MB