Analysis

  • max time kernel
    117s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    17/01/2022, 10:45

General

  • Target

    c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe

  • Size

    280KB

  • MD5

    32e1ba395eaa235596885ccf14cf79ab

  • SHA1

    839b52680d2fc8a9119327aa932c940caa8473ba

  • SHA256

    c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8

  • SHA512

    de7a94f8facc2bcf2140b730db9dd54d28d2eead6f185648e0564906887ee14e91e1ce921583b7cf89f569d83977bfb767ddd33dbabe0fcd7da99fbfc522ffeb

Malware Config

Extracted

Family

arkei

Botnet

homesteadr

C2

http://homesteadr.link/ggate.php

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • Arkei Stealer Payload 2 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe
    "C:\Users\Admin\AppData\Local\Temp\c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\c72b0d0159dc7b63d534ced5d0b07388be9ea4efc5b0dafaab0f4c081119c1b8.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4364
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:4408

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1628-116-0x0000000000720000-0x000000000073C000-memory.dmp

          Filesize

          112KB

        • memory/1628-117-0x0000000000400000-0x00000000005D0000-memory.dmp

          Filesize

          1.8MB