Analysis

  • max time kernel
    111s
  • max time network
    130s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    17/01/2022, 10:00

General

  • Target

    85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe

  • Size

    280KB

  • MD5

    3443c50a3f82c68489c42f416079135d

  • SHA1

    c55d29de699a66ffc4df52dbb917e3ac40759523

  • SHA256

    85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227

  • SHA512

    b03eb8159c2edf8f17c14e32e48de2673a4a1cd4fc27345af16bbb161ddd4bc1a2bc2a5a392819dc50644e0ccfc47d16372d3d2ccec36860d6569b75c6398ca8

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\85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe
    "C:\Users\Admin\AppData\Local\Temp\85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\85dd04331f4c472e795d3cd3fbd9f6fd165b05af55aa94d429a2c90d56c46227.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2536
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:832

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1992-116-0x00000000022F0000-0x000000000230C000-memory.dmp

          Filesize

          112KB

        • memory/1992-117-0x0000000000400000-0x00000000005D0000-memory.dmp

          Filesize

          1.8MB