Overview

overview

10

Static

static

31266b2b81...2e.exe

windows7_x64

10

31266b2b81...2e.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    167s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21/06/2022, 00:15

Sharing

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General

  • Target
    31266b2b81192e3794cbbc3340545f10d57c4a327814cfdff35c1560de352c2e.exe
  • Size 2.7MB
  • Sample220621-akd18agef6
  • SHA256 31266b2b81192e3794cbbc3340545f10d57c4a327814cfdff35c1560de352c2e
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
loaderbotxmrigloaderminerpersistence

Malware Config

Extracted

Family

  • loaderbot

C2

  • http://joskiyet.beget.tech/cmd.php

Signatures

  • LoaderBot

    LoaderBot is a loader written in .NET downloading and executing miners.

    loaderminerloaderbot
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

    minerxmrig
  • LoaderBot executable 1 IoCs
  • XMRig Miner payload 3 IoCs
    miner
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Cryptocurrency Miner

    Makes network request to known mining pool URL.

    miner
  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 15 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\31266b2b81192e3794cbbc3340545f10d57c4a327814cfdff35c1560de352c2e.exe
    "C:\Users\Admin\AppData\Local\Temp\31266b2b81192e3794cbbc3340545f10d57c4a327814cfdff35c1560de352c2e.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2632
    • C:\Users\Admin\AppData\Roaming\Sysfiles\Driver.exe
      "C:\Users\Admin\AppData\Roaming\Sysfiles\Driver.exe" -o stratum+tcp://xmr.pool.minergate.com:45700 -u [email protected] -p x -k -v=0 --donate-level=1 -t 1
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3736

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        Driver.exe
        • Path C:\Users\Admin\AppData\Roaming\Sysfiles\Driver.exe
        • Size 3.5MB
        • SHA256 d38ee5052fa13de8b3db050fe84fb89e7946446e2cd5b826fbd31792e406aae2
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        Driver.exe
        • Path C:\Users\Admin\AppData\Roaming\Sysfiles\Driver.exe
        • Size 3.5MB
        • SHA256 d38ee5052fa13de8b3db050fe84fb89e7946446e2cd5b826fbd31792e406aae2
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/2632-133-0x00000000008E0000-0x0000000000FFA000-memory.dmp
        Download

        memory/2632-130-0x00000000008E0000-0x0000000000FFA000-memory.dmp
        Download

        memory/2632-134-0x0000000006E90000-0x0000000006EF6000-memory.dmp
        Download

        memory/2632-132-0x00000000008E0000-0x00000000008E2000-memory.dmp
        Download

        memory/2632-131-0x00000000008E0000-0x0000000000FFA000-memory.dmp
        Download

        memory/3736-138-0x0000000140000000-0x00000001404AB000-memory.dmp
        Download

        memory/3736-139-0x00000000001E0000-0x00000000001F0000-memory.dmp
        Download

        memory/3736-140-0x0000000000000000-0x0000000000200000-memory.dmp
        Download

        memory/3736-141-0x0000000140000000-0x00000001404AB000-memory.dmp
        Download

        memory/3736-142-0x0000000000000000-0x0000000000200000-memory.dmp
        Download