Analysis

  • max time kernel
    148s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-04-2024 01:17

General

  • Target

    3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe

  • Size

    4.8MB

  • MD5

    b3605edf698023865b1e65852ff9e627

  • SHA1

    93c8ce5f7dd2e69edd50ef26d00f89b4bfbe20b7

  • SHA256

    3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255

  • SHA512

    e7a82bbcd5bf3c9799248ecb91837e5f94431e7a1ad5515dd847d1b1cfce44b76e37981694ae14e5f1f30eab3d98088ef4751ce9b8b83ea11bbc1d9c95ea8ad2

  • SSDEEP

    12288:937z0DEczgGtM6oHYuFr7H13jeGeTaGHK4juSAxJWjbA/bJLoGI:WD2twmd

Malware Config

Extracted

Family

marsstealer

Botnet

Default

Signatures

  • Mars Stealer

    An infostealer written in C++ based on other infostealers.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe
    "C:\Users\Admin\AppData\Local\Temp\3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4076
    • C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x64 Redistributable Setup_10.0.40219\QN8R84.exe
      "C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x64 Redistributable Setup_10.0.40219\QN8R84.exe"
      2⤵
      • Executes dropped EXE
      PID:3448
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4472 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3388

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x64 Redistributable Setup_10.0.40219\QN8R84.exe

      Filesize

      159KB

      MD5

      00333d129e6ef188664819662a141476

      SHA1

      41605ab3ceffff75a4abd29d2df0fe26bc7de8a1

      SHA256

      82314104e7bccbced4fbe95a65273d88678b183e45f4fffa8abf2a4ee6a06ee7

      SHA512

      cb762a2b092fe00ce7c6b99816084dfd6d34d59dde8eb6ccad5f8c031f892f0a495fce7e8600e8fdcd3989f828813a06a5dc23feeb5f2ba7c8c649b9f0a8a150

    • memory/3448-11-0x0000000000400000-0x000000000043D000-memory.dmp

      Filesize

      244KB

    • memory/4076-0-0x0000000074D90000-0x0000000075540000-memory.dmp

      Filesize

      7.7MB

    • memory/4076-1-0x0000000000820000-0x0000000000896000-memory.dmp

      Filesize

      472KB

    • memory/4076-2-0x00000000052F0000-0x0000000005300000-memory.dmp

      Filesize

      64KB

    • memory/4076-13-0x0000000074D90000-0x0000000075540000-memory.dmp

      Filesize

      7.7MB