Analysis

  • max time kernel
    30s
  • max time network
    24s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2025, 18:48

General

  • Target

    stub.exe

  • Size

    41KB

  • MD5

    fe5b18fb8ffd1bafb3883bf5d3fb33db

  • SHA1

    d0888345fd3aa400fc8b22cb4dcd30de55929263

  • SHA256

    3e6a1f26ea0c52f493b48f45556b77584e36d647b18499ac734e11394cfd6f71

  • SHA512

    284376f1662894bdc438cd5d8328be38e67836f0e9d8fb389cdfaf16abc622191413d83e39f17826f95241813eba6acc2561e3152474f87fff3acf55b91c73c9

  • SSDEEP

    768:+scGoA2e8jy5M/BgwZuZHesWTjgcXKZKfgm3EhUM:Nc9e8HMesWTsiF7EmM

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/860365364616364055/dWA-5PDcq6nC-drvVUSEcFKm1x7ZFbbUGmmbCWN8YHcHo6Fx_r0b9o2rP45QpRZwNO49

Signatures

  • Mercurial Grabber Stealer

    Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

  • Mercurialgrabber family
  • Reads user/profile data of web browsers 3 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\stub.exe
    "C:\Users\Admin\AppData\Local\Temp\stub.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of AdjustPrivilegeToken
    PID:1208

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1208-0-0x00007FF80D493000-0x00007FF80D495000-memory.dmp

          Filesize

          8KB

        • memory/1208-1-0x0000000000FB0000-0x0000000000FC0000-memory.dmp

          Filesize

          64KB

        • memory/1208-2-0x00007FF80D490000-0x00007FF80DF51000-memory.dmp

          Filesize

          10.8MB

        • memory/1208-3-0x00007FF80D490000-0x00007FF80DF51000-memory.dmp

          Filesize

          10.8MB

        • memory/1208-7-0x00007FF80D490000-0x00007FF80DF51000-memory.dmp

          Filesize

          10.8MB