Resubmissions

17/03/2025, 16:00

250317-tf3cssxms8 10

17/03/2025, 15:57

250317-td9dbstwgs 10

Analysis

  • max time kernel
    104s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250313-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/03/2025, 16:00

General

  • Target

    GrimClient3.5.exe

  • Size

    42KB

  • MD5

    f8aad0ba44c22a03a92c8a992de6f188

  • SHA1

    a8f8ac95ee5a49a473104581ba073118c0f545f7

  • SHA256

    ccf8f646ddf20ba1e354c3ad35880e441d78ab292a2fd8b2edd49f3abfbe0422

  • SHA512

    7fa3cb08ee2b176ddaeb3bf20bed0a46a583c87a01922851975e1d191999f47a9dfe4421c8eb50c15c5c8b97d80c99d3da59fc97eb7756b84a216d5b61f51820

  • SSDEEP

    384:7AfIRHS2LtjR39hxiTRWgxfYTx2s/XZxIh/9oJEFq5nm0GTAsQ4KQsLd/SfgUfAQ:Z7DxURWf4uZvLlGTjQ4KZKfgm3Eht+

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1351222685405024296/pvzGqfhW1MeB2uoiUPX5kRWkfddZIOBcx4zo8SpxDvoTeVdF_InCZ3P760g3QMnaEEnA

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\GrimClient3.5.exe
    "C:\Users\Admin\AppData\Local\Temp\GrimClient3.5.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of AdjustPrivilegeToken
    PID:4944

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4944-0-0x00007FF95BE53000-0x00007FF95BE55000-memory.dmp

    Filesize

    8KB

  • memory/4944-1-0x0000000000060000-0x0000000000070000-memory.dmp

    Filesize

    64KB

  • memory/4944-2-0x00007FF95BE50000-0x00007FF95C911000-memory.dmp

    Filesize

    10.8MB

  • memory/4944-3-0x00007FF95BE53000-0x00007FF95BE55000-memory.dmp

    Filesize

    8KB

  • memory/4944-4-0x00007FF95BE50000-0x00007FF95C911000-memory.dmp

    Filesize

    10.8MB

  • memory/4944-8-0x00007FF95BE50000-0x00007FF95C911000-memory.dmp

    Filesize

    10.8MB