Analysis

  • max time kernel
    96s
  • max time network
    133s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    19-12-2024 13:03

General

  • Target

    FKjdctVS.exe

  • Size

    42KB

  • MD5

    e7871defe3ff71566b3600eea0f61eb4

  • SHA1

    44692b1477d43c48987daa0a34314b770505ebbf

  • SHA256

    b6c68a183d0a85c967cf0e20082da608c7febca84fb66b1c085bef83c4d76894

  • SHA512

    6a560fa39c23ea83a2049209f0e53935c321395755cc86b25ea25b29ff1315f1a7ee49da2960f9c1b796748195653a86d28506cb3e551d6530cb09d289f0cb27

  • SSDEEP

    768:4cNCbujiewetQDGm8UuZyLxYTjsJKZKfgm3Ehik:XcSQD8ILxYTsF7EQk

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1319288015813873705/C8huyRFXRluYBlR8b0oxd33KZO6CyZgv-Jz8BlN-12x7BXBEBPMZipi5e5oAovfyjlvk

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
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 1 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FKjdctVS.exe
    "C:\Users\Admin\AppData\Local\Temp\FKjdctVS.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Checks SCSI registry key(s)
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious use of AdjustPrivilegeToken
    PID:684
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
    1⤵
    • System Location Discovery: System Language Discovery
    PID:716
  • C:\Windows\System32\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Windows\System32\shell32.dll,Options_RunDLL 0
    1⤵
      PID:3692
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:3772

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/684-0-0x00007FFB7EBF3000-0x00007FFB7EBF5000-memory.dmp

        Filesize

        8KB

      • memory/684-1-0x00000000009A0000-0x00000000009B0000-memory.dmp

        Filesize

        64KB

      • memory/684-2-0x00007FFB7EBF0000-0x00007FFB7F6B2000-memory.dmp

        Filesize

        10.8MB

      • memory/684-3-0x00007FFB7EBF3000-0x00007FFB7EBF5000-memory.dmp

        Filesize

        8KB

      • memory/684-4-0x00007FFB7EBF0000-0x00007FFB7F6B2000-memory.dmp

        Filesize

        10.8MB