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Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/03/2024, 23:36

General

  • Target

    czity.exe

  • Size

    41KB

  • MD5

    f9787bb996642a620760f0344fc31cd1

  • SHA1

    e6b2baf658c3cd15b2d31e589bd09d1a768ad74a

  • SHA256

    932448e541f2105f522ae63d97d739f735252d627582f31fcd4de6552f1dba88

  • SHA512

    bab3790c428e855f20e6eb61121caa1f523eec57f5e26ef236d8aefff556c02396e9217e06ae097df15474955383e60da0b083bb8eaeabaa4357bfdc1a923b79

  • SSDEEP

    768:hscaIiIEI/gB1wtpuZce/WTj+KZKfgm3Ehzb:ec1yYgB0e/WTKF7Exb

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1221240997686542346/qOnbevQy2Ik14F7G1ihxYnFdeQ2Ac25ZyEfiNBV82LbwwYXuk1Bjseg1Wr8GUOBOZ29B

Signatures

  • Mercurial Grabber Stealer

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
  • Looks up external IP address via web service 3 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.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\czity.exe
    "C:\Users\Admin\AppData\Local\Temp\czity.exe"
    1⤵
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:3048
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:5036

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3048-0-0x00000000008A0000-0x00000000008B0000-memory.dmp

      Filesize

      64KB

    • memory/3048-1-0x00007FF87ACE0000-0x00007FF87B7A1000-memory.dmp

      Filesize

      10.8MB

    • memory/3048-4-0x00007FF87ACE0000-0x00007FF87B7A1000-memory.dmp

      Filesize

      10.8MB

    • memory/3048-5-0x000000001B380000-0x000000001B390000-memory.dmp

      Filesize

      64KB