Analysis

  • max time kernel
    76s
  • max time network
    102s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    14-02-2023 16:59

General

  • Target

    MultiMC/zlib1.dll

  • Size

    105KB

  • MD5

    b8a9e91134e7c89440a0f95470d5e47b

  • SHA1

    3cbcee30fc0a7e9807931bc0dafceb627042bfc9

  • SHA256

    42967a768f341d9ce5174eb38a4d63754c3c41739e7d88f4e39cd7354c1fac71

  • SHA512

    e8583ea94b9d1321889359317e367abc88e90e96d0d9243258244a527ffa2b13ab97d0787693ca328960ceb934ea11eefd14abafd640a654473c26e420d2ec54

  • SSDEEP

    3072:Y15jVjUqf9CtXH/4UghkGTBfmJyqLEC9BRY:Yf81wpTB+Jyqb

Score
3/10

Malware Config

Signatures

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\MultiMC\zlib1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\MultiMC\zlib1.dll,#1
      2⤵
        PID:3524
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3524 -s 620
          3⤵
          • Program crash
          PID:4624

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3524-120-0x0000000000000000-mapping.dmp

    • memory/3524-121-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-122-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-123-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-124-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-125-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-126-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-128-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-130-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-133-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-134-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-135-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-137-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-136-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-138-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-141-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-140-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-142-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-144-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-145-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-147-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-149-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-151-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-150-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-148-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-152-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-154-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-156-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-155-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-158-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-157-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-153-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-146-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-143-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-139-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-132-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-131-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-129-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-127-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-160-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-159-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-161-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-162-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB

    • memory/3524-163-0x00000000771E0000-0x000000007736E000-memory.dmp

      Filesize

      1.6MB