Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-03-2024 02:19

General

  • Target

    5f8603a6cb67a35e012e5ed12e8b5c54a2a673f7918588c520c001651471cdb6.exe

  • Size

    6KB

  • MD5

    8d7d770b43856e2c4271edadbf377aa0

  • SHA1

    293eb3321f82b44015f3703ba8692bb7c356d402

  • SHA256

    5f8603a6cb67a35e012e5ed12e8b5c54a2a673f7918588c520c001651471cdb6

  • SHA512

    2f1294d2f1c6196a38e17630060879445811db848d960000c033ca1e814127d12ea6d8454eaafbe2fd3bb801bb43f60dab6a0abc85c6967ea6e69aa30e4f47f5

  • SSDEEP

    96:WXy/CoDTM46384crGZgOOBo4NnBHFITAIl0tuKlqlzNtR:v/ConM5s4crG6nW4z+uqfv

Malware Config

Extracted

Family

purecrypter

C2

https://taastruck.vn/Cgbfxni.mp3

Signatures

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5f8603a6cb67a35e012e5ed12e8b5c54a2a673f7918588c520c001651471cdb6.exe
    "C:\Users\Admin\AppData\Local\Temp\5f8603a6cb67a35e012e5ed12e8b5c54a2a673f7918588c520c001651471cdb6.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3172
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3172 -s 1568
      2⤵
      • Program crash
      PID:3440
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3172 -ip 3172
    1⤵
      PID:3928

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3172-0-0x0000000000540000-0x0000000000548000-memory.dmp

      Filesize

      32KB

    • memory/3172-1-0x00000000750C0000-0x0000000075870000-memory.dmp

      Filesize

      7.7MB

    • memory/3172-2-0x0000000004F70000-0x0000000004F80000-memory.dmp

      Filesize

      64KB

    • memory/3172-3-0x00000000750C0000-0x0000000075870000-memory.dmp

      Filesize

      7.7MB