Analysis

  • max time kernel
    96s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/02/2023, 01:44

General

  • Target
    d97bdbb4ad01f8873a141e7544160d070469b0c6865b823fec42184315b923cc.exe
  • Size 92KB
  • Sample230225-b5tg3sbf98
  • SHA256 d97bdbb4ad01f8873a141e7544160d070469b0c6865b823fec42184315b923cc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • purecrypter

C2
  • https://ashaambulanceservice.com/Vuzbri.bmp

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\d97bdbb4ad01f8873a141e7544160d070469b0c6865b823fec42184315b923cc.exe
    "C:\Users\Admin\AppData\Local\Temp\d97bdbb4ad01f8873a141e7544160d070469b0c6865b823fec42184315b923cc.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3820
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3820 -s 2000
      2⤵
      • Program crash
      PID:3680
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3820 -ip 3820
    1⤵
      PID:1224

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/3820-133-0x0000000000030000-0x000000000004E000-memory.dmp

          memory/3820-134-0x0000000005030000-0x00000000055D4000-memory.dmp

          memory/3820-135-0x0000000004A80000-0x0000000004B12000-memory.dmp

          memory/3820-136-0x00000000049F0000-0x0000000004A00000-memory.dmp