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

  • MD5

    d40448b5ac56cf8f2a4bbea8d22982c2

  • SHA1

    ad405a4f3ea892a80b696f7460de70bbb6b082f8

  • SHA256

    d97bdbb4ad01f8873a141e7544160d070469b0c6865b823fec42184315b923cc

  • SHA512

    be9b6ffda6ebee70baa79bab24129150895bf5d06f0d634a1099e129bd63396c2f73e1c82115b6ca37df5aa5c406e3d1df2932e9a8dbeb927aacda727675082d

  • SSDEEP

    384:IiZHmh0O/Lrw+Ke8QEoDeJisnDPnFw5sglcMhQM0u+GrCPHFYgMSXA:IgGhHzr8e8B1PnFusmcDCXrCPqEXA

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

      Filesize

      120KB

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

      Filesize

      5.6MB

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

      Filesize

      584KB

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

      Filesize

      64KB