Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-06-2024 12:44

General

  • Target

    Doc000781102.exe

  • Size

    113KB

  • MD5

    c7e267629511f510ff5e8934ceb2f382

  • SHA1

    814753fa8f15d440e36abd22ce908125ad972730

  • SHA256

    0ca211901a9024dc07ca4973a6fe71813c5d58d468117169820d6ba91ca9f23d

  • SHA512

    be04cca9194d247e665d342c62e0f9d6e26ef596fc09b6ff148b568e54b682265eff366244448745cd85d7af7702bfad4798c281a459cb65025e6aadf2975868

  • SSDEEP

    1536:M3dFtO4xLk8u2qHlllllllOdQlwEn+glllllllllllllllllll5xw5lf:MtXFjtYwiVxw5lf

Malware Config

Extracted

Family

purecrypter

C2

http://78.111.67.189/cn/Pffmtfdozq.pdf

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\Doc000781102.exe
    "C:\Users\Admin\AppData\Local\Temp\Doc000781102.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4584
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 1620
      2⤵
      • Program crash
      PID:3912
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4584 -ip 4584
    1⤵
      PID:3328

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4584-0-0x000000007506E000-0x000000007506F000-memory.dmp

      Filesize

      4KB

    • memory/4584-1-0x0000000000B30000-0x0000000000B52000-memory.dmp

      Filesize

      136KB

    • memory/4584-2-0x00000000053E0000-0x0000000005472000-memory.dmp

      Filesize

      584KB

    • memory/4584-3-0x0000000075060000-0x0000000075810000-memory.dmp

      Filesize

      7.7MB

    • memory/4584-4-0x0000000007A60000-0x0000000007C8A000-memory.dmp

      Filesize

      2.2MB

    • memory/4584-5-0x0000000006C80000-0x0000000007224000-memory.dmp

      Filesize

      5.6MB

    • memory/4584-21-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-23-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-31-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-41-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-57-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-69-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-67-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-65-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-63-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-61-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-59-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-53-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-51-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-49-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-47-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-45-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-43-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-39-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-37-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-35-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-55-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-33-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-29-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-27-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-25-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-19-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-17-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-15-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-13-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-11-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-7-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-9-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-6-0x0000000007A60000-0x0000000007C85000-memory.dmp

      Filesize

      2.1MB

    • memory/4584-4892-0x0000000075060000-0x0000000075810000-memory.dmp

      Filesize

      7.7MB

    • memory/4584-4893-0x0000000075060000-0x0000000075810000-memory.dmp

      Filesize

      7.7MB