Analysis

  • max time kernel
    137s
  • max time network
    218s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    11-02-2023 17:19

General

  • Target

    MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe

  • Size

    23KB

  • MD5

    8531ba62c67d13ce3ad94bcd42bb2c00

  • SHA1

    a9cee94ac6fe7afd2f2647e08330ce47269c57d6

  • SHA256

    465a71fa9458ee9162610eae78424a2a3f75561af0a2ce10ab3e6afde10aa74c

  • SHA512

    a183e13a1c4231a702b7c560b69313684d08ffb46580cd3fbc3641e197560ee61d27ccd109ba457ceac33b62f1fed15a34d6fe0a67f3989b7bfe19f4e39f5c53

  • SSDEEP

    96:mHoxS1E/nqEnkpB0gJ2YGkLtUzVHEHtA6xQkVbR9x5YSGOomjfjw5aBZ7bBlHWFU:y1E/jSOVYrLtF/6ObR9xFyajGaBZzHz

Malware Config

Extracted

Family

purecrypter

C2

https://onedrive.live.com/download?cid=BD9480D014FE52E5&resid=BD9480D014FE52E5%21380&authkey=AITcidcD1qd3mdU

Signatures

  • PureCrypter

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

  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\MRF-D_009_21-AW-Deck-General-tools-sent-to-office-on07.02.2023-pdf.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:952
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 1728
      2⤵
      • Program crash
      PID:556

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/952-54-0x0000000000EA0000-0x0000000000EAC000-memory.dmp

    Filesize

    48KB

  • memory/952-55-0x0000000075D11000-0x0000000075D13000-memory.dmp

    Filesize

    8KB