Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13-02-2024 01:59

General

  • Target

    3a6666e2820fa42ca7b386d7c1029637a717f01c8c550474a0c05a48df3276c6.exe

  • Size

    5KB

  • MD5

    c034a0b410854a329c4c6518049778e3

  • SHA1

    8d07e1fc68f288871193f3097de62dd5e71c338c

  • SHA256

    3a6666e2820fa42ca7b386d7c1029637a717f01c8c550474a0c05a48df3276c6

  • SHA512

    093bfcd6b72fbf8d514b42e62ac49542d188a83414d4a55f9357dd92431da95ab3e6113349c183eeade40ebd6b46dc3ede3687fba178fdc0267a0a760e03ae80

  • SSDEEP

    48:6RT+77Uf77v3JfzwDtqYQKsF3YJAOakTTK8L+psVtiOl0BqFSpfbNtm:7gz7Q/4oJ9RTCjzNt

Malware Config

Extracted

Family

purecrypter

C2

https://taastruck.vn/Pkzzw.pdf

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\3a6666e2820fa42ca7b386d7c1029637a717f01c8c550474a0c05a48df3276c6.exe
    "C:\Users\Admin\AppData\Local\Temp\3a6666e2820fa42ca7b386d7c1029637a717f01c8c550474a0c05a48df3276c6.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2180 -s 1076
      2⤵
      • Program crash
      PID:2460

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2180-0-0x00000000012D0000-0x00000000012D8000-memory.dmp

    Filesize

    32KB

  • memory/2180-1-0x00000000746D0000-0x0000000074DBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2180-2-0x0000000004F50000-0x0000000004F90000-memory.dmp

    Filesize

    256KB

  • memory/2180-3-0x00000000746D0000-0x0000000074DBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2180-4-0x0000000004F50000-0x0000000004F90000-memory.dmp

    Filesize

    256KB