Analysis

  • max time kernel
    47s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    21-10-2022 16:09

General

  • Target

    2fe8d2516d2bf0efe9a5d4ff731d05f165a7aa1e97cc19c680e2036b3a29613f.dll

  • Size

    946KB

  • MD5

    12455e1687e8cff4fa2f540b15d4d163

  • SHA1

    26897a20fb3a70f8e7f44775be45f64fce68785e

  • SHA256

    2fe8d2516d2bf0efe9a5d4ff731d05f165a7aa1e97cc19c680e2036b3a29613f

  • SHA512

    9f07ce957994f38d96856b632360f1cccab173cc447ac3b3d50c8dc1838622f201290ffd6d1bd83be71f3735c3005930fa1686905ad2fb5b108163e00769f137

  • SSDEEP

    3072:o6pU5Y1DXnbMn7Uzkop61/dAzV2O3XwTBftrm2YedGf3QKZDj:o6C5AXbMn7UI1FoV2gwTBlrIckPZ

Score
10/10

Malware Config

Signatures

  • Yunsip

    Remote backdoor which communicates with a C2 server to receive commands.

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\2fe8d2516d2bf0efe9a5d4ff731d05f165a7aa1e97cc19c680e2036b3a29613f.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\2fe8d2516d2bf0efe9a5d4ff731d05f165a7aa1e97cc19c680e2036b3a29613f.dll,#1
      2⤵
        PID:1672

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1672-54-0x0000000000000000-mapping.dmp

    • memory/1672-55-0x00000000757A1000-0x00000000757A3000-memory.dmp

      Filesize

      8KB