Analysis

  • max time kernel
    227s
  • max time network
    337s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 12:56

General

  • Target

    31a62a4c480d1d124e3c23e6419806a154573381fdc7b9ab6573ac7ea405b139.dll

  • Size

    364KB

  • MD5

    08f94b7ef14f1afa30170c57e3a604a0

  • SHA1

    cf77d2b481e37c8c7393c53c80f652184e6a3259

  • SHA256

    31a62a4c480d1d124e3c23e6419806a154573381fdc7b9ab6573ac7ea405b139

  • SHA512

    b81d6c5d0dd3ccc3984406c9543e1d12683f3c205a54c7a8ee5d7625f4269468f00939e2aff8b2be2892ca8db5b8de9bdd42121da3d2089b2b806f02196270f5

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0k:jDgtfRQUHPw06MoV2nwTBlhm8c

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\31a62a4c480d1d124e3c23e6419806a154573381fdc7b9ab6573ac7ea405b139.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1028
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\31a62a4c480d1d124e3c23e6419806a154573381fdc7b9ab6573ac7ea405b139.dll,#1
      2⤵
        PID:2036

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/2036-55-0x0000000075E01000-0x0000000075E03000-memory.dmp

      Filesize

      8KB