Analysis

  • max time kernel
    90s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-01-2023 01:57

General

  • Target

    fbf183552d7edf8226f1a41c51e3bf90afd5d4e519f4a8088a153fb300fd7681.dll

  • Size

    526KB

  • MD5

    51e8157abf646d4f2938208509a91960

  • SHA1

    485de69d342bf1f65fc7c17f512faee487092976

  • SHA256

    fbf183552d7edf8226f1a41c51e3bf90afd5d4e519f4a8088a153fb300fd7681

  • SHA512

    f99a128199d0c363a9eb65488e71f8e9f234a079a7b659c5e9d077f31077a624f583d60150a59eaebfa6bef67194cbc334f74dcdfacffc65d10f37051343f09b

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0Y:jDgtfRQUHPw06MoV2nwTBlhm8Q

Score
10/10

Malware Config

Signatures

  • Yunsip

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\fbf183552d7edf8226f1a41c51e3bf90afd5d4e519f4a8088a153fb300fd7681.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5068
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\fbf183552d7edf8226f1a41c51e3bf90afd5d4e519f4a8088a153fb300fd7681.dll,#1
      2⤵
        PID:2536

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/2536-132-0x0000000000000000-mapping.dmp