Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2022 21:59

General

  • Target

    bf88bc7c73bfc7ecd62b2b0e03233da48569268ffbee5fbd4cbbe0f4cf44e7c1.dll

  • Size

    346KB

  • MD5

    5fafc528becaaf8b3413bf79434d3884

  • SHA1

    1c91f5f3ca1eb0d927e6658009abdf718ce6bdbc

  • SHA256

    bf88bc7c73bfc7ecd62b2b0e03233da48569268ffbee5fbd4cbbe0f4cf44e7c1

  • SHA512

    8b8d4eee6ee30fef0405975bc7fc1f0b44a9b1da3e3edf74971b733f516bd704dbd60bf0886e9ecec0ff925bc853e25ab1eb80b7f3be46362840415bc16149c9

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0z:jDgtfRQUHPw06MoV2nwTBlhm8b

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\bf88bc7c73bfc7ecd62b2b0e03233da48569268ffbee5fbd4cbbe0f4cf44e7c1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf88bc7c73bfc7ecd62b2b0e03233da48569268ffbee5fbd4cbbe0f4cf44e7c1.dll,#1
      2⤵
        PID:3536

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads