Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-11-2022 12:51

General

  • Target

    b2990b163771e38faa4d79a7590a0887e088a8ad89f793660983c29ce42cb6cf.dll

  • Size

    367KB

  • MD5

    6c59f228c1dda5c7c428dd8c4438a4b0

  • SHA1

    9a4fe04865efbdf185fcaefd0cb0b8193f51f18a

  • SHA256

    b2990b163771e38faa4d79a7590a0887e088a8ad89f793660983c29ce42cb6cf

  • SHA512

    00d420af28973f4c4b7a2edd82b40b3dd1a8e91f2637df735944c46bb84587872cbedf2c709ceae9666b735039c313a7449be5f9acd25b0bf22dba1343ad6c44

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q09:jDgtfRQUHPw06MoV2nwTBlhm8l

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\b2990b163771e38faa4d79a7590a0887e088a8ad89f793660983c29ce42cb6cf.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4960
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2990b163771e38faa4d79a7590a0887e088a8ad89f793660983c29ce42cb6cf.dll,#1
      2⤵
        PID:4852

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/4852-132-0x0000000000000000-mapping.dmp