Analysis

  • max time kernel
    91s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-10-2022 19:33

General

  • Target

    898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d.dll

  • Size

    225KB

  • MD5

    26013a3a43803aa4c98a86d279a11471

  • SHA1

    4a1ff2844494b6618c8e431d778d84dfa67f4a21

  • SHA256

    898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d

  • SHA512

    5a2187865e59aace472ac8596304ee731c86a41b81abe942e647558a29a9194e4e54aecb1582086cc88045f09504533b57771c62bbead36b63c2683e390576bb

  • SSDEEP

    3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0W:jDgtfRQUHPw06MoV2nwTBlhm8+

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\898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3420
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\898e8b76627caa38ed1194364ce25266defdb7c1660c2e694ad90cedb68d5d4d.dll,#1
      2⤵
        PID:5024

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/5024-135-0x0000000000000000-mapping.dmp