Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-12-2023 20:34

General

  • Target

    03480b94e38f7a2fde39371f0648528c.dll

  • Size

    203KB

  • MD5

    03480b94e38f7a2fde39371f0648528c

  • SHA1

    d2c9f0db932ab17d229c1120b2f8ae6b0eb07c87

  • SHA256

    5f5bfcc74dc59b721dc77961f9991a198579c1afe3d7ed53c2aa7709c7dc7e77

  • SHA512

    8b92eeb84701f4e087aae67675da7844a0b2ea41cf3186292fd329743d1bf22ab21de4d2b6698bcbaa45265b7e04986391acd2ded77b6bbceef691aec2ab14d6

  • SSDEEP

    3072:kxgAXcv/vdtHg6wMTY70clAQGDruE1LTFtynNdFOS2f328mW22d1:kxjS/Vtg0lLDacTWFyfz

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\03480b94e38f7a2fde39371f0648528c.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:528
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\03480b94e38f7a2fde39371f0648528c.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:3188

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Windows\zuoyu16.ini

    Filesize

    40B

    MD5

    2f252db48a212a83dc16ee89c0bd95c3

    SHA1

    a4dfdf31b25da5816abfc95f3187cacee791507f

    SHA256

    501698dc94fa70b9ba9368170b2ebcdcc1263d7b5ebe639b4556cadc3516f460

    SHA512

    0ebec3d15da6866e2987af09cef76ae880a80509b4b5c778fa6ffc054036e8cbb883151c76c8dfb90960a72a67c0dc3da82ee71c22888be2a9b981ef4048fd25