Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-03-2024 15:49

General

  • Target

    $R1.dll

  • Size

    1.2MB

  • MD5

    104be7b21b09b5863ea03eb7c6c1298a

  • SHA1

    f87600bca12beef0396f19650f34587c2c80cdee

  • SHA256

    afe8c52bf5d96ad9b890477e1608e2f56f332a4e7bae449f68f6d47e4592b54b

  • SHA512

    339beaba14c9ee8b7277eba97d1d1af1ebb50bf59be4c3dc0f0aa02655c2ea0661738007b4c21642fb76b8c61edf6599208d4cc53b15b6a21eec6656f55eb5a1

  • SSDEEP

    24576:km1RvurA+BUOEbCdvB1Nb/StgBq/Nzd3nBkcTZT:SBTE/t5nBkcTF

Score
6/10

Malware Config

Signatures

  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Modifies registry class 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$R1.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2720
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\$R1.dll
      2⤵
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:312

Network

MITRE ATT&CK Enterprise v15

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Downloads