Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    15-06-2024 06:58

General

  • Target

    ShellExtHelper.dll

  • Size

    813KB

  • MD5

    317cde0c2ff31733e48738579d314464

  • SHA1

    f9b18eaa33fbe97f02ed0bfe8820cec7f601ca53

  • SHA256

    f301edbc1abba01868af91b54ffcb266f5f3047338b5cef76afdc0d9c2133db8

  • SHA512

    2aee9d1f6e91564748901c027a01cf9f8208161fb090c9e4c0144f96d4593b083759f23941bc89b121632958378fc746da92a1b5f5b3dd924b934aeacd1e3057

  • SSDEEP

    12288:szGugz+e2QcA6RTr9vc1t3bi0DP88bYcaZZt8+VCs6ocMeP/Cf:Ugzp2gcT+1pi0nlcWFW

Score
7/10

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 2 IoCs
  • Modifies registry class 35 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ShellExtHelper.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2436
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\ShellExtHelper.dll
      2⤵
      • Modifies system executable filetype association
      • Modifies registry class
      PID:2424

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Privilege Escalation

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Defense Evasion

Modify Registry

1
T1112

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Downloads