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Analysis

  • max time kernel
    140s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13/05/2024, 11:56

General

  • Target

    office2019pjb_9435/office2019pjb/OTool/files/Thunder/xldl.dll

  • Size

    106KB

  • MD5

    b700bd2daf84e4dbbcad96221a772d6b

  • SHA1

    b57cab2d8cfc733d6aacc61a39ce5564db0f7b3b

  • SHA256

    63ae9dd4a504261591f06bd9457d07629155241df615bd46a0fb48e76c5e9d56

  • SHA512

    d573e7b2863053e2b4d81a4a89dcbee83fc079403ab36c54e3e0904a3b5d61d1aff0b8bb32d164e496f8425bf8e40e803480c694506e6e156434b8350b736a10

  • SSDEEP

    3072:/WcKtZ5jVYBrJfbUfCoIydGHoqXUWIoutMsvmd:/WPnfYBrJWIydGHotoSPC

Score
7/10
upx

Malware Config

Signatures

  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\office2019pjb_9435\office2019pjb\OTool\files\Thunder\xldl.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\office2019pjb_9435\office2019pjb\OTool\files\Thunder\xldl.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3048 -s 232
        3⤵
        • Program crash
        PID:2948

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/3048-0-0x0000000010000000-0x000000001004D000-memory.dmp

    Filesize

    308KB

  • memory/3048-1-0x0000000010000000-0x000000001004D000-memory.dmp

    Filesize

    308KB