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Analysis

  • max time kernel
    142s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/11/2023, 16:00

General

  • Target

    44bef2e9777216494d72005804aeb0db565d467ca68c1cb34be5e984f5768c71.dll

  • Size

    189KB

  • MD5

    bb47f696fcecf06265d90a3c5747a8b2

  • SHA1

    d154cf58a0f8ccdb309696c63fd8bf9740d55f8c

  • SHA256

    44bef2e9777216494d72005804aeb0db565d467ca68c1cb34be5e984f5768c71

  • SHA512

    ef77527b2b0637f047fdbf15ad11ee82ab16721da45491a0988dce14985ac5b49f0a1b1dac2bb5558024b9f36145436795ccbcb5e0ea0f8be2ed5fb0f7f73162

  • SSDEEP

    3072:FjB3UkpquSNj39ZwjqgeUl1MvZv79m/wKtGlKPgbY+CJyUKLXOLwbMPMZdpIH:tB3UkpquSNzLwxeWsZj9WuGTyUGOcbM/

Score
7/10
upx

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\44bef2e9777216494d72005804aeb0db565d467ca68c1cb34be5e984f5768c71.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3396
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\44bef2e9777216494d72005804aeb0db565d467ca68c1cb34be5e984f5768c71.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:616
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        PID:4964
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 264
          4⤵
          • Program crash
          PID:2296
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 4964 -ip 4964
    1⤵
      PID:4376

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • C:\Windows\SysWOW64\rundll32mgr.exe

      Filesize

      105KB

      MD5

      dfb5daabb95dcfad1a5faf9ab1437076

      SHA1

      4a199569a9b52911bee7fb19ab80570cc5ff9ed1

      SHA256

      54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

      SHA512

      5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

    • C:\Windows\SysWOW64\rundll32mgr.exe

      Filesize

      105KB

      MD5

      dfb5daabb95dcfad1a5faf9ab1437076

      SHA1

      4a199569a9b52911bee7fb19ab80570cc5ff9ed1

      SHA256

      54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

      SHA512

      5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

    • memory/616-1-0x0000000074D30000-0x0000000074D64000-memory.dmp

      Filesize

      208KB

    • memory/4964-5-0x0000000000400000-0x000000000045B000-memory.dmp

      Filesize

      364KB

    • memory/4964-6-0x0000000000580000-0x0000000000581000-memory.dmp

      Filesize

      4KB

    • memory/4964-7-0x0000000000400000-0x000000000045B000-memory.dmp

      Filesize

      364KB