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Analysis

  • max time kernel
    49s
  • max time network
    55s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/01/2024, 21:45

General

  • Target

    der.jar

  • Size

    1KB

  • MD5

    d6c77989399c2f6afc7ae8c7b0246988

  • SHA1

    9cada7fd1d13d04f72293fb56c2c4c599cf0b684

  • SHA256

    f3e0a6e17eeda07acb7520a9dc68018ec070999042895e2e10dea6d60ff1d5b8

  • SHA512

    0be1589227862eac0d591d7abb7ea644fd1ddadc2bad809c7d97b17a71cca205279839651cc2d6bb96d2002944db7192d0f9c8eba920cce39476fe2473530c4c

Score
7/10

Malware Config

Signatures

  • Modifies file permissions 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\der.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1604
    • C:\Windows\system32\icacls.exe
      C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
      2⤵
      • Modifies file permissions
      PID:1932
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4024

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

      Filesize

      46B

      MD5

      eb34db097b7de6fe774548fac31727ce

      SHA1

      a8f6ffc31c606d2da088ad8f9e4fcae897291394

      SHA256

      344b85f4d9ae60bc69e131271e34847694fc1eb69845c9161e580ecf045374fb

      SHA512

      953f16715eea19462ffeac562fae8d08a5f5d78aa1de5e26ccdf7ba735f2d7cc96ac072c3c243baac589b3dc537f88188a30a0069386101abeb312fcf2a44882

    • memory/1604-4-0x0000013A5E1A0000-0x0000013A5F1A0000-memory.dmp

      Filesize

      16.0MB

    • memory/1604-11-0x0000013A5C880000-0x0000013A5C881000-memory.dmp

      Filesize

      4KB

    • memory/1604-14-0x0000013A5C880000-0x0000013A5C881000-memory.dmp

      Filesize

      4KB