Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/03/2024, 01:08

General

  • Target
    26934dec6c39f3b5fda01f315a3c36c78556ce61f3bde7dd3f3877d0dde11041.jar
  • Size 907KB
  • Sample240304-bhp65sdf7s
  • SHA256 26934dec6c39f3b5fda01f315a3c36c78556ce61f3bde7dd3f3877d0dde11041
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Drops file in Program Files directory 24 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\26934dec6c39f3b5fda01f315a3c36c78556ce61f3bde7dd3f3877d0dde11041.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:212
    • 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:3880
    • C:\Windows\SYSTEM32\wscript.exe
      wscript C:\Users\Admin\fvfvdvihbf.js
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:3884
      • C:\Program Files\Java\jre-1.8\bin\javaw.exe
        "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\enxhcmkgoe.txt"
        3⤵
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4868
        • C:\Program Files\Java\jre-1.8\bin\java.exe
          "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar C:\Users\Admin\AppData\Local\Temp\_0.759747982961223747654369752713714.class
          4⤵
          • Drops file in Program Files directory
          PID:884

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        3903daac9bc4a3b7.timestamp

        • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
        • Size 46B
        • SHA256 050d5770da3d4e08ca1e92fdeea5bf13fd444d4c9a6f6e22b144765fad868025
        • MD5 SHA1 SHA512

        3903daac9bc4a3b7.timestamp

        • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
        • Size 46B
        • SHA256 6185000c7bf12a2f172d7d546310327074c569258ca7958ecd453de7a1e45bde
        • MD5 SHA1 SHA512

        _0.759747982961223747654369752713714.class

        • Path C:\Users\Admin\AppData\Local\Temp\_0.759747982961223747654369752713714.class
        • Size 241KB
        • SHA256 97d585b6aff62fb4e43e7e6a5f816dcd7a14be11a88b109a9ba9e8cd4c456eb9
        • MD5 SHA1 SHA512 SSDEEP

        83aa4cc77f591dfc2374580bbd95f6ba_8a5f3b39-6e68-4fc5-bbb1-a0dd77d899e9

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-275798769-4264537674-1142822080-1000\83aa4cc77f591dfc2374580bbd95f6ba_8a5f3b39-6e68-4fc5-bbb1-a0dd77d899e9
        • Size 45B
        • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
        • MD5 SHA1 SHA512

        enxhcmkgoe.txt

        • Path C:\Users\Admin\AppData\Roaming\enxhcmkgoe.txt
        • Size 473KB
        • SHA256 ad80dee52ee919b6cd939e9df62a4d48245739390490954163261c3230f105e7
        • MD5 SHA1 SHA512 SSDEEP

        fvfvdvihbf.js

        • Path C:\Users\Admin\fvfvdvihbf.js
        • Size 3.5MB
        • SHA256 4e23a2ee925d9f6a2a5fa575519f5053f1b079a836420adc387c99e4ef876bf8
        • MD5 SHA1 SHA512 SSDEEP

        memory/212-4-0x0000021512970000-0x0000021513970000-memory.dmp

        memory/212-15-0x0000021511170000-0x0000021511171000-memory.dmp

        memory/212-12-0x0000021511170000-0x0000021511171000-memory.dmp

        memory/884-91-0x000001B6DA260000-0x000001B6DB260000-memory.dmp

        memory/884-89-0x000001B6DA500000-0x000001B6DA510000-memory.dmp

        memory/884-40-0x000001B6DA260000-0x000001B6DB260000-memory.dmp

        memory/884-49-0x000001B6DA240000-0x000001B6DA241000-memory.dmp

        memory/884-84-0x000001B6DA510000-0x000001B6DA520000-memory.dmp

        memory/884-90-0x000001B6DA520000-0x000001B6DA530000-memory.dmp

        memory/884-87-0x000001B6DA4D0000-0x000001B6DA4E0000-memory.dmp

        memory/884-88-0x000001B6DA4F0000-0x000001B6DA500000-memory.dmp

        memory/4868-53-0x000002820D3F0000-0x000002820D3F1000-memory.dmp

        memory/4868-86-0x000002820D410000-0x000002820E410000-memory.dmp

        memory/4868-85-0x000002820D6D0000-0x000002820D6E0000-memory.dmp

        memory/4868-81-0x000002820D690000-0x000002820D6A0000-memory.dmp

        memory/4868-78-0x000002820D410000-0x000002820E410000-memory.dmp

        memory/4868-83-0x000002820D6B0000-0x000002820D6C0000-memory.dmp

        memory/4868-60-0x000002820D410000-0x000002820E410000-memory.dmp

        memory/4868-39-0x000002820D3F0000-0x000002820D3F1000-memory.dmp

        memory/4868-23-0x000002820D410000-0x000002820E410000-memory.dmp