Analysis

  • max time kernel
    151s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2022, 01:28

General

  • Target
    2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06.dll
  • Size 160KB
  • Sample221003-bv6pnacbdn
  • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 6 IoCs
  • UPX packed file 11 IoCs

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

  • Loads dropped DLL 8 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Program Files directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer Protected Mode 1 TTPs 5 IoCs
  • Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 29 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3364
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:804
      • C:\PROGRA~3\rundll32.exe
        C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jjetr.dat,FG00
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:1792
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jjetr.dat,FG01
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:5040
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jjetr.dat,FG02
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          PID:4944
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jjetr.dat,FG03
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Modifies Internet Explorer Protected Mode
          • Modifies Internet Explorer Protected Mode Banner
          • Modifies Internet Explorer settings
          • Suspicious use of WriteProcessMemory
          PID:4784
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4976
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4976 CREDAT:17410 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4752
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jjetr.dat,FG04
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4240
        • C:\PROGRA~3\rundll32.exe
          C:\PROGRA~3\rundll32.exe C:\PROGRA~3\jjetr.dat,FG06
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:384

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        jjetr.dat

        • Path C:\PROGRA~3\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        rtejj.pad

        • Path C:\PROGRA~3\rtejj.pad
        • Size 90.6MB
        • SHA256 96cd41c5499d163dcc18807184e8cce418c7b7a0abf6af4584025731bd0de7ed
        • MD5 SHA1 SHA512 SSDEEP

        rtejj.pad

        • Path C:\PROGRA~3\rtejj.pad
        • Size 90.6MB
        • SHA256 ea940ca5e46955b93ae57278d099c2fca981b61c7c6e3325f92dae4f6ec1a1f1
        • MD5 SHA1 SHA512 SSDEEP

        rundll32.exe

        • Path C:\PROGRA~3\rundll32.exe
        • Size 60KB
        • SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
        • MD5 SHA1 SHA512 SSDEEP

        jjetr.dat

        • Path C:\ProgramData\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        jjetr.dat

        • Path C:\ProgramData\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        jjetr.dat

        • Path C:\ProgramData\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        jjetr.dat

        • Path C:\ProgramData\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        jjetr.dat

        • Path C:\ProgramData\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        jjetr.dat

        • Path C:\ProgramData\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        jjetr.dat

        • Path C:\ProgramData\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        jjetr.dat

        • Path C:\ProgramData\jjetr.dat
        • Size 160KB
        • SHA256 2a284fbc15645b0779d564a0ae13e5f62a305f55fb9f8dcfee1ec0e4e0ad5f06
        • MD5 SHA1 SHA512 SSDEEP

        rundll32.exe

        • Path C:\ProgramData\rundll32.exe
        • Size 60KB
        • SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
        • MD5 SHA1 SHA512 SSDEEP

        rundll32.exe

        • Path C:\ProgramData\rundll32.exe
        • Size 60KB
        • SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
        • MD5 SHA1 SHA512 SSDEEP

        rundll32.exe

        • Path C:\ProgramData\rundll32.exe
        • Size 60KB
        • SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
        • MD5 SHA1 SHA512 SSDEEP

        rundll32.exe

        • Path C:\ProgramData\rundll32.exe
        • Size 60KB
        • SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
        • MD5 SHA1 SHA512 SSDEEP

        rundll32.exe

        • Path C:\ProgramData\rundll32.exe
        • Size 60KB
        • SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
        • MD5 SHA1 SHA512 SSDEEP

        rundll32.exe

        • Path C:\ProgramData\rundll32.exe
        • Size 60KB
        • SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
        • MD5 SHA1 SHA512 SSDEEP

        7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Size 471B
        • SHA256 f238404cc643efddef8ff430f128cdc8ec1513969eaac24b5e5bce81248a91e7
        • MD5 SHA1 SHA512

        7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Size 404B
        • SHA256 d34237ed64b74c6ba8b73db36232b6f34a0a98df2dceb192d817df806228bc75
        • MD5 SHA1 SHA512

        memory/384-167-0x0000000075000000-0x000000007503D000-memory.dmp

        memory/384-170-0x0000000075000000-0x000000007503D000-memory.dmp

        memory/804-140-0x00000000031C0000-0x00000000031FD000-memory.dmp

        memory/804-139-0x0000000075000000-0x000000007503D000-memory.dmp

        memory/804-163-0x00000000031C0000-0x00000000031FD000-memory.dmp

        memory/804-138-0x00000000031C1000-0x00000000031C4000-memory.dmp

        memory/1792-147-0x0000000075000000-0x000000007503D000-memory.dmp

        memory/1792-169-0x0000000075000000-0x000000007503D000-memory.dmp

        memory/4240-168-0x0000000075000000-0x000000007503D000-memory.dmp

        memory/4240-171-0x0000000075000000-0x000000007503D000-memory.dmp

        memory/4784-166-0x0000000075000000-0x000000007503D000-memory.dmp

        memory/5040-165-0x0000000075000000-0x000000007503D000-memory.dmp