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Analysis

  • max time kernel
    145s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04/06/2024, 12:41

General

  • Target

    B2856B11FF23D35DA2C9C906C61781BA_purchaseorder.jar

  • Size

    47KB

  • MD5

    b2856b11ff23d35da2c9c906c61781ba

  • SHA1

    fcce5d47e80051f617291c7f0fe53e5f3249f56c

  • SHA256

    75ff23be22ed5a003fde654d37d1b423e6353ea2e58adfcb8405a18dcbc951f6

  • SHA512

    b486c3aaffa312d53194238213f2e460281eff4cddaff22f8830654398c9b3abd3ebf8cd6a3452bbd3201f3a1db2222f071c07dfc4d65fa357d989db45b7b554

  • SSDEEP

    768:7nnfQxxfmEp1g/mSIdgVAhJw5UYIFqRTyNaFU1Gfo8XFJkFoesEVyY75+:83mEEeZdgtCYGJ0ouLkFoebo

Score
8/10

Malware Config

Signatures

  • Sets file execution options in registry 2 TTPs 10 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • Modifies registry key 1 TTPs 2 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Windows\system32\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\B2856B11FF23D35DA2C9C906C61781BA_purchaseorder.jar
    1⤵
    • Drops desktop.ini file(s)
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Windows\system32\reg.exe
      reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v win32 /t REG_SZ /d "\"C:\Program Files\Java\jre7\bin\javaw.exe\" -jar \"C:\Users\Admin\AppData\Roaming\Sys32\Windows.jar.txt\"" /f
      2⤵
      • Adds Run key to start application
      • Modifies registry key
      PID:2524
    • C:\Windows\system32\attrib.exe
      attrib +s +h +r "C:\Users\Admin\AppData\Roaming\Sys32\*.*"
      2⤵
      • Sets file to hidden
      • Drops desktop.ini file(s)
      • Views/modifies file attributes
      PID:2444
    • C:\Windows\system32\attrib.exe
      attrib +s +h +r "C:\Users\Admin\AppData\Roaming\Sys32"
      2⤵
      • Sets file to hidden
      • Views/modifies file attributes
      PID:2436
    • C:\Program Files\Java\jre7\bin\javaw.exe
      "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\Sys32\Windows.jar.txt"
      2⤵
      • Drops file in Windows directory
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2456
      • C:\Windows\system32\reg.exe
        reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v win32 /t REG_SZ /d "\"C:\Program Files\Java\jre7\bin\javaw.exe\" -jar \"C:\Users\Admin\AppData\Roaming\Sys32\Windows.jar.txt\"" /f
        3⤵
        • Adds Run key to start application
        • Modifies registry key
        PID:1364
      • C:\Windows\system32\cmd.exe
        cmd.exe /c regedit /s C:\Users\Admin\AppData\Local\Temp\TaskNetworkGathor442590722461171175.reg
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:112
        • C:\Windows\regedit.exe
          regedit /s C:\Users\Admin\AppData\Local\Temp\TaskNetworkGathor442590722461171175.reg
          4⤵
          • Sets file execution options in registry
          • Runs .reg file with regedit
          PID:1588

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\TaskNetworkGathor442590722461171175.reg

    Filesize

    719B

    MD5

    311af3b9a52ffc58f46ad83afb1e93b6

    SHA1

    031e8b46cce34a788841c709a2f12de599ec5970

    SHA256

    2931fbf7795f4a215bff8b59fc53e035bc6c31a5294ce9bd5436343885599219

    SHA512

    8e7d3ef1836b94bd9b9066bd264a7651b5f8ecaffaa757e0167b056ec0bbcc3059f3a9e1f563c4762ad5299ecc65b4766b6a3fcdcb4533cac90a2cc460a23150

  • C:\Users\Admin\AppData\Roaming\Sys32\Desktop.ini

    Filesize

    63B

    MD5

    e783bdd20a976eaeaae1ff4624487420

    SHA1

    c2a44fab9df00b3e11582546b16612333c2f9286

    SHA256

    2f65fa9c7ed712f493782abf91467f869419a2f8b5adf23b44019c08190fa3f3

    SHA512

    8c883678e4625ef44f4885b8c6d7485196774f9cb0b9eee7dd18711749bcae474163df9965effcd13ecd1a33cd7265010c152f8504d6013e4f4d85d68a901a80

  • C:\Users\Admin\AppData\Roaming\Sys32\Windows.jar.txt

    Filesize

    47KB

    MD5

    b2856b11ff23d35da2c9c906c61781ba

    SHA1

    fcce5d47e80051f617291c7f0fe53e5f3249f56c

    SHA256

    75ff23be22ed5a003fde654d37d1b423e6353ea2e58adfcb8405a18dcbc951f6

    SHA512

    b486c3aaffa312d53194238213f2e460281eff4cddaff22f8830654398c9b3abd3ebf8cd6a3452bbd3201f3a1db2222f071c07dfc4d65fa357d989db45b7b554

  • memory/2272-2-0x00000000025B0000-0x0000000002820000-memory.dmp

    Filesize

    2.4MB

  • memory/2272-12-0x0000000001C70000-0x0000000001C71000-memory.dmp

    Filesize

    4KB

  • memory/2272-39-0x0000000001C70000-0x0000000001C71000-memory.dmp

    Filesize

    4KB

  • memory/2272-42-0x00000000025B0000-0x0000000002820000-memory.dmp

    Filesize

    2.4MB

  • memory/2456-51-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB

  • memory/2456-43-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB

  • memory/2456-31-0x0000000002720000-0x0000000002990000-memory.dmp

    Filesize

    2.4MB

  • memory/2456-58-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB

  • memory/2456-60-0x0000000002720000-0x0000000002990000-memory.dmp

    Filesize

    2.4MB

  • memory/2456-64-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB

  • memory/2456-66-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB

  • memory/2456-67-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB

  • memory/2456-83-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB

  • memory/2456-87-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB

  • memory/2456-93-0x0000000000130000-0x0000000000131000-memory.dmp

    Filesize

    4KB