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Analysis

  • max time kernel
    45s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    24/11/2022, 04:32

General

  • Target

    fa2c2a36f73c98508cf406f012a6a2217e4611fb2d22e1ee01998abd2fb2396c.exe

  • Size

    1.1MB

  • MD5

    11c20f0a2f97d615cb9ddd634c04086d

  • SHA1

    9296c3f962e8078fd9fbfa775a688995d0fd9e25

  • SHA256

    fa2c2a36f73c98508cf406f012a6a2217e4611fb2d22e1ee01998abd2fb2396c

  • SHA512

    57fb963592fe1f2d0fea3aeb5d93cccbdc61136cdf3b8e37fab362ce782493043f974216ade6b807a86e50e431194859768afcdf367a448ad8e3c9bc1dc1ea52

  • SSDEEP

    12288:zH7Wcjdc/r2sxxiPGGAOOPSXDV8ClgVYhX5FSsf8Q66oIWr69oGE15jSsFZyoop3:zbCj2sObHtqQ4Q66DssoRNFZyopgX

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 6 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • Nirsoft 2 IoCs
  • UPX packed file 9 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fa2c2a36f73c98508cf406f012a6a2217e4611fb2d22e1ee01998abd2fb2396c.exe
    "C:\Users\Admin\AppData\Local\Temp\fa2c2a36f73c98508cf406f012a6a2217e4611fb2d22e1ee01998abd2fb2396c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Users\Admin\AppData\Local\Temp\fa2c2a36f73c98508cf406f012a6a2217e4611fb2d22e1ee01998abd2fb2396c.exe
      "C:\Users\Admin\AppData\Local\Temp\fa2c2a36f73c98508cf406f012a6a2217e4611fb2d22e1ee01998abd2fb2396c.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1152
      • C:\Users\Admin\AppData\Local\Temp\fa2c2a36f73c98508cf406f012a6a2217e4611fb2d22e1ee01998abd2fb2396c.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\2M3SWSSYf0.ini"
        3⤵
          PID:1544
        • C:\Users\Admin\AppData\Local\Temp\fa2c2a36f73c98508cf406f012a6a2217e4611fb2d22e1ee01998abd2fb2396c.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\wPOHId6Ak9.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:1100

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\2M3SWSSYf0.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/1100-82-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1100-81-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1100-80-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1100-76-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1152-60-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1152-58-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1152-84-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1152-83-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1152-71-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1152-55-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1152-56-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1492-54-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

      Filesize

      8KB

    • memory/1544-65-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1544-73-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1544-72-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1544-70-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1544-69-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB