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Analysis

  • max time kernel
    136s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/11/2022, 11:39

General

  • Target

    dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe

  • Size

    1015KB

  • MD5

    eeaad0018cda28981b2459b48280f8ee

  • SHA1

    12b7929a92a899c4f89ba036875838fc31bcb120

  • SHA256

    dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5

  • SHA512

    b925a80136d32fcd48b995da701c51c8d2acc26470b5ea0822826eb6cbaa43d6a33a6ec1bfeafc14f655b7c8631acb1b59b3acb8525b240daedf19447a67e0d3

  • SSDEEP

    12288:uaWzgMg7v3qnCiMErQohh0F4CCJ8lny/Qg8r69oGE15jSsFZyoopBWCD+z:ZaHMv6Corjqny/QgSsoRNFZyo5C2

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 4 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • Nirsoft 2 IoCs
  • UPX packed file 8 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 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe
    "C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4892
    • C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe
      "C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2652
      • C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\5LnDIzHofc.ini"
        3⤵
          PID:4412
        • C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\SXzWPhdNjN.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:4384

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\5LnDIzHofc.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • memory/2652-143-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2652-133-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2652-152-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2652-145-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4384-149-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/4384-147-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/4384-150-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/4384-151-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/4412-142-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/4412-141-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/4412-140-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/4412-138-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB