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Analysis

  • max time kernel
    61s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28/11/2022, 18:53

General

  • Target

    dd42fa589c17688c69afb046241371cec15b8049aa06c53b0f27acc5af727c65.exe

  • Size

    1008KB

  • MD5

    d0d9e35c7366d20c4e2996600b5e32fb

  • SHA1

    b4f2b3bbffc7be2d643c3977c7ca864eed6ceb86

  • SHA256

    dd42fa589c17688c69afb046241371cec15b8049aa06c53b0f27acc5af727c65

  • SHA512

    7b0278294f08787fda49b366a535ba0bb9fd3a213d70b2afa6e03746e226a14602c02a13d2e275b9337187ecb31579e49067c6b5378c9b03a2b7f75586d854cf

  • SSDEEP

    24576:NP3tMh0BxZC6AXPtWskmkNbY1XQXUpTfkDXfJH:R3tMh0k7PPkmPAMjkzB

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 5 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.

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dd42fa589c17688c69afb046241371cec15b8049aa06c53b0f27acc5af727c65.exe
    "C:\Users\Admin\AppData\Local\Temp\dd42fa589c17688c69afb046241371cec15b8049aa06c53b0f27acc5af727c65.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1360
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1128
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\A8GEzjeq3z.ini"
        3⤵
          PID:984
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\gjpjZrLiFB.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:1644

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/984-68-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/984-83-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/984-75-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/984-74-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/984-73-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1128-60-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1128-57-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1128-84-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1128-62-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1128-70-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1128-58-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1360-54-0x00000000766F1000-0x00000000766F3000-memory.dmp

      Filesize

      8KB

    • memory/1360-56-0x0000000075000000-0x00000000755AB000-memory.dmp

      Filesize

      5.7MB

    • memory/1360-55-0x0000000075000000-0x00000000755AB000-memory.dmp

      Filesize

      5.7MB

    • memory/1360-67-0x0000000075000000-0x00000000755AB000-memory.dmp

      Filesize

      5.7MB

    • memory/1644-76-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1644-80-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1644-81-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1644-82-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB