Analysis

  • max time kernel
    59s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 13:36

General

  • Target

    77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe

  • Size

    613KB

  • MD5

    15735b6138ce6e6e570337583cbe35d0

  • SHA1

    324cd39f6bdeb4aed2c269d2ed0dda967b3f0320

  • SHA256

    77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc

  • SHA512

    00d9586e510a3e29c2069bd49e710c2280d5a1eea196f1d2bb8cf62db897114ae0534c696a66be9ec10811861014b0bb62cad21ba00ecdf99811a10b9c65eabb

  • SSDEEP

    12288:kRmL9rS+IOXesSx9/t1VDA0XV1ZHwu8EMJbahjgq+H1Zd:Ww9S3d+MHwu+bKqH1H

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 10 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • Nirsoft 2 IoCs
  • UPX packed file 17 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 5 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe
    "C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1504
    • C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe
      "C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:920
      • C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe
        "C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Modifies system certificate store
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1676
        • C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\sGBcV9RMv7.ini"
          4⤵
            PID:812
          • C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe
            /scomma "C:\Users\Admin\AppData\Local\Temp\rTlSoupIRu.ini"
            4⤵
            • Accesses Microsoft Outlook accounts
            PID:1704
      • C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe
        "C:\Users\Admin\AppData\Local\Temp\77f0b068f71311ce1430d195a286b407d6d3c8f475bc3c28fb2daa387eea94bc.exe"
        2⤵
          PID:1176

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\sGBcV9RMv7.ini

        Filesize

        5B

        MD5

        d1ea279fb5559c020a1b4137dc4de237

        SHA1

        db6f8988af46b56216a6f0daf95ab8c9bdb57400

        SHA256

        fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

        SHA512

        720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

      • memory/812-102-0x0000000000400000-0x0000000000453000-memory.dmp

        Filesize

        332KB

      • memory/812-101-0x0000000000400000-0x0000000000453000-memory.dmp

        Filesize

        332KB

      • memory/812-98-0x0000000000400000-0x0000000000453000-memory.dmp

        Filesize

        332KB

      • memory/812-97-0x0000000000400000-0x0000000000453000-memory.dmp

        Filesize

        332KB

      • memory/812-93-0x0000000000400000-0x0000000000453000-memory.dmp

        Filesize

        332KB

      • memory/920-61-0x0000000000400000-0x0000000000449000-memory.dmp

        Filesize

        292KB

      • memory/920-65-0x0000000000400000-0x0000000000449000-memory.dmp

        Filesize

        292KB

      • memory/920-89-0x0000000000400000-0x0000000000449000-memory.dmp

        Filesize

        292KB

      • memory/920-68-0x0000000000400000-0x0000000000449000-memory.dmp

        Filesize

        292KB

      • memory/920-60-0x0000000000400000-0x0000000000449000-memory.dmp

        Filesize

        292KB

      • memory/920-57-0x0000000000400000-0x0000000000449000-memory.dmp

        Filesize

        292KB

      • memory/920-58-0x0000000000400000-0x0000000000449000-memory.dmp

        Filesize

        292KB

      • memory/920-78-0x00000000005E9000-0x000000000062B000-memory.dmp

        Filesize

        264KB

      • memory/920-77-0x00000000005EB000-0x000000000062D000-memory.dmp

        Filesize

        264KB

      • memory/1176-64-0x0000000000400000-0x0000000000427000-memory.dmp

        Filesize

        156KB

      • memory/1176-83-0x0000000000400000-0x0000000000427000-memory.dmp

        Filesize

        156KB

      • memory/1176-79-0x0000000075661000-0x0000000075663000-memory.dmp

        Filesize

        8KB

      • memory/1176-73-0x0000000000400000-0x0000000000427000-memory.dmp

        Filesize

        156KB

      • memory/1176-70-0x0000000000400000-0x0000000000427000-memory.dmp

        Filesize

        156KB

      • memory/1176-69-0x0000000000400000-0x0000000000427000-memory.dmp

        Filesize

        156KB

      • memory/1176-66-0x0000000000400000-0x0000000000427000-memory.dmp

        Filesize

        156KB

      • memory/1504-81-0x0000000000400000-0x00000000005D6000-memory.dmp

        Filesize

        1.8MB

      • memory/1504-56-0x0000000000400000-0x00000000005D6000-memory.dmp

        Filesize

        1.8MB

      • memory/1676-80-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/1676-112-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/1676-99-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/1676-100-0x0000000002720000-0x00000000028F6000-memory.dmp

        Filesize

        1.8MB

      • memory/1676-87-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/1676-82-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/1676-85-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/1676-113-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/1704-105-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/1704-110-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/1704-111-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB

      • memory/1704-109-0x0000000000400000-0x000000000041F000-memory.dmp

        Filesize

        124KB