Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    08-01-2025 15:04

General

  • Target

    3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe

  • Size

    389KB

  • MD5

    7b8ca19e8b7133aa8de06bc67e686330

  • SHA1

    f347e1868be50a71042d9498955bc9ce48fef47a

  • SHA256

    3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469b

  • SHA512

    b4fd99b080d780d127e9384b52f78e309a4efd38aaa870f8fb52ca896db4c3c12cc581aac11a75ff8de8ddade43dffc76e38b99b8623fbda906bfcb637d6de62

  • SSDEEP

    6144:JtEVpyJD+zjjSKDCmSam8xOPC4sOwMrSWtDYR3x0/9Yz1i:JtEVpyJyzjjJ4aBmCQr50uF

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 4 IoCs
  • Isrstealer family
  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • Executes dropped EXE 18 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 9 IoCs
  • Suspicious use of SetThreadContext 36 IoCs
  • UPX packed file 16 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 36 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
    "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
      "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2752
      • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\PpzkU9htT8.ini"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2948
      • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\i0nKETXtRW.ini"
        3⤵
          PID:2512
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dslhost.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dslhost.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2892
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2408
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:2308
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\F4xhwmjt2k.ini"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:2460
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\6r8acqqnOg.ini"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:1828
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:2996
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\d87CXhoApY.ini"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:3064
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\3ZRSfl0ZDj.ini"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:2748
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:2192
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\tToximnYdE.ini"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:2672
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\KqLaj95hn5.ini"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:608
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe"
            4⤵
            • Executes dropped EXE
            PID:2648
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:2584
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\BAwvnc1ibw.ini"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:652
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\KC6sLwlOOB.ini"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:2492
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:2968
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\CVv38RzOni.ini"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:1644
      • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
        "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2348
        • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\JtU7gXSkSR.ini"
          3⤵
          • System Location Discovery: System Language Discovery
          PID:1228
        • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\XRmX98N3zl.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:1100
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dslhost.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dslhost.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1964
      • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
        "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2384
        • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\HUH7a58psA.ini"
          3⤵
          • System Location Discovery: System Language Discovery
          PID:848
        • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\3lHc6bvWIh.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:2268
      • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
        "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:320
        • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\1t4dJ3kM4G.ini"
          3⤵
          • System Location Discovery: System Language Discovery
          PID:3048
        • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\RIZGmpbSaW.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:2768
      • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
        "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
        2⤵
          PID:1652
        • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
          "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
          2⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:1892
          • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
            /scomma "C:\Users\Admin\AppData\Local\Temp\LqVVGcoqgL.ini"
            3⤵
            • System Location Discovery: System Language Discovery
            PID:536
          • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
            /scomma "C:\Users\Admin\AppData\Local\Temp\aKyMOEgHk0.ini"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:2372
        • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
          "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
          2⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:1400
          • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
            /scomma "C:\Users\Admin\AppData\Local\Temp\6enSsMq6sr.ini"
            3⤵
              PID:1564
            • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\5awEYUf71x.ini"
              3⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:1836
          • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
            "C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe"
            2⤵
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:716
            • C:\Users\Admin\AppData\Local\Temp\3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469bN.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\mMQKzlMG6u.ini"
              3⤵
              • System Location Discovery: System Language Discovery
              PID:1648

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\PpzkU9htT8.ini

          Filesize

          5B

          MD5

          d1ea279fb5559c020a1b4137dc4de237

          SHA1

          db6f8988af46b56216a6f0daf95ab8c9bdb57400

          SHA256

          fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

          SHA512

          720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dslhost.exe

          Filesize

          11KB

          MD5

          fc2e803e85d0c50ab6227dd79340f205

          SHA1

          122bf356ce10cb75d0a6b86ae921b9abc746487c

          SHA256

          6c8da53dd540f6ba029cf855d7f4e150e8fce2f43fe95e919e2205a299a1736b

          SHA512

          8e085f425478af443baa3d56770028ac6cd70c64e09123902f134771d5dea6bf7cb989ae83734eaa9aa43ac991e8b487376a2bcee5ed3dd3d429de10c4a19ea9

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pcisv.exe

          Filesize

          389KB

          MD5

          7b8ca19e8b7133aa8de06bc67e686330

          SHA1

          f347e1868be50a71042d9498955bc9ce48fef47a

          SHA256

          3e38444ba9e9764335fa316410b7261f1f672e51178b3ce87f3cee7fb60e469b

          SHA512

          b4fd99b080d780d127e9384b52f78e309a4efd38aaa870f8fb52ca896db4c3c12cc581aac11a75ff8de8ddade43dffc76e38b99b8623fbda906bfcb637d6de62

        • memory/1100-55-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1100-56-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1100-57-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1228-50-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/1228-51-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/1828-94-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1828-95-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/2172-3-0x0000000074080000-0x000000007462B000-memory.dmp

          Filesize

          5.7MB

        • memory/2172-0-0x0000000074081000-0x0000000074082000-memory.dmp

          Filesize

          4KB

        • memory/2172-2-0x0000000074080000-0x000000007462B000-memory.dmp

          Filesize

          5.7MB

        • memory/2172-1-0x0000000074080000-0x000000007462B000-memory.dmp

          Filesize

          5.7MB

        • memory/2268-97-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/2268-98-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/2308-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2460-73-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2460-72-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2752-8-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2752-7-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2752-11-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2752-37-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2752-6-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2752-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2752-34-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2892-27-0x0000000001D70000-0x0000000001DB0000-memory.dmp

          Filesize

          256KB

        • memory/2892-35-0x0000000001D70000-0x0000000001DB0000-memory.dmp

          Filesize

          256KB

        • memory/2948-32-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2948-19-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2948-21-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2948-16-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB