Analysis

  • max time kernel
    17s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07-09-2024 05:24

General

  • Target

    b75f309d88620c995b418917912db7d0N.exe

  • Size

    711KB

  • MD5

    b75f309d88620c995b418917912db7d0

  • SHA1

    7f221fc97cea79ed5fe18aae47ed95d0507e7547

  • SHA256

    bb60d6c5bd46b7aee32070f70166778babb3497b580d1f4ff9b70ff86215587b

  • SHA512

    4f793d0f588c489ab25315046b7a9ef60b8fe18bd03f06cba3c3bd807529948e75c205de20f97d5435629c8911eacdf3690c4c4b5dfa7a25ce7bdee77bec6275

  • SSDEEP

    12288:0Ed1lD17qtYpDGZmOQie4eOpn991X5pPOa57o0tYgWKnuxEj+BwkJHFQ1DO:0EblD17qsGZ6v4PPFqc7DWK4++fUDO

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 4 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 10 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

  • NirSoft WebBrowserPassView 4 IoCs

    Password recovery tool for various web browsers

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 28 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 12 IoCs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b75f309d88620c995b418917912db7d0N.exe
    "C:\Users\Admin\AppData\Local\Temp\b75f309d88620c995b418917912db7d0N.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3048
    • C:\Users\Admin\AppData\Local\Temp\Set-up.exe
      "C:\Users\Admin\AppData\Local\Temp\Set-up.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2408
    • C:\Users\Admin\AppData\Local\Temp\zinger.exe
      "C:\Users\Admin\AppData\Local\Temp\zinger.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2540
      • C:\Users\Admin\AppData\Local\Temp\zinger.exe
        "C:\Users\Admin\AppData\Local\Temp\zinger.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2900
        • C:\Users\Admin\AppData\Local\Temp\zinger.exe
          "C:\Users\Admin\AppData\Local\Temp\zinger.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2240
          • C:\Users\Admin\AppData\Local\Temp\zinger.exe
            "C:\Users\Admin\AppData\Local\Temp\zinger.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            PID:2600
          • C:\Users\Admin\AppData\Local\Temp\zinger.exe
            "C:\Users\Admin\AppData\Local\Temp\zinger.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2680
          • C:\Users\Admin\AppData\Local\Temp\zinger.exe
            "C:\Users\Admin\AppData\Local\Temp\zinger.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:2664

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\zinger.exe

    Filesize

    500KB

    MD5

    f80b7590f3715521e1a6979771bfadd4

    SHA1

    010a2f3ff60bee0684941fa27f2006e0f407070c

    SHA256

    b37a53a715abd7a2ce6be93198a9d79ff6da1f8f0e7370687fe5f3153c094112

    SHA512

    15362dc205daef29b7364efdc8176916e7aa72e6e41bbdbb7ae3f414e124443fdee9d447b2487e064314d2c36726cdf0c19d8e1d17c13a604d803288b91ae62f

  • \Users\Admin\AppData\Local\Temp\Set-up.exe

    Filesize

    793KB

    MD5

    9209338186015547dc9cd90258da09e4

    SHA1

    a6f17d98b85ae07d2962296a25a9e04f35463dae

    SHA256

    6be35fe8543aecfe21ece4a1077373a760e6d22012b32fb19a7a53ef15445b3d

    SHA512

    d7fb31b050dfa7bf31bcdf35650076ba431aca2af293efa0ff85936c387ed70eacb05820b796130b8d7e35307b7a217c1b4eed20298e1c53ed272f19c37855db

  • memory/2240-62-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-45-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-63-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-65-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-49-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-51-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-41-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-43-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-58-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-53-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-95-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-56-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-64-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2240-47-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2600-110-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2600-85-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2600-79-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2600-70-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2600-67-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2664-105-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2664-94-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2664-91-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2664-114-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2664-98-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2664-102-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2664-103-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2680-76-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2680-73-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2680-80-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2680-89-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2680-90-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2680-104-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2680-108-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2900-25-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2900-27-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2900-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2900-32-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2900-34-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2900-29-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/2900-115-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB