Analysis

  • max time kernel
    32s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    06-02-2025 09:21

General

  • Target

    JaffaCakes118_a99b1e48221b678c4da6621cc645bf0f.exe

  • Size

    697KB

  • MD5

    a99b1e48221b678c4da6621cc645bf0f

  • SHA1

    abbf4d11dc1ea12cdb96a13ac3fb9c7978dc078b

  • SHA256

    1ea24c494567b22d017f86556288372e708d7cfacd45472aa45568bd5102b271

  • SHA512

    ac15d68dfdc70224c698bd5515c60425d4ea202853e9504382ce950e31fa89213d132bac8cca8eec60d298ba20c6fdfb458b72450185a1b5d1e5f1fe9a0d86aa

  • SSDEEP

    12288:tirqB1AG3coGYUoQdqqJ6/uxOuMve/VOPhfFDwYl2vzcBtMmcRpaBtDnegA+G9bp:IM1AGcoktdqX/u/kPNF9lkHmWaBtn2bp

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 3 IoCs
  • Isrstealer family
  • Detected Nirsoft tools 8 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 3 IoCs

    Password recovery tool for various web browsers

  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 32 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 3 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 6 IoCs
  • UPX packed file 17 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 11 IoCs

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

  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a99b1e48221b678c4da6621cc645bf0f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a99b1e48221b678c4da6621cc645bf0f.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Users\Admin\AppData\Local\Temp\Keygen.exe
      "C:\Users\Admin\AppData\Local\Temp\Keygen.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1988
    • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe
      "C:\Users\Admin\AppData\Local\Temp\xxxxxx.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:2380
      • C:\Windows\SysWOW64\ipconfig.exe
        "C:\Windows\System32\ipconfig.exe" /release
        3⤵
        • System Location Discovery: System Language Discovery
        • Gathers network information
        PID:2808
      • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe
        "C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2188
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /renew
          4⤵
          • System Location Discovery: System Language Discovery
          • Gathers network information
          PID:2572
      • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe
        "C:\Users\Admin\AppData\Local\Temp\xxxxxx.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:3012
        • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe
          "C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          PID:1852
          • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe
            "C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            PID:1856
          • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe
            "C:\Users\Admin\AppData\Local\Temp\xxxxxx.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:1648
          • C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe
            "C:\Users\Admin\AppData\Local\Temp\xxxxxx.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:1668

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\Keygen.exe

    Filesize

    217KB

    MD5

    df5a77b4574b4034aa7bb632d80bcf98

    SHA1

    18b02e09b573806a4c14919755aea053a48846a7

    SHA256

    5734ec906648d40a255b5e22e77fea99f1bb2cc237dc506549a5259e9f0da08c

    SHA512

    4833e80cc50349ec37af8f408841687db4ce5b66fe185b12d7c564f5f45799bea6a35adbf655d2630436be246a6bb7a91dd2cf50c552848b24895b7dfa21506a

  • \Users\Admin\AppData\Local\Temp\xxxxxx.exe

    Filesize

    548KB

    MD5

    4d6bc1d7974c06161e1ed65c7f0a20a8

    SHA1

    1a98ef9a70d39f916a81e0e8c9cf95c8c145744b

    SHA256

    024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c

    SHA512

    c2d1b78364de65346e64e0fd0bed87c4ab110de1e03705b68489503f5069053a647d478c7b0c5217cc8f9f40fe39deceb2c809a714a92ffc8c741d273799e5ee

  • memory/1648-123-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1648-130-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1648-104-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1648-107-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1648-133-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1668-109-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1668-116-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1668-120-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1668-122-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1668-112-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1668-129-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1668-140-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1852-83-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-78-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-66-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-68-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-70-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-72-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-74-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-90-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-76-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-89-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-114-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-88-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-81-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1852-87-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/1856-95-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/1856-92-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/1856-98-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/1856-103-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/1988-20-0x0000000000240000-0x000000000029A000-memory.dmp

    Filesize

    360KB

  • memory/1988-21-0x0000000000260000-0x0000000000262000-memory.dmp

    Filesize

    8KB

  • memory/1988-19-0x0000000000400000-0x000000000045A000-memory.dmp

    Filesize

    360KB

  • memory/1988-155-0x0000000000400000-0x000000000045A000-memory.dmp

    Filesize

    360KB

  • memory/1988-48-0x0000000000400000-0x000000000045A000-memory.dmp

    Filesize

    360KB

  • memory/2188-32-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2188-30-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2188-43-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2188-37-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2188-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2188-34-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2188-45-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2188-39-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2188-134-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2380-28-0x0000000003D00000-0x00000000047BA000-memory.dmp

    Filesize

    10.7MB

  • memory/2516-5-0x0000000002970000-0x00000000029CA000-memory.dmp

    Filesize

    360KB

  • memory/3012-57-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/3012-54-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/3012-50-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/3012-52-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB

  • memory/3012-59-0x0000000000400000-0x0000000000470000-memory.dmp

    Filesize

    448KB