Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    10-02-2025 14:10

General

  • Target

    JaffaCakes118_dc35c41440704458ed7a60c0ac026f62.exe

  • Size

    408KB

  • MD5

    dc35c41440704458ed7a60c0ac026f62

  • SHA1

    28459a2a602943fb5f44cb7424061c390fefb502

  • SHA256

    4d4e7a37101a9fa0810a3ff324a87c302a1328dcaeae6a9c637752e871a1a678

  • SHA512

    f522adf75f7915caf3a87551f4704303ddde487da920c6a2a762d4fc821f5c6749b2496cdd5b5193252eb97f01cdcc3dc77584be90e6833e32f2410b955f8081

  • SSDEEP

    6144:v7l/Mts0sXrneChRWcSUEC8ctAom2C+do4ON1ZA0bYQpBuLGlY+6iPHS/ei:hMSeChscpEBctA2Q11aPQ3/6/ei

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 5 IoCs
  • Isrstealer family
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 12 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 6 IoCs
  • UPX packed file 8 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.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc35c41440704458ed7a60c0ac026f62.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc35c41440704458ed7a60c0ac026f62.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc35c41440704458ed7a60c0ac026f62.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc35c41440704458ed7a60c0ac026f62.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1776
      • C:\Users\Admin\AppData\Local\Temp\YTEYU.exe
        "C:\Users\Admin\AppData\Local\Temp\YTEYU.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2924
        • C:\Users\Admin\AppData\Local\Temp\YTEYU.exe
          "C:\Users\Admin\AppData\Local\Temp\YTEYU.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1452
          • C:\Users\Admin\AppData\Local\Temp\YTEYU.exe
            "C:\Users\Admin\AppData\Local\Temp\YTEYU.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:2788
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc35c41440704458ed7a60c0ac026f62.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc35c41440704458ed7a60c0ac026f62.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\HGRON.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3024
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "invidiadriver" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\system32\intelgfx.exe" /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:432
      • C:\Users\Admin\AppData\Roaming\system32\intelgfx.exe
        "C:\Users\Admin\AppData\Roaming\system32\intelgfx.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2608
        • C:\Users\Admin\AppData\Roaming\system32\intelgfx.exe
          "C:\Users\Admin\AppData\Roaming\system32\intelgfx.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:1456
        • C:\Users\Admin\AppData\Roaming\system32\intelgfx.exe
          "C:\Users\Admin\AppData\Roaming\system32\intelgfx.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\HGRON.bat

    Filesize

    152B

    MD5

    5f88391307396bd801e5d983e4f96ac4

    SHA1

    d426f3dad0cd9f13287b263028ad4587f2b1d9c8

    SHA256

    2d6e24c71a3081416896765d09901744dbd541553af2d831f2a17f6f38ac4dec

    SHA512

    0cc65532264fe5541dc75016c080004c111fecfb97f2f0063984a89089d49ea07a1bf6c1fa9b835ad32cfa986bac82d171351c6cf2163598199588aefdb402f8

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

    Filesize

    320KB

    MD5

    ccc2260269cb43ddadda9444e3d112f7

    SHA1

    ddab46acc12d7c60a15fa363f88030f1dd539fcb

    SHA256

    8ca1bd039407381c33fb7ab570b6e95b0ce64b0d5ef64a1968f9b55647cc1911

    SHA512

    787d0b4f5d89b840a4917c78e46f963c8c96a96ec005b45d085222ef307c2a76f074c4a65ca033b038e1b7d1419c7cd3c5c5f3075c3ea24e546c68bdd7643fde

  • \Users\Admin\AppData\Roaming\system32\intelgfx.exe

    Filesize

    408KB

    MD5

    0cc7fe116fb8d93c2c8b76b79926721a

    SHA1

    264fb9309a0dc80e5a2aca6f8c8a13d7f73ce8e1

    SHA256

    b6d25485cf3c524bc47d035ad15a08295f3374e2ab52ff0b41e64fa9a3e67509

    SHA512

    c4ee5f35f86b7360fc95f5f474c345b81e3aae3bd4d8c1713b5b0b23b0b00aa5d61e6bf2f688bb0c192cc5c182021eff72716b84e701b9ab092c84022c03c4a9

  • memory/1456-815-0x0000000000400000-0x0000000000459000-memory.dmp

    Filesize

    356KB

  • memory/1456-804-0x0000000000400000-0x0000000000459000-memory.dmp

    Filesize

    356KB

  • memory/1776-383-0x0000000000400000-0x0000000000459000-memory.dmp

    Filesize

    356KB

  • memory/1776-818-0x0000000000400000-0x0000000000459000-memory.dmp

    Filesize

    356KB

  • memory/1884-805-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/1884-822-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2604-384-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2604-811-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3032-2-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/3032-74-0x0000000000610000-0x0000000000611000-memory.dmp

    Filesize

    4KB