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Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/03/2025, 01:53

General

  • Target

    JaffaCakes118_43efa4037db761e32029b520e817a5b0.exe

  • Size

    667KB

  • MD5

    43efa4037db761e32029b520e817a5b0

  • SHA1

    43a12335acf9b750ff3179ea815a8153db9e8c13

  • SHA256

    3e878f7935ac847192050fee7712a5eab805b550aa25e6ddd68e366351714d06

  • SHA512

    a20b37db9d26ada4e4c3959baa9878aa95bfa231b8b606cbf2819fe9bc0d0cf6f9fbac160f51f4f68a8297a98b4b33feac5cab02728673338a13babcb5be84d0

  • SSDEEP

    12288:jA8aGZNqn0BX0c6I3+IdesTqn0BX0c6I3+Ides:jAqunTnogVnTnog

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 1 IoCs

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

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • 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 3 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 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43efa4037db761e32029b520e817a5b0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43efa4037db761e32029b520e817a5b0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2840
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\cc.vbs"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2820
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43efa4037db761e32029b520e817a5b0.exe
      C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43efa4037db761e32029b520e817a5b0.exe
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2728
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43efa4037db761e32029b520e817a5b0.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\WPWILyzg85.ini"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2640
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_43efa4037db761e32029b520e817a5b0.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\Q48ttQyvRB.ini"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:2360

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\WPWILyzg85.ini

    Filesize

    5B

    MD5

    d1ea279fb5559c020a1b4137dc4de237

    SHA1

    db6f8988af46b56216a6f0daf95ab8c9bdb57400

    SHA256

    fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

    SHA512

    720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

  • C:\Users\Admin\AppData\Local\Temp\cc.vbs

    Filesize

    375B

    MD5

    1801a31cd12df7029ac0463655957c12

    SHA1

    620f563133832c9088b19dc097808fdc8eb8463e

    SHA256

    7521a6698ac86d3ec42b45ffc2de6908c61789c69c6a5881b928810f1c1a699d

    SHA512

    a3d34ebd5a734cc52f301e4cd46bf1cc556e0e781ac89aa8a3c7b21ceeba91b86a9a16e60afec498b3b1cc36e3911b82aac540eb0e4895ce4f9a1778c1d36cdb

  • memory/2360-25-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2360-24-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2360-23-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2640-20-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2640-13-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2640-15-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2640-17-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2640-16-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2728-8-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2728-22-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2728-26-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2840-18-0x0000000074D10000-0x00000000752BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2840-0-0x0000000074D11000-0x0000000074D12000-memory.dmp

    Filesize

    4KB

  • memory/2840-2-0x0000000074D10000-0x00000000752BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2840-1-0x0000000074D10000-0x00000000752BB000-memory.dmp

    Filesize

    5.7MB