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Analysis

  • max time kernel
    117s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16/03/2025, 08:14

General

  • Target

    JaffaCakes118_79818dfcc89bc05c035a7733b132a151.exe

  • Size

    827KB

  • MD5

    79818dfcc89bc05c035a7733b132a151

  • SHA1

    0c929416597cee0bda7826f1d118e183f19b13e8

  • SHA256

    4e5ca634aa01e8d36a453e351c0c15a9336454dc8ab9c2131d2fa70a2568de30

  • SHA512

    b3ac16ff92eec0d0d478587c23a5086234fb025eea7ad167ab42ca705bb56e780a5d8359dfeed5ea0314fd25f853c7355e104d1db160f139b1e9e7a4272a1b78

  • SSDEEP

    12288:StLt4absMaoEM4eKHsSlZdcHAf4aQ0icP+S2XDhCR6i/lCmf7T:o4abRTEpzQaIc2SEh5iomf7T

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
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 6 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 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_79818dfcc89bc05c035a7733b132a151.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_79818dfcc89bc05c035a7733b132a151.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2392
    • C:\Users\Admin\AppData\Local\Temp\ubTpZ.exe
      "C:\Users\Admin\AppData\Local\Temp\ubTpZ.exe"
      2⤵
      • Executes dropped EXE
      • 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:1400
      • C:\Users\Admin\AppData\Local\Temp\cvtres.exe
        C:\Users\Admin\AppData\Local\Temp\\cvtres.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:1632
        • C:\Users\Admin\AppData\Local\Temp\cvtres.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\d7HRdtrEx9.ini"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2868

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\d7HRdtrEx9.ini

    Filesize

    5B

    MD5

    d1ea279fb5559c020a1b4137dc4de237

    SHA1

    db6f8988af46b56216a6f0daf95ab8c9bdb57400

    SHA256

    fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

    SHA512

    720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

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

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

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

    Filesize

    295KB

    MD5

    9ca3e71897b9d05b50364d5fc12dd42f

    SHA1

    62f92bcfe4cba70d4f51a4802986ce2763c249da

    SHA256

    254ed746d3c100bf853385f88ef0efe1e6e42df3c400a49268b97fd50a8e97e6

    SHA512

    b8c3904dd2dbf11adfd95c8c986d91dca2e2be6daa4b12d39774321853eec2869d49c62bea0ac855a8d1e8cfccaa4baf48b565430cdf4fa1901d2d41175aafa3

  • memory/1400-15-0x0000000074360000-0x000000007490B000-memory.dmp

    Filesize

    5.7MB

  • memory/1400-44-0x0000000074360000-0x000000007490B000-memory.dmp

    Filesize

    5.7MB

  • memory/1400-14-0x0000000074360000-0x000000007490B000-memory.dmp

    Filesize

    5.7MB

  • memory/1400-16-0x0000000074360000-0x000000007490B000-memory.dmp

    Filesize

    5.7MB

  • memory/1632-21-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1632-46-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1632-23-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1632-26-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1632-22-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1632-47-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1632-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2392-2-0x0000000074360000-0x000000007490B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-13-0x0000000074360000-0x000000007490B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-1-0x0000000074360000-0x000000007490B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-0-0x0000000074361000-0x0000000074362000-memory.dmp

    Filesize

    4KB

  • memory/2868-37-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2868-38-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2868-40-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2868-39-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2868-42-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2868-34-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB