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Analysis

  • max time kernel
    93s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/01/2025, 01:05

General

  • Target

    JaffaCakes118_5119b8df58fae088f338fb83d9a2b3bc.exe

  • Size

    933KB

  • MD5

    5119b8df58fae088f338fb83d9a2b3bc

  • SHA1

    5d6ffd11b68784c6342dc03a044fea4f2550ee1f

  • SHA256

    936daa7b23217158833c1e1b9b05a1ebfb07caa12ad53d11481f2c510f30d6fb

  • SHA512

    83a0df00d54c89d5f624a211a8f84d421e57d452dd8aa9439822ca218835f8980d149eb392d2adae4064f8a0cafeb2e9c9c46b32c9130b00ee93e0eb1a592e88

  • SSDEEP

    12288:ApegXVGSgu10Vdx2mT0tL5kDrPrIrpJl3FbONGNT19Himy8H4CNjGzwUOOUjjoKc:AZsSaQ4PAZ2CJxHjjohNb4i

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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • 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 2 IoCs
  • UPX packed file 5 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 use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5119b8df58fae088f338fb83d9a2b3bc.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5119b8df58fae088f338fb83d9a2b3bc.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4504
    • C:\Users\Admin\AppData\Local\Temp\AutoUpdatePlus.exe
      "C:\Users\Admin\AppData\Local\Temp\AutoUpdatePlus.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1548
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      C:\Users\Admin\AppData\Local\Temp\svchost.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3020
      • C:\Users\Admin\AppData\Local\Temp\svchost.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\xMzzx8YnCd.ini"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3648

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    440KB

    MD5

    e8b79675961ba6f00a41b947104d2e2a

    SHA1

    c42402bd9aa85624204083970776519eb881d5c3

    SHA256

    515d7111bcdb1ba733a5eb5e486df1b375a018c26df70613d3a20b2e42e217e0

    SHA512

    010951169fecdd530b54a740e7731d3d4aeeb0431ee27fc8cfed55125f7b26b95472aa7aca8f6f92ef3c74174eef0db38785d52b8442692d7b726ad4e1fabbc5

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

    Filesize

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

  • C:\Users\Admin\AppData\Local\Temp\xMzzx8YnCd.ini

    Filesize

    5B

    MD5

    d1ea279fb5559c020a1b4137dc4de237

    SHA1

    db6f8988af46b56216a6f0daf95ab8c9bdb57400

    SHA256

    fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

    SHA512

    720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

  • memory/3020-41-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/3020-38-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/3020-18-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/3020-22-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/3648-31-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/3648-32-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/3648-34-0x0000000000460000-0x0000000000529000-memory.dmp

    Filesize

    804KB

  • memory/3648-36-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/3648-26-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/3648-29-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4504-0-0x0000000074F22000-0x0000000074F23000-memory.dmp

    Filesize

    4KB

  • memory/4504-30-0x0000000074F20000-0x00000000754D1000-memory.dmp

    Filesize

    5.7MB

  • memory/4504-2-0x0000000074F20000-0x00000000754D1000-memory.dmp

    Filesize

    5.7MB

  • memory/4504-1-0x0000000074F20000-0x00000000754D1000-memory.dmp

    Filesize

    5.7MB