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Analysis

  • max time kernel
    107s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/02/2025, 03:50

General

  • Target

    join.exe

  • Size

    200KB

  • MD5

    ea95542a4a96525ec8eaf1f26d6770c5

  • SHA1

    c97a8c81d5105d8ab822edb1b68a1053e9fd2ded

  • SHA256

    4e718d1c539bace6976465321f3c86e79c652fbdb34e1997888cac3b0e58c661

  • SHA512

    09f0be9c78ef88029a67012a59d570dc29f8f6f3d7f57c07cc9778e6e4d320b943ae9d39882bbb58916129e984bc0b005eef46b77142c1931925d73c1568721c

  • SSDEEP

    3072:PTqPRdyeIKDWx85IOlKeJVos/8eRwXiUUAdV95I4Rp+LH1xrl3Ez8ub8Xr:PTqPRddIKCC0ef//uXltKc+LVsz9b8

Malware Config

Signatures

  • 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 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • System Location Discovery: System Language Discovery 1 TTPs 2 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 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\join.exe
    "C:\Users\Admin\AppData\Local\Temp\join.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3536
    • C:\Users\Admin\AppData\Local\Temp\join.exe
      /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4552

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    5B

    MD5

    d1ea279fb5559c020a1b4137dc4de237

    SHA1

    db6f8988af46b56216a6f0daf95ab8c9bdb57400

    SHA256

    fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

    SHA512

    720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

  • memory/4552-2-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4552-4-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4552-5-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4552-6-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4552-8-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB