Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/09/2026, 22:52

General

  • Target
    2026-09-09_d96db26cd176e6529f987dec5c2724b8_elex_manuscrypt_rhadamanthys_stop.exe
  • Size 511KB
  • Sample260910-2tjfvaxbmf
  • SHA256 5e6dc6d41fdcac3866cfff0234abcce6c7888b0807a34d9ae83f1b21ba2c79c2
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Gepys

    Gepys is a Windows trojan.

  • Detects Gepys trojan 7 IoCs
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-09_d96db26cd176e6529f987dec5c2724b8_elex_manuscrypt_rhadamanthys_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-09_d96db26cd176e6529f987dec5c2724b8_elex_manuscrypt_rhadamanthys_stop.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3824
  • C:\PROGRA~3\Mozilla\yfyouyb.exe
    "C:\PROGRA~3\Mozilla\yfyouyb.exe" -vvzltsn
    1⤵
    • Executes dropped EXE
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3200
  • C:\PROGRA~3\Mozilla\yfyouyb.exe
    C:\PROGRA~3\Mozilla\yfyouyb.exe
    1⤵
    • Executes dropped EXE
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5688
  • C:\PROGRA~3\Mozilla\yfyouyb.exe
    "C:\PROGRA~3\Mozilla\yfyouyb.exe" -vvzltsn
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:980

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        htdrcxc.dll

        • Path C:\PROGRA~3\Mozilla\htdrcxc.dll
        • Size 56KB
        • SHA256 bb92e883641fa017df2543a09a1898d662d51bbca4c317b255864def267d7131
        • MD5 SHA1 SHA512 SSDEEP TLSH

        yfyouyb.exe

        • Path C:\PROGRA~3\Mozilla\yfyouyb.exe
        • Size 511KB
        • SHA256 671a5a45e19b369c95f3ae4138e2c8911393896f042ebf5a5a6c5551d5d263ef
        • MD5 SHA1 SHA512 SSDEEP TLSH

        yfyouyb.exe

        • Path C:\ProgramData\Mozilla\yfyouyb.exe
        • Size 511KB
        • SHA256 bd849e5bd549becd376e598079c41a1b08865a1fa473a9fff5597fd0ee65993f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/980-29-0x0000000010000000-0x0000000010016000-memory.dmp

        memory/980-27-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/980-26-0x0000000000F20000-0x0000000000F36000-memory.dmp

        memory/980-23-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/980-24-0x0000000000F20000-0x0000000000F36000-memory.dmp

        memory/980-25-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/980-22-0x0000000010000000-0x0000000010016000-memory.dmp

        memory/3200-10-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/3200-14-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/3200-9-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/3824-0-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/3824-6-0x0000000002260000-0x00000000022BB000-memory.dmp

        memory/3824-4-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/3824-2-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/3824-1-0x0000000002260000-0x00000000022BB000-memory.dmp

        memory/5688-17-0x0000000000400000-0x000000000045B000-memory.dmp

        memory/5688-12-0x0000000000400000-0x000000000045B000-memory.dmp