Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    17/09/2026, 12:25

General

  • Target
    2026-09-17_6a73f3f1b3760596e6568c78dfbeafe8_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
  • Size 7.4MB
  • Sample260917-pl3taser5w
  • SHA256 8128bbfb29ddb6629f514e8dd89a673098cbceaea738ed69a9fdf4daa0f2cbdc
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Fesber

    Fesber is a Windows worm written in Delphi.

  • Detects Fesber payload 10 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Drops file in System32 directory 3 IoCs
  • UPX packed file 1 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 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\2026-09-17_6a73f3f1b3760596e6568c78dfbeafe8_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-17_6a73f3f1b3760596e6568c78dfbeafe8_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4880

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe-

        • Path C:\Program Files\7-Zip\7z.exe-
        • Size 7.9MB
        • SHA256 2aec0a3966edb65a131cf1f2c2577207669fc7093057ba2fd37064df15e75186
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4880-513-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4880-901-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4880-1267-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4880-1268-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4880-1269-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4880-1270-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4880-1273-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4880-1277-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4880-1278-0x0000000000400000-0x000000000041B000-memory.dmp