Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    11/10/2026, 09:45

General

  • Target
    2026-10-10_83349ef655ef1969af03e9dfff269155_amadey_cobalt-strike_darkgate_elex_glassworm_hijackloade.exe
  • Size 10.3MB
  • Sample261011-lq8cssg15s
  • SHA256 ce737702069ea7b0859a498fe1bc349ca27ae182a1481ccd3ded35dedcc346f9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Fesber

    Fesber is a Windows worm written in Delphi.

  • Detects Fesber payload 11 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Drops file in System32 directory 3 IoCs
  • UPX packed file 2 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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.

  • Suspicious behavior: LoadsDriver 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-10_83349ef655ef1969af03e9dfff269155_amadey_cobalt-strike_darkgate_elex_glassworm_hijackloade.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-10_83349ef655ef1969af03e9dfff269155_amadey_cobalt-strike_darkgate_elex_glassworm_hijackloade.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    PID:1496

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe-

        • Path C:\Program Files\7-Zip\7z.exe-
        • Size 10.8MB
        • SHA256 1a851d441e6b191b8e7aadd6cea05ec2777f6bb4d5a5547f2883f8c0080e03fd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        EnterStep.exe-

        • Path C:\Users\Admin\Downloads\EnterStep.exe-
        • Size 11.2MB
        • SHA256 cafb87b00be77d409607168db9246580767ede09e81a4847282bcf3b2fab0f34
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1496-506-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1496-835-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1496-1148-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1496-1269-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1496-1270-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1496-1271-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1496-1272-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1496-1274-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1496-1278-0x0000000000400000-0x000000000041B000-memory.dmp