Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    03/11/2026, 23:22

General

  • Target
    2026-11-01_47101661c7f3c37637fac879ece6c36a_amadey_elex_hijackloader_icedid_luca-stealer_njrat_stop_vidar_wannacry.exe
  • Size 2.8MB
  • Sample261103-3cshvsbf92
  • SHA256 6afb2a6c22491e583b791564737309a2343c8d52db2f68c546eec82c7165141b
  • 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
  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-01_47101661c7f3c37637fac879ece6c36a_amadey_elex_hijackloader_icedid_luca-stealer_njrat_stop_vidar_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-01_47101661c7f3c37637fac879ece6c36a_amadey_elex_hijackloader_icedid_luca-stealer_njrat_stop_vidar_wannacry.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:4852

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe-

        • Path C:\Program Files\7-Zip\7z.exe-
        • Size 3.3MB
        • SHA256 f47a067d0d9c42933ffa5718168bc004b83193e509cb6458107a023fd54e62c6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        fsb.tmp

        • Path C:\Windows\SysWOW64\fsb.tmp
        • Size 2.8MB
        • SHA256 74bebf24954c0082e402e6946f209b7c707b03a82bb967d0471a468488aaa40b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4852-1110-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4852-1849-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4852-2214-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4852-2215-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4852-2216-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4852-2217-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4852-2220-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4852-2224-0x0000000000400000-0x000000000041B000-memory.dmp