Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    06/09/2026, 23:32

General

  • Target
    2026-09-06_8561d9ad03cf2a2210ebaf2cdd88fbb3_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
  • Size 5.7MB
  • Sample260906-3jpqjsvcja
  • SHA256 674ab8e0ed13e955510ee85d9f1e589109646a63e8472653386918d2111da960
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Fesber

    Fesber is a Windows worm written in Delphi.

  • Detects Fesber payload 12 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\2026-09-06_8561d9ad03cf2a2210ebaf2cdd88fbb3_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-06_8561d9ad03cf2a2210ebaf2cdd88fbb3_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:1244

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 6.2MB
        • SHA256 0cb84a786b29200800a486ed1169836b290d198408ec8bb2ff130575cc7797f5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        fsb.tmp

        • Path C:\Windows\SysWOW64\fsb.tmp
        • Size 5.7MB
        • SHA256 8733653b83a0ef137d846d332ac4f80a0b5ebc76b744f1abdb89e8b47037088e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1244-970-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-1786-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-2207-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-2208-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-2209-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-2210-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-2213-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-2215-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-2217-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1244-2218-0x0000000000400000-0x000000000041B000-memory.dmp