Analysis

  • max time kernel
    150s
  • 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
    16/10/2026, 04:28

General

  • Target
    2026-10-15_ced6c8648de54acef6fb9bf1717f7c7c_amadey_cobalt-strike_coinminer_darkgate_elex_hijackloade.exe
  • Size 7.8MB
  • Sample261016-e3vtxa1z3j
  • SHA256 0958d606f0c3801cfbbb5a715c6dd9e9bfee0dcac4f73a9632dd6d34306522c9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Fesber

    Fesber is a Windows worm written in Delphi.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-15_ced6c8648de54acef6fb9bf1717f7c7c_amadey_cobalt-strike_coinminer_darkgate_elex_hijackloade.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-15_ced6c8648de54acef6fb9bf1717f7c7c_amadey_cobalt-strike_coinminer_darkgate_elex_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:4512

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe-

        • Path C:\Program Files\7-Zip\7z.exe-
        • Size 8.4MB
        • SHA256 ad1e0bcc02ce1416ea46c536b70b525b7974119ff8872ab87a5cf93ebfbec210
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4512-0-0x0000000000400000-0x000000000041E000-memory.dmp

        memory/4512-578-0x0000000000400000-0x000000000041E000-memory.dmp