Overview

overview

10

Static

static

10

2026-11-01...ar.exe

windows10-2004-x64

10

2026-11-01...ar.exe

windows11-ltsc_2024-x64

10

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
    02/11/2026, 03:55

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General

  • Target
    2026-11-01_ee88a2e0edf6ce75ae9bc06b381186bb_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe
  • Size 8.3MB
  • Sample261102-eg8hwaea63
  • SHA256 453bdecd88014b8f46639ac6c0470b94028ed6ea70d79ac9d64ad4bb252ffd6c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoveryfesberpersistenceupxworm

Malware Config

Signatures

  • Family: Fesber

    Fesber is a Windows worm written in Delphi.

    wormfesber
  • Detects Fesber payload 4 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Drops file in System32 directory 3 IoCs
  • UPX packed file 4 IoCs

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

    upx
  • 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.

    discovery
  • 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.

    discovery

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-01_ee88a2e0edf6ce75ae9bc06b381186bb_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-01_ee88a2e0edf6ce75ae9bc06b381186bb_akira_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_njrat_stealc_vidar.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:436

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe-
        • Path C:\Program Files\7-Zip\7z.exe-
        • Size 8.9MB
        • SHA256 75b5f1495f2fdb65142126bc5a5699ac2ceab5bd546e336fabc0c209996cf2a8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        UnblockSplit.exe-
        • Path C:\Users\Admin\Downloads\UnblockSplit.exe-
        • Size 9.0MB
        • SHA256 a1df6733b4404e30652dd001e41d48e1b1c88975addc260942750685863bb918
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/436-0-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/436-527-0x0000000000400000-0x000000000041E000-memory.dmp
        Download