Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    14/10/2026, 03:59

General

  • Target
    FM4ffx.exe
  • Size 319KB
  • Sample261014-eka2savy3r
  • SHA256 3ac3c700060a0487060724f3fd22faf70d5f633e69401641964d7ba4d6e6e570
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 64 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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\FM4ffx.exe
    "C:\Users\Admin\AppData\Local\Temp\FM4ffx.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    PID:4720

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        nsnCB22.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\nsnCB22.tmp
        • Size 597B
        • SHA256 fbab85b197cfeb3470d61775e1f1c4d552367b0c82f1d415ae9bdb790636f7de
        • MD5 SHA1 SHA512 TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nssCA51.tmp\System.dll
        • Size 11KB
        • SHA256 dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Time.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nssCA51.tmp\Time.dll
        • Size 10KB
        • SHA256 b4a95a455e53372c59f91bc1b5fb9e5c8e4a10a506fa04aaf7be27048b30ae35
        • MD5 SHA1 SHA512 SSDEEP TLSH

        mt.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nssCA51.tmp\mt.dll
        • Size 5KB
        • SHA256 6dc2644a389feeef9e0ac65e2c8b01fc18ca6e53b253f10efffcb117e0a852dd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsisos.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nssCA51.tmp\nsisos.dll
        • Size 5KB
        • SHA256 ba79ab7f63f02ed5d5d46b82b11d97dac5b7ef7e9b9a4df926b43ceac18483b6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cn.png

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0inymrgq.default-release\extensions\[email protected]\content\imgs\flgs\cn.png
        • Size 472B
        • SHA256 7058233b5bdfdd4279e92e9dfe64bd4a61afd7e76d97dba498ce1d5777b92185
        • MD5 SHA1 SHA512 TLSH

        il.png

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0inymrgq.default-release\extensions\[email protected]\content\imgs\flgs\il.png
        • Size 431B
        • SHA256 5432e244f03e3973153451b1ec88d649459580eab66e2df936fe2f70f2fed823
        • MD5 SHA1 SHA512 TLSH

        jp.png

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0inymrgq.default-release\extensions\[email protected]\content\imgs\flgs\jp.png
        • Size 420B
        • SHA256 5efce88ac7228ea159bcf7fd1cc56d73c19428394218706524bac0e9151d4c61
        • MD5 SHA1 SHA512 TLSH

        us.png

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0inymrgq.default-release\extensions\[email protected]\content\imgs\flgs\us.png
        • Size 609B
        • SHA256 36cce5cae3d2e0045b2b2b6cbffdad7a0aba3e99919cc219bbf0578efdc45585
        • MD5 SHA1 SHA512 TLSH

        user.js

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0inymrgq.default-release\user.js
        • Size 830B
        • SHA256 2a837317cb6b285fb5c713a0045577564db912d91342ab7da62dbf190571d878
        • MD5 SHA1 SHA512 TLSH

        user.js

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\xynr4oz2.Admin\user.js
        • Size 431B
        • SHA256 06df6ab198c045a72525e19e0da9cffe91f386698596bd6e3b6884cbfaaf5fa7
        • MD5 SHA1 SHA512 TLSH

        user.js

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\xynr4oz2.Admin\user.js
        • Size 1KB
        • SHA256 60837c7ca6feaf5d07262249090d29f2a0f9458e9f226307c21262356684c121
        • MD5 SHA1 SHA512 TLSH