Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    05/06/2026, 10:44

General

  • Target
    K816Bdrive20240829.exe
  • Size 5.1MB
  • Sample260605-ms4casez4k
  • SHA256 8435b7cfedf40f3b3414a8d91e89e9f4a7136fcb555bfe7c4dbbdb9537aed705
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Inno Setup is an open-source installation builder for Windows applications. 3 IoCs

    Inno Setup installer

  • Modifies Control Panel 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\K816Bdrive20240829.exe
    "C:\Users\Admin\AppData\Local\Temp\K816Bdrive20240829.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4520
    • C:\Users\Admin\AppData\Local\Temp\is-DQSFR.tmp\K816Bdrive20240829.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-DQSFR.tmp\K816Bdrive20240829.tmp" /SL5="$60258,4906145,188928,C:\Users\Admin\AppData\Local\Temp\K816Bdrive20240829.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4708
      • C:\Program Files (x86)\K816B\Gaming Mouse 3.0.exe
        "C:\Program Files (x86)\K816B\Gaming Mouse 3.0.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies Control Panel
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:400

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Gaming Mouse 3.0.exe

        • Path C:\Program Files (x86)\K816B\Gaming Mouse 3.0.exe
        • Size 2.6MB
        • SHA256 77661d84db0a2a6826793a6bb758c694583b3421138904118dde703f9aac2762
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-HSVK1.tmp

        • Path C:\Program Files (x86)\K816B\skins\0_INI_CN\macroReset\is-HSVK1.tmp
        • Size 30KB
        • SHA256 e04e2133774ac24e41ed146dbce85d8a3f582b0f6168d1e1f9680772f6a9aed7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-IQV3S.tmp

        • Path C:\Program Files (x86)\K816B\skins\0_INI_CN\macroReset\is-IQV3S.tmp
        • Size 322B
        • SHA256 4699b785b81db9bafa82ade98d7e440c9ece797ba6dbf4d7ef10c0a1133879fd
        • MD5 SHA1 SHA512 TLSH

        is-JQRV4.tmp

        • Path C:\Program Files (x86)\K816B\skins\0_INI_CN\macroReset\is-JQRV4.tmp
        • Size 61KB
        • SHA256 0a453fc039b83fe93b617767a5d6a5e517136bbcdd614c6cfee55ddce4c85b63
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-R66IC.tmp

        • Path C:\Program Files (x86)\K816B\skins\0_INI_CN\macroReset\is-R66IC.tmp
        • Size 61KB
        • SHA256 fc01f4ce1ff86cf228403f07307b0654c570839c1274b0af115fb89262348a08
        • MD5 SHA1 SHA512 SSDEEP TLSH

        LanguageText.ini

        • Path C:\Program Files (x86)\K816B\skins\1_INI_EN\LanguageText.ini
        • Size 6KB
        • SHA256 37197c41cafd7b19f822f3485162bfbaa7338fcaa172b94ed7f6625d87f197eb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-FJJEB.tmp

        • Path C:\Program Files (x86)\K816B\skins\1_INI_EN\is-FJJEB.tmp
        • Size 60KB
        • SHA256 f6a5abe654bc8b0502acfeecfb2cccd8c5f22f56a502001fa8b1aa5a9f960b58
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-QGPO1.tmp

        • Path C:\Program Files (x86)\K816B\skins\1_INI_EN\is-QGPO1.tmp
        • Size 546B
        • SHA256 9726fba5cb81e7c81b472473ac4fdeb283937fe3121bb0b4b382e583f90e9335
        • MD5 SHA1 SHA512 TLSH

        is-HEIHS.tmp

        • Path C:\Program Files (x86)\K816B\skins\1_INI_EN\macroReset\is-HEIHS.tmp
        • Size 298B
        • SHA256 a11e0def5d591e97071fd4dfb14274bfd29aaf0c313b3ff53af665f08f2b9b39
        • MD5 SHA1 SHA512 TLSH

        skin_advance.ini

        • Path C:\Program Files (x86)\K816B\skins\1_INI_EN\skin_advance.ini
        • Size 3KB
        • SHA256 0d8c100557817937ddc18b89c993fcf596e861370797e5e610d11b6732c43fdf
        • MD5 SHA1 SHA512 TLSH

        skin_color.ini

        • Path C:\Program Files (x86)\K816B\skins\1_INI_EN\skin_color.ini
        • Size 5KB
        • SHA256 c35edfd4a7fd866c422070d53296307180ffbfcaa1de732f20f60ed8e21ec304
        • MD5 SHA1 SHA512 SSDEEP TLSH

        skin_mac.ini

        • Path C:\Program Files (x86)\K816B\skins\1_INI_EN\skin_mac.ini
        • Size 2KB
        • SHA256 24ba828d45179e44ce853551436b94b4f3042cd8040988a18b8d9a7e6b32543a
        • MD5 SHA1 SHA512 TLSH

        skin_main.ini

        • Path C:\Program Files (x86)\K816B\skins\1_INI_EN\skin_main.ini
        • Size 5KB
        • SHA256 d2a47fa4b1dacf7ae08695bffc1027cf3284e0a26032ede958bdac7ba529e81e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MacG_over.jpg

        • Path C:\Program Files (x86)\K816B\skins\MacMenu\MacG_over.jpg
        • Size 19KB
        • SHA256 331347ee3fb9255afcc1a254767305c7b0eeff435e956613b847534bc1d32635
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-VCV46.tmp

        • Path C:\Program Files (x86)\K816B\skins\MacMenu\is-VCV46.tmp
        • Size 11KB
        • SHA256 7bf371ac693c84883ef4976dccc42a1b2bc6df89a1b8b1d382034c4ca44fd353
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-9BL59.tmp

        • Path C:\Program Files (x86)\K816B\skins\config\font\is-9BL59.tmp
        • Size 154KB
        • SHA256 16466ef65064e6f3885a6d2806b8949ac1ac38b524dd0cf8fc96565eb4cc28e8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-0L1T6.tmp

        • Path C:\Program Files (x86)\K816B\skins\config\is-0L1T6.tmp
        • Size 8KB
        • SHA256 613463d5e87cb061e001ba7b1ccd6495250cecfbe143db5e5c2bf3041d31d4c1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-P8OAT.tmp

        • Path C:\Program Files (x86)\K816B\skins\config\is-P8OAT.tmp
        • Size 43KB
        • SHA256 3dac2542ef2df0fdd59fdf296bdd0c7751ecda0aa57a08839817ea303552914f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        is-JBE6V.tmp

        • Path C:\Program Files (x86)\K816B\skins\is-JBE6V.tmp
        • Size 19KB
        • SHA256 53a7d423b30c4c30ae5994c558d1b69acbdd4ab9dbf185e1b7d3d87984a5b113
        • MD5 SHA1 SHA512 SSDEEP TLSH

        main_down.jpg

        • Path C:\Program Files (x86)\K816B\skins\main_down.jpg
        • Size 290KB
        • SHA256 6bb4858c7a13939ab5743fb89842c6a1e24eda0fb2ed3c8e9da67065b4386b59
        • MD5 SHA1 SHA512 SSDEEP TLSH

        main_mask.jpg

        • Path C:\Program Files (x86)\K816B\skins\main_mask.jpg
        • Size 9KB
        • SHA256 2cb33ba0263b20b4979d9624a203eda7a3776bd0ab8b7aaf258c312f2726e3b8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        main_normal.jpg

        • Path C:\Program Files (x86)\K816B\skins\main_normal.jpg
        • Size 259KB
        • SHA256 16fd04b19f19b64ca71d07f4073a91b6958890317db1a07b0bc486d62934edca
        • MD5 SHA1 SHA512 SSDEEP TLSH

        main_over.jpg

        • Path C:\Program Files (x86)\K816B\skins\main_over.jpg
        • Size 277KB
        • SHA256 156bc34675e089bfc8dc9e9edf455468f3ae20fab3bcfd952d06809f8e3cd2c3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        warning2_mask.jpg

        • Path C:\Program Files (x86)\K816B\skins\warning2_mask.jpg
        • Size 60KB
        • SHA256 60c9ec315fa345167f0ad5318bea458accd6c5e6f72f21455ce8b215ad2b0405
        • MD5 SHA1 SHA512 SSDEEP TLSH

        warning2_normal.jpg

        • Path C:\Program Files (x86)\K816B\skins\warning2_normal.jpg
        • Size 106KB
        • SHA256 a41971c1a9f47edaccbd8f318cf190f6d08c12651577157c4259bae5d1fae70d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        warning2_over.jpg

        • Path C:\Program Files (x86)\K816B\skins\warning2_over.jpg
        • Size 52KB
        • SHA256 ccf7a76a722f94dd774a464dd92cc8165ef869e373d14c878f368eb5a0587dc5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        K816Bdrive20240829.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-DQSFR.tmp\K816Bdrive20240829.tmp
        • Size 1.2MB
        • SHA256 4d8f4aa226bcd81c7e5e9961d684321d22f5d7e0a0213682df8bbef3c374c718
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4520-0-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/4520-7-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/4520-683-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/4708-8-0x0000000000400000-0x000000000053D000-memory.dmp

        memory/4708-9-0x00000000023F0000-0x00000000023F1000-memory.dmp

        memory/4708-660-0x0000000000400000-0x000000000053D000-memory.dmp

        memory/4708-11-0x0000000000400000-0x000000000053D000-memory.dmp

        memory/4708-5-0x00000000023F0000-0x00000000023F1000-memory.dmp

        memory/4708-680-0x0000000000400000-0x000000000053D000-memory.dmp