Analysis

  • max time kernel
    150s
  • max time network
    94s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    03/05/2026, 14:35

General

  • Target
    2026-05-03_0f4858dbf603dea97c96cb2e8e1e5cc2_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 235KB
  • Sample260503-rydfaabt7v
  • SHA256 e1bc742ac140101e20da1b1bdecc18b7646f7fbbdd1f9f653522b6d423ae792f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Renames multiple (257) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Drivers directory 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-03_0f4858dbf603dea97c96cb2e8e1e5cc2_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-03_0f4858dbf603dea97c96cb2e8e1e5cc2_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5024
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5072
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4196
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a3FA4.bat
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1036
    • C:\Windows\Logo1_.exe
      C:\Windows\Logo1_.exe
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5564
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3200
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4068
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2036
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1984
  • C:\Windows\uninstall\rundl132.exe
    C:\Windows\uninstall\rundl132.exe
    1⤵
    • Drops file in Drivers directory
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2992

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RCXD8FF.tmp

        • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCXD8FF.tmp
        • Size 77KB
        • SHA256 c936005ef50b3bff07d9d168ecdc30ac4b57c2d2d5a39391c488bcf46cf0f703
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDB23.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\RCXDB23.tmp
        • Size 86KB
        • SHA256 853ee415285520ccc78789fa472e0519968eac7493a1a59e6b2747f925a715d6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDB64.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\RCXDB64.tmp
        • Size 74KB
        • SHA256 ddc48a66623342b053a85c494d3b4a3ec0af06a3fd9273268babf51859aabdfb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDA01.tmp

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\RCXDA01.tmp
        • Size 101KB
        • SHA256 1d196a6573e11c3873703132b16d8ece856901ded212b1d119d35d3a03f952d7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7z.exe.Exe

        • Path C:\Program Files\7-Zip\7z.exe.Exe
        • Size 638KB
        • SHA256 53f222e0ecc1bbefac25c250a7dfb320cda4274ee573a7ad97416a4deb6dea10
        • MD5 SHA1 SHA512 SSDEEP TLSH

        javaw.exe.Exe

        • Path C:\Program Files\Java\jdk-1.8\bin\javaw.exe.Exe
        • Size 360KB
        • SHA256 b7dba98b727454f0f3f04fd78259a7704ca621b3d757a967a5fe2dad618599a2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXCFB9.tmp

        • Path C:\Program Files\Microsoft Office 15\ClientX64\RCXCFB9.tmp
        • Size 139KB
        • SHA256 c72302210e6d343c1fb39282d9ec0d14059115c341ae179a3796133884e2ef49
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXCFDC.tmp

        • Path C:\Program Files\Mozilla Firefox\RCXCFDC.tmp
        • Size 74KB
        • SHA256 50ec062bfdc7c6a7ff24c78338ef89a19f4aff6d28eb8b284b4a1bf1854e79fc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXCFED.tmp

        • Path C:\Program Files\Mozilla Firefox\uninstall\RCXCFED.tmp
        • Size 83KB
        • SHA256 eee6b34bc8a6650341fd8dbaebf69f027518ab35daa35d3ca6bfb1b285554bdf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        vlc.exe.Exe

        • Path C:\Program Files\VideoLAN\VLC\vlc.exe.Exe
        • Size 1.0MB
        • SHA256 aa137ef9449dd8341150a4541a46da516745be896266feca968c54458221ae7f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXE057.tmp

        • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\RCXE057.tmp
        • Size 75KB
        • SHA256 7fca295c3c1baa9bfe2c13d3cb654cb9bd2ad15182c68f56431caf4b84d8190d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a3FA4.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a3FA4.bat
        • Size 896B
        • SHA256 e770725a64611745520caaa0c7d66de2004b5c62e4e04734a67b1207eae148aa
        • MD5 SHA1 SHA512 TLSH

        2026-05-03_0f4858dbf603dea97c96cb2e8e1e5cc2_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-05-03_0f4858dbf603dea97c96cb2e8e1e5cc2_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe.exe
        • Size 145KB
        • SHA256 03774966297dbdb9a54e120df6a59cb163a8a04688fc40b614a5121d71d5c6de
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Logo1_.exe

        • Path C:\Windows\Logo1_.exe
        • Size 89KB
        • SHA256 6840faf00aec3dbcc585bc9b8a8130965301c155b86910690d40e37f99e3df6c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

        • Path C:\Windows\system32\drivers\etc\hosts
        • Size 842B
        • SHA256 d9704dab05e988be3e5e7b7c020bb9814906d11bb9c31ad80d4ed1316f6bc94e
        • MD5 SHA1 SHA512 TLSH

        memory/2992-15-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/5024-8-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/5564-17-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/5564-1132-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/5564-1256-0x0000000000400000-0x0000000000425000-memory.dmp