Resubmissions

05/02/2025, 08:55

250205-kvkxmayrcz10

05/02/2025, 06:37

250205-hdsvsswldm10

17/03/2024, 04:49

240317-ffz1saef6510

Analysis

  • max time kernel
    168s
  • max time network
    170s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/03/2024, 04:49

General

  • Target
    ransomwares/Fantom/Fantom.exe
  • Size 261KB
  • Sample240317-ffz1saef65
  • SHA256 f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Program Files\7-Zip\Lang\DECRYPT_YOUR_FILES.HTML

Ransom Note
  • <html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>Y0OHRggYJLzItzRyw3Ap9cZ46x5Gxb0ZhqSlmZbObVPC7hoUtxk0nocqPwnHVThCxEaIwAza4iP1leOM/7aM1t5IFInSB4oqyWGYSUsWBZzevxGMhQ6IAQTVkPbuaeTI5E+WE1nDZCpSb63MCRJ5+G4gQ3CiJsKNW3LLUeQQ14UnaLspwBoufv2nsPpeGrOH2lobyUG+gG8CmxuQOxco6gLrRHj5KQ573q844LdkTOpgm+isTvryfosuN54o87IoOmS8N36tAkGOzCz/C59pL+KqBYuZsla6iS4lJRWLI7fI9GtpX4CqwH7fDy11Nmb5xPjtdb2I7Zn9BVAythBzHw==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Signatures

  • Fantom

    Ransomware which hides encryption process behind fake Windows Update screen.

  • Renames multiple (961) files with added filename extension

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

  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

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

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ransomwares\Fantom\Fantom.exe
    "C:\Users\Admin\AppData\Local\Temp\ransomwares\Fantom\Fantom.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      PID:232

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        DECRYPT_YOUR_FILES.HTML

        • Path C:\Program Files\7-Zip\Lang\DECRYPT_YOUR_FILES.HTML
        • Size 1KB
        • SHA256 eb6085dec70c5b6a59f49eb8126646233165ce414af40490dcfba5a86a448838
        • MD5 SHA1 SHA512

        win32_LinkNoDrop32x32.gif

        • Path C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_LinkNoDrop32x32.gif
        • Size 160B
        • SHA256 ac11d4811ac2793de6b72bda6c43a57e495948b27c2d5c74b8a1c10b0f3cdb0f
        • MD5 SHA1 SHA512

        THIRDPARTYLICENSEREADME-JAVAFX.txt

        • Path C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt
        • Size 192B
        • SHA256 d583f3522cdb3d7fd9e4022857accb5c4a570373f9b4fc52ae053e66bb76ee62
        • MD5 SHA1 SHA512

        THIRDPARTYLICENSEREADME.txt

        • Path C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME.txt
        • Size 192B
        • SHA256 9746033832560cb87432f8a068b4d35db126a1f65c1180fb61e3f6355437c0f2
        • MD5 SHA1 SHA512

        directshow.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\directshow.md
        • Size 1KB
        • SHA256 0b2a00ae80e12bd3b33f63f7b5b78a740d53c8abd7572916f6fa96e5238e67fd
        • MD5 SHA1 SHA512

        glib.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\glib.md
        • Size 31KB
        • SHA256 678c0e2e126cf174b2c1ab6e1b2cdcd9d4949374626ac5f32f81f1b01a26c5bd
        • MD5 SHA1 SHA512 SSDEEP

        gstreamer.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\gstreamer.md
        • Size 34KB
        • SHA256 88009dece3f932267b3515319a928970d1bc96f639d3e33822b5dbb978eb24ec
        • MD5 SHA1 SHA512 SSDEEP

        icu_web.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\icu_web.md
        • Size 23KB
        • SHA256 3d80f179d157830bd1bba044938cb242c18a014edecf63d724119d878354ff8a
        • MD5 SHA1 SHA512 SSDEEP

        jpeg_fx.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\jpeg_fx.md
        • Size 2KB
        • SHA256 19dd67992f56d22124ed620cd657a370d56ab523cdb134db1fd0db1a36e51119
        • MD5 SHA1 SHA512

        libffi.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\libffi.md
        • Size 1KB
        • SHA256 57154ee333dfa115990cd06ad32ee473b4e2b7e03db7d3086805a0d68795c814
        • MD5 SHA1 SHA512

        libxml2.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\libxml2.md
        • Size 3KB
        • SHA256 80598fb6fca4e00cf418127a8d6c210abc28144902ad8404b11c14cfbd0a5cd6
        • MD5 SHA1 SHA512

        libxslt.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\libxslt.md
        • Size 2KB
        • SHA256 a871fffa3577a3a1a1244815ca085c51fb0ad07eb8ab85e957d0e3c5c7f5f9f6
        • MD5 SHA1 SHA512

        mesa3d.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\mesa3d.md
        • Size 5KB
        • SHA256 bb807807c03ce241fbf408231fa988d8b49c57dab48bcdb381639b7c54d5557d
        • MD5 SHA1 SHA512 SSDEEP

        public_suffix.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\public_suffix.md
        • Size 17KB
        • SHA256 903abb6221a3a1fd9144502bf574c1cb349613c3d397c39a75b830b309dcda69
        • MD5 SHA1 SHA512 SSDEEP

        webkit.md

        • Path C:\Program Files\Java\jre-1.8\legal\javafx\webkit.md
        • Size 320KB
        • SHA256 06ac8a0dbf08a61378ddc22be06b5990800372b20ad53ba97422ac5dc4db13df
        • MD5 SHA1 SHA512 SSDEEP

        asm.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\asm.md
        • Size 1KB
        • SHA256 848490c4f2dc2c66113dc6fefe01ddcd246d728ab7ebe16cb73019feada90393
        • MD5 SHA1 SHA512

        bcel.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\bcel.md
        • Size 10KB
        • SHA256 4921096a416a689c769f0f9e60b309857d46c97b96bcd07b1b639c0cd0b30f1e
        • MD5 SHA1 SHA512 SSDEEP

        cldr.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\cldr.md
        • Size 3KB
        • SHA256 9dc84b46afd2fc2a17beccdbd1e47cceb75c8d0fb241da8d06792afcfbdb7d82
        • MD5 SHA1 SHA512

        colorimaging.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\colorimaging.md
        • Size 176B
        • SHA256 61f4a13744204e8a04772314758a8a53617471876e4cd0b56b1bb755753ecceb
        • MD5 SHA1 SHA512

        cryptix.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\cryptix.md
        • Size 1KB
        • SHA256 b5dd53dc91733fe1425c250feeccb28e5c756c8a8eea2657333080f5bf69c227
        • MD5 SHA1 SHA512

        dom.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\dom.md
        • Size 3KB
        • SHA256 37474948738b061705122721dab66cce57fd109b2b675215852d1a0c6cf39781
        • MD5 SHA1 SHA512

        dynalink.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\dynalink.md
        • Size 1KB
        • SHA256 949728673ade71aded0a637360350607c60f5c0b7189c7f09ca067f33aeb3882
        • MD5 SHA1 SHA512

        ecc.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\ecc.md
        • Size 28KB
        • SHA256 fd121bd1fc3385aa57d0b1498dc73951ee358dab659391896104745c620089de
        • MD5 SHA1 SHA512 SSDEEP

        freebxml.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\freebxml.md
        • Size 2KB
        • SHA256 3c2e6bfde5b72e55729c22365a604701833f3873f47954a378559f94223449c7
        • MD5 SHA1 SHA512

        giflib.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\giflib.md
        • Size 1KB
        • SHA256 d290352da38a019081c460f2477c4c1e7ccfc1506f27a6cf93bd60341e026530
        • MD5 SHA1 SHA512

        icu.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\icu.md
        • Size 2KB
        • SHA256 4a86c6a67518453f62104efb3387a7f2d5f99c1bdec952576790f05326f7a1ba
        • MD5 SHA1 SHA512

        jcup.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\jcup.md
        • Size 1KB
        • SHA256 c12cf05770e477ee638b403840f4f83484f28f193cd0ee630da895e8fdde6047
        • MD5 SHA1 SHA512

        joni.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\joni.md
        • Size 1KB
        • SHA256 1c99e93653a02ff03faeec3def8616e788d6b3f77a7586ba2f72fec254c2971a
        • MD5 SHA1 SHA512

        jopt-simple.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\jopt-simple.md
        • Size 1KB
        • SHA256 d2f38a4189c48bd0995020259d37e0387e0d17498283390a4070e0a205a75f69
        • MD5 SHA1 SHA512

        jpeg.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\jpeg.md
        • Size 3KB
        • SHA256 d81b665d1f8a9d13e9931d5ca40133bf15356ac55c5e9c5419f9a419529766f8
        • MD5 SHA1 SHA512

        lcms.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\lcms.md
        • Size 2KB
        • SHA256 91fc4c75579aef0f53bce77bceeae66c2b9a68e41a8b1986ab7d7b94da53be34
        • MD5 SHA1 SHA512

        libpng.md.fantom

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\libpng.md.fantom
        • Size 6KB
        • SHA256 3d6dd0defc18afbb86bb7906b30028cf286eb7868832615003e873b19acc2ca1
        • MD5 SHA1 SHA512 SSDEEP

        mesa3d.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\mesa3d.md
        • Size 5KB
        • SHA256 3c3a34b226932dae6bfe4a09dadc60762722f7749f0c0d8089c9ea6eddefea9a
        • MD5 SHA1 SHA512 SSDEEP

        pkcs11cryptotoken.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\pkcs11cryptotoken.md
        • Size 3KB
        • SHA256 3b9943d718b45f5796023218a3a01794c570a2a5a4a8aa669022d337740fd31b
        • MD5 SHA1 SHA512

        pkcs11wrapper.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\pkcs11wrapper.md
        • Size 2KB
        • SHA256 bb58e1ae59c53fbbbd5fa2c0f31d28ff8105abc457adcca7b74a09ec1c0a65e0
        • MD5 SHA1 SHA512

        relaxngcc.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\relaxngcc.md
        • Size 2KB
        • SHA256 bc70e2ef080032791dbd989b0f5e03c1ccbd2696890b08c998162c600e8af73a
        • MD5 SHA1 SHA512

        relaxngdatatype.md.fantom

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\relaxngdatatype.md.fantom
        • Size 1KB
        • SHA256 51ff00530875e3612a75a7e6a61d8471414800edf4c38ef6f07802e33d158229
        • MD5 SHA1 SHA512

        relaxngom.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\relaxngom.md
        • Size 1KB
        • SHA256 f114f22b086be3a8a3d163a597526ce2ba5ff0587781fd82e3617e603b5a4610
        • MD5 SHA1 SHA512

        santuario.md.fantom

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\santuario.md.fantom
        • Size 11KB
        • SHA256 f1c54abfb989117e0ee810ca789fb22174abf7d507136a1b7dfc9f3ca353ef7c
        • MD5 SHA1 SHA512 SSDEEP

        thaidict.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\thaidict.md
        • Size 1KB
        • SHA256 47819082249bb03e044386fe08b44d33255d75ca40de0843cd25e6da451d5229
        • MD5 SHA1 SHA512

        unicode.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\unicode.md
        • Size 2KB
        • SHA256 18d145f57f3e4bcbee598fdac4814f7c701eb209524d212a86b2e5400665ad6c
        • MD5 SHA1 SHA512

        xalan.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\xalan.md
        • Size 11KB
        • SHA256 5f6bde68459224a08beec69871eba8c8473d6a4170658ccaace68ba9763350af
        • MD5 SHA1 SHA512 SSDEEP

        xerces.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\xerces.md
        • Size 11KB
        • SHA256 5adebba397cc742199ce2d00c0c5e0aa6a98de34cc8c0032299668a78a97358d
        • MD5 SHA1 SHA512 SSDEEP

        xmlresolver.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\xmlresolver.md
        • Size 11KB
        • SHA256 f438c34606643a25dd0d91d7e30e92ccd81ce60e5521d82607621654c0fe8b67
        • MD5 SHA1 SHA512 SSDEEP

        zlib.md

        • Path C:\Program Files\Java\jre-1.8\legal\jdk\zlib.md
        • Size 1024B
        • SHA256 51885fcea5c9bf35b518ebc821dc0dd6057c951984d6c7b282869e6a6df49de0
        • MD5 SHA1 SHA512

        ClientSub2019_eula.txt

        • Path C:\Program Files\Microsoft Office\root\Office16\1033\ClientSub2019_eula.txt
        • Size 48B
        • SHA256 d3023dea1d7c6ddcf7290d71d2bebdc3cf14555d17ed2e32a14c8b9b86090d38
        • MD5 SHA1 SHA512

        WindowsUpdate.exe

        • Path C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
        • Size 21KB
        • SHA256 489f2546a4ad1e0e0147d1ca2fd8801785689f67fb850171ccbaa6306a152065
        • MD5 SHA1 SHA512 SSDEEP

        memory/232-149-0x00000000008E0000-0x00000000008EC000-memory.dmp

        memory/232-611-0x00007FFFC53D0000-0x00007FFFC5E91000-memory.dmp

        memory/232-150-0x00007FFFC53D0000-0x00007FFFC5E91000-memory.dmp

        memory/232-155-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

        memory/232-612-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

        memory/1672-47-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-63-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-136-0x0000000004B80000-0x0000000004B90000-memory.dmp

        memory/1672-135-0x0000000005230000-0x000000000523A000-memory.dmp

        memory/1672-132-0x0000000004B80000-0x0000000004B90000-memory.dmp

        memory/1672-134-0x0000000002560000-0x0000000002561000-memory.dmp

        memory/1672-133-0x0000000004A30000-0x0000000004AC2000-memory.dmp

        memory/1672-130-0x0000000075320000-0x0000000075AD0000-memory.dmp

        memory/1672-131-0x0000000004B90000-0x0000000005134000-memory.dmp

        memory/1672-69-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-67-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-65-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-41-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-61-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-59-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-57-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-55-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-53-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-51-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-49-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-0-0x0000000002360000-0x0000000002392000-memory.dmp

        memory/1672-45-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-137-0x0000000000720000-0x000000000072E000-memory.dmp

        memory/1672-43-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-25-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-37-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-35-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-33-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-31-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-29-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-27-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-39-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-23-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-21-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-19-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-17-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-15-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-13-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-11-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-9-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-7-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-6-0x0000000002530000-0x000000000255B000-memory.dmp

        memory/1672-5-0x0000000002530000-0x0000000002562000-memory.dmp

        memory/1672-3-0x0000000004B80000-0x0000000004B90000-memory.dmp

        memory/1672-4-0x0000000004B80000-0x0000000004B90000-memory.dmp

        memory/1672-2-0x0000000004B80000-0x0000000004B90000-memory.dmp

        memory/1672-1-0x0000000075320000-0x0000000075AD0000-memory.dmp