Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/08/2026, 15:52

General

  • Target
    Fallen_Checker.exe
  • Size 18.0MB
  • Sample260816-tbhsladr21
  • SHA256 56942d244c0cb10fb65ed0138c724d71f0225abb0d93d0c993f90f2de3a145a2
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Enumerates VirtualBox registry keys 2 TTPs 4 IoCs
  • Looks for VMWare services registry key. 1 TTPs 3 IoCs
  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 31 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 6 IoCs
  • Runs ping.exe 1 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 34 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fallen_Checker.exe
    "C:\Users\Admin\AppData\Local\Temp\Fallen_Checker.exe"
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:5724
    • C:\Users\Admin\AppData\Local\Temp\Fallen_Checker.exe
      C:\Users\Admin\AppData\Local\Temp\Fallen_Checker.exe
      2⤵
      • Enumerates VirtualBox registry keys
      • Looks for VMWare services registry key.
      • Identifies Wine through registry keys
      • Loads dropped DLL
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4788
      • C:\Windows\SYSTEM32\cmd.exe
        cmd.exe /c C:\Users\Admin\AppData\Local\Temp\_sdw_4788.cmd
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:2836
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:3264
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:2660
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:4500
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:1736

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        Fallen_Survival.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\Fallen_Survival.dll
        • Size 28.5MB
        • SHA256 009c937437d05153a818edb02481d9eeca5cd2ae0b7182aec0f9a0359f55131a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _imaging.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\PIL\_imaging.pyd
        • Size 2.5MB
        • SHA256 6dfd10a98bc81a1999e2b5ddb8be8c1cfb9a2c8e10258c56a52ee0d8930d3d7f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\VCRUNTIME140.dll
        • Size 116KB
        • SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_bz2.pyd
        • Size 82KB
        • SHA256 bd8621fcc901fa1de3961d93184f61ea71068c436794af2a4449738ccf949946
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ctypes.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_ctypes.pyd
        • Size 122KB
        • SHA256 543ce9d6dc3693362271a2c6e7d7fc07ad75327e0b0322301dd29886467b0b0e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _hashlib.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_hashlib.pyd
        • Size 64KB
        • SHA256 6c50c9801a5caf0bb52b384f9a0d5a4aa182ca835f293a39e8999cf6edf2f087
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_lzma.pyd
        • Size 155KB
        • SHA256 22d10e2d6ad3e3ed3c49eb79ab69a81aaa9d16aeca7f948da2fe80877f106c16
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _queue.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_queue.pyd
        • Size 31KB
        • SHA256 d43dca0e00c3c11329b68177e967cf5240495c4786f5afa76ac4f267c3a5cdb9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _socket.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_socket.pyd
        • Size 81KB
        • SHA256 24017d664af20ee3b89514539345caac83eca34825fcf066a23e8a4c99f73e6d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _sqlite3.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_sqlite3.pyd
        • Size 121KB
        • SHA256 f3ca1d6b1ab8bb8d6f35a24fc602165e6995e371226e98ffeeed2eeec253c9df
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ssl.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_ssl.pyd
        • Size 173KB
        • SHA256 2b6f1b1ac47cb7878b62e8d6bb587052f86ca8145b05a261e855305b9ca3d36c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _tkinter.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_tkinter.pyd
        • Size 62KB
        • SHA256 198e2cee4502f69dfff2dd029308febce3d1e1d4dd9fe122e891bf95c7910d54
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _uuid.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_uuid.pyd
        • Size 24KB
        • SHA256 d462f34aca50d1f37b9ea03036c881ee4452e1fd37e1b303cd6daaecc53e260e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _wmi.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\_wmi.pyd
        • Size 35KB
        • SHA256 0342916a60a7b39bbd5753d85e1c12a4d6f990499753d467018b21cefa49cf32
        • MD5 SHA1 SHA512 SSDEEP TLSH

        md.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\charset_normalizer\md.pyd
        • Size 10KB
        • SHA256 76a535e0953b48a2348b877236a5799cf1d01cb21422c7f17942f35367cb5c8f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        md__mypyc.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\charset_normalizer\md__mypyc.pyd
        • Size 124KB
        • SHA256 0830c3ff6e6f8394a7df170f95fc10de65ab9f22b30f9d2383f0cc299b8df101
        • MD5 SHA1 SHA512 SSDEEP TLSH

        blue.json

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\customtkinter\assets\themes\blue.json
        • Size 4KB
        • SHA256 c9417470c16ced7a43d6c4a8e027afa6edc62c24d5aee7c4c2dcd11385964d3b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dark-blue.json

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\customtkinter\assets\themes\dark-blue.json
        • Size 4KB
        • SHA256 6a57fa6f8fb8961a30ce6429522b180d76e3af9b8e0daac259059841386a6bd3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libcrypto-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\libcrypto-3.dll
        • Size 4.9MB
        • SHA256 2a234b5aa20c3faecf725bbb54fb33f3d94543f78fa7045408e905593e49960a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libffi-8.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libssl-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\libssl-3.dll
        • Size 771KB
        • SHA256 41ad1a04ca27a7959579e87fbbda87c93099616a64a0e66260c983381c5570d1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _psutil_windows.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\psutil\_psutil_windows.pyd
        • Size 69KB
        • SHA256 0035450801bd7d938e9e146c5ec28e619cb5a5f4a18cdc53ac7e9734c7f94f78
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\python3.dll
        • Size 66KB
        • SHA256 a5bb3eb6fdfd23e0d8b2e4bccd6016290c013389e06daae6cb83964fa69e2a4f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python312.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\python312.dll
        • Size 6.7MB
        • SHA256 0cc4e557972488eb99ea4aeb3d29f3ade974ef3bcd47c211911489a189a0b6f2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        select.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\select.pyd
        • Size 29KB
        • SHA256 74cca85600e7c17ea6532b54842e26d3cae9181287cdf5a4a3c50af4dab785e5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        sqlite3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\sqlite3.dll
        • Size 1.4MB
        • SHA256 17d547994008f1626be2877497912687cb3ebd9a407396804310fd12c85aead4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tcl86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\tcl86t.dll
        • Size 1.7MB
        • SHA256 28b61545d3a53460f41c20dacf0e0df2ba687a5c85f9ed5c34dbfc7ed2f23e3e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        auto.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\tcl\auto.tcl
        • Size 21KB
        • SHA256 517204ee436d08efc287abc97433c3bffcaf42ec6592a3009b9fd3b985ad772c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cp1252.enc

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\tcl\encoding\cp1252.enc
        • Size 1KB
        • SHA256 741859cf238c3a63bbb20ec6ed51e46451372bb221cfff438297d261d0561c2e
        • MD5 SHA1 SHA512 TLSH

        init.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\tcl\init.tcl
        • Size 25KB
        • SHA256 7a103a85413988456c2ad615c879bbcb4d91435bcfbbe23393e0eb52b56af6e2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tclIndex

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\tcl\tclIndex
        • Size 5KB
        • SHA256 ddf7e42def37888ad0a564aa4f8ca95f4eec942cebebfca851d35515104d5c89
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tk86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\tk86t.dll
        • Size 1.5MB
        • SHA256 23a195e1e3922215148e1e09a249b4fe017a73b3564af90b0f6fd4d9e5dda4da
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tk.tcl

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\tk\tk.tcl
        • Size 23KB
        • SHA256 1d5e7518afc1382e36bf13fc5196c8a7cd93a4e9d24acf445522564245a489b0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\unicodedata.pyd
        • Size 1.1MB
        • SHA256 2a50d629895a05b10a262acf333e7a4a31db5cb035b70d14d1a4be1c3e27d309
        • MD5 SHA1 SHA512 SSDEEP TLSH

        zlib1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\onefile_5724_134348_y64vmo_sSls\zlib1.dll
        • Size 141KB
        • SHA256 c89c8a2fcf11d8191c7690027055431906aae827fc7f443f0908ad062e7e653e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4788-1038-0x00007FF6A4250000-0x00007FF6A5489000-memory.dmp

        memory/4788-1040-0x00007FFDE7EB0000-0x00007FFDE7EDA000-memory.dmp

        memory/4788-1039-0x00007FFDD3CF0000-0x00007FFDD59E6000-memory.dmp

        memory/4788-1042-0x00007FF6A4250000-0x00007FF6A5489000-memory.dmp

        memory/4788-1044-0x00007FFDE7EB0000-0x00007FFDE7EDA000-memory.dmp

        memory/4788-1043-0x00007FFDD3CF0000-0x00007FFDD59E6000-memory.dmp

        memory/5724-1037-0x00007FF6A4250000-0x00007FF6A5489000-memory.dmp

        memory/5724-1938-0x00007FF6A4250000-0x00007FF6A5489000-memory.dmp