Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    28/03/2026, 14:05

General

  • Target
    Rivalware.exe
  • Size 76.8MB
  • Sample260328-rd28xae14p
  • SHA256 bf07ed08c0eec9bc0dfb8ec5f2a1940129ddf1cd1854a5f724f2c5ac36f56124
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 64 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Hide Artifacts: Hidden Files and Directories 1 TTPs 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • Views/modifies file attributes 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Rivalware.exe
    "C:\Users\Admin\AppData\Local\Temp\Rivalware.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1408
    • C:\Users\Admin\AppData\Local\Temp\Rivalware.exe
      "C:\Users\Admin\AppData\Local\Temp\Rivalware.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5096
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "attrib +h "C:\Users\Admin\AppData\Local\Temp\Rivalware.exe""
        3⤵
        • Hide Artifacts: Hidden Files and Directories
        • Suspicious use of WriteProcessMemory
        PID:2268
        • C:\Windows\system32\attrib.exe
          attrib +h "C:\Users\Admin\AppData\Local\Temp\Rivalware.exe"
          4⤵
          • Views/modifies file attributes
          PID:240
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v visuals /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe" /f"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4900
        • C:\Windows\system32\reg.exe
          reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v visuals /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe" /f
          4⤵
          • Adds Run key to start application
          PID:4376
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "attrib +h "C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe""
        3⤵
        • Hide Artifacts: Hidden Files and Directories
        • Suspicious use of WriteProcessMemory
        PID:4040
        • C:\Windows\system32\attrib.exe
          attrib +h "C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe"
          4⤵
          • Views/modifies file attributes
          PID:3828
      • C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:3572
        • C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4508
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c "attrib +h "C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe""
            5⤵
            • Hide Artifacts: Hidden Files and Directories
            • Suspicious use of WriteProcessMemory
            PID:4444
            • C:\Windows\system32\attrib.exe
              attrib +h "C:\Users\Admin\AppData\Roaming\Microsoft\Rivalware V7.exe"
              6⤵
              • Views/modifies file attributes
              PID:716
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c "wmic os get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1812
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic os get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2664

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        81d243bd2c585b0f4821__mypyc.cp313-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\81d243bd2c585b0f4821__mypyc.cp313-win_amd64.pyd
        • Size 205KB
        • SHA256 ae870cc134b29f532c4f63ce721e61539f45c93a7f38c1312ed472d3bca13502
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _imaging.cp313-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\PIL\_imaging.cp313-win_amd64.pyd
        • Size 2.5MB
        • SHA256 8a3b959721dc32f808dba6834b2bf167e98fe0068d067078b2bc544670d815bf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _imagingft.cp313-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\PIL\_imagingft.cp313-win_amd64.pyd
        • Size 2.1MB
        • SHA256 9dc210ba1cb38382e5c350acba91133b0533e9a06e234f48bbef0e13e652d7ce
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\VCRUNTIME140.dll
        • Size 117KB
        • SHA256 052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VCRUNTIME140_1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\VCRUNTIME140_1.dll
        • Size 48KB
        • SHA256 6a99bc0128e0c7d6cbbf615fcc26909565e17d4ca3451b97f8987f9c6acbc6c8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _asyncio.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_asyncio.pyd
        • Size 71KB
        • SHA256 53b36f719ee1905e56003a5d8af169fe05917787af66d00c86ceaf996a7d5caf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_bz2.pyd
        • Size 84KB
        • SHA256 df21ec68d062eb375dba4ea8332aa859d0d4b91f9eddc45e1cebfd54742044e2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ctypes.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_ctypes.pyd
        • Size 131KB
        • SHA256 c95add0b1a541b723c9090c23abeadb8f642b31bb33f2e1ae005fbb8a331ef73
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _decimal.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_decimal.pyd
        • Size 279KB
        • SHA256 e80e2c4533958c717f40238155bd9f4101df23f832e1dddb8be4e83f7ad3355a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _elementtree.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_elementtree.pyd
        • Size 133KB
        • SHA256 739dcb145cb775608f16fc4f99cf923329b2108ea5ff2a5094baaf5fa7be64c9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _hashlib.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_hashlib.pyd
        • Size 67KB
        • SHA256 8770291fed8af2ea8e9fd2ed695e8c56f8e26848c91d320d1a22ddf404d02116
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_lzma.pyd
        • Size 155KB
        • SHA256 1ddce9934889905b482f8587656f28ae1988365a55ae86ca4438873fd0184340
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _multiprocessing.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_multiprocessing.pyd
        • Size 37KB
        • SHA256 f812b488ea8ae37c7da58f3068a1d08b1c66f9a7858610652bc4329843e0b876
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _overlapped.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_overlapped.pyd
        • Size 56KB
        • SHA256 3555e7a0250f379e12a7be5c736477246e411d58cea35be51226956038ad72a6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _queue.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_queue.pyd
        • Size 34KB
        • SHA256 0d316914b426e71bbd263b78fe23622ac1c8e6f86bae42ef6ffbb609e6257e3a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _socket.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_socket.pyd
        • Size 84KB
        • SHA256 a69f3a7e281009c86868dd56c2e933ca2634a3979fdc2a4ca751ee4ef5e6ece7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _sqlite3.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_sqlite3.pyd
        • Size 127KB
        • SHA256 0c71b7c8fcdd0d9b32b68b4b133380d3d57b5866056df7fe2bc2dde2d552cdd2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ssl.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_ssl.pyd
        • Size 177KB
        • SHA256 eb860d3a4ad45e3d7975c5fdc3994798ee9b7ab685fa920c2656878b7dcd3029
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cp1252.enc

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_tcl_data\encoding\cp1252.enc
        • Size 1KB
        • SHA256 741859cf238c3a63bbb20ec6ed51e46451372bb221cfff438297d261d0561c2e
        • MD5 SHA1 SHA512 TLSH

        _tkinter.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_tkinter.pyd
        • Size 68KB
        • SHA256 f767ebb7a0e260cbc0ca633f4ffe94be90101af4ad2b8906d44dd98bf5608b7c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _uuid.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_uuid.pyd
        • Size 27KB
        • SHA256 118d5c36b649da58313ea5b0617dac96d2e35fc08739efa919547e189fb4d65c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _wmi.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\_wmi.pyd
        • Size 38KB
        • SHA256 1800304e19246edfdb56a14ffabc129b6b5b73e25dbedd2302e75a9eb4d78352
        • MD5 SHA1 SHA512 SSDEEP TLSH

        base_library.zip

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\base_library.zip
        • Size 1.3MB
        • SHA256 85f5a0c783f6919eceb90770803bd152ca4d2e0b8404dc6822bc182717b044f2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        __init__.py

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\cv2\__init__.py
        • Size 6KB
        • SHA256 957a91bfd98ffb07a10cd789b7c5c46806568476b61e34c7ad56a00092b981a5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libcrypto-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\libcrypto-3.dll
        • Size 5.0MB
        • SHA256 e03dd02fdcfb791981c9962827cfcf495f2a47a514c1526efb57f847a9df514a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libffi-8.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libssl-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\libssl-3.dll
        • Size 776KB
        • SHA256 1e4bc0638682bfcbb36f4465d6a2e9944d917a60f05ecc8ddf9e96847e05e13f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libscipy_openblas64_-4bb64bb73b19ae7523581172b5c4a821.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\numpy.libs\libscipy_openblas64_-4bb64bb73b19ae7523581172b5c4a821.dll
        • Size 19.5MB
        • SHA256 4bb64bb73b19ae7523581172b5c4a8216eb66d283c4297fcd9bd100c45e9110e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        msvcp140-a4c2229bdc2a2a630acdc095b4d86008.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\numpy.libs\msvcp140-a4c2229bdc2a2a630acdc095b4d86008.dll
        • Size 561KB
        • SHA256 a4c2229bdc2a2a630acdc095b4d86008e5c3e3bc7773174354f3da4f5beb9cde
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _multiarray_umath.cp313-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\numpy\_core\_multiarray_umath.cp313-win_amd64.pyd
        • Size 3.5MB
        • SHA256 f587e600d4445db06571673cf4abcbdf64ebaf09886767e636cef13fc11a0bb5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        pyexpat.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\pyexpat.pyd
        • Size 212KB
        • SHA256 c00c4177b57a4e519fdb0e14381ec03f1ef4d627ee10280382e8e06030c61958
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\python3.dll
        • Size 70KB
        • SHA256 ca9313dce359c129edc385af4d0c2322e6b3fdad4969d5c2fbc36e0886da58bf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python313.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\python313.dll
        • Size 5.8MB
        • SHA256 265a27242ee97f81eeac6a556fd7de56baff2222f2334386d8f948e359a649d8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        select.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\select.pyd
        • Size 32KB
        • SHA256 7d061afc87ba79f90878af39a1ebc7b4cf238d52e5bbe16ff7e176cbba266ec0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Lorem ipsum.txt

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\setuptools\_vendor\jaraco\text\Lorem ipsum.txt
        • Size 1KB
        • SHA256 37fedcffbf73c4eb9f058f47677cb33203a436ff9390e4d38a8e01c9dad28e0b
        • MD5 SHA1 SHA512 TLSH

        sqlite3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\sqlite3.dll
        • Size 1.5MB
        • SHA256 596991399257e1f12bba9169b6e78c29d6327a82ad92f757ee7ba7f323f65469
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tcl86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\tcl86t.dll
        • Size 1.8MB
        • SHA256 e7c56d36bd0398b303e91df09a0c6d5f4d9a35414c45d53d54479343f8aa3310
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tk86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\tk86t.dll
        • Size 1.5MB
        • SHA256 0cbe59fbf2843fabb12c66b1030eec989e3b7025953931cff32680b8254e53aa
        • MD5 SHA1 SHA512 SSDEEP TLSH

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\unicodedata.pyd
        • Size 695KB
        • SHA256 85ec764b02ad20bd168779f4716841d8291d3be0d3a243dcfb05abe684a517dd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        zlib1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI14082\zlib1.dll
        • Size 144KB
        • SHA256 4459093ac8b08402edd8eb2dff2f212ae35fc66606ecad25b4553bb120948701
        • MD5 SHA1 SHA512 SSDEEP TLSH

        INSTALLER

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI35722\lz4-4.4.5.dist-info\INSTALLER
        • Size 4B
        • SHA256 ceebae7b8927a3227e5303cf5e0f1f7b34bb542ad7250ac03fbcde36ec2f1508
        • MD5 SHA1 SHA512

        memory/4508-2361-0x00007FFC7D030000-0x00007FFC7D059000-memory.dmp

        memory/4508-2362-0x00007FFC6B640000-0x00007FFC6C9BF000-memory.dmp

        memory/5096-1229-0x00007FFC7D030000-0x00007FFC7D059000-memory.dmp

        memory/5096-1231-0x00007FFC6B640000-0x00007FFC6C9BF000-memory.dmp