Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/06/2026, 15:38

General

  • Target
    Cwelium.exe
  • Size 13.6MB
  • Sample260623-s3fa4sd14x
  • SHA256 44647152284cb7caed6cfe797875f31f1c4cb1f170d4ee58e8e1510def68697a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 23 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Cwelium.exe
    "C:\Users\Admin\AppData\Local\Temp\Cwelium.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4988
    • C:\Users\Admin\AppData\Local\Temp\Cwelium.exe
      C:\Users\Admin\AppData\Local\Temp\Cwelium.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3468
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c cls
        3⤵
          PID:4176
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c cls
          3⤵
            PID:4560
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c cls
            3⤵
              PID:3784
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c cls
              3⤵
                PID:4268
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c cls
                3⤵
                  PID:5020
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /c cls
                  3⤵
                    PID:3952
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c cls
                    3⤵
                      PID:3752
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /c cls
                      3⤵
                        PID:776
                      • C:\Windows\system32\cmd.exe
                        C:\Windows\system32\cmd.exe /c cls
                        3⤵
                          PID:1624
                        • C:\Windows\system32\cmd.exe
                          C:\Windows\system32\cmd.exe /c cls
                          3⤵
                            PID:4760
                          • C:\Windows\system32\cmd.exe
                            C:\Windows\system32\cmd.exe /c cls
                            3⤵
                              PID:4116
                            • C:\Windows\system32\cmd.exe
                              C:\Windows\system32\cmd.exe /c cls
                              3⤵
                                PID:4532
                              • C:\Windows\system32\cmd.exe
                                C:\Windows\system32\cmd.exe /c cls
                                3⤵
                                  PID:972
                                • C:\Windows\system32\cmd.exe
                                  C:\Windows\system32\cmd.exe /c cls
                                  3⤵
                                    PID:2500
                              • C:\Windows\System32\rundll32.exe
                                C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                1⤵
                                  PID:696

                                Network

                                      MITRE ATT&CK Enterprise v16

                                      Replay Monitor

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                                      Downloads

                                      _ctypes.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\_ctypes.pyd
                                      • Size 122KB
                                      • SHA256 6c5f31bef3fdbff31beac0b1a477be880dda61346d859cf34ca93b9291594d93
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      _lzma.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\_lzma.pyd
                                      • Size 156KB
                                      • SHA256 a46189c5bd0302029847fed934f481835cb8d06470ea3d6b97ada7d325218a9f
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      _uuid.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\_uuid.pyd
                                      • Size 25KB
                                      • SHA256 8ae23bfa84ce64c3240c61bedb06172bfd76be2ad30788d4499cb24047fce09f
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      cacert.pem

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\certifi\cacert.pem
                                      • Size 292KB
                                      • SHA256 94edeb66e91774fcae93a05650914e29096259a5c7e871a1f65d461ab5201b47
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      libffi-8.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\libffi-8.dll
                                      • Size 38KB
                                      • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      libssl-3.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\libssl-3.dll
                                      • Size 774KB
                                      • SHA256 2e4d35b681a172d3298caf7dc670451be7a8ba27c26446efc67470742497a950
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      select.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\select.pyd
                                      • Size 30KB
                                      • SHA256 00bd8bb6dec8c291ec14c8ddfb2209d85f96db02c7a3c39903803384ff3a65e5
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      tls-client-64.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\tls_client\dependencies\tls-client-64.dll
                                      • Size 17.8MB
                                      • SHA256 b177778656455f6b8482154238d323a3de4d74f2a8b7a62bd973251a259edb87
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      unicodedata.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\ONEFIL~1\unicodedata.pyd
                                      • Size 1.1MB
                                      • SHA256 bf669344d1b1c607d10304be47d2a2fb572e043109181e2c5c1038485af0c3d7
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      Cwelium.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\Cwelium.dll
                                      • Size 15.2MB
                                      • SHA256 6154e8358ee068558b9e9b06737f696651d796697cda15debc4164eebc6d3302
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      _bz2.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\_bz2.pyd
                                      • Size 83KB
                                      • SHA256 cb15d6cc7268d3a0bd17d9d9cec330a7c1768b1c911553045c73bc6920de987f
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      _hashlib.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\_hashlib.pyd
                                      • Size 64KB
                                      • SHA256 43acecdc00dd5f9a19b48ff251106c63c975c732b9a2a7b91714642f76be074d
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      _queue.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\_queue.pyd
                                      • Size 31KB
                                      • SHA256 0a6acfd24dfbaa777460c6d003f71af473d5415607807973a382512f77d075fa
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      _socket.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\_socket.pyd
                                      • Size 81KB
                                      • SHA256 67aca001d36f2fce6d88dbf46863f60c0b291395b6777c22b642198f98184ba3
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      _ssl.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\_ssl.pyd
                                      • Size 174KB
                                      • SHA256 fa5e6fe9545f83704f78316e27446a0026fbebb9c0c3c63faed73a12d89784d4
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      _wmi.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\_wmi.pyd
                                      • Size 36KB
                                      • SHA256 73b7ee3156ef63d6eb7df9900ef3d200a276df61a70d08bd96f5906c39a3ac32
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      md.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\charset_normalizer\md.pyd
                                      • Size 10KB
                                      • SHA256 ecf12e2c0a00c0ed4e2343ea956d78eed55e5a36ba49773633b2dfe7b04335c0
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      md__mypyc.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\charset_normalizer\md__mypyc.pyd
                                      • Size 120KB
                                      • SHA256 4107b1d6f11d842074a9f21323290bbe97e8eed4aa778fbc348ee09cc4fa4637
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      libcrypto-3.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\libcrypto-3.dll
                                      • Size 5.0MB
                                      • SHA256 4e5d5d20d6d31e72ab341c81e97b89e514326c4c861b48638243bdf0918cfa43
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      python312.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\python312.dll
                                      • Size 6.6MB
                                      • SHA256 c045b57348c21f5f810bae60654ae39490846b487378e917595f1f95438f9546
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      vcruntime140.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\vcruntime140.dll
                                      • Size 116KB
                                      • SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      vcruntime140_1.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\vcruntime140_1.dll
                                      • Size 48KB
                                      • SHA256 a113f192195f245f17389e6ecbed8005990bcb2476ddad33f7c4c6c86327afe5
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      backend_c.pyd

                                      • Path C:\Users\Admin\AppData\Local\Temp\onefile_4988_134267027434006839\zstandard\backend_c.pyd
                                      • Size 508KB
                                      • SHA256 641e0b0fa75764812fff544c174f7c4838b57f6272eaae246eb7c483a0a35afc
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      memory/3468-75-0x00007FF73B170000-0x00007FF73BF34000-memory.dmp

                                      memory/3468-76-0x00007FF8CED90000-0x00007FF8CFCF2000-memory.dmp

                                      memory/3468-77-0x00007FF8CD040000-0x00007FF8CE1CF000-memory.dmp

                                      memory/3468-84-0x00007FF8CED90000-0x00007FF8CFCF2000-memory.dmp

                                      memory/3468-100-0x00007FF8CED90000-0x00007FF8CFCF2000-memory.dmp

                                      memory/3468-104-0x00007FF8CED90000-0x00007FF8CFCF2000-memory.dmp

                                      memory/3468-112-0x00007FF8CED90000-0x00007FF8CFCF2000-memory.dmp

                                      memory/3468-116-0x00007FF8CD040000-0x00007FF8CE1CF000-memory.dmp

                                      memory/4988-74-0x00007FF73B170000-0x00007FF73BF34000-memory.dmp

                                      memory/4988-120-0x00007FF73B170000-0x00007FF73BF34000-memory.dmp

                                      memory/4988-121-0x00007FF73B170000-0x00007FF73BF34000-memory.dmp