Resubmissions

30/10/2026, 22:39

261030-2k977sfw3t

30/10/2026, 22:36

261030-2h875agy6r7

Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/10/2026, 22:36

General

  • Target
    custom1.exe
  • Size 7.7MB
  • Sample261030-2h875agy6r
  • SHA256 afb96cee8a0d6eb29c61969b5086a22cb40ae524f371f657afe0b63dcc31b202
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 36 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 5 IoCs

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

  • Executes a command shell one-liner 1 TTPs 4 IoCs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry key 1 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\custom1.exe
    "C:\Users\Admin\AppData\Local\Temp\custom1.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4336
    • C:\Users\Admin\AppData\Local\Temp\custom1.exe
      "C:\Users\Admin\AppData\Local\Temp\custom1.exe"
      2⤵
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4932
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c "ver"
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        PID:2952
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c "reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v SysUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\custom1.exe" /f"
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3416
        • C:\Windows\SysWOW64\reg.exe
          reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v SysUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\custom1.exe" /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:972
  • C:\Users\Admin\AppData\Local\Temp\custom1.exe
    C:\Users\Admin\AppData\Local\Temp\custom1.exe
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2760
    • C:\Users\Admin\AppData\Local\Temp\custom1.exe
      C:\Users\Admin\AppData\Local\Temp\custom1.exe
      2⤵
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2308
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c "ver"
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        PID:4176
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c "reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v SysUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\custom1.exe" /f"
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1504
        • C:\Windows\SysWOW64\reg.exe
          reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v SysUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\custom1.exe" /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:4152

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\VCRUNTIME140.dll
        • Size 74KB
        • SHA256 9ec4afad505e0a3dad760fa5b59c66606ae54dd043c16914cf56d7006e46d375
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_bz2.pyd
        • Size 77KB
        • SHA256 82a85187faf8786216c82ac1c4ccf32c8839048e242025ed4e7a1e3ab870255f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ctypes.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_ctypes.pyd
        • Size 114KB
        • SHA256 3a94a3525b0531524aabc7f8fc9f1253894cd612a9823d9cdd5070ab81b9d329
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _decimal.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_decimal.pyd
        • Size 223KB
        • SHA256 44107df49d7dbea4e5d1c7f8a24b2d30c7f4d1623f599c4ea9f5f36c05fe0ee6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _hashlib.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_hashlib.pyd
        • Size 38KB
        • SHA256 8929b5818aaa0f595b8cc3b6aaddc630f2b27bcde3a29d44c13d95037596aa1b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_lzma.pyd
        • Size 155KB
        • SHA256 d3350ad957d6c37b2c75f56a5a149f0eeb58295227f78c15048669a2e816ae3a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _queue.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_queue.pyd
        • Size 25KB
        • SHA256 e8d293cf77b9f94395c18a26ce38cc1ca01a183db3e9105ed9040338ea252ae4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _socket.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_socket.pyd
        • Size 68KB
        • SHA256 48f1f1842e6845a197c9be50027bb2a67a868e743bfa81b8d8753c24cdc08b7b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _sqlite3.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_sqlite3.pyd
        • Size 68KB
        • SHA256 dda21a626a57cf6794140e5f7af749baf1ae686a58336a85b20c61b617a99a80
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ssl.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\_ssl.pyd
        • Size 140KB
        • SHA256 5dc85dd0bee9ef96c1f278398cc7af36de2f3721dce726a4b13d64bd63eabc39
        • MD5 SHA1 SHA512 SSDEEP TLSH

        base_library.zip

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\base_library.zip
        • Size 824KB
        • SHA256 37d17a9ed8fe0e8d4b251326b7e3c25e1bcb283595885704344ffecaeaecf8a0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cacert.pem

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\certifi\cacert.pem
        • Size 230KB
        • SHA256 2ef52ad56b4803e264045c915e55c236cbfa045b84b81efefc218a19eb44bd2b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cd.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\charset_normalizer\cd.pyd
        • Size 94KB
        • SHA256 75b0bc0c59f709b5c4b9c6ece10315747639632194d0b442cd73a965c1da40ec
        • MD5 SHA1 SHA512 SSDEEP TLSH

        md.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\charset_normalizer\md.pyd
        • Size 160KB
        • SHA256 50c3e80e8fc7b5705cb103e73466e5dcc304fc377209fc53cc1c9926ebb9a558
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libcrypto-1_1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\libcrypto-1_1.dll
        • Size 2.1MB
        • SHA256 1e95a63b165672accde92a9c9f8b9052c8f6357344f1376af9f916aeeb306da3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libffi-7.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\libffi-7.dll
        • Size 28KB
        • SHA256 0c7ec6de19c246a23756b8550e6178ac2394b1093e96d0f43789124149486f57
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libssl-1_1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\libssl-1_1.dll
        • Size 526KB
        • SHA256 06958c63049e2d7fe1f56df3767e884023a76bba1f41319f7fab3439b28174c5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python3.DLL

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\python3.DLL
        • Size 58KB
        • SHA256 eac07e177308b8d77e23ef0f510a56b8fb9a56cda876118f9eab1a8e1d9bb399
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python38.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\python38.dll
        • Size 3.9MB
        • SHA256 a9675a91d767095c9d4a2ae1df6e17bdb59102dbd2b4504c3493b0bcbed5ef55
        • MD5 SHA1 SHA512 SSDEEP TLSH

        select.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\select.pyd
        • Size 24KB
        • SHA256 6d5a3630570035555cea342c3a8e2922ca23451113cb178cd7fee07e59da123c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        sqlite3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\sqlite3.dll
        • Size 1.2MB
        • SHA256 1090083e89dcef8dcb42b9d7a9fc1928ff7b48b538f3ad44113e7cb5df9f0cc2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43362\unicodedata.pyd
        • Size 1.0MB
        • SHA256 af602c6033875478b8cec6270c4b0fa618290b97c7e139d71dbb58b83a08781a
        • MD5 SHA1 SHA512 SSDEEP TLSH