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Analysis

  • max time kernel
    166s
  • max time network
    196s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2022, 07:53

General

  • Target

    7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe

  • Size

    148KB

  • MD5

    791005e5f8f8430f9aa354b22d8019f0

  • SHA1

    b918b26b4ce8a87b759415360d316faa37bdfb07

  • SHA256

    7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4

  • SHA512

    99d807553a65b11d34d103598e3880879d79de8c770c47fc24ea92b1575ed1b93fe0485574df097a5aa275e664365236ccdd37bd2198362b5d149ece882ca780

  • SSDEEP

    3072:V0la/3l0jlwpyOj5XTW3gspAlTfXhV57Ino2f/QA1N7/vZ4:qa/3Wjlk1kelLB7DcVU

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 28 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe
    "C:\Users\Admin\AppData\Local\Temp\7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4756
    • C:\Users\Admin\AppData\Local\Temp\7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe
      71
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Checks computer location settings
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4432
      • C:\Users\Admin\llweef.exe
        "C:\Users\Admin\llweef.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1784
        • C:\Users\Admin\llweef.exe
          71
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • Maps connected drives based on registry
          • Drops autorun.inf file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:920

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\llweef.exe

    Filesize

    148KB

    MD5

    791005e5f8f8430f9aa354b22d8019f0

    SHA1

    b918b26b4ce8a87b759415360d316faa37bdfb07

    SHA256

    7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4

    SHA512

    99d807553a65b11d34d103598e3880879d79de8c770c47fc24ea92b1575ed1b93fe0485574df097a5aa275e664365236ccdd37bd2198362b5d149ece882ca780

  • C:\Users\Admin\llweef.exe

    Filesize

    148KB

    MD5

    791005e5f8f8430f9aa354b22d8019f0

    SHA1

    b918b26b4ce8a87b759415360d316faa37bdfb07

    SHA256

    7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4

    SHA512

    99d807553a65b11d34d103598e3880879d79de8c770c47fc24ea92b1575ed1b93fe0485574df097a5aa275e664365236ccdd37bd2198362b5d149ece882ca780

  • C:\Users\Admin\llweef.exe

    Filesize

    148KB

    MD5

    791005e5f8f8430f9aa354b22d8019f0

    SHA1

    b918b26b4ce8a87b759415360d316faa37bdfb07

    SHA256

    7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4

    SHA512

    99d807553a65b11d34d103598e3880879d79de8c770c47fc24ea92b1575ed1b93fe0485574df097a5aa275e664365236ccdd37bd2198362b5d149ece882ca780

  • memory/920-154-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/920-155-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/4432-135-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/4432-137-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/4432-140-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/4432-146-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB