Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 13:42

General

  • Target

    8cc2f53bff5b28bd19b6216c2f025451851e35bf84aa00c16d0602af7f954a1e.exe

  • Size

    712KB

  • MD5

    80fa4ff9b4ce3ab432e6b120ab5800d6

  • SHA1

    dcbd6cfdf7d81089392ab74d87c87986bcaf1249

  • SHA256

    8cc2f53bff5b28bd19b6216c2f025451851e35bf84aa00c16d0602af7f954a1e

  • SHA512

    fcb515603fb9e102028e2bf3b15358874d89e8a9b4603197aba91a24852cb2f7c15dfe71ab5cfaf400e7d654bd89c7e927db063f52d8b55247a2cf67b7ffed38

  • SSDEEP

    12288:CQtqB5urTIoYWBQk1E+VF9mOx99PP7r9r/+ppppppppppppppppppppppppppppd:CQtqBorTlYWBhE+V3mOVP1q

Malware Config

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • NirSoft MailPassView 6 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 6 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 10 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8cc2f53bff5b28bd19b6216c2f025451851e35bf84aa00c16d0602af7f954a1e.exe
    "C:\Users\Admin\AppData\Local\Temp\8cc2f53bff5b28bd19b6216c2f025451851e35bf84aa00c16d0602af7f954a1e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4396
    • C:\Users\Admin\AppData\Roaming\Windows Update.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4332
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1868
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
        3⤵
          PID:2008

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\SysInfo.txt

      Filesize

      102B

      MD5

      981145e68418e44ae61afa061f1f60e9

      SHA1

      71353298386753ff2a2ac60105c1b586435e54e1

      SHA256

      477c7f89af00be13cd61f22740eec7f4a141dc237e325cc0deb2e61aeefca400

      SHA512

      6fa1e45b545b88ff74f8bb8723d8f49f2ee257e7b6b43a52a0e676e276c6b8e4fb203ce8498a429ca75fd39ed6eed6bfca7994242f1330807606f293664c2c2a

    • C:\Users\Admin\AppData\Local\Temp\holderwb.txt

      Filesize

      3KB

      MD5

      f94dc819ca773f1e3cb27abbc9e7fa27

      SHA1

      9a7700efadc5ea09ab288544ef1e3cd876255086

      SHA256

      a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

      SHA512

      72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

    • C:\Users\Admin\AppData\Roaming\Windows Update.exe

      Filesize

      712KB

      MD5

      80fa4ff9b4ce3ab432e6b120ab5800d6

      SHA1

      dcbd6cfdf7d81089392ab74d87c87986bcaf1249

      SHA256

      8cc2f53bff5b28bd19b6216c2f025451851e35bf84aa00c16d0602af7f954a1e

      SHA512

      fcb515603fb9e102028e2bf3b15358874d89e8a9b4603197aba91a24852cb2f7c15dfe71ab5cfaf400e7d654bd89c7e927db063f52d8b55247a2cf67b7ffed38

    • C:\Users\Admin\AppData\Roaming\Windows Update.exe

      Filesize

      712KB

      MD5

      80fa4ff9b4ce3ab432e6b120ab5800d6

      SHA1

      dcbd6cfdf7d81089392ab74d87c87986bcaf1249

      SHA256

      8cc2f53bff5b28bd19b6216c2f025451851e35bf84aa00c16d0602af7f954a1e

      SHA512

      fcb515603fb9e102028e2bf3b15358874d89e8a9b4603197aba91a24852cb2f7c15dfe71ab5cfaf400e7d654bd89c7e927db063f52d8b55247a2cf67b7ffed38

    • memory/1868-140-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1868-143-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1868-142-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1868-139-0x0000000000000000-mapping.dmp

    • memory/2008-145-0x0000000000000000-mapping.dmp

    • memory/2008-146-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/2008-148-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/2008-150-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/4332-137-0x0000000074CB0000-0x0000000075261000-memory.dmp

      Filesize

      5.7MB

    • memory/4332-144-0x0000000074CB0000-0x0000000075261000-memory.dmp

      Filesize

      5.7MB

    • memory/4332-133-0x0000000000000000-mapping.dmp

    • memory/4396-136-0x0000000074CB0000-0x0000000075261000-memory.dmp

      Filesize

      5.7MB

    • memory/4396-132-0x0000000074CB0000-0x0000000075261000-memory.dmp

      Filesize

      5.7MB