Analysis

  • max time kernel
    151s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-07-2022 15:07

General

  • Target

    51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879.exe

  • Size

    958KB

  • MD5

    1e36889624db92dfefc58f9bb1946f27

  • SHA1

    913eb1a83bb89069697488f98678d2f08f4b26d5

  • SHA256

    51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879

  • SHA512

    51ee65fc1a57689e52ad57d63942593727e650c881c24c350a0dc676dc329bd1e4cf30c2faaf5d7a11c2018ec48e0d2351c6a35418a905199915de788f7e4e3c

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 4 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Uses the VBS compiler for execution 1 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.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879.exe
    "C:\Users\Admin\AppData\Local\Temp\51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Users\Admin\AppData\Local\Temp\51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879.exe
      C:\Users\Admin\AppData\Local\Temp\51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:5076
      • C:\Users\Admin\AppData\Roaming\Windows Update.exe
        "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1504
        • C:\Users\Admin\AppData\Roaming\Windows Update.exe
          C:\Users\Admin\AppData\Roaming\Windows Update.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2348
          • 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"
            5⤵
              PID:4456

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      Filesize

      102B

      MD5

      0511f819df58e36da795e56c4985acf6

      SHA1

      563df302404600543a7823a59a72a34de6158697

      SHA256

      e5f07e6e3132168e1eff0e676c1952eb7a1333453a47955dc988c13db1ed4c7a

      SHA512

      b898a3dfe2976f0eaf9c4f5852cde820300757a8014de1f7accd0dadf4da1ee440004b9d92bb1191f37454dc81f64cd2cd770a3e21db579a32a92f63a6116e8f

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

      Filesize

      958KB

      MD5

      1e36889624db92dfefc58f9bb1946f27

      SHA1

      913eb1a83bb89069697488f98678d2f08f4b26d5

      SHA256

      51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879

      SHA512

      51ee65fc1a57689e52ad57d63942593727e650c881c24c350a0dc676dc329bd1e4cf30c2faaf5d7a11c2018ec48e0d2351c6a35418a905199915de788f7e4e3c

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

      Filesize

      958KB

      MD5

      1e36889624db92dfefc58f9bb1946f27

      SHA1

      913eb1a83bb89069697488f98678d2f08f4b26d5

      SHA256

      51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879

      SHA512

      51ee65fc1a57689e52ad57d63942593727e650c881c24c350a0dc676dc329bd1e4cf30c2faaf5d7a11c2018ec48e0d2351c6a35418a905199915de788f7e4e3c

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

      Filesize

      958KB

      MD5

      1e36889624db92dfefc58f9bb1946f27

      SHA1

      913eb1a83bb89069697488f98678d2f08f4b26d5

      SHA256

      51cdbed80ca92cb74429b01d57e832beb90d4b6ffbcf7639281e3713761d8879

      SHA512

      51ee65fc1a57689e52ad57d63942593727e650c881c24c350a0dc676dc329bd1e4cf30c2faaf5d7a11c2018ec48e0d2351c6a35418a905199915de788f7e4e3c

    • memory/1504-155-0x0000000077280000-0x0000000077423000-memory.dmp

      Filesize

      1.6MB

    • memory/2348-164-0x0000000077280000-0x0000000077423000-memory.dmp

      Filesize

      1.6MB

    • memory/2348-165-0x00000000748F0000-0x0000000074EA1000-memory.dmp

      Filesize

      5.7MB

    • memory/2348-161-0x0000000006B10000-0x0000000006BA0000-memory.dmp

      Filesize

      576KB

    • memory/2544-134-0x0000000077280000-0x0000000077423000-memory.dmp

      Filesize

      1.6MB

    • memory/2544-132-0x0000000002360000-0x0000000002367000-memory.dmp

      Filesize

      28KB

    • memory/4456-168-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/5076-151-0x0000000077280000-0x0000000077423000-memory.dmp

      Filesize

      1.6MB

    • memory/5076-145-0x00000000748F0000-0x0000000074EA1000-memory.dmp

      Filesize

      5.7MB

    • memory/5076-152-0x00000000748F0000-0x0000000074EA1000-memory.dmp

      Filesize

      5.7MB

    • memory/5076-137-0x0000000000400000-0x0000000000477000-memory.dmp

      Filesize

      476KB

    • memory/5076-140-0x00000000021E0000-0x0000000002270000-memory.dmp

      Filesize

      576KB

    • memory/5076-143-0x0000000077280000-0x0000000077423000-memory.dmp

      Filesize

      1.6MB

    • memory/5076-144-0x0000000077280000-0x0000000077423000-memory.dmp

      Filesize

      1.6MB