Analysis

  • max time kernel
    39s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:36

General

  • Target

    3a8a390e77980138ddee6f2c489bdc99c9e3656b917489bd5d71edaef396babb.exe

  • Size

    558KB

  • MD5

    2800cebb15e5415353b7e507a9a1f708

  • SHA1

    2b1a9054374de927cc7b2bb0a0692cfab9bbb87f

  • SHA256

    3a8a390e77980138ddee6f2c489bdc99c9e3656b917489bd5d71edaef396babb

  • SHA512

    8530a21efb063b35f30ebbbe6efc6191ed4c2c9763f58d36d470a2bd1e0febedf67c22d5875872ca31c1980ca83b3a4bae678325a01da91ff4dd6f4a66305eee

  • SSDEEP

    12288:Y2hB6D0bf1uAbLwOkFLp7d8TwnoN0zS2YXgzQ1yL:4DAf73kvWUoCHzQQ

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 13 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a8a390e77980138ddee6f2c489bdc99c9e3656b917489bd5d71edaef396babb.exe
    "C:\Users\Admin\AppData\Local\Temp\3a8a390e77980138ddee6f2c489bdc99c9e3656b917489bd5d71edaef396babb.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1504
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1324
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1112
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:888
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:956
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:972
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:380
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1844
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1168
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1320
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:364
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1676
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1512
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1604

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c9fa7663ff013255fb36c6196f3f4434

            SHA1

            feef1f8e1645aa968af14cb7da2db615e6b97341

            SHA256

            9ad6ac5e53a704db4461c43673863b36eea205cfa80c2210289c9e401ac9b05f

            SHA512

            d45b44f60d2e3a90fe4902e789b0b306ee90490f9b9d8dce6949cff7d507128f2419c465e1f5920048e3540e3a948f11b351568396c777866f870321b66e7e48

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            40a9d25fdfdf2831afb55fbdc6700a95

            SHA1

            4acfad1db00c3f6c6bb2420e127f29084d97cc47

            SHA256

            2c23fe0778d157120069ecee4d64e9e861f6d85acd601b7646bc7077734ce691

            SHA512

            48fdd86a6df9442a36248706c6824b0e84253c0a341e7bf4575a8ee3253cc06189d1d8cfc523a09d096536013297ab7c3b120daef2c387793dc0b72bade9d0ab

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8b1fe3f49d77f8309441f2488d9600a2

            SHA1

            58f650ae688f6483b99cdd468ec79fe9a2c14ad4

            SHA256

            b690ad2281f48a8d22b30d9471933b800a101f5490e6d1ed4844b5725c08c2c3

            SHA512

            0b855a96c82d44871548db0a4fc4bf2f310b377ee359f2d6d3743aa39afc6482bce07087686421046b613955fb890b589c031bc9904c70d4bc1776d9dd7d0da3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e5b2e1c468f29101ab634d4938c88027

            SHA1

            5e44b564e6a0844918e8528051a91babeff16d7b

            SHA256

            60d60c7edc1fcd7356fddf18d78a97bd47b2ad788e35267c44106cb92ef0dc2f

            SHA512

            3643bc7f52eb9ca4307bd65f438871a7784ce4137353a7367ae4982e7f9e82117a72a3d72de1b6662284fbd7a965de754dfdbb515693a878679ccd8b53929b1c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e5b2e1c468f29101ab634d4938c88027

            SHA1

            5e44b564e6a0844918e8528051a91babeff16d7b

            SHA256

            60d60c7edc1fcd7356fddf18d78a97bd47b2ad788e35267c44106cb92ef0dc2f

            SHA512

            3643bc7f52eb9ca4307bd65f438871a7784ce4137353a7367ae4982e7f9e82117a72a3d72de1b6662284fbd7a965de754dfdbb515693a878679ccd8b53929b1c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1564880d91edf0673a4c41304c3e1964

            SHA1

            413333772a5ab5e6fb053d76b77ef6b3fd933f99

            SHA256

            9f759bec75e654057d7e4eee96b7e31a5bcb45f009e404791e43f28ef13e6078

            SHA512

            d43c5dfa03b73058e353a905caf2c81595275cfa64b46cbcb6ed3d1a0f8d81493e6c5eea29f3d6a788c91caa944439b56f51f7eaa23a8d327d6f12b7b61c768e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1564880d91edf0673a4c41304c3e1964

            SHA1

            413333772a5ab5e6fb053d76b77ef6b3fd933f99

            SHA256

            9f759bec75e654057d7e4eee96b7e31a5bcb45f009e404791e43f28ef13e6078

            SHA512

            d43c5dfa03b73058e353a905caf2c81595275cfa64b46cbcb6ed3d1a0f8d81493e6c5eea29f3d6a788c91caa944439b56f51f7eaa23a8d327d6f12b7b61c768e

          • \Users\Admin\AppData\Local\Temp\nsd453D.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd453D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd453D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd453D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd453D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c9fa7663ff013255fb36c6196f3f4434

            SHA1

            feef1f8e1645aa968af14cb7da2db615e6b97341

            SHA256

            9ad6ac5e53a704db4461c43673863b36eea205cfa80c2210289c9e401ac9b05f

            SHA512

            d45b44f60d2e3a90fe4902e789b0b306ee90490f9b9d8dce6949cff7d507128f2419c465e1f5920048e3540e3a948f11b351568396c777866f870321b66e7e48

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c9fa7663ff013255fb36c6196f3f4434

            SHA1

            feef1f8e1645aa968af14cb7da2db615e6b97341

            SHA256

            9ad6ac5e53a704db4461c43673863b36eea205cfa80c2210289c9e401ac9b05f

            SHA512

            d45b44f60d2e3a90fe4902e789b0b306ee90490f9b9d8dce6949cff7d507128f2419c465e1f5920048e3540e3a948f11b351568396c777866f870321b66e7e48

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c9fa7663ff013255fb36c6196f3f4434

            SHA1

            feef1f8e1645aa968af14cb7da2db615e6b97341

            SHA256

            9ad6ac5e53a704db4461c43673863b36eea205cfa80c2210289c9e401ac9b05f

            SHA512

            d45b44f60d2e3a90fe4902e789b0b306ee90490f9b9d8dce6949cff7d507128f2419c465e1f5920048e3540e3a948f11b351568396c777866f870321b66e7e48

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            40a9d25fdfdf2831afb55fbdc6700a95

            SHA1

            4acfad1db00c3f6c6bb2420e127f29084d97cc47

            SHA256

            2c23fe0778d157120069ecee4d64e9e861f6d85acd601b7646bc7077734ce691

            SHA512

            48fdd86a6df9442a36248706c6824b0e84253c0a341e7bf4575a8ee3253cc06189d1d8cfc523a09d096536013297ab7c3b120daef2c387793dc0b72bade9d0ab

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            40a9d25fdfdf2831afb55fbdc6700a95

            SHA1

            4acfad1db00c3f6c6bb2420e127f29084d97cc47

            SHA256

            2c23fe0778d157120069ecee4d64e9e861f6d85acd601b7646bc7077734ce691

            SHA512

            48fdd86a6df9442a36248706c6824b0e84253c0a341e7bf4575a8ee3253cc06189d1d8cfc523a09d096536013297ab7c3b120daef2c387793dc0b72bade9d0ab

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8b1fe3f49d77f8309441f2488d9600a2

            SHA1

            58f650ae688f6483b99cdd468ec79fe9a2c14ad4

            SHA256

            b690ad2281f48a8d22b30d9471933b800a101f5490e6d1ed4844b5725c08c2c3

            SHA512

            0b855a96c82d44871548db0a4fc4bf2f310b377ee359f2d6d3743aa39afc6482bce07087686421046b613955fb890b589c031bc9904c70d4bc1776d9dd7d0da3

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e5b2e1c468f29101ab634d4938c88027

            SHA1

            5e44b564e6a0844918e8528051a91babeff16d7b

            SHA256

            60d60c7edc1fcd7356fddf18d78a97bd47b2ad788e35267c44106cb92ef0dc2f

            SHA512

            3643bc7f52eb9ca4307bd65f438871a7784ce4137353a7367ae4982e7f9e82117a72a3d72de1b6662284fbd7a965de754dfdbb515693a878679ccd8b53929b1c

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1564880d91edf0673a4c41304c3e1964

            SHA1

            413333772a5ab5e6fb053d76b77ef6b3fd933f99

            SHA256

            9f759bec75e654057d7e4eee96b7e31a5bcb45f009e404791e43f28ef13e6078

            SHA512

            d43c5dfa03b73058e353a905caf2c81595275cfa64b46cbcb6ed3d1a0f8d81493e6c5eea29f3d6a788c91caa944439b56f51f7eaa23a8d327d6f12b7b61c768e

          • memory/364-86-0x0000000000000000-mapping.dmp

          • memory/380-70-0x0000000000000000-mapping.dmp

          • memory/888-61-0x0000000000000000-mapping.dmp

          • memory/956-62-0x0000000000000000-mapping.dmp

          • memory/972-64-0x0000000000000000-mapping.dmp

          • memory/1112-59-0x0000000000000000-mapping.dmp

          • memory/1168-80-0x0000000000000000-mapping.dmp

          • memory/1320-81-0x0000000000000000-mapping.dmp

          • memory/1324-57-0x0000000000000000-mapping.dmp

          • memory/1504-54-0x00000000768A1000-0x00000000768A3000-memory.dmp

            Filesize

            8KB

          • memory/1504-58-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB

          • memory/1504-90-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB

          • memory/1676-87-0x0000000000000000-mapping.dmp

          • memory/1844-76-0x0000000000000000-mapping.dmp