Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:51

General

  • Target

    e27edf9d8b28c3fb8252de326f538c77280c0d20e22181d27240cb14fb70e08c.exe

  • Size

    447KB

  • MD5

    9e37cbae5b690e4714ff9c655d17a180

  • SHA1

    278b6a68208bd6ad47d77b0f94bd53df95f42c29

  • SHA256

    e27edf9d8b28c3fb8252de326f538c77280c0d20e22181d27240cb14fb70e08c

  • SHA512

    4534eef32242782b35536682aad6412c0420bbcb1d5a964a9a12c1586cdd018c1ac41f2b7d69d1227db719b91d2c9796661174263c48ae77986ee19cc39f4753

  • SSDEEP

    6144:Xzfmuxi2Fn8Jmic41UZRGgmiw8RlZy8CvUsQG8rDHPPezOm2twrSkb3dltr0:SuTFKmADT8lyZss1uDvPezOdPg4

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\e27edf9d8b28c3fb8252de326f538c77280c0d20e22181d27240cb14fb70e08c.exe
    "C:\Users\Admin\AppData\Local\Temp\e27edf9d8b28c3fb8252de326f538c77280c0d20e22181d27240cb14fb70e08c.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:1444
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:852
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1220
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:940
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2012
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2024
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1696
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1288
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1932
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1944
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1844
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1320
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1912
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:524

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            658ceaf376e115205897f66617a43b5c

            SHA1

            4d75491e8ffb9ec325545812bca0bf0ac157a8b5

            SHA256

            445bbf3cda2b807218b0bf5d56b9a6bb225f78495e796e048b1c07d4cee83028

            SHA512

            a3f70f0c2cec7eca09b197b4e485bc82e78c66a057db50fdf7f35d4871c5c7ff57e97c6772983e71cbded48bd4fe688b212cc39086d1d8d59e67a4c32d7b5cda

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            768ed666f038272941d6e4d943e59f0b

            SHA1

            c364891c123d71783f57b2755e9dda8e65ae1231

            SHA256

            056fede5f3b20f76f804d39c15018825a08d8b4ceeac584fc2844377e084958e

            SHA512

            6827b24bff3a2527da6e7e6e7d5717eff886c8107f4163bfb5b2e1cbc6538b4bfffdf050c56fedd04f25f17059b093ffd7642cd72d0b89fabb17e47fc1fb48ef

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            ee643598a478076f1de59d0f02c1ea6d

            SHA1

            141dfb857a416445e1a78e91aa4f3ecad047d1c8

            SHA256

            64968b5368b90ba1683c8156fbf4cc3cc928ac743cc47e3c15566b7ff8a7b018

            SHA512

            ccbc87ce1ffec7aa77e99f822fe65e4691400b3ddff750882bd68cb336f357b5d7d9d4bf1b62aa27cad03fec81f1f65fa175392ac8ce8b8e0f6e82e8b9c4c997

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            37a0590d460d760151a2d6b2fb13ec06

            SHA1

            d09461e435447908459d908cdb8c28e095699afd

            SHA256

            6c9b9e1d2af8a8b0ff5822c119c78519018d4d75299ef48ff33e8022b172a54c

            SHA512

            ccd1b27440d135230f3879f2c6d57356a3196ac9c163d2a9524e788676c5df4fd0cbda91f13cc65f48c6d68e8c5c458e2627319c660be86e0125b1cbc18f22d8

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            37a0590d460d760151a2d6b2fb13ec06

            SHA1

            d09461e435447908459d908cdb8c28e095699afd

            SHA256

            6c9b9e1d2af8a8b0ff5822c119c78519018d4d75299ef48ff33e8022b172a54c

            SHA512

            ccd1b27440d135230f3879f2c6d57356a3196ac9c163d2a9524e788676c5df4fd0cbda91f13cc65f48c6d68e8c5c458e2627319c660be86e0125b1cbc18f22d8

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            679a0f9754a17d27d0f114868c8bc116

            SHA1

            23ba2cba107356f69101a90bdffa048070f0a05e

            SHA256

            34c712c9c6a3179ec2fed3b932847435c7970da28d5447723608540c468e08a6

            SHA512

            9d2b2806807ae25bf8695e6aea78f8c7f94e9f6fd58e8e7a3682a11808e1a1a7f3790fc297f910a3549eaa03471579453d16bb4d686587d4b71078c768e4169a

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            679a0f9754a17d27d0f114868c8bc116

            SHA1

            23ba2cba107356f69101a90bdffa048070f0a05e

            SHA256

            34c712c9c6a3179ec2fed3b932847435c7970da28d5447723608540c468e08a6

            SHA512

            9d2b2806807ae25bf8695e6aea78f8c7f94e9f6fd58e8e7a3682a11808e1a1a7f3790fc297f910a3549eaa03471579453d16bb4d686587d4b71078c768e4169a

          • \Users\Admin\AppData\Local\Temp\nsoBE6.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoBE6.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoBE6.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoBE6.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoBE6.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            658ceaf376e115205897f66617a43b5c

            SHA1

            4d75491e8ffb9ec325545812bca0bf0ac157a8b5

            SHA256

            445bbf3cda2b807218b0bf5d56b9a6bb225f78495e796e048b1c07d4cee83028

            SHA512

            a3f70f0c2cec7eca09b197b4e485bc82e78c66a057db50fdf7f35d4871c5c7ff57e97c6772983e71cbded48bd4fe688b212cc39086d1d8d59e67a4c32d7b5cda

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            658ceaf376e115205897f66617a43b5c

            SHA1

            4d75491e8ffb9ec325545812bca0bf0ac157a8b5

            SHA256

            445bbf3cda2b807218b0bf5d56b9a6bb225f78495e796e048b1c07d4cee83028

            SHA512

            a3f70f0c2cec7eca09b197b4e485bc82e78c66a057db50fdf7f35d4871c5c7ff57e97c6772983e71cbded48bd4fe688b212cc39086d1d8d59e67a4c32d7b5cda

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            658ceaf376e115205897f66617a43b5c

            SHA1

            4d75491e8ffb9ec325545812bca0bf0ac157a8b5

            SHA256

            445bbf3cda2b807218b0bf5d56b9a6bb225f78495e796e048b1c07d4cee83028

            SHA512

            a3f70f0c2cec7eca09b197b4e485bc82e78c66a057db50fdf7f35d4871c5c7ff57e97c6772983e71cbded48bd4fe688b212cc39086d1d8d59e67a4c32d7b5cda

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            768ed666f038272941d6e4d943e59f0b

            SHA1

            c364891c123d71783f57b2755e9dda8e65ae1231

            SHA256

            056fede5f3b20f76f804d39c15018825a08d8b4ceeac584fc2844377e084958e

            SHA512

            6827b24bff3a2527da6e7e6e7d5717eff886c8107f4163bfb5b2e1cbc6538b4bfffdf050c56fedd04f25f17059b093ffd7642cd72d0b89fabb17e47fc1fb48ef

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            768ed666f038272941d6e4d943e59f0b

            SHA1

            c364891c123d71783f57b2755e9dda8e65ae1231

            SHA256

            056fede5f3b20f76f804d39c15018825a08d8b4ceeac584fc2844377e084958e

            SHA512

            6827b24bff3a2527da6e7e6e7d5717eff886c8107f4163bfb5b2e1cbc6538b4bfffdf050c56fedd04f25f17059b093ffd7642cd72d0b89fabb17e47fc1fb48ef

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            ee643598a478076f1de59d0f02c1ea6d

            SHA1

            141dfb857a416445e1a78e91aa4f3ecad047d1c8

            SHA256

            64968b5368b90ba1683c8156fbf4cc3cc928ac743cc47e3c15566b7ff8a7b018

            SHA512

            ccbc87ce1ffec7aa77e99f822fe65e4691400b3ddff750882bd68cb336f357b5d7d9d4bf1b62aa27cad03fec81f1f65fa175392ac8ce8b8e0f6e82e8b9c4c997

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            37a0590d460d760151a2d6b2fb13ec06

            SHA1

            d09461e435447908459d908cdb8c28e095699afd

            SHA256

            6c9b9e1d2af8a8b0ff5822c119c78519018d4d75299ef48ff33e8022b172a54c

            SHA512

            ccd1b27440d135230f3879f2c6d57356a3196ac9c163d2a9524e788676c5df4fd0cbda91f13cc65f48c6d68e8c5c458e2627319c660be86e0125b1cbc18f22d8

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            679a0f9754a17d27d0f114868c8bc116

            SHA1

            23ba2cba107356f69101a90bdffa048070f0a05e

            SHA256

            34c712c9c6a3179ec2fed3b932847435c7970da28d5447723608540c468e08a6

            SHA512

            9d2b2806807ae25bf8695e6aea78f8c7f94e9f6fd58e8e7a3682a11808e1a1a7f3790fc297f910a3549eaa03471579453d16bb4d686587d4b71078c768e4169a

          • memory/852-57-0x0000000000000000-mapping.dmp
          • memory/940-60-0x0000000000000000-mapping.dmp
          • memory/1220-58-0x0000000000000000-mapping.dmp
          • memory/1288-75-0x0000000000000000-mapping.dmp
          • memory/1320-86-0x0000000000000000-mapping.dmp
          • memory/1444-54-0x0000000075ED1000-0x0000000075ED3000-memory.dmp
            Filesize

            8KB

          • memory/1696-69-0x0000000000000000-mapping.dmp
          • memory/1844-85-0x0000000000000000-mapping.dmp
          • memory/1932-79-0x0000000000000000-mapping.dmp
          • memory/1944-80-0x0000000000000000-mapping.dmp
          • memory/2012-61-0x0000000000000000-mapping.dmp
          • memory/2024-63-0x0000000000000000-mapping.dmp