Analysis

  • max time kernel
    43s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:13

General

  • Target

    c31edc81161505da8e39d14e497de53a1ccdd26719c189b62c945f51b03f0601.exe

  • Size

    602KB

  • MD5

    4e673f7f593628c44d749e2cb40d58ce

  • SHA1

    288d20300de179c0616e720c608ed2655d505ef0

  • SHA256

    c31edc81161505da8e39d14e497de53a1ccdd26719c189b62c945f51b03f0601

  • SHA512

    5f6ac4d5804236b1e291d7aa39cd47e02104c99a818fb9d4ac32c705d639dda6f9886528efb7aef9310b9656a7b5bce429b732caf6749cd02fc8c16c0ebf7cd1

  • SSDEEP

    12288:GIny5DYTuYzoSMw02LW29uxpNLQ3LpQLL02Ytg7ERtctL:oUTuYzFp9uxHFvPYOoc

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\c31edc81161505da8e39d14e497de53a1ccdd26719c189b62c945f51b03f0601.exe
    "C:\Users\Admin\AppData\Local\Temp\c31edc81161505da8e39d14e497de53a1ccdd26719c189b62c945f51b03f0601.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:2032
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1892
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:940
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:764
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1736
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1732
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:516
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1788
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1948
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1956
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1384
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:308
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1744
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:916

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f9d1733e14a9991e6eb40880d0331f2

            SHA1

            004ed88a4ba8c4acf540365c98716e43e25dc0ac

            SHA256

            42ed72dc663d50ea9c6d70eb17b6300fe6686154482d82e0da770402cc607133

            SHA512

            018ff762ef948d80129b30ab02b9cbb8638ab05dc039e4908eb2bf26aef46c38d3166d1ba8a0682eccb10a895ad1091e656b6c67271d021fcc19720bcabd5154

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3ea5305067db0838e90f78634dc3d45c

            SHA1

            9e238bd1545fe01cb074e6a318fa42194480fb98

            SHA256

            89def2ec7a56dc792dfb21699937c8f2754b7316513eac5e607ae48a1e048bb4

            SHA512

            e0c4266d1db0d67b03986c45aed4814e4b65d93c6f5acc7bbe4938547ae72361f0fea862c158741e40456c0639f7f2db3cdd52defd9a090e60970b3b10c398d1

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            bab82f80a3b683c85a6f00bc2df797aa

            SHA1

            6bfa67d08396441f0c507540194bfcd2de448ad5

            SHA256

            817a39a9d8fcc4728814ecf4b144ee30700961cbbb42c0f0fd867cbd86b3f247

            SHA512

            fc61ccbdaf82019aec970341ed3a8915a50d5e5b5923f550becffb40e2acf64877bb73efc4640616f4857e514cbd041eb678bf307b36da786a69971b15f0492e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ea630e49d15c16760a24516ecae060e

            SHA1

            ec15a3c054c5d1fcdc70a436fe36167828b12061

            SHA256

            8695bf337e46d1be6409a4e8d2eafcc172f453e6c0184bc1f4c8b344172516ba

            SHA512

            baec28afcd2fe08717c04b88ea53971520de243a3844c1346d0c84ddb5db24917b333f8593196f46d41809edf520605e3c65f16ee2bb1cf95db7d12b04b926f3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ea630e49d15c16760a24516ecae060e

            SHA1

            ec15a3c054c5d1fcdc70a436fe36167828b12061

            SHA256

            8695bf337e46d1be6409a4e8d2eafcc172f453e6c0184bc1f4c8b344172516ba

            SHA512

            baec28afcd2fe08717c04b88ea53971520de243a3844c1346d0c84ddb5db24917b333f8593196f46d41809edf520605e3c65f16ee2bb1cf95db7d12b04b926f3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a41a3ea7e2617531bdf41d0f8ecd5cf5

            SHA1

            3ca4436e7a7ac3bbb9c16e5ed870db54c4b2f862

            SHA256

            db788a1b71f0c4b47112c61d36f68ab4d2b554692305f252c3b8594f767d7136

            SHA512

            769bc19e9d5b31ef84f6a95365771cb265f9a2d773a5e52448261f17975ba535f7c85cbe9b4af8082d8799439874a45ec1e8003b9f091eb327f8b0daec52ffef

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a41a3ea7e2617531bdf41d0f8ecd5cf5

            SHA1

            3ca4436e7a7ac3bbb9c16e5ed870db54c4b2f862

            SHA256

            db788a1b71f0c4b47112c61d36f68ab4d2b554692305f252c3b8594f767d7136

            SHA512

            769bc19e9d5b31ef84f6a95365771cb265f9a2d773a5e52448261f17975ba535f7c85cbe9b4af8082d8799439874a45ec1e8003b9f091eb327f8b0daec52ffef

          • \Users\Admin\AppData\Local\Temp\nst3047.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst3047.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3047.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3047.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst3047.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f9d1733e14a9991e6eb40880d0331f2

            SHA1

            004ed88a4ba8c4acf540365c98716e43e25dc0ac

            SHA256

            42ed72dc663d50ea9c6d70eb17b6300fe6686154482d82e0da770402cc607133

            SHA512

            018ff762ef948d80129b30ab02b9cbb8638ab05dc039e4908eb2bf26aef46c38d3166d1ba8a0682eccb10a895ad1091e656b6c67271d021fcc19720bcabd5154

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f9d1733e14a9991e6eb40880d0331f2

            SHA1

            004ed88a4ba8c4acf540365c98716e43e25dc0ac

            SHA256

            42ed72dc663d50ea9c6d70eb17b6300fe6686154482d82e0da770402cc607133

            SHA512

            018ff762ef948d80129b30ab02b9cbb8638ab05dc039e4908eb2bf26aef46c38d3166d1ba8a0682eccb10a895ad1091e656b6c67271d021fcc19720bcabd5154

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2f9d1733e14a9991e6eb40880d0331f2

            SHA1

            004ed88a4ba8c4acf540365c98716e43e25dc0ac

            SHA256

            42ed72dc663d50ea9c6d70eb17b6300fe6686154482d82e0da770402cc607133

            SHA512

            018ff762ef948d80129b30ab02b9cbb8638ab05dc039e4908eb2bf26aef46c38d3166d1ba8a0682eccb10a895ad1091e656b6c67271d021fcc19720bcabd5154

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3ea5305067db0838e90f78634dc3d45c

            SHA1

            9e238bd1545fe01cb074e6a318fa42194480fb98

            SHA256

            89def2ec7a56dc792dfb21699937c8f2754b7316513eac5e607ae48a1e048bb4

            SHA512

            e0c4266d1db0d67b03986c45aed4814e4b65d93c6f5acc7bbe4938547ae72361f0fea862c158741e40456c0639f7f2db3cdd52defd9a090e60970b3b10c398d1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3ea5305067db0838e90f78634dc3d45c

            SHA1

            9e238bd1545fe01cb074e6a318fa42194480fb98

            SHA256

            89def2ec7a56dc792dfb21699937c8f2754b7316513eac5e607ae48a1e048bb4

            SHA512

            e0c4266d1db0d67b03986c45aed4814e4b65d93c6f5acc7bbe4938547ae72361f0fea862c158741e40456c0639f7f2db3cdd52defd9a090e60970b3b10c398d1

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            bab82f80a3b683c85a6f00bc2df797aa

            SHA1

            6bfa67d08396441f0c507540194bfcd2de448ad5

            SHA256

            817a39a9d8fcc4728814ecf4b144ee30700961cbbb42c0f0fd867cbd86b3f247

            SHA512

            fc61ccbdaf82019aec970341ed3a8915a50d5e5b5923f550becffb40e2acf64877bb73efc4640616f4857e514cbd041eb678bf307b36da786a69971b15f0492e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ea630e49d15c16760a24516ecae060e

            SHA1

            ec15a3c054c5d1fcdc70a436fe36167828b12061

            SHA256

            8695bf337e46d1be6409a4e8d2eafcc172f453e6c0184bc1f4c8b344172516ba

            SHA512

            baec28afcd2fe08717c04b88ea53971520de243a3844c1346d0c84ddb5db24917b333f8593196f46d41809edf520605e3c65f16ee2bb1cf95db7d12b04b926f3

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a41a3ea7e2617531bdf41d0f8ecd5cf5

            SHA1

            3ca4436e7a7ac3bbb9c16e5ed870db54c4b2f862

            SHA256

            db788a1b71f0c4b47112c61d36f68ab4d2b554692305f252c3b8594f767d7136

            SHA512

            769bc19e9d5b31ef84f6a95365771cb265f9a2d773a5e52448261f17975ba535f7c85cbe9b4af8082d8799439874a45ec1e8003b9f091eb327f8b0daec52ffef

          • memory/308-87-0x0000000000000000-mapping.dmp

          • memory/516-70-0x0000000000000000-mapping.dmp

          • memory/764-61-0x0000000000000000-mapping.dmp

          • memory/940-58-0x0000000000000000-mapping.dmp

          • memory/1384-86-0x0000000000000000-mapping.dmp

          • memory/1732-64-0x0000000000000000-mapping.dmp

          • memory/1736-62-0x0000000000000000-mapping.dmp

          • memory/1788-76-0x0000000000000000-mapping.dmp

          • memory/1892-57-0x0000000000000000-mapping.dmp

          • memory/1948-80-0x0000000000000000-mapping.dmp

          • memory/1956-81-0x0000000000000000-mapping.dmp

          • memory/2032-54-0x0000000075A71000-0x0000000075A73000-memory.dmp

            Filesize

            8KB

          • memory/2032-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2032-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB