Analysis

  • max time kernel
    28s
  • 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 10:29

General

  • Target

    36a8f18fa307b17bc0c35d5887af57de89e80861aadae4f85bc5402b3671f873.exe

  • Size

    602KB

  • MD5

    6d69ddefc24c59625292bbccb4b9e822

  • SHA1

    44f07795ddc6fc8c330f2755525448e1c77b7570

  • SHA256

    36a8f18fa307b17bc0c35d5887af57de89e80861aadae4f85bc5402b3671f873

  • SHA512

    c6d356f0c75a31462d47e7e819c20a3b7b5a250adfac6d4490f4b2c9f391e5b2beeeeafe02594f9f7a08758e055fce3a7555937db01bdfb8e5696314f831b6f5

  • SSDEEP

    12288:AIny5DYTSI2nhwMM81VQSuvTd0UK8Fi7ahMFBtQeE8AH:+UTSBnhwf8HbuvTdXKIi71tQePAH

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\36a8f18fa307b17bc0c35d5887af57de89e80861aadae4f85bc5402b3671f873.exe
    "C:\Users\Admin\AppData\Local\Temp\36a8f18fa307b17bc0c35d5887af57de89e80861aadae4f85bc5402b3671f873.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:2016
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1724
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1716
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:964
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1588
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1712
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:688
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1840
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1676
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1256
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1116
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:568
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1644
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1520

          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

            fcd57ec406e058c31713b2553277ef7b

            SHA1

            371b4aa8fa6116ee3d12723d92fc47f0ece65bbc

            SHA256

            e0fce65c3a953fbf4d02a6d942866d8410fdbf6316684c09a730e1fb4c359646

            SHA512

            d4190b90ace624e780b169af0d2cd6e395f0e0937affcc478516e17a9caa898c14a7eb2b1e64a22d2f6417b21f0ad8e82530b4707e50940f72d3da2d6a8cdb61

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

            241KB

            MD5

            c621215a7163119c27d2c70e5567cf73

            SHA1

            eecf8869729b5b4504f53c8ae81aac5e52695b4f

            SHA256

            aa572bacd9e9566a791a2228d0c7b69b5e2ca07230ea92647edc7de756301875

            SHA512

            c1c14a6370f4127ef5ed2998fb0edc5977f540c73739f8dacefd6a20307a120a9232b8c771421dabe09ba6edec65e4bb068dc37550b6c426bf7b160c2ea2cd4d

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

            108KB

            MD5

            641c4603f59faef5ff8a4535253d2743

            SHA1

            de82e7a5ebb7d96a5db9a05cd33d5292b5baf37c

            SHA256

            652318e2da5825a575da660aaef27e1c736c5af3e49e4011cdeb655a2272f453

            SHA512

            8355fbd2674e80913e0b6e7ad8af4c9bae1a0a465e641a7db7b5c7a27e7b7442283526fef05e778dda7a9d292280c97877ec93330fef7968454b78d77b9a4245

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

            176KB

            MD5

            7d8ea870a7bbbdc269e837cd2b9aaa87

            SHA1

            8ffec4976e719dba949c4e11fddc1cc30b738554

            SHA256

            36edfb6398e544b0b14a24eae90e98265664acefccde0020c7bd85443aee0d62

            SHA512

            9cc3988067cbfcd164d727fc8b6e4a7b6beef43d67a49ef7986ac3fe4cece02eba6fae589075be8129f4edaaa01513352023500815cd23db7d6482cbcf01a258

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

            176KB

            MD5

            7d8ea870a7bbbdc269e837cd2b9aaa87

            SHA1

            8ffec4976e719dba949c4e11fddc1cc30b738554

            SHA256

            36edfb6398e544b0b14a24eae90e98265664acefccde0020c7bd85443aee0d62

            SHA512

            9cc3988067cbfcd164d727fc8b6e4a7b6beef43d67a49ef7986ac3fe4cece02eba6fae589075be8129f4edaaa01513352023500815cd23db7d6482cbcf01a258

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

            159KB

            MD5

            eda874ac0decb674924c3b83eeac0721

            SHA1

            ae2bc1bd499202e718ec63bf6fa31fb48c29773e

            SHA256

            18b49ea2a29ca51596e333632f3f263d3ad6859ab58cacb94e463a51d026ef4d

            SHA512

            87ba2e7f457b8177f9cd9e77717dc0ca7690ca48860280c226a04b4931935a8bac9d133a54615a926c5ec0eb58c5e57cb1f1dbc6646713d35c2f5afd3cddacad

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

            159KB

            MD5

            eda874ac0decb674924c3b83eeac0721

            SHA1

            ae2bc1bd499202e718ec63bf6fa31fb48c29773e

            SHA256

            18b49ea2a29ca51596e333632f3f263d3ad6859ab58cacb94e463a51d026ef4d

            SHA512

            87ba2e7f457b8177f9cd9e77717dc0ca7690ca48860280c226a04b4931935a8bac9d133a54615a926c5ec0eb58c5e57cb1f1dbc6646713d35c2f5afd3cddacad

          • \Users\Admin\AppData\Local\Temp\nsy2C70.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy2C70.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2C70.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2C70.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2C70.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            fcd57ec406e058c31713b2553277ef7b

            SHA1

            371b4aa8fa6116ee3d12723d92fc47f0ece65bbc

            SHA256

            e0fce65c3a953fbf4d02a6d942866d8410fdbf6316684c09a730e1fb4c359646

            SHA512

            d4190b90ace624e780b169af0d2cd6e395f0e0937affcc478516e17a9caa898c14a7eb2b1e64a22d2f6417b21f0ad8e82530b4707e50940f72d3da2d6a8cdb61

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            fcd57ec406e058c31713b2553277ef7b

            SHA1

            371b4aa8fa6116ee3d12723d92fc47f0ece65bbc

            SHA256

            e0fce65c3a953fbf4d02a6d942866d8410fdbf6316684c09a730e1fb4c359646

            SHA512

            d4190b90ace624e780b169af0d2cd6e395f0e0937affcc478516e17a9caa898c14a7eb2b1e64a22d2f6417b21f0ad8e82530b4707e50940f72d3da2d6a8cdb61

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            fcd57ec406e058c31713b2553277ef7b

            SHA1

            371b4aa8fa6116ee3d12723d92fc47f0ece65bbc

            SHA256

            e0fce65c3a953fbf4d02a6d942866d8410fdbf6316684c09a730e1fb4c359646

            SHA512

            d4190b90ace624e780b169af0d2cd6e395f0e0937affcc478516e17a9caa898c14a7eb2b1e64a22d2f6417b21f0ad8e82530b4707e50940f72d3da2d6a8cdb61

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c621215a7163119c27d2c70e5567cf73

            SHA1

            eecf8869729b5b4504f53c8ae81aac5e52695b4f

            SHA256

            aa572bacd9e9566a791a2228d0c7b69b5e2ca07230ea92647edc7de756301875

            SHA512

            c1c14a6370f4127ef5ed2998fb0edc5977f540c73739f8dacefd6a20307a120a9232b8c771421dabe09ba6edec65e4bb068dc37550b6c426bf7b160c2ea2cd4d

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c621215a7163119c27d2c70e5567cf73

            SHA1

            eecf8869729b5b4504f53c8ae81aac5e52695b4f

            SHA256

            aa572bacd9e9566a791a2228d0c7b69b5e2ca07230ea92647edc7de756301875

            SHA512

            c1c14a6370f4127ef5ed2998fb0edc5977f540c73739f8dacefd6a20307a120a9232b8c771421dabe09ba6edec65e4bb068dc37550b6c426bf7b160c2ea2cd4d

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            641c4603f59faef5ff8a4535253d2743

            SHA1

            de82e7a5ebb7d96a5db9a05cd33d5292b5baf37c

            SHA256

            652318e2da5825a575da660aaef27e1c736c5af3e49e4011cdeb655a2272f453

            SHA512

            8355fbd2674e80913e0b6e7ad8af4c9bae1a0a465e641a7db7b5c7a27e7b7442283526fef05e778dda7a9d292280c97877ec93330fef7968454b78d77b9a4245

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            7d8ea870a7bbbdc269e837cd2b9aaa87

            SHA1

            8ffec4976e719dba949c4e11fddc1cc30b738554

            SHA256

            36edfb6398e544b0b14a24eae90e98265664acefccde0020c7bd85443aee0d62

            SHA512

            9cc3988067cbfcd164d727fc8b6e4a7b6beef43d67a49ef7986ac3fe4cece02eba6fae589075be8129f4edaaa01513352023500815cd23db7d6482cbcf01a258

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            eda874ac0decb674924c3b83eeac0721

            SHA1

            ae2bc1bd499202e718ec63bf6fa31fb48c29773e

            SHA256

            18b49ea2a29ca51596e333632f3f263d3ad6859ab58cacb94e463a51d026ef4d

            SHA512

            87ba2e7f457b8177f9cd9e77717dc0ca7690ca48860280c226a04b4931935a8bac9d133a54615a926c5ec0eb58c5e57cb1f1dbc6646713d35c2f5afd3cddacad

          • memory/568-87-0x0000000000000000-mapping.dmp
          • memory/688-70-0x0000000000000000-mapping.dmp
          • memory/964-61-0x0000000000000000-mapping.dmp
          • memory/1116-86-0x0000000000000000-mapping.dmp
          • memory/1256-81-0x0000000000000000-mapping.dmp
          • memory/1588-62-0x0000000000000000-mapping.dmp
          • memory/1676-80-0x0000000000000000-mapping.dmp
          • memory/1712-64-0x0000000000000000-mapping.dmp
          • memory/1716-58-0x0000000000000000-mapping.dmp
          • memory/1724-57-0x0000000000000000-mapping.dmp
          • memory/1840-76-0x0000000000000000-mapping.dmp
          • memory/2016-54-0x0000000076711000-0x0000000076713000-memory.dmp
            Filesize

            8KB

          • memory/2016-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/2016-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB