Analysis

  • max time kernel
    34s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    a78d8f69b1d0bd351e195f4d1bd58bac489ccb624c95b3fdec2d04a224acc32d.exe

  • Size

    602KB

  • MD5

    6a3fb968e3e6f751bf18836bda686bdc

  • SHA1

    189e94b120c942c073a1fb4e3f1619338617bf05

  • SHA256

    a78d8f69b1d0bd351e195f4d1bd58bac489ccb624c95b3fdec2d04a224acc32d

  • SHA512

    3c04d5bf1df8102cef893070cf53bf4724b43e28e05a4813426ffeb735017d9e27394450ce60e89bc895217148ebb7667dda11a908a39cb539f943bab94b27d8

  • SSDEEP

    12288:tIny5DYTcIG69KcmphdVdKgUjWGulyORd3ZwAnCy0J:5UTcZARmphd3iqGuNvZw

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\a78d8f69b1d0bd351e195f4d1bd58bac489ccb624c95b3fdec2d04a224acc32d.exe
    "C:\Users\Admin\AppData\Local\Temp\a78d8f69b1d0bd351e195f4d1bd58bac489ccb624c95b3fdec2d04a224acc32d.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:1708
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1640
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1980
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1976
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:940
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1104
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1788
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1144
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:520
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2032
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:664
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:524
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1928
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1628

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e4edd0abf38a996e1d8e254a9b0915fd

            SHA1

            56e6670da3ae4d683e4704db52aedccdd3f10abe

            SHA256

            0760e05000386b61424d8ca8c835a27ecbe17f4d6ee7474391cb326dd2954b25

            SHA512

            28c7dac539ef5c253009f8aba8f92c5d55eb82135dc51312521e2f5abd9a7efadf8d878c4fda0a38fe6f5a7638f7e3e4836890fb74e7d60b678ca6bac32d37c0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            92eb30bdb9ff4d293405b2d7cac9de2c

            SHA1

            db84e55c75a57dc0ca482917e38a54a95d6075cc

            SHA256

            71938e844d0a7e61df25f5ce4074b93b2bc00bca13da2240ec7e349f3f3ffaff

            SHA512

            e523b449e83f121f24f2abb2326d220a4b0be15d063a668e972809ff856c37a01f04f10947e76672418626dd012f62bf4c3fbb306dd84117f71fd00987d5a710

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            90d4ee75ecf40c00487ca454e2800f5c

            SHA1

            d8aef75c59bd523323daf94388acfa34f5466b81

            SHA256

            1b2f28700d6f8966c089022b9278723b5108d54299402fbdd49c09d24736940d

            SHA512

            b1352847509dc14f035f933ce80e53869f193e5353df7b08f7231c809b5282688b38fdd64db46d1693fb469218865767f461b360d2dfd5bfdb304894362d11b6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7ec253f18624f3629b5564b19ff7bf9c

            SHA1

            6f54c40762d81d9a90e73647c5ee72ec175913b8

            SHA256

            c745dc27540f64f4cee8a3a84854ed68ebf26c64c069049ac5034ed7f55c6b2c

            SHA512

            83493a0be2eabe5a461d17f7d87c8587b608ed05380114e8e805f92b9240d58fd710a69d69d1430a301777f48773a2e3f9ab652d7b8ffd319a0a2ce5b57ef5d4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7ec253f18624f3629b5564b19ff7bf9c

            SHA1

            6f54c40762d81d9a90e73647c5ee72ec175913b8

            SHA256

            c745dc27540f64f4cee8a3a84854ed68ebf26c64c069049ac5034ed7f55c6b2c

            SHA512

            83493a0be2eabe5a461d17f7d87c8587b608ed05380114e8e805f92b9240d58fd710a69d69d1430a301777f48773a2e3f9ab652d7b8ffd319a0a2ce5b57ef5d4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            bb2cdf95339ab6eb9e880576ac5d440a

            SHA1

            00b0b83c412192cbe0e272df6129a9f4059c153b

            SHA256

            576ec8b4b5f51473e17e443988f3b6eaa9c32164f6c83c6ca7eabcd1249deae7

            SHA512

            32e3929385d22b78e7f5fa07dd630365cb90399ef03a83180f92f1e55d17aaa61f62ad8bfee2df93a64254cb4b83d40566853de695ae0fa11723bbd1bc9760cb

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            bb2cdf95339ab6eb9e880576ac5d440a

            SHA1

            00b0b83c412192cbe0e272df6129a9f4059c153b

            SHA256

            576ec8b4b5f51473e17e443988f3b6eaa9c32164f6c83c6ca7eabcd1249deae7

            SHA512

            32e3929385d22b78e7f5fa07dd630365cb90399ef03a83180f92f1e55d17aaa61f62ad8bfee2df93a64254cb4b83d40566853de695ae0fa11723bbd1bc9760cb

          • \Users\Admin\AppData\Local\Temp\nsd7ED3.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd7ED3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd7ED3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd7ED3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd7ED3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e4edd0abf38a996e1d8e254a9b0915fd

            SHA1

            56e6670da3ae4d683e4704db52aedccdd3f10abe

            SHA256

            0760e05000386b61424d8ca8c835a27ecbe17f4d6ee7474391cb326dd2954b25

            SHA512

            28c7dac539ef5c253009f8aba8f92c5d55eb82135dc51312521e2f5abd9a7efadf8d878c4fda0a38fe6f5a7638f7e3e4836890fb74e7d60b678ca6bac32d37c0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e4edd0abf38a996e1d8e254a9b0915fd

            SHA1

            56e6670da3ae4d683e4704db52aedccdd3f10abe

            SHA256

            0760e05000386b61424d8ca8c835a27ecbe17f4d6ee7474391cb326dd2954b25

            SHA512

            28c7dac539ef5c253009f8aba8f92c5d55eb82135dc51312521e2f5abd9a7efadf8d878c4fda0a38fe6f5a7638f7e3e4836890fb74e7d60b678ca6bac32d37c0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e4edd0abf38a996e1d8e254a9b0915fd

            SHA1

            56e6670da3ae4d683e4704db52aedccdd3f10abe

            SHA256

            0760e05000386b61424d8ca8c835a27ecbe17f4d6ee7474391cb326dd2954b25

            SHA512

            28c7dac539ef5c253009f8aba8f92c5d55eb82135dc51312521e2f5abd9a7efadf8d878c4fda0a38fe6f5a7638f7e3e4836890fb74e7d60b678ca6bac32d37c0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            92eb30bdb9ff4d293405b2d7cac9de2c

            SHA1

            db84e55c75a57dc0ca482917e38a54a95d6075cc

            SHA256

            71938e844d0a7e61df25f5ce4074b93b2bc00bca13da2240ec7e349f3f3ffaff

            SHA512

            e523b449e83f121f24f2abb2326d220a4b0be15d063a668e972809ff856c37a01f04f10947e76672418626dd012f62bf4c3fbb306dd84117f71fd00987d5a710

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            92eb30bdb9ff4d293405b2d7cac9de2c

            SHA1

            db84e55c75a57dc0ca482917e38a54a95d6075cc

            SHA256

            71938e844d0a7e61df25f5ce4074b93b2bc00bca13da2240ec7e349f3f3ffaff

            SHA512

            e523b449e83f121f24f2abb2326d220a4b0be15d063a668e972809ff856c37a01f04f10947e76672418626dd012f62bf4c3fbb306dd84117f71fd00987d5a710

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            90d4ee75ecf40c00487ca454e2800f5c

            SHA1

            d8aef75c59bd523323daf94388acfa34f5466b81

            SHA256

            1b2f28700d6f8966c089022b9278723b5108d54299402fbdd49c09d24736940d

            SHA512

            b1352847509dc14f035f933ce80e53869f193e5353df7b08f7231c809b5282688b38fdd64db46d1693fb469218865767f461b360d2dfd5bfdb304894362d11b6

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7ec253f18624f3629b5564b19ff7bf9c

            SHA1

            6f54c40762d81d9a90e73647c5ee72ec175913b8

            SHA256

            c745dc27540f64f4cee8a3a84854ed68ebf26c64c069049ac5034ed7f55c6b2c

            SHA512

            83493a0be2eabe5a461d17f7d87c8587b608ed05380114e8e805f92b9240d58fd710a69d69d1430a301777f48773a2e3f9ab652d7b8ffd319a0a2ce5b57ef5d4

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            bb2cdf95339ab6eb9e880576ac5d440a

            SHA1

            00b0b83c412192cbe0e272df6129a9f4059c153b

            SHA256

            576ec8b4b5f51473e17e443988f3b6eaa9c32164f6c83c6ca7eabcd1249deae7

            SHA512

            32e3929385d22b78e7f5fa07dd630365cb90399ef03a83180f92f1e55d17aaa61f62ad8bfee2df93a64254cb4b83d40566853de695ae0fa11723bbd1bc9760cb

          • memory/520-80-0x0000000000000000-mapping.dmp

          • memory/524-87-0x0000000000000000-mapping.dmp

          • memory/664-86-0x0000000000000000-mapping.dmp

          • memory/940-62-0x0000000000000000-mapping.dmp

          • memory/1104-64-0x0000000000000000-mapping.dmp

          • memory/1144-76-0x0000000000000000-mapping.dmp

          • memory/1640-58-0x0000000000000000-mapping.dmp

          • memory/1708-54-0x0000000075451000-0x0000000075453000-memory.dmp

            Filesize

            8KB

          • memory/1708-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1708-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1788-70-0x0000000000000000-mapping.dmp

          • memory/1976-61-0x0000000000000000-mapping.dmp

          • memory/1980-59-0x0000000000000000-mapping.dmp

          • memory/2032-81-0x0000000000000000-mapping.dmp