Analysis

  • max time kernel
    59s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:30

General

  • Target

    2a864926355cad45909dc78d924072804b48312756821b3421d4d0ffddd11a68.exe

  • Size

    602KB

  • MD5

    32c80e6d71ac717d336d8b2d812227c5

  • SHA1

    812a554c7f35ad7bdcbfd14c70b4ed4b0f976189

  • SHA256

    2a864926355cad45909dc78d924072804b48312756821b3421d4d0ffddd11a68

  • SHA512

    34cbfe640147cd0c061e224686546751e11af00b0ed50ac5db976ee570909575c546673ba4c83837feeed59b6786cc4b4043d8f79a02d7d3a7ed74f7c6b6f13a

  • SSDEEP

    12288:2Iny5DYTgS0+z7NQprRSzS/fBpj46lV3mc1twk+ocPA3:4UTgS0Y7NQp3BJVWlE

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\2a864926355cad45909dc78d924072804b48312756821b3421d4d0ffddd11a68.exe
    "C:\Users\Admin\AppData\Local\Temp\2a864926355cad45909dc78d924072804b48312756821b3421d4d0ffddd11a68.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:1348
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:472
      • 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:652
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1196
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:892
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1660
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:756
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:596
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:680
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:872
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1436
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1540
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1820

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            902e77a4046d1b0734cab577a5cd2939

            SHA1

            69ace76845b2a4e2c0d38a7039d7817759eb87be

            SHA256

            03f703c166b5a4c2ac37abecf9e6c767dc8dd16f103c3e9adc5eccfb69a2acee

            SHA512

            afd64cfec9115561aecc1ac478615d586b4eb530f12fb6f70abd9673a2a391c8672c47c5f6be1772cd8b4b0ddc31ddac5b4786d59384aa4bc78cfe7ce60e0b75

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6fc5786af2c2f1a3a37728131eb8d43a

            SHA1

            84cc69b64bad0e67dc9b92b55d90033aa6339f7f

            SHA256

            62aa067f5b6ddd67d841f9207d0ea617cc22fd614ebdff8c6548a02d916d5507

            SHA512

            fede185dc55269f9b780e044f034546b8ce8754fc11814296ffcdc9ac084c9ca6307bc044aba69b501c68df53946648465fe80c34f9360823c5c5957b1b5f852

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            cc54789b6adab8f7ea12f5ff21ac0dce

            SHA1

            20d010fdda52ff588e330cf09ec4aad811a3a5bd

            SHA256

            db11a3e238a8adc9fe76b4c58532e33bf606f86461b52678daa1cce50ba990fb

            SHA512

            7eb43dd7d8357a17efd9f7d5220f374b091f7ceefceffc6972ed3b9f7149a06a6d3b39f20b33b4cbba12161323f8feb9957ec71d8b3bff6b6dfcd292cfb134f8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0e55521cfb32ed492ebdf48db32c9ff4

            SHA1

            1b0e178d792da93535597be7ae7cee36f72d0471

            SHA256

            d36ef1a2e0e41de5e2a1cbc44e5a432412d07f85d1d3c3c6151de9c8f8de5e44

            SHA512

            76f146ea9fdfc3bab600a02f0f292eddf81aadf431d0a1200baa4b4b7b657e6c5b5e6fe38fbc719938c425f5178db452901772534ce4cf7d0f3342fcf64e9304

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0e55521cfb32ed492ebdf48db32c9ff4

            SHA1

            1b0e178d792da93535597be7ae7cee36f72d0471

            SHA256

            d36ef1a2e0e41de5e2a1cbc44e5a432412d07f85d1d3c3c6151de9c8f8de5e44

            SHA512

            76f146ea9fdfc3bab600a02f0f292eddf81aadf431d0a1200baa4b4b7b657e6c5b5e6fe38fbc719938c425f5178db452901772534ce4cf7d0f3342fcf64e9304

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            52d5a74e73601c5ef140d2055c3e147a

            SHA1

            d9b0474574b9bc880587b1df33516944f4c3a34f

            SHA256

            70a55268a36a2f3717f5091e0af94587a768b32305e7d39bef8cf59a3cf8163d

            SHA512

            8ca97e3051b6296f9495832ca5321d3e5458abc5dbc86ff5d24758069b4c72d8a5874726da6fc1ca12539ad4c2cf2b0db57b978a442f42e8f344171f78991156

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            52d5a74e73601c5ef140d2055c3e147a

            SHA1

            d9b0474574b9bc880587b1df33516944f4c3a34f

            SHA256

            70a55268a36a2f3717f5091e0af94587a768b32305e7d39bef8cf59a3cf8163d

            SHA512

            8ca97e3051b6296f9495832ca5321d3e5458abc5dbc86ff5d24758069b4c72d8a5874726da6fc1ca12539ad4c2cf2b0db57b978a442f42e8f344171f78991156

          • \Users\Admin\AppData\Local\Temp\nsoB4B2.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoB4B2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoB4B2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoB4B2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoB4B2.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            902e77a4046d1b0734cab577a5cd2939

            SHA1

            69ace76845b2a4e2c0d38a7039d7817759eb87be

            SHA256

            03f703c166b5a4c2ac37abecf9e6c767dc8dd16f103c3e9adc5eccfb69a2acee

            SHA512

            afd64cfec9115561aecc1ac478615d586b4eb530f12fb6f70abd9673a2a391c8672c47c5f6be1772cd8b4b0ddc31ddac5b4786d59384aa4bc78cfe7ce60e0b75

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            902e77a4046d1b0734cab577a5cd2939

            SHA1

            69ace76845b2a4e2c0d38a7039d7817759eb87be

            SHA256

            03f703c166b5a4c2ac37abecf9e6c767dc8dd16f103c3e9adc5eccfb69a2acee

            SHA512

            afd64cfec9115561aecc1ac478615d586b4eb530f12fb6f70abd9673a2a391c8672c47c5f6be1772cd8b4b0ddc31ddac5b4786d59384aa4bc78cfe7ce60e0b75

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            902e77a4046d1b0734cab577a5cd2939

            SHA1

            69ace76845b2a4e2c0d38a7039d7817759eb87be

            SHA256

            03f703c166b5a4c2ac37abecf9e6c767dc8dd16f103c3e9adc5eccfb69a2acee

            SHA512

            afd64cfec9115561aecc1ac478615d586b4eb530f12fb6f70abd9673a2a391c8672c47c5f6be1772cd8b4b0ddc31ddac5b4786d59384aa4bc78cfe7ce60e0b75

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6fc5786af2c2f1a3a37728131eb8d43a

            SHA1

            84cc69b64bad0e67dc9b92b55d90033aa6339f7f

            SHA256

            62aa067f5b6ddd67d841f9207d0ea617cc22fd614ebdff8c6548a02d916d5507

            SHA512

            fede185dc55269f9b780e044f034546b8ce8754fc11814296ffcdc9ac084c9ca6307bc044aba69b501c68df53946648465fe80c34f9360823c5c5957b1b5f852

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6fc5786af2c2f1a3a37728131eb8d43a

            SHA1

            84cc69b64bad0e67dc9b92b55d90033aa6339f7f

            SHA256

            62aa067f5b6ddd67d841f9207d0ea617cc22fd614ebdff8c6548a02d916d5507

            SHA512

            fede185dc55269f9b780e044f034546b8ce8754fc11814296ffcdc9ac084c9ca6307bc044aba69b501c68df53946648465fe80c34f9360823c5c5957b1b5f852

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            cc54789b6adab8f7ea12f5ff21ac0dce

            SHA1

            20d010fdda52ff588e330cf09ec4aad811a3a5bd

            SHA256

            db11a3e238a8adc9fe76b4c58532e33bf606f86461b52678daa1cce50ba990fb

            SHA512

            7eb43dd7d8357a17efd9f7d5220f374b091f7ceefceffc6972ed3b9f7149a06a6d3b39f20b33b4cbba12161323f8feb9957ec71d8b3bff6b6dfcd292cfb134f8

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0e55521cfb32ed492ebdf48db32c9ff4

            SHA1

            1b0e178d792da93535597be7ae7cee36f72d0471

            SHA256

            d36ef1a2e0e41de5e2a1cbc44e5a432412d07f85d1d3c3c6151de9c8f8de5e44

            SHA512

            76f146ea9fdfc3bab600a02f0f292eddf81aadf431d0a1200baa4b4b7b657e6c5b5e6fe38fbc719938c425f5178db452901772534ce4cf7d0f3342fcf64e9304

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            52d5a74e73601c5ef140d2055c3e147a

            SHA1

            d9b0474574b9bc880587b1df33516944f4c3a34f

            SHA256

            70a55268a36a2f3717f5091e0af94587a768b32305e7d39bef8cf59a3cf8163d

            SHA512

            8ca97e3051b6296f9495832ca5321d3e5458abc5dbc86ff5d24758069b4c72d8a5874726da6fc1ca12539ad4c2cf2b0db57b978a442f42e8f344171f78991156

          • memory/472-57-0x0000000000000000-mapping.dmp

          • memory/596-81-0x0000000000000000-mapping.dmp

          • memory/652-61-0x0000000000000000-mapping.dmp

          • memory/680-82-0x0000000000000000-mapping.dmp

          • memory/756-77-0x0000000000000000-mapping.dmp

          • memory/872-87-0x0000000000000000-mapping.dmp

          • memory/892-64-0x0000000000000000-mapping.dmp

          • memory/1196-62-0x0000000000000000-mapping.dmp

          • memory/1220-58-0x0000000000000000-mapping.dmp

          • memory/1348-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1348-54-0x00000000759F1000-0x00000000759F3000-memory.dmp

            Filesize

            8KB

          • memory/1348-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1348-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1436-88-0x0000000000000000-mapping.dmp

          • memory/1660-71-0x0000000000000000-mapping.dmp