Analysis

  • max time kernel
    67s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:31

General

  • Target

    24ef7bb64e42b4d3d7b4e7f85f8b5f455776b19de727de7dc8c56cbdb3697489.exe

  • Size

    603KB

  • MD5

    8bac5eeca2660763a27184d551ee2254

  • SHA1

    95fd12a61b9291010d7374c960e13d98628d30e6

  • SHA256

    24ef7bb64e42b4d3d7b4e7f85f8b5f455776b19de727de7dc8c56cbdb3697489

  • SHA512

    b04ace1816e9cb2d10b402a9666fbcac900b410470d5eac0fe980f59991a41482ac2c894db2e994307da29efb3d5ac9c94576de7a610f2c326c17aaf9ba7c393

  • SSDEEP

    12288:zIny5DYTMEmG2w5Wl7Ar8zrTs0L23qQI0Lc9unnWpO:bUTMExYlbrTxqHIic8nK

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\24ef7bb64e42b4d3d7b4e7f85f8b5f455776b19de727de7dc8c56cbdb3697489.exe
    "C:\Users\Admin\AppData\Local\Temp\24ef7bb64e42b4d3d7b4e7f85f8b5f455776b19de727de7dc8c56cbdb3697489.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:2040
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:684
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:324
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:268
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:520
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1548
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1200
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1344
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1680
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1300
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1636
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:284
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1956

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ae1318d062e6d2788b2627d546813804

            SHA1

            9f4cf6cc9c56c16ff1317330fd0eb072542f593b

            SHA256

            9a1cdaaa17fa2a8228051543d5d9cefe6259ccdf71725700ed08af95541c82ab

            SHA512

            881a90f26d9150e9708024c5310dc7718fa01ca4bca8aed6a6268914f9f0d5ebe78f3de458bdfc79bb588dd4bcc6aee1a00b02856269c6c9fec1e1cddba16d1e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            13f3b3b908f04859f69523cf774f63b4

            SHA1

            57d6e140b100d7b224bf6e8062f6b1ee043bde84

            SHA256

            24e3f62fd35b8b76ba50e906d3cbc9f8c70eed9965f3135e80abc72b5aa998ee

            SHA512

            99de1562d5588ee0478321a6f9dea49e816f712d9fdb077692fed1a373c6468164b768061d7e23b9ebcde6a3add3f4b2f079bf7d3050b19420c97b49d7619a0e

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            06305253aaf32927f645c7dce655c51d

            SHA1

            ee12aa486636cbd5cf9b5a0353423efb5b158b63

            SHA256

            556ebf900dfca7b7ff1d881fa915444704ca83b99c71943cccbffb2a9315f921

            SHA512

            1d72f02a80338c5c82b0f1fcad1086ec688b506248a6ec5f8c0e9496c06495d55c9507d084757cb215ee6ea06c38fcac4e111f89dbfac6c5ede70e30a3257ce1

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2f7deed0d7a842a6a0bef2942c45cef4

            SHA1

            9bbd61fb1a3eadb01387451ce982ea16a22b9812

            SHA256

            9f8967fc3ec5d551004103e34c37a46274064873e2558ecbccfea086445e7193

            SHA512

            f3ecd560e16d1da9b0a3a67aaf5f7db0e81a330ee5d0e1bba1b3994e6d6d31889bb4cae5723ea2f7a220702021499a81be075e320eb65feedc7137b8067472c4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2f7deed0d7a842a6a0bef2942c45cef4

            SHA1

            9bbd61fb1a3eadb01387451ce982ea16a22b9812

            SHA256

            9f8967fc3ec5d551004103e34c37a46274064873e2558ecbccfea086445e7193

            SHA512

            f3ecd560e16d1da9b0a3a67aaf5f7db0e81a330ee5d0e1bba1b3994e6d6d31889bb4cae5723ea2f7a220702021499a81be075e320eb65feedc7137b8067472c4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            772bf2b2bb4fc90551d12263f316ed40

            SHA1

            12f5d3c97c825408968f0abb4c5f9a9d0bd51c3d

            SHA256

            d849b2d0ef828adece6edde9a5092e4f00ab9e4216ad25deefd095e106ae9938

            SHA512

            6af26cc0a52c32bb2b0aa2de72390c9f75e8fc3497ece826c161fd520778dc3bb9a3a5c84d3a1ccad488992e590d417bdd319ed2098e65042f724daacecb37f5

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            772bf2b2bb4fc90551d12263f316ed40

            SHA1

            12f5d3c97c825408968f0abb4c5f9a9d0bd51c3d

            SHA256

            d849b2d0ef828adece6edde9a5092e4f00ab9e4216ad25deefd095e106ae9938

            SHA512

            6af26cc0a52c32bb2b0aa2de72390c9f75e8fc3497ece826c161fd520778dc3bb9a3a5c84d3a1ccad488992e590d417bdd319ed2098e65042f724daacecb37f5

          • \Users\Admin\AppData\Local\Temp\nsyA824.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyA824.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyA824.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyA824.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyA824.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ae1318d062e6d2788b2627d546813804

            SHA1

            9f4cf6cc9c56c16ff1317330fd0eb072542f593b

            SHA256

            9a1cdaaa17fa2a8228051543d5d9cefe6259ccdf71725700ed08af95541c82ab

            SHA512

            881a90f26d9150e9708024c5310dc7718fa01ca4bca8aed6a6268914f9f0d5ebe78f3de458bdfc79bb588dd4bcc6aee1a00b02856269c6c9fec1e1cddba16d1e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ae1318d062e6d2788b2627d546813804

            SHA1

            9f4cf6cc9c56c16ff1317330fd0eb072542f593b

            SHA256

            9a1cdaaa17fa2a8228051543d5d9cefe6259ccdf71725700ed08af95541c82ab

            SHA512

            881a90f26d9150e9708024c5310dc7718fa01ca4bca8aed6a6268914f9f0d5ebe78f3de458bdfc79bb588dd4bcc6aee1a00b02856269c6c9fec1e1cddba16d1e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ae1318d062e6d2788b2627d546813804

            SHA1

            9f4cf6cc9c56c16ff1317330fd0eb072542f593b

            SHA256

            9a1cdaaa17fa2a8228051543d5d9cefe6259ccdf71725700ed08af95541c82ab

            SHA512

            881a90f26d9150e9708024c5310dc7718fa01ca4bca8aed6a6268914f9f0d5ebe78f3de458bdfc79bb588dd4bcc6aee1a00b02856269c6c9fec1e1cddba16d1e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            13f3b3b908f04859f69523cf774f63b4

            SHA1

            57d6e140b100d7b224bf6e8062f6b1ee043bde84

            SHA256

            24e3f62fd35b8b76ba50e906d3cbc9f8c70eed9965f3135e80abc72b5aa998ee

            SHA512

            99de1562d5588ee0478321a6f9dea49e816f712d9fdb077692fed1a373c6468164b768061d7e23b9ebcde6a3add3f4b2f079bf7d3050b19420c97b49d7619a0e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            13f3b3b908f04859f69523cf774f63b4

            SHA1

            57d6e140b100d7b224bf6e8062f6b1ee043bde84

            SHA256

            24e3f62fd35b8b76ba50e906d3cbc9f8c70eed9965f3135e80abc72b5aa998ee

            SHA512

            99de1562d5588ee0478321a6f9dea49e816f712d9fdb077692fed1a373c6468164b768061d7e23b9ebcde6a3add3f4b2f079bf7d3050b19420c97b49d7619a0e

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            06305253aaf32927f645c7dce655c51d

            SHA1

            ee12aa486636cbd5cf9b5a0353423efb5b158b63

            SHA256

            556ebf900dfca7b7ff1d881fa915444704ca83b99c71943cccbffb2a9315f921

            SHA512

            1d72f02a80338c5c82b0f1fcad1086ec688b506248a6ec5f8c0e9496c06495d55c9507d084757cb215ee6ea06c38fcac4e111f89dbfac6c5ede70e30a3257ce1

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2f7deed0d7a842a6a0bef2942c45cef4

            SHA1

            9bbd61fb1a3eadb01387451ce982ea16a22b9812

            SHA256

            9f8967fc3ec5d551004103e34c37a46274064873e2558ecbccfea086445e7193

            SHA512

            f3ecd560e16d1da9b0a3a67aaf5f7db0e81a330ee5d0e1bba1b3994e6d6d31889bb4cae5723ea2f7a220702021499a81be075e320eb65feedc7137b8067472c4

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            772bf2b2bb4fc90551d12263f316ed40

            SHA1

            12f5d3c97c825408968f0abb4c5f9a9d0bd51c3d

            SHA256

            d849b2d0ef828adece6edde9a5092e4f00ab9e4216ad25deefd095e106ae9938

            SHA512

            6af26cc0a52c32bb2b0aa2de72390c9f75e8fc3497ece826c161fd520778dc3bb9a3a5c84d3a1ccad488992e590d417bdd319ed2098e65042f724daacecb37f5

          • memory/268-61-0x0000000000000000-mapping.dmp

          • memory/324-60-0x0000000000000000-mapping.dmp

          • memory/520-64-0x0000000000000000-mapping.dmp

          • memory/684-58-0x0000000000000000-mapping.dmp

          • memory/944-57-0x0000000000000000-mapping.dmp

          • memory/1200-77-0x0000000000000000-mapping.dmp

          • memory/1300-87-0x0000000000000000-mapping.dmp

          • memory/1344-81-0x0000000000000000-mapping.dmp

          • memory/1548-70-0x0000000000000000-mapping.dmp

          • memory/1636-88-0x0000000000000000-mapping.dmp

          • memory/1680-82-0x0000000000000000-mapping.dmp

          • memory/2040-54-0x00000000761E1000-0x00000000761E3000-memory.dmp

            Filesize

            8KB

          • memory/2040-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2040-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2040-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB