Analysis

  • max time kernel
    204s
  • max time network
    195s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:52

General

  • Target

    b73916a8f3dd4cdf882427717443b9f9c9645ae4e0d744409ded86a1b0bde35b.exe

  • Size

    446KB

  • MD5

    098c8c021a5d16e04774c3d04971b137

  • SHA1

    a50f5587562950b3eb1f265918108b9a71c1df6a

  • SHA256

    b73916a8f3dd4cdf882427717443b9f9c9645ae4e0d744409ded86a1b0bde35b

  • SHA512

    299bb418787945871d563cae7d62ae5617de1bbef89076a6a95431bf2915e8c21bd65949d34cb94aef0cbe831083f82a8498f897ca462c740f71e23e5c8216b4

  • SSDEEP

    12288:SF/R4ECdG/SXIAnqHydf7UOLgbwp7ObKq:S1bOIAniy97UOLiwpW

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b73916a8f3dd4cdf882427717443b9f9c9645ae4e0d744409ded86a1b0bde35b.exe
    "C:\Users\Admin\AppData\Local\Temp\b73916a8f3dd4cdf882427717443b9f9c9645ae4e0d744409ded86a1b0bde35b.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:5104
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3524
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2480
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2208
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4224
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2000
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4888
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3748
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4360
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2156
          • 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:2224
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:1680
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2252

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nso5E6E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fd4b17f58576081dd76889c0a79d3cb8

            SHA1

            deb80df2ff1a370880c5e0efc10de3c67ec5895c

            SHA256

            88c6d10eab3a12d3a780646a885db842223537fe8de7caddde608b8513696f21

            SHA512

            c60f5636d23e756a03f7f6005f0b53675104eb165fa6e9bed5d8f8f2ffac3d442659098c49cd77f29b748422debd9d23899d8e84eb7c904c446a5f15b8134682

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fd4b17f58576081dd76889c0a79d3cb8

            SHA1

            deb80df2ff1a370880c5e0efc10de3c67ec5895c

            SHA256

            88c6d10eab3a12d3a780646a885db842223537fe8de7caddde608b8513696f21

            SHA512

            c60f5636d23e756a03f7f6005f0b53675104eb165fa6e9bed5d8f8f2ffac3d442659098c49cd77f29b748422debd9d23899d8e84eb7c904c446a5f15b8134682

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fd4b17f58576081dd76889c0a79d3cb8

            SHA1

            deb80df2ff1a370880c5e0efc10de3c67ec5895c

            SHA256

            88c6d10eab3a12d3a780646a885db842223537fe8de7caddde608b8513696f21

            SHA512

            c60f5636d23e756a03f7f6005f0b53675104eb165fa6e9bed5d8f8f2ffac3d442659098c49cd77f29b748422debd9d23899d8e84eb7c904c446a5f15b8134682

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            fd4b17f58576081dd76889c0a79d3cb8

            SHA1

            deb80df2ff1a370880c5e0efc10de3c67ec5895c

            SHA256

            88c6d10eab3a12d3a780646a885db842223537fe8de7caddde608b8513696f21

            SHA512

            c60f5636d23e756a03f7f6005f0b53675104eb165fa6e9bed5d8f8f2ffac3d442659098c49cd77f29b748422debd9d23899d8e84eb7c904c446a5f15b8134682

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a33109fd9b18fd7ed3fa64d59dbf92d2

            SHA1

            ff78a9705e4dee0dc093e4aec82b276020b6d40d

            SHA256

            adfc367521714246e56a5a555f0478adf34cb5031ecd0a43ce81908cd7275d54

            SHA512

            c418b5553bb8a7979e3b4ec3b893d3b16eebc59f935e3617b1f1ea26d4150a3ccfcc8b3fae7441c4d2975c48b6307bec78756e1a373638a5ded0a8b7641c0704

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a33109fd9b18fd7ed3fa64d59dbf92d2

            SHA1

            ff78a9705e4dee0dc093e4aec82b276020b6d40d

            SHA256

            adfc367521714246e56a5a555f0478adf34cb5031ecd0a43ce81908cd7275d54

            SHA512

            c418b5553bb8a7979e3b4ec3b893d3b16eebc59f935e3617b1f1ea26d4150a3ccfcc8b3fae7441c4d2975c48b6307bec78756e1a373638a5ded0a8b7641c0704

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            a33109fd9b18fd7ed3fa64d59dbf92d2

            SHA1

            ff78a9705e4dee0dc093e4aec82b276020b6d40d

            SHA256

            adfc367521714246e56a5a555f0478adf34cb5031ecd0a43ce81908cd7275d54

            SHA512

            c418b5553bb8a7979e3b4ec3b893d3b16eebc59f935e3617b1f1ea26d4150a3ccfcc8b3fae7441c4d2975c48b6307bec78756e1a373638a5ded0a8b7641c0704

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8384734df7baf9e47a6cdea64f4e0e14

            SHA1

            5364d16c446f89f79edaeff75bf5b5e8aa3fabc7

            SHA256

            bc1d5807ac9243b237abe0eccc2c51ff2eced77b20dafdf1948241bf5f80b336

            SHA512

            7c88117dc293494a53d4c4b4b8e7b5657424ddd72c859eb6ca390a2e981e9c6b7e8ba9012ca0ee0a5c28ca218b97a3ea2b861eb2b1bed46de9e011b8a1f9946c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            8384734df7baf9e47a6cdea64f4e0e14

            SHA1

            5364d16c446f89f79edaeff75bf5b5e8aa3fabc7

            SHA256

            bc1d5807ac9243b237abe0eccc2c51ff2eced77b20dafdf1948241bf5f80b336

            SHA512

            7c88117dc293494a53d4c4b4b8e7b5657424ddd72c859eb6ca390a2e981e9c6b7e8ba9012ca0ee0a5c28ca218b97a3ea2b861eb2b1bed46de9e011b8a1f9946c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a2466bf3b2c11b250b7c878319ca4058

            SHA1

            e920ca73043a6a3498cf1bf6cda2341f36b288e3

            SHA256

            cefae44ff24ebd9f1faed108a3612fbbce9c726a239d8e7b9741963a9db95b77

            SHA512

            ef4afaede85639e3ba5312ccebb5500f9203cb0118a341624dd0da5d0bf8dc2e6534c37ab1fc5dc1c6e30cceb27f9fc766da5b40422270c001a843d5758a4d6b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a2466bf3b2c11b250b7c878319ca4058

            SHA1

            e920ca73043a6a3498cf1bf6cda2341f36b288e3

            SHA256

            cefae44ff24ebd9f1faed108a3612fbbce9c726a239d8e7b9741963a9db95b77

            SHA512

            ef4afaede85639e3ba5312ccebb5500f9203cb0118a341624dd0da5d0bf8dc2e6534c37ab1fc5dc1c6e30cceb27f9fc766da5b40422270c001a843d5758a4d6b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a2466bf3b2c11b250b7c878319ca4058

            SHA1

            e920ca73043a6a3498cf1bf6cda2341f36b288e3

            SHA256

            cefae44ff24ebd9f1faed108a3612fbbce9c726a239d8e7b9741963a9db95b77

            SHA512

            ef4afaede85639e3ba5312ccebb5500f9203cb0118a341624dd0da5d0bf8dc2e6534c37ab1fc5dc1c6e30cceb27f9fc766da5b40422270c001a843d5758a4d6b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b950e73567330a7e8ca6067a813fe5c0

            SHA1

            f3e77d315d236fd54b14b0ca55a81265c9c4ccc2

            SHA256

            d1aec1199d2fb9c53074f9bbc090a302cb9806c524ac36df0c6d574b2e070281

            SHA512

            23a0cc1bce430d06d26baa701331d9675d12eae48ac6ef7562a26c903a0ecb405a80c02eb37fa7bd158783c434ab18a9d2f94437cbc128feafa9d4f79aa4e07d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b950e73567330a7e8ca6067a813fe5c0

            SHA1

            f3e77d315d236fd54b14b0ca55a81265c9c4ccc2

            SHA256

            d1aec1199d2fb9c53074f9bbc090a302cb9806c524ac36df0c6d574b2e070281

            SHA512

            23a0cc1bce430d06d26baa701331d9675d12eae48ac6ef7562a26c903a0ecb405a80c02eb37fa7bd158783c434ab18a9d2f94437cbc128feafa9d4f79aa4e07d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b950e73567330a7e8ca6067a813fe5c0

            SHA1

            f3e77d315d236fd54b14b0ca55a81265c9c4ccc2

            SHA256

            d1aec1199d2fb9c53074f9bbc090a302cb9806c524ac36df0c6d574b2e070281

            SHA512

            23a0cc1bce430d06d26baa701331d9675d12eae48ac6ef7562a26c903a0ecb405a80c02eb37fa7bd158783c434ab18a9d2f94437cbc128feafa9d4f79aa4e07d

          • memory/664-164-0x0000000000000000-mapping.dmp

          • memory/2000-141-0x0000000000000000-mapping.dmp

          • memory/2156-158-0x0000000000000000-mapping.dmp

          • memory/2208-139-0x0000000000000000-mapping.dmp

          • memory/2224-165-0x0000000000000000-mapping.dmp

          • memory/2480-136-0x0000000000000000-mapping.dmp

          • memory/3524-135-0x0000000000000000-mapping.dmp

          • memory/3748-152-0x0000000000000000-mapping.dmp

          • memory/4224-140-0x0000000000000000-mapping.dmp

          • memory/4360-157-0x0000000000000000-mapping.dmp

          • memory/4888-146-0x0000000000000000-mapping.dmp