Analysis

  • max time kernel
    45s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:25

General

  • Target

    55d6415c91ea3df98681a4605a23fc623a7f28a4355f5274268fd5e5bc57ba0d.exe

  • Size

    602KB

  • MD5

    f067165242822c3c4e9fa93f14df4093

  • SHA1

    5a9d0c362dd8e056d24991ae561357ae4895f386

  • SHA256

    55d6415c91ea3df98681a4605a23fc623a7f28a4355f5274268fd5e5bc57ba0d

  • SHA512

    86616b5194a2fd57aeb96a9d8e404bc7d92e3b0c09eec659b8421aaa5345b3ba1337b9d76b1623ab39b6af6060d30b241aa01627ddbc0b6f36b57426c885bccf

  • SSDEEP

    12288:GIny5DYT1kxQswmyiKUegcO82hDYvhC96I8EKASh:oUT1kxQswER8nvhC96IaZ

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\55d6415c91ea3df98681a4605a23fc623a7f28a4355f5274268fd5e5bc57ba0d.exe
    "C:\Users\Admin\AppData\Local\Temp\55d6415c91ea3df98681a4605a23fc623a7f28a4355f5274268fd5e5bc57ba0d.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:1464
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1472
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:824
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:916
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1372
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:580
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:632
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1556
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:288
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1956
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:960
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1080
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2032
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1512

          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

            854094dc985e1bd43a39fb5b8aadfc16

            SHA1

            a464d9c577b995144cc0ebe8a938a8bb952b8fd9

            SHA256

            c7db79b0fbddf7498856239c0da7c24e9d5ceb6266ce81d930cef370321f81fd

            SHA512

            b28aafb4c06a0b862adad68383896da5a9e75596182043a5bf4a15741d428f2a7e4b38b03e41403d5ba30ee175b9999be3e65380516d08a2cbd0a4233410eaee

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

            244KB

            MD5

            d696a3dfbe49f86b71796a07f849c658

            SHA1

            ccd5697a38fbca2264f2a982ecb7803d9bf07884

            SHA256

            a18095850231efa72d140c634a7450c7c58ce79d77092132ddea47e41d335a66

            SHA512

            9c9f78a5852751d8cb3651e52315e00c76c293fd3165e35f871f881b315732d3b5bb5755be3d8245d9ec2e68f3a2234dffc6dc9767e5f1c035e666239f49ca89

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

            108KB

            MD5

            933e1975396f421290ad8a484fdeec41

            SHA1

            ec8b5e8bd28585b1d5fc83cc887550094f118fbf

            SHA256

            8fb6980ae3486ebdfa43c301401dee137755316becdb349bf1c83795dcb9c22e

            SHA512

            0693f2f583b48088819834c34b6ee7f9ec808cd9ab6bdb75d0fafa3981e71b4525ba93783729880dc687ca80b8a91fb31325dbad8b67679cd2f243e9186a5233

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

            176KB

            MD5

            ff26f9f740d4953e5d068d5b4b98fc3e

            SHA1

            e56f29f63085fae8aedde467ac154158d83232b0

            SHA256

            de584a156d9b2ce913b395a785a86dccac7fcd7f510c490ac57534b39ef4ce9d

            SHA512

            f47b2ffc4205901ec0d682d830fb7172ee5d8a12ad44bd78a0697ddff0446309f3c9751e0b23a45cc12d7dd9ae5264b2dc0f8235caca1532556c083c64cfaaf8

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

            176KB

            MD5

            ff26f9f740d4953e5d068d5b4b98fc3e

            SHA1

            e56f29f63085fae8aedde467ac154158d83232b0

            SHA256

            de584a156d9b2ce913b395a785a86dccac7fcd7f510c490ac57534b39ef4ce9d

            SHA512

            f47b2ffc4205901ec0d682d830fb7172ee5d8a12ad44bd78a0697ddff0446309f3c9751e0b23a45cc12d7dd9ae5264b2dc0f8235caca1532556c083c64cfaaf8

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

            159KB

            MD5

            40b7baa5282b957ce4fd141b2712cb96

            SHA1

            80033912c0a4c99e839533410c360af9f07c0a84

            SHA256

            5605f677810ce73e7b91b5211a7876a4b8f8f909385da271d6b1075e4fe260df

            SHA512

            848cce8a14b48fa543d4f2008c0b0a2783e652490146715494ef946301bdbb135a82bf99cf7898c6732fe6e70a96e5d4e51f3c62a95a48d1e70f6af18b54aea6

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

            159KB

            MD5

            40b7baa5282b957ce4fd141b2712cb96

            SHA1

            80033912c0a4c99e839533410c360af9f07c0a84

            SHA256

            5605f677810ce73e7b91b5211a7876a4b8f8f909385da271d6b1075e4fe260df

            SHA512

            848cce8a14b48fa543d4f2008c0b0a2783e652490146715494ef946301bdbb135a82bf99cf7898c6732fe6e70a96e5d4e51f3c62a95a48d1e70f6af18b54aea6

          • \Users\Admin\AppData\Local\Temp\nso3AD2.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso3AD2.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso3AD2.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso3AD2.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso3AD2.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            854094dc985e1bd43a39fb5b8aadfc16

            SHA1

            a464d9c577b995144cc0ebe8a938a8bb952b8fd9

            SHA256

            c7db79b0fbddf7498856239c0da7c24e9d5ceb6266ce81d930cef370321f81fd

            SHA512

            b28aafb4c06a0b862adad68383896da5a9e75596182043a5bf4a15741d428f2a7e4b38b03e41403d5ba30ee175b9999be3e65380516d08a2cbd0a4233410eaee

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            854094dc985e1bd43a39fb5b8aadfc16

            SHA1

            a464d9c577b995144cc0ebe8a938a8bb952b8fd9

            SHA256

            c7db79b0fbddf7498856239c0da7c24e9d5ceb6266ce81d930cef370321f81fd

            SHA512

            b28aafb4c06a0b862adad68383896da5a9e75596182043a5bf4a15741d428f2a7e4b38b03e41403d5ba30ee175b9999be3e65380516d08a2cbd0a4233410eaee

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            854094dc985e1bd43a39fb5b8aadfc16

            SHA1

            a464d9c577b995144cc0ebe8a938a8bb952b8fd9

            SHA256

            c7db79b0fbddf7498856239c0da7c24e9d5ceb6266ce81d930cef370321f81fd

            SHA512

            b28aafb4c06a0b862adad68383896da5a9e75596182043a5bf4a15741d428f2a7e4b38b03e41403d5ba30ee175b9999be3e65380516d08a2cbd0a4233410eaee

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            d696a3dfbe49f86b71796a07f849c658

            SHA1

            ccd5697a38fbca2264f2a982ecb7803d9bf07884

            SHA256

            a18095850231efa72d140c634a7450c7c58ce79d77092132ddea47e41d335a66

            SHA512

            9c9f78a5852751d8cb3651e52315e00c76c293fd3165e35f871f881b315732d3b5bb5755be3d8245d9ec2e68f3a2234dffc6dc9767e5f1c035e666239f49ca89

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            d696a3dfbe49f86b71796a07f849c658

            SHA1

            ccd5697a38fbca2264f2a982ecb7803d9bf07884

            SHA256

            a18095850231efa72d140c634a7450c7c58ce79d77092132ddea47e41d335a66

            SHA512

            9c9f78a5852751d8cb3651e52315e00c76c293fd3165e35f871f881b315732d3b5bb5755be3d8245d9ec2e68f3a2234dffc6dc9767e5f1c035e666239f49ca89

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            933e1975396f421290ad8a484fdeec41

            SHA1

            ec8b5e8bd28585b1d5fc83cc887550094f118fbf

            SHA256

            8fb6980ae3486ebdfa43c301401dee137755316becdb349bf1c83795dcb9c22e

            SHA512

            0693f2f583b48088819834c34b6ee7f9ec808cd9ab6bdb75d0fafa3981e71b4525ba93783729880dc687ca80b8a91fb31325dbad8b67679cd2f243e9186a5233

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ff26f9f740d4953e5d068d5b4b98fc3e

            SHA1

            e56f29f63085fae8aedde467ac154158d83232b0

            SHA256

            de584a156d9b2ce913b395a785a86dccac7fcd7f510c490ac57534b39ef4ce9d

            SHA512

            f47b2ffc4205901ec0d682d830fb7172ee5d8a12ad44bd78a0697ddff0446309f3c9751e0b23a45cc12d7dd9ae5264b2dc0f8235caca1532556c083c64cfaaf8

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            40b7baa5282b957ce4fd141b2712cb96

            SHA1

            80033912c0a4c99e839533410c360af9f07c0a84

            SHA256

            5605f677810ce73e7b91b5211a7876a4b8f8f909385da271d6b1075e4fe260df

            SHA512

            848cce8a14b48fa543d4f2008c0b0a2783e652490146715494ef946301bdbb135a82bf99cf7898c6732fe6e70a96e5d4e51f3c62a95a48d1e70f6af18b54aea6

          • memory/288-80-0x0000000000000000-mapping.dmp
          • memory/580-64-0x0000000000000000-mapping.dmp
          • memory/632-70-0x0000000000000000-mapping.dmp
          • memory/824-58-0x0000000000000000-mapping.dmp
          • memory/916-61-0x0000000000000000-mapping.dmp
          • memory/960-86-0x0000000000000000-mapping.dmp
          • memory/1080-87-0x0000000000000000-mapping.dmp
          • memory/1372-62-0x0000000000000000-mapping.dmp
          • memory/1464-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1464-54-0x0000000075B51000-0x0000000075B53000-memory.dmp
            Filesize

            8KB

          • memory/1464-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1472-57-0x0000000000000000-mapping.dmp
          • memory/1556-76-0x0000000000000000-mapping.dmp
          • memory/1956-81-0x0000000000000000-mapping.dmp