Analysis

  • max time kernel
    147s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:11

General

  • Target

    cfc3e6113bb717c62b053e499366debabc42f746e8aa6a96121632d26b5ddd67.exe

  • Size

    602KB

  • MD5

    4984dc93f2d86dfbf77d7e13aaaff7a7

  • SHA1

    1ee4eb8310bf5036e861f6e416526876fde945db

  • SHA256

    cfc3e6113bb717c62b053e499366debabc42f746e8aa6a96121632d26b5ddd67

  • SHA512

    3b1d60ef5f4dd1fa6c627d26c02866de20449fb1a67733312bb30339562ef00fd2a2dc23fd3afaaeec594cb2d35dabb6d89470b76ce79ca05556fbb718a4e848

  • SSDEEP

    12288:2Iny5DYTjUWxjnv99gXLWSS/50laCsDAjvSsmbDd7:4UTjUajnv99KWSS/50laCsDuvS5bDd7

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\cfc3e6113bb717c62b053e499366debabc42f746e8aa6a96121632d26b5ddd67.exe
    "C:\Users\Admin\AppData\Local\Temp\cfc3e6113bb717c62b053e499366debabc42f746e8aa6a96121632d26b5ddd67.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:5024
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4352
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1768
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2424
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3588
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:5028
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1876
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1656
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1688
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3096
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4584
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:340
          • 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:4576
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4288

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsuD2C8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            691e939467a95777695a0df8ca7abb94

            SHA1

            c686ba59e887a773d906f46f0611ff053d430d0a

            SHA256

            60f9a631a6a1d12841ad6eac718de5602cdfe197a0dee70401effb886c74324b

            SHA512

            0e416319718a1e7c14d7a08ebc711bc6a62c38bfc0395c25e21c2b72d190aa994112c1fc0c09a94b50d7f1b9e6112597b33a51a3f9c59213567ffeaf6f8c3464

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            691e939467a95777695a0df8ca7abb94

            SHA1

            c686ba59e887a773d906f46f0611ff053d430d0a

            SHA256

            60f9a631a6a1d12841ad6eac718de5602cdfe197a0dee70401effb886c74324b

            SHA512

            0e416319718a1e7c14d7a08ebc711bc6a62c38bfc0395c25e21c2b72d190aa994112c1fc0c09a94b50d7f1b9e6112597b33a51a3f9c59213567ffeaf6f8c3464

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            691e939467a95777695a0df8ca7abb94

            SHA1

            c686ba59e887a773d906f46f0611ff053d430d0a

            SHA256

            60f9a631a6a1d12841ad6eac718de5602cdfe197a0dee70401effb886c74324b

            SHA512

            0e416319718a1e7c14d7a08ebc711bc6a62c38bfc0395c25e21c2b72d190aa994112c1fc0c09a94b50d7f1b9e6112597b33a51a3f9c59213567ffeaf6f8c3464

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            691e939467a95777695a0df8ca7abb94

            SHA1

            c686ba59e887a773d906f46f0611ff053d430d0a

            SHA256

            60f9a631a6a1d12841ad6eac718de5602cdfe197a0dee70401effb886c74324b

            SHA512

            0e416319718a1e7c14d7a08ebc711bc6a62c38bfc0395c25e21c2b72d190aa994112c1fc0c09a94b50d7f1b9e6112597b33a51a3f9c59213567ffeaf6f8c3464

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cca4b94b829f812f5ec3a4429231e5ec

            SHA1

            212a6eafc250b2ab214d44a535099dd071dfa0e3

            SHA256

            d8321cff6d1e3fb6527f6f3496488dc8c752cafe61b0de66c54a1dd39f20a384

            SHA512

            f38afe3fc503dbec9bd549168b60a2314f647ddedcc09b91d440ac0664df6fa233ffe58de371e936901ce9c1d6816a62ec4795695c2e2d5c4db5c178db0e9b41

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cca4b94b829f812f5ec3a4429231e5ec

            SHA1

            212a6eafc250b2ab214d44a535099dd071dfa0e3

            SHA256

            d8321cff6d1e3fb6527f6f3496488dc8c752cafe61b0de66c54a1dd39f20a384

            SHA512

            f38afe3fc503dbec9bd549168b60a2314f647ddedcc09b91d440ac0664df6fa233ffe58de371e936901ce9c1d6816a62ec4795695c2e2d5c4db5c178db0e9b41

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cca4b94b829f812f5ec3a4429231e5ec

            SHA1

            212a6eafc250b2ab214d44a535099dd071dfa0e3

            SHA256

            d8321cff6d1e3fb6527f6f3496488dc8c752cafe61b0de66c54a1dd39f20a384

            SHA512

            f38afe3fc503dbec9bd549168b60a2314f647ddedcc09b91d440ac0664df6fa233ffe58de371e936901ce9c1d6816a62ec4795695c2e2d5c4db5c178db0e9b41

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            52b1192640523f09212cd03bd238c1ae

            SHA1

            e8c5c6f78afcd2baad2ea3416a3d2ce1c38f7b55

            SHA256

            3c13bd25b2de475acdc4e8017c8d9a319195e9e5e6d463ac6a9e46767da6bfe6

            SHA512

            40fcfb038b13885ea709469a9d9fc0fc08c7b71f548471551a90ee2e5f83cf62f386a246bf92afec24ffb64dc02c005d29cc45b5ca6101dcb91d9fd7934b53b6

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            52b1192640523f09212cd03bd238c1ae

            SHA1

            e8c5c6f78afcd2baad2ea3416a3d2ce1c38f7b55

            SHA256

            3c13bd25b2de475acdc4e8017c8d9a319195e9e5e6d463ac6a9e46767da6bfe6

            SHA512

            40fcfb038b13885ea709469a9d9fc0fc08c7b71f548471551a90ee2e5f83cf62f386a246bf92afec24ffb64dc02c005d29cc45b5ca6101dcb91d9fd7934b53b6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            27fa718f23f60cdbc47b88a0135776af

            SHA1

            1008c89e7f5f7954b370671e3cd1306efd02ef63

            SHA256

            2fad6d91ffc6236e603e1dbe4834f20c978eae82e2e44b67db561df01238760a

            SHA512

            cfd4a6e0a9e1f3407b1dc9dbbdbedb1727091df23048ba0dc83d720842c7e8f24df8c9c09eef2d8e63eb566691a56cd5f558a6c20755df3dbe24d34f2a6bd61d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            27fa718f23f60cdbc47b88a0135776af

            SHA1

            1008c89e7f5f7954b370671e3cd1306efd02ef63

            SHA256

            2fad6d91ffc6236e603e1dbe4834f20c978eae82e2e44b67db561df01238760a

            SHA512

            cfd4a6e0a9e1f3407b1dc9dbbdbedb1727091df23048ba0dc83d720842c7e8f24df8c9c09eef2d8e63eb566691a56cd5f558a6c20755df3dbe24d34f2a6bd61d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            27fa718f23f60cdbc47b88a0135776af

            SHA1

            1008c89e7f5f7954b370671e3cd1306efd02ef63

            SHA256

            2fad6d91ffc6236e603e1dbe4834f20c978eae82e2e44b67db561df01238760a

            SHA512

            cfd4a6e0a9e1f3407b1dc9dbbdbedb1727091df23048ba0dc83d720842c7e8f24df8c9c09eef2d8e63eb566691a56cd5f558a6c20755df3dbe24d34f2a6bd61d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d8e797e2a92646782f70a2ca6fc60bc

            SHA1

            7718d0bafe205cf4c86383e1b10b610cd763f01f

            SHA256

            f2149bf8ae04cd815bceebcaa5f7e9e132d0bedf2d418a2e34e45b60210452dc

            SHA512

            fa1bc471c5df78921eec4ba1d350d98805cb34995424f44a3ab5db1ef30c9ddf11b6e1095485b693c39acd05c41233c4f8a8d0573448c69d3becfc38c9f822f9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d8e797e2a92646782f70a2ca6fc60bc

            SHA1

            7718d0bafe205cf4c86383e1b10b610cd763f01f

            SHA256

            f2149bf8ae04cd815bceebcaa5f7e9e132d0bedf2d418a2e34e45b60210452dc

            SHA512

            fa1bc471c5df78921eec4ba1d350d98805cb34995424f44a3ab5db1ef30c9ddf11b6e1095485b693c39acd05c41233c4f8a8d0573448c69d3becfc38c9f822f9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            3d8e797e2a92646782f70a2ca6fc60bc

            SHA1

            7718d0bafe205cf4c86383e1b10b610cd763f01f

            SHA256

            f2149bf8ae04cd815bceebcaa5f7e9e132d0bedf2d418a2e34e45b60210452dc

            SHA512

            fa1bc471c5df78921eec4ba1d350d98805cb34995424f44a3ab5db1ef30c9ddf11b6e1095485b693c39acd05c41233c4f8a8d0573448c69d3becfc38c9f822f9

          • memory/340-166-0x0000000000000000-mapping.dmp

          • memory/1656-153-0x0000000000000000-mapping.dmp

          • memory/1688-158-0x0000000000000000-mapping.dmp

          • memory/1768-137-0x0000000000000000-mapping.dmp

          • memory/1876-147-0x0000000000000000-mapping.dmp

          • memory/2424-140-0x0000000000000000-mapping.dmp

          • memory/3096-159-0x0000000000000000-mapping.dmp

          • memory/3588-141-0x0000000000000000-mapping.dmp

          • memory/4352-135-0x0000000000000000-mapping.dmp

          • memory/4584-165-0x0000000000000000-mapping.dmp

          • memory/5024-136-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/5024-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/5028-142-0x0000000000000000-mapping.dmp