Analysis

  • max time kernel
    40s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:27

General

  • Target

    42d426fbac6a47982521b5e9112d707d71160b68223c24789c2799ae6ab8ab7d.exe

  • Size

    603KB

  • MD5

    ae3c517e6aa84c76fe323fb82c44c482

  • SHA1

    243d53bae7a4af907ff127405f7f5e283e39978e

  • SHA256

    42d426fbac6a47982521b5e9112d707d71160b68223c24789c2799ae6ab8ab7d

  • SHA512

    7de329f388e6f931c4fa22f381e6943f822774d8cd2882a13d6a701e977be703b8fed07f3ffaad2ec1309250abbe67c6983e363fa9d0eb0ff57a83ef15e5ec66

  • SSDEEP

    12288:3Iny5DYTmIfvi51c+Vo34uWboCKD6uepPaft1yVNiyGD:fUTmoDT34p46uepPYyVGD

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\42d426fbac6a47982521b5e9112d707d71160b68223c24789c2799ae6ab8ab7d.exe
    "C:\Users\Admin\AppData\Local\Temp\42d426fbac6a47982521b5e9112d707d71160b68223c24789c2799ae6ab8ab7d.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:456
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1620
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1716
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1340
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1492
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:968
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:340
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1796
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2036
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1512
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1864
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1784
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:300
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1704

          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

            c5d703ffd4bbaf210fbbc6884543ae31

            SHA1

            64db840ceac48cc76d2a3fd8a0707b4496c2e837

            SHA256

            2c7d1d038734a9b27ac09fa3197453e84cbfb9cd6375ef25b82a29182022c8ba

            SHA512

            89db514a031c20ee49141ca01a1962ffdfd87e83f4ae0ef3da7d2617d9365165b26ff274e7d9a1a3748803d9d0257448fe46ad2d5b6b35c99ca4c886a10afd0a

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

            244KB

            MD5

            536a24f8d2bd432df4a08e1407de0c25

            SHA1

            fca7f08b11566e9dc59db642aa0dd7bbfdc86173

            SHA256

            e601ef9da0ef4b56352ff545228fa7bfb50f7cb7ad5c4c1fb3dc0259870f7170

            SHA512

            c1b3032816ac937e447ccf204e46a0f42dac8f93f1204901c237b3e0a42cde65534849eb6cd5897b84c329513ceeb366bd814eb774d4539fcefb9bbb239762c6

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

            108KB

            MD5

            3413ca80015edbf19b8e135d66dbbcdd

            SHA1

            d8ec88873777d881e8a509da5c3d93a9b509f209

            SHA256

            183e153577dc151b03c1c369764826b6b0d9e3fa5294fd4bb81055a78734c880

            SHA512

            4f0225ab6c5a659b6bbea2e7d7502d864641e9db9f4da9af8b31caf8509fb2514b473e1f40ddb280125ac843c4caedc2ed9562f5c96ba8f2130881c91b394305

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

            176KB

            MD5

            0398e6a12fcd0459130ede4aab5876f5

            SHA1

            3ef556a113d10e8a46e934a44ed2886f088dbc55

            SHA256

            1f10d2604072e48d2edb4e673e990a9c2d6eecaa1f08a89047e44f2ea3d5d091

            SHA512

            a715568adb4bad84aa3cf32a9272a4fc43c34418e00f58161a65492f686f9cceb7d924a0ae60f39743ee0a05048590f4f0dbabccb535e3dbea8c41affd5541f8

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

            176KB

            MD5

            0398e6a12fcd0459130ede4aab5876f5

            SHA1

            3ef556a113d10e8a46e934a44ed2886f088dbc55

            SHA256

            1f10d2604072e48d2edb4e673e990a9c2d6eecaa1f08a89047e44f2ea3d5d091

            SHA512

            a715568adb4bad84aa3cf32a9272a4fc43c34418e00f58161a65492f686f9cceb7d924a0ae60f39743ee0a05048590f4f0dbabccb535e3dbea8c41affd5541f8

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

            158KB

            MD5

            7625d499d4278c3657dbfc21d497f3ee

            SHA1

            e4aa9040ea046e68962f50c0a4b41c014e7207d0

            SHA256

            965a1c1b591b38da41fd8da53ee93ccc2614c8135ef6acaf6bb5365b6f8242d5

            SHA512

            57158d642019ffff1b2b4d24111dcbcf4735c01cd364b387f4462dff11a829049d18c73ebacb2e14c217232225d08a81ebf6a11723fad338d9e369536a31bc44

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

            158KB

            MD5

            7625d499d4278c3657dbfc21d497f3ee

            SHA1

            e4aa9040ea046e68962f50c0a4b41c014e7207d0

            SHA256

            965a1c1b591b38da41fd8da53ee93ccc2614c8135ef6acaf6bb5365b6f8242d5

            SHA512

            57158d642019ffff1b2b4d24111dcbcf4735c01cd364b387f4462dff11a829049d18c73ebacb2e14c217232225d08a81ebf6a11723fad338d9e369536a31bc44

          • \Users\Admin\AppData\Local\Temp\nsdF03B.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsdF03B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdF03B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdF03B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdF03B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c5d703ffd4bbaf210fbbc6884543ae31

            SHA1

            64db840ceac48cc76d2a3fd8a0707b4496c2e837

            SHA256

            2c7d1d038734a9b27ac09fa3197453e84cbfb9cd6375ef25b82a29182022c8ba

            SHA512

            89db514a031c20ee49141ca01a1962ffdfd87e83f4ae0ef3da7d2617d9365165b26ff274e7d9a1a3748803d9d0257448fe46ad2d5b6b35c99ca4c886a10afd0a

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c5d703ffd4bbaf210fbbc6884543ae31

            SHA1

            64db840ceac48cc76d2a3fd8a0707b4496c2e837

            SHA256

            2c7d1d038734a9b27ac09fa3197453e84cbfb9cd6375ef25b82a29182022c8ba

            SHA512

            89db514a031c20ee49141ca01a1962ffdfd87e83f4ae0ef3da7d2617d9365165b26ff274e7d9a1a3748803d9d0257448fe46ad2d5b6b35c99ca4c886a10afd0a

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c5d703ffd4bbaf210fbbc6884543ae31

            SHA1

            64db840ceac48cc76d2a3fd8a0707b4496c2e837

            SHA256

            2c7d1d038734a9b27ac09fa3197453e84cbfb9cd6375ef25b82a29182022c8ba

            SHA512

            89db514a031c20ee49141ca01a1962ffdfd87e83f4ae0ef3da7d2617d9365165b26ff274e7d9a1a3748803d9d0257448fe46ad2d5b6b35c99ca4c886a10afd0a

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            536a24f8d2bd432df4a08e1407de0c25

            SHA1

            fca7f08b11566e9dc59db642aa0dd7bbfdc86173

            SHA256

            e601ef9da0ef4b56352ff545228fa7bfb50f7cb7ad5c4c1fb3dc0259870f7170

            SHA512

            c1b3032816ac937e447ccf204e46a0f42dac8f93f1204901c237b3e0a42cde65534849eb6cd5897b84c329513ceeb366bd814eb774d4539fcefb9bbb239762c6

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            536a24f8d2bd432df4a08e1407de0c25

            SHA1

            fca7f08b11566e9dc59db642aa0dd7bbfdc86173

            SHA256

            e601ef9da0ef4b56352ff545228fa7bfb50f7cb7ad5c4c1fb3dc0259870f7170

            SHA512

            c1b3032816ac937e447ccf204e46a0f42dac8f93f1204901c237b3e0a42cde65534849eb6cd5897b84c329513ceeb366bd814eb774d4539fcefb9bbb239762c6

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            3413ca80015edbf19b8e135d66dbbcdd

            SHA1

            d8ec88873777d881e8a509da5c3d93a9b509f209

            SHA256

            183e153577dc151b03c1c369764826b6b0d9e3fa5294fd4bb81055a78734c880

            SHA512

            4f0225ab6c5a659b6bbea2e7d7502d864641e9db9f4da9af8b31caf8509fb2514b473e1f40ddb280125ac843c4caedc2ed9562f5c96ba8f2130881c91b394305

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            0398e6a12fcd0459130ede4aab5876f5

            SHA1

            3ef556a113d10e8a46e934a44ed2886f088dbc55

            SHA256

            1f10d2604072e48d2edb4e673e990a9c2d6eecaa1f08a89047e44f2ea3d5d091

            SHA512

            a715568adb4bad84aa3cf32a9272a4fc43c34418e00f58161a65492f686f9cceb7d924a0ae60f39743ee0a05048590f4f0dbabccb535e3dbea8c41affd5541f8

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            7625d499d4278c3657dbfc21d497f3ee

            SHA1

            e4aa9040ea046e68962f50c0a4b41c014e7207d0

            SHA256

            965a1c1b591b38da41fd8da53ee93ccc2614c8135ef6acaf6bb5365b6f8242d5

            SHA512

            57158d642019ffff1b2b4d24111dcbcf4735c01cd364b387f4462dff11a829049d18c73ebacb2e14c217232225d08a81ebf6a11723fad338d9e369536a31bc44

          • memory/340-71-0x0000000000000000-mapping.dmp
          • memory/456-54-0x0000000074F01000-0x0000000074F03000-memory.dmp
            Filesize

            8KB

          • memory/456-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/456-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/456-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/968-64-0x0000000000000000-mapping.dmp
          • memory/1340-61-0x0000000000000000-mapping.dmp
          • memory/1492-62-0x0000000000000000-mapping.dmp
          • memory/1512-82-0x0000000000000000-mapping.dmp
          • memory/1620-57-0x0000000000000000-mapping.dmp
          • memory/1716-58-0x0000000000000000-mapping.dmp
          • memory/1784-88-0x0000000000000000-mapping.dmp
          • memory/1796-77-0x0000000000000000-mapping.dmp
          • memory/1864-87-0x0000000000000000-mapping.dmp
          • memory/2036-81-0x0000000000000000-mapping.dmp