Analysis

  • max time kernel
    58s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:32

General

  • Target

    1a74ce0558ce124d1b09686fadf14ea67012c8f5bc9cbdb9ff27875d7e0e6896.exe

  • Size

    601KB

  • MD5

    a91a19a86ee847c23ba550ebefef0076

  • SHA1

    e84a62f2bc36bcd91d158f95325578923b60d4b3

  • SHA256

    1a74ce0558ce124d1b09686fadf14ea67012c8f5bc9cbdb9ff27875d7e0e6896

  • SHA512

    cf928ae6f07e97ba34b1e80aaea13b8b75feb26eaba07b070fb91f2062ed26193e0bf8f7337c3f069235fbcbf7064198df381fffbfeda12b1a8c1da4b291a8be

  • SSDEEP

    12288:sIny5DYTD9rG7aW21DFyLPFmYV30xgvxniJ:qUTD9rc8FyLJzvhO

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\1a74ce0558ce124d1b09686fadf14ea67012c8f5bc9cbdb9ff27875d7e0e6896.exe
    "C:\Users\Admin\AppData\Local\Temp\1a74ce0558ce124d1b09686fadf14ea67012c8f5bc9cbdb9ff27875d7e0e6896.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:1044
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:996
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1368
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1860
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:684
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1104
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1932
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:864
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1644
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1408
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1284
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1752
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1736
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:944

          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

            256518dfd19cc82b4d33883a177053d6

            SHA1

            696e9a6c3cbcc325ed716ce6fbeb77080d91c5a6

            SHA256

            2bcc39c036046d135684e8514b19205b665318953d9b2a9ca259bc23acbc2cc4

            SHA512

            271507852e38164c8727110b26fb147369ff6be68a889eb98c5d159d08f3dc0a0edf6fa961c7b45988608aee5536ca572c49ff8c95089585b2e34e3490c9539e

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

            241KB

            MD5

            a7a84c97a71208e73c84ccc7897ebc9f

            SHA1

            7646f54c52468faff0033c04fe1d660ec493e498

            SHA256

            8d395597384cd6a7ebf78bbef1c13449cfb52948d9b4735f75f189be6bf87203

            SHA512

            585a9a94959c52665af289bff8867c91117d64ab4eb0cc53d2496d71e9e0d1199ced9fe644dd487928e0291f7e556f5f93dcb9494239359837fd7645abdd879c

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

            108KB

            MD5

            8aa0604dd093704212b97d73e8a3a65d

            SHA1

            4a7dc26a2ded4fc5e9e8ec8625a26fbd512dd8f0

            SHA256

            8fe993e8029f78094901921d8c2e7117a8c9f136e3072d1e1946253b873b0954

            SHA512

            0c4bc89702acd706096c104a112fda783d7dac6049de18cb94eb12febca615b3d593834b12c19cf1aab553664aff9503016ff2010e75c1b72f9a79dd7c3dfe3e

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

            176KB

            MD5

            e93702ee21a9ba1e8c6b94134dee7f5f

            SHA1

            ad0cb43291745a0523e6e3fe6c5792ae0c4f9f60

            SHA256

            ae2fd9d9f8f4bb646ffe3000c527c1cb0245147cd724e41ff4aa91970d7220c3

            SHA512

            c8263cf6582063e50ee9c587003d3bb4b9b1f241b4f6122a87ef522b10d6b7852f0afb249e84e462c8fccc185af0b663b862c799a982584b9609f2221da8e2b2

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

            176KB

            MD5

            e93702ee21a9ba1e8c6b94134dee7f5f

            SHA1

            ad0cb43291745a0523e6e3fe6c5792ae0c4f9f60

            SHA256

            ae2fd9d9f8f4bb646ffe3000c527c1cb0245147cd724e41ff4aa91970d7220c3

            SHA512

            c8263cf6582063e50ee9c587003d3bb4b9b1f241b4f6122a87ef522b10d6b7852f0afb249e84e462c8fccc185af0b663b862c799a982584b9609f2221da8e2b2

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

            158KB

            MD5

            5c932fe0b7c58cdc56ed8f032ed2fa84

            SHA1

            cb9a0d77750d582817ee0303f268828f7ee0353d

            SHA256

            872e29d18ae5fa1fa858c2a4189902dbd70b089d1161a8813090cba43cb92437

            SHA512

            561081ff893af55a24a3fdcf9fc730dc58a04d9c9432b3aa3e9d1d39b9f6ecc6e507d74792faba6217e762a2993c23f3747f790d1e5b721837a40d069ff1f81e

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

            158KB

            MD5

            5c932fe0b7c58cdc56ed8f032ed2fa84

            SHA1

            cb9a0d77750d582817ee0303f268828f7ee0353d

            SHA256

            872e29d18ae5fa1fa858c2a4189902dbd70b089d1161a8813090cba43cb92437

            SHA512

            561081ff893af55a24a3fdcf9fc730dc58a04d9c9432b3aa3e9d1d39b9f6ecc6e507d74792faba6217e762a2993c23f3747f790d1e5b721837a40d069ff1f81e

          • \Users\Admin\AppData\Local\Temp\nso9688.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso9688.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso9688.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso9688.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso9688.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            256518dfd19cc82b4d33883a177053d6

            SHA1

            696e9a6c3cbcc325ed716ce6fbeb77080d91c5a6

            SHA256

            2bcc39c036046d135684e8514b19205b665318953d9b2a9ca259bc23acbc2cc4

            SHA512

            271507852e38164c8727110b26fb147369ff6be68a889eb98c5d159d08f3dc0a0edf6fa961c7b45988608aee5536ca572c49ff8c95089585b2e34e3490c9539e

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            256518dfd19cc82b4d33883a177053d6

            SHA1

            696e9a6c3cbcc325ed716ce6fbeb77080d91c5a6

            SHA256

            2bcc39c036046d135684e8514b19205b665318953d9b2a9ca259bc23acbc2cc4

            SHA512

            271507852e38164c8727110b26fb147369ff6be68a889eb98c5d159d08f3dc0a0edf6fa961c7b45988608aee5536ca572c49ff8c95089585b2e34e3490c9539e

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            256518dfd19cc82b4d33883a177053d6

            SHA1

            696e9a6c3cbcc325ed716ce6fbeb77080d91c5a6

            SHA256

            2bcc39c036046d135684e8514b19205b665318953d9b2a9ca259bc23acbc2cc4

            SHA512

            271507852e38164c8727110b26fb147369ff6be68a889eb98c5d159d08f3dc0a0edf6fa961c7b45988608aee5536ca572c49ff8c95089585b2e34e3490c9539e

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            a7a84c97a71208e73c84ccc7897ebc9f

            SHA1

            7646f54c52468faff0033c04fe1d660ec493e498

            SHA256

            8d395597384cd6a7ebf78bbef1c13449cfb52948d9b4735f75f189be6bf87203

            SHA512

            585a9a94959c52665af289bff8867c91117d64ab4eb0cc53d2496d71e9e0d1199ced9fe644dd487928e0291f7e556f5f93dcb9494239359837fd7645abdd879c

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            a7a84c97a71208e73c84ccc7897ebc9f

            SHA1

            7646f54c52468faff0033c04fe1d660ec493e498

            SHA256

            8d395597384cd6a7ebf78bbef1c13449cfb52948d9b4735f75f189be6bf87203

            SHA512

            585a9a94959c52665af289bff8867c91117d64ab4eb0cc53d2496d71e9e0d1199ced9fe644dd487928e0291f7e556f5f93dcb9494239359837fd7645abdd879c

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            8aa0604dd093704212b97d73e8a3a65d

            SHA1

            4a7dc26a2ded4fc5e9e8ec8625a26fbd512dd8f0

            SHA256

            8fe993e8029f78094901921d8c2e7117a8c9f136e3072d1e1946253b873b0954

            SHA512

            0c4bc89702acd706096c104a112fda783d7dac6049de18cb94eb12febca615b3d593834b12c19cf1aab553664aff9503016ff2010e75c1b72f9a79dd7c3dfe3e

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            e93702ee21a9ba1e8c6b94134dee7f5f

            SHA1

            ad0cb43291745a0523e6e3fe6c5792ae0c4f9f60

            SHA256

            ae2fd9d9f8f4bb646ffe3000c527c1cb0245147cd724e41ff4aa91970d7220c3

            SHA512

            c8263cf6582063e50ee9c587003d3bb4b9b1f241b4f6122a87ef522b10d6b7852f0afb249e84e462c8fccc185af0b663b862c799a982584b9609f2221da8e2b2

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            5c932fe0b7c58cdc56ed8f032ed2fa84

            SHA1

            cb9a0d77750d582817ee0303f268828f7ee0353d

            SHA256

            872e29d18ae5fa1fa858c2a4189902dbd70b089d1161a8813090cba43cb92437

            SHA512

            561081ff893af55a24a3fdcf9fc730dc58a04d9c9432b3aa3e9d1d39b9f6ecc6e507d74792faba6217e762a2993c23f3747f790d1e5b721837a40d069ff1f81e

          • memory/684-62-0x0000000000000000-mapping.dmp
          • memory/864-77-0x0000000000000000-mapping.dmp
          • memory/996-58-0x0000000000000000-mapping.dmp
          • memory/1044-54-0x0000000075B11000-0x0000000075B13000-memory.dmp
            Filesize

            8KB

          • memory/1044-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1044-56-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1044-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1104-64-0x0000000000000000-mapping.dmp
          • memory/1284-87-0x0000000000000000-mapping.dmp
          • memory/1368-59-0x0000000000000000-mapping.dmp
          • memory/1408-82-0x0000000000000000-mapping.dmp
          • memory/1644-81-0x0000000000000000-mapping.dmp
          • memory/1752-88-0x0000000000000000-mapping.dmp
          • memory/1860-61-0x0000000000000000-mapping.dmp
          • memory/1932-71-0x0000000000000000-mapping.dmp