Analysis

  • max time kernel
    70s
  • max time network
    133s
  • 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 10:17

General

  • Target

    a127dcf76a5bda74fad14bffa1fce147e4944a33b637d275d98ff0266068a0ee.exe

  • Size

    602KB

  • MD5

    895cbe7a49e0a57a6ae9a9fbb0ee9c9d

  • SHA1

    e53cf4b890b09e3a0a2729ebb6f9574cb1c4ead7

  • SHA256

    a127dcf76a5bda74fad14bffa1fce147e4944a33b637d275d98ff0266068a0ee

  • SHA512

    4ac9ef6609205f51e0620d6d0159c51d405e7e11d04038eacde282bf0ef9f1e43643198a24fd5470caccce0d51a37502bb46db60732ec18f26f2730dc9d6553c

  • SSDEEP

    12288:aIny5DYTu/sZpgTeO+9eVTIApJn7U35etLvMFIZkQaDkvu2d2kvO1VRfoh:8UTuQCqCIAC5eFvMSkQQkvu2Yk21VRQh

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\a127dcf76a5bda74fad14bffa1fce147e4944a33b637d275d98ff0266068a0ee.exe
    "C:\Users\Admin\AppData\Local\Temp\a127dcf76a5bda74fad14bffa1fce147e4944a33b637d275d98ff0266068a0ee.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:2448
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4824
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1628
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1456
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1244
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4776
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3724
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3852
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4852
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2416
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3988
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:928
          • 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:1276
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4784

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn179.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8de1e278e2f8d2eada0d3417eee86376

            SHA1

            ef482be95cc8940914b60b9312ebcf81cef81ab1

            SHA256

            f2266a2d70d29faf099f0e7cda8847e9071c11d9d24065c58d51822aac1cbeba

            SHA512

            7181606e42c0f54f33d440e47e489a7321b96923260a2113063439e3deae7fc03ff1d5b00701a32f8c9b5d34bfd54dac263095ec0555d168ecc53c90d50f0e7a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8de1e278e2f8d2eada0d3417eee86376

            SHA1

            ef482be95cc8940914b60b9312ebcf81cef81ab1

            SHA256

            f2266a2d70d29faf099f0e7cda8847e9071c11d9d24065c58d51822aac1cbeba

            SHA512

            7181606e42c0f54f33d440e47e489a7321b96923260a2113063439e3deae7fc03ff1d5b00701a32f8c9b5d34bfd54dac263095ec0555d168ecc53c90d50f0e7a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8de1e278e2f8d2eada0d3417eee86376

            SHA1

            ef482be95cc8940914b60b9312ebcf81cef81ab1

            SHA256

            f2266a2d70d29faf099f0e7cda8847e9071c11d9d24065c58d51822aac1cbeba

            SHA512

            7181606e42c0f54f33d440e47e489a7321b96923260a2113063439e3deae7fc03ff1d5b00701a32f8c9b5d34bfd54dac263095ec0555d168ecc53c90d50f0e7a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8de1e278e2f8d2eada0d3417eee86376

            SHA1

            ef482be95cc8940914b60b9312ebcf81cef81ab1

            SHA256

            f2266a2d70d29faf099f0e7cda8847e9071c11d9d24065c58d51822aac1cbeba

            SHA512

            7181606e42c0f54f33d440e47e489a7321b96923260a2113063439e3deae7fc03ff1d5b00701a32f8c9b5d34bfd54dac263095ec0555d168ecc53c90d50f0e7a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4979619cdf99cda0eb4630ef19b9bfea

            SHA1

            9fedf742222ec808eada558c98622b11f0009fc9

            SHA256

            a1f925b808ee67d122dee9e70712e97ed2d453f67e02d968598bd41021ecf582

            SHA512

            b70279bf0c2c7dabd33ba14ae1ee6ee49b6d4144cc29a3018a582639e9993d48d6788c13dfd88791592f5a555d03191c866c24b6eaac00b01601b78d0748a56b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4979619cdf99cda0eb4630ef19b9bfea

            SHA1

            9fedf742222ec808eada558c98622b11f0009fc9

            SHA256

            a1f925b808ee67d122dee9e70712e97ed2d453f67e02d968598bd41021ecf582

            SHA512

            b70279bf0c2c7dabd33ba14ae1ee6ee49b6d4144cc29a3018a582639e9993d48d6788c13dfd88791592f5a555d03191c866c24b6eaac00b01601b78d0748a56b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4979619cdf99cda0eb4630ef19b9bfea

            SHA1

            9fedf742222ec808eada558c98622b11f0009fc9

            SHA256

            a1f925b808ee67d122dee9e70712e97ed2d453f67e02d968598bd41021ecf582

            SHA512

            b70279bf0c2c7dabd33ba14ae1ee6ee49b6d4144cc29a3018a582639e9993d48d6788c13dfd88791592f5a555d03191c866c24b6eaac00b01601b78d0748a56b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            64577e1430017208afbc829bed8ab3d9

            SHA1

            7f6d176bc87f57c3c734464b084ca656d087f3c4

            SHA256

            6d33ad8a3e5eccc4791bf589700401577f9a612d010f355f9559ded94dddb10d

            SHA512

            74b97f507714efb426f04bf037cf82510ea0957675130438878ffd71f22c308e112e91de394b023541ea57d492f038c371e00edd21e52bd59d7a1755d4bf9039

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            64577e1430017208afbc829bed8ab3d9

            SHA1

            7f6d176bc87f57c3c734464b084ca656d087f3c4

            SHA256

            6d33ad8a3e5eccc4791bf589700401577f9a612d010f355f9559ded94dddb10d

            SHA512

            74b97f507714efb426f04bf037cf82510ea0957675130438878ffd71f22c308e112e91de394b023541ea57d492f038c371e00edd21e52bd59d7a1755d4bf9039

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fb7aa9499fe5a0946e86ac3d95035d6f

            SHA1

            49e7b9390afb9b34c83667caf6155b708e79912c

            SHA256

            4df2e81f3435eddb8eab88d9b2170aa5fc5d5622619ca5a1ea82b1d8720d9af2

            SHA512

            7c6925c0b7ce0b8de73a3442b8ef8969282d2f3811eb94c87b0978e0d0d8b8adb1eb6ca1630df9d51d100b0af1a026f9b7522b3da4029d8df6a3fe4b513a6fd3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fb7aa9499fe5a0946e86ac3d95035d6f

            SHA1

            49e7b9390afb9b34c83667caf6155b708e79912c

            SHA256

            4df2e81f3435eddb8eab88d9b2170aa5fc5d5622619ca5a1ea82b1d8720d9af2

            SHA512

            7c6925c0b7ce0b8de73a3442b8ef8969282d2f3811eb94c87b0978e0d0d8b8adb1eb6ca1630df9d51d100b0af1a026f9b7522b3da4029d8df6a3fe4b513a6fd3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fb7aa9499fe5a0946e86ac3d95035d6f

            SHA1

            49e7b9390afb9b34c83667caf6155b708e79912c

            SHA256

            4df2e81f3435eddb8eab88d9b2170aa5fc5d5622619ca5a1ea82b1d8720d9af2

            SHA512

            7c6925c0b7ce0b8de73a3442b8ef8969282d2f3811eb94c87b0978e0d0d8b8adb1eb6ca1630df9d51d100b0af1a026f9b7522b3da4029d8df6a3fe4b513a6fd3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            fc304b0c06f08b8739b71b392a2b9219

            SHA1

            e34ca9fe7762e3b4314debdd11ef74b48bd3a28b

            SHA256

            276bb276187c435220776ee1a2f490204becec68faf8285fd13c3d1dc2a4fb90

            SHA512

            2324c524c7b8ec3c2ba80a9e2fe72c79cf571c542bf5eccf438a4ab9dc4ceb8e9979bf9ac3566bc2148685cbb1b2f1285b775f6e9b0dcf72afde79cf5a5a8ea7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            fc304b0c06f08b8739b71b392a2b9219

            SHA1

            e34ca9fe7762e3b4314debdd11ef74b48bd3a28b

            SHA256

            276bb276187c435220776ee1a2f490204becec68faf8285fd13c3d1dc2a4fb90

            SHA512

            2324c524c7b8ec3c2ba80a9e2fe72c79cf571c542bf5eccf438a4ab9dc4ceb8e9979bf9ac3566bc2148685cbb1b2f1285b775f6e9b0dcf72afde79cf5a5a8ea7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            fc304b0c06f08b8739b71b392a2b9219

            SHA1

            e34ca9fe7762e3b4314debdd11ef74b48bd3a28b

            SHA256

            276bb276187c435220776ee1a2f490204becec68faf8285fd13c3d1dc2a4fb90

            SHA512

            2324c524c7b8ec3c2ba80a9e2fe72c79cf571c542bf5eccf438a4ab9dc4ceb8e9979bf9ac3566bc2148685cbb1b2f1285b775f6e9b0dcf72afde79cf5a5a8ea7

          • memory/928-166-0x0000000000000000-mapping.dmp

          • memory/1244-141-0x0000000000000000-mapping.dmp

          • memory/1456-140-0x0000000000000000-mapping.dmp

          • memory/1628-137-0x0000000000000000-mapping.dmp

          • memory/2416-159-0x0000000000000000-mapping.dmp

          • memory/2448-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2448-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2448-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3724-147-0x0000000000000000-mapping.dmp

          • memory/3852-153-0x0000000000000000-mapping.dmp

          • memory/3988-165-0x0000000000000000-mapping.dmp

          • memory/4776-142-0x0000000000000000-mapping.dmp

          • memory/4824-136-0x0000000000000000-mapping.dmp

          • memory/4852-158-0x0000000000000000-mapping.dmp