Analysis

  • max time kernel
    58s
  • max time network
    35s
  • 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

    191d5d7bf5e90e60248e2a9f72bd6b7f7ab018b85bb616f9d072335aff7e65ce.exe

  • Size

    601KB

  • MD5

    d72c341d6a611e8e545fc07850f69ac5

  • SHA1

    d142a4a8ed86f708941616f7d93e63733a3aef8c

  • SHA256

    191d5d7bf5e90e60248e2a9f72bd6b7f7ab018b85bb616f9d072335aff7e65ce

  • SHA512

    cd3cf8677093ac9baf778dcda037fccba2c79831b2dd01c63e8d8aad7b000f4a2587959bd24fd4e8add6050d1222ad3d66753f15ca9a9187e9dc24b837849bc4

  • SSDEEP

    12288:ZIny5DYTPIor4g/XW3VOxtayB3SM0pJCOp+4mW+zIbqo9v:VUTPXr4w1xMU3SMvOp+K+zLw

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\191d5d7bf5e90e60248e2a9f72bd6b7f7ab018b85bb616f9d072335aff7e65ce.exe
    "C:\Users\Admin\AppData\Local\Temp\191d5d7bf5e90e60248e2a9f72bd6b7f7ab018b85bb616f9d072335aff7e65ce.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:1888
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:792
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:684
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:924
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:520
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1496
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1052
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1952
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1808
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1984
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1504
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1216
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1204
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1164

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            63f9277a3dd19626984e617a3a0f9eb7

            SHA1

            cd625dadf4cba051bb9d0ae1a2dc9c9772b0d0b9

            SHA256

            8877a0032ec5b3d8dd856dcb4d67a020c5f7b2c10278fe22d6ea6222848b3208

            SHA512

            7502f352fbf27c2cd142c3bf2ef49f9f95c414c8ad4aca271826c2d7304625250db3dd65130511efac066c735ea1f4ef8b882f6375530df0c29e7b71562a4f87

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3a63f7d28dd4c98a9992521ada94664b

            SHA1

            70af4437d2fe27e9ab648edacfaa1aaa05988844

            SHA256

            e3d5b087ea67ce53b72db16b2e862142de34dabd9de07dc772e731fe25501702

            SHA512

            b1e2dcc8664fc2387e1d72954366eed0ff15b6d2b869f45a89f1629b53f09fbcf8eaa8da0f55b0a6f6543cb2248bc2c296ac55521958a8d708ad93fd478fff7d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            74decf690a38a0a6b261f5890b7ba604

            SHA1

            a292cf60ba648b0e521055191d90ba6b23d56a7b

            SHA256

            923d7d44f40c95cc8bf98e81a9a4777577ba6620d505eb742c55bff771fd19b7

            SHA512

            81e0093aad5b387840a912b46683e8c6d7de4c8030a2642621eac8d5080ebc5d185e58a285437c59c0ae9c648cea8b758c9e819d80667e29c9f1a17b9f3c6835

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            96c5240b89c925de1b8333a08f0d3785

            SHA1

            1f5defb37423c0765968f3efa0ffb558a0d6d689

            SHA256

            5c354585116128af02d1d032ba33281f47ebea3cc9c50343e3c999e80aa11df8

            SHA512

            926938779071af3874957a037399fceb99d590274b9bf67c980d7ccaa4176095c89d7cbc9ee4daca72204388344e532ed9b6c2bdb1af428cb79212410f5a2ddb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            96c5240b89c925de1b8333a08f0d3785

            SHA1

            1f5defb37423c0765968f3efa0ffb558a0d6d689

            SHA256

            5c354585116128af02d1d032ba33281f47ebea3cc9c50343e3c999e80aa11df8

            SHA512

            926938779071af3874957a037399fceb99d590274b9bf67c980d7ccaa4176095c89d7cbc9ee4daca72204388344e532ed9b6c2bdb1af428cb79212410f5a2ddb

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d03fa61505c01ae2552cc3fc312df58

            SHA1

            f6491df7166182c673102c35e09c80b1de56e77b

            SHA256

            0b587ec57c192571d6ce8517afa2d1dcdfd42ab8da3b6c26e8abf14b176162c8

            SHA512

            4d357339e6c5c31d72cfa1a351f1b23cd41ec97820ea4fee4f4e9930e8c9c71b29190479e395388f53e8b14a78bfc27bab3f1244665d1dc3fd1f3b2f8272d162

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d03fa61505c01ae2552cc3fc312df58

            SHA1

            f6491df7166182c673102c35e09c80b1de56e77b

            SHA256

            0b587ec57c192571d6ce8517afa2d1dcdfd42ab8da3b6c26e8abf14b176162c8

            SHA512

            4d357339e6c5c31d72cfa1a351f1b23cd41ec97820ea4fee4f4e9930e8c9c71b29190479e395388f53e8b14a78bfc27bab3f1244665d1dc3fd1f3b2f8272d162

          • \Users\Admin\AppData\Local\Temp\nsjAD91.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjAD91.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjAD91.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjAD91.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjAD91.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            63f9277a3dd19626984e617a3a0f9eb7

            SHA1

            cd625dadf4cba051bb9d0ae1a2dc9c9772b0d0b9

            SHA256

            8877a0032ec5b3d8dd856dcb4d67a020c5f7b2c10278fe22d6ea6222848b3208

            SHA512

            7502f352fbf27c2cd142c3bf2ef49f9f95c414c8ad4aca271826c2d7304625250db3dd65130511efac066c735ea1f4ef8b882f6375530df0c29e7b71562a4f87

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            63f9277a3dd19626984e617a3a0f9eb7

            SHA1

            cd625dadf4cba051bb9d0ae1a2dc9c9772b0d0b9

            SHA256

            8877a0032ec5b3d8dd856dcb4d67a020c5f7b2c10278fe22d6ea6222848b3208

            SHA512

            7502f352fbf27c2cd142c3bf2ef49f9f95c414c8ad4aca271826c2d7304625250db3dd65130511efac066c735ea1f4ef8b882f6375530df0c29e7b71562a4f87

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            63f9277a3dd19626984e617a3a0f9eb7

            SHA1

            cd625dadf4cba051bb9d0ae1a2dc9c9772b0d0b9

            SHA256

            8877a0032ec5b3d8dd856dcb4d67a020c5f7b2c10278fe22d6ea6222848b3208

            SHA512

            7502f352fbf27c2cd142c3bf2ef49f9f95c414c8ad4aca271826c2d7304625250db3dd65130511efac066c735ea1f4ef8b882f6375530df0c29e7b71562a4f87

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3a63f7d28dd4c98a9992521ada94664b

            SHA1

            70af4437d2fe27e9ab648edacfaa1aaa05988844

            SHA256

            e3d5b087ea67ce53b72db16b2e862142de34dabd9de07dc772e731fe25501702

            SHA512

            b1e2dcc8664fc2387e1d72954366eed0ff15b6d2b869f45a89f1629b53f09fbcf8eaa8da0f55b0a6f6543cb2248bc2c296ac55521958a8d708ad93fd478fff7d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3a63f7d28dd4c98a9992521ada94664b

            SHA1

            70af4437d2fe27e9ab648edacfaa1aaa05988844

            SHA256

            e3d5b087ea67ce53b72db16b2e862142de34dabd9de07dc772e731fe25501702

            SHA512

            b1e2dcc8664fc2387e1d72954366eed0ff15b6d2b869f45a89f1629b53f09fbcf8eaa8da0f55b0a6f6543cb2248bc2c296ac55521958a8d708ad93fd478fff7d

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            74decf690a38a0a6b261f5890b7ba604

            SHA1

            a292cf60ba648b0e521055191d90ba6b23d56a7b

            SHA256

            923d7d44f40c95cc8bf98e81a9a4777577ba6620d505eb742c55bff771fd19b7

            SHA512

            81e0093aad5b387840a912b46683e8c6d7de4c8030a2642621eac8d5080ebc5d185e58a285437c59c0ae9c648cea8b758c9e819d80667e29c9f1a17b9f3c6835

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            96c5240b89c925de1b8333a08f0d3785

            SHA1

            1f5defb37423c0765968f3efa0ffb558a0d6d689

            SHA256

            5c354585116128af02d1d032ba33281f47ebea3cc9c50343e3c999e80aa11df8

            SHA512

            926938779071af3874957a037399fceb99d590274b9bf67c980d7ccaa4176095c89d7cbc9ee4daca72204388344e532ed9b6c2bdb1af428cb79212410f5a2ddb

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2d03fa61505c01ae2552cc3fc312df58

            SHA1

            f6491df7166182c673102c35e09c80b1de56e77b

            SHA256

            0b587ec57c192571d6ce8517afa2d1dcdfd42ab8da3b6c26e8abf14b176162c8

            SHA512

            4d357339e6c5c31d72cfa1a351f1b23cd41ec97820ea4fee4f4e9930e8c9c71b29190479e395388f53e8b14a78bfc27bab3f1244665d1dc3fd1f3b2f8272d162

          • memory/520-62-0x0000000000000000-mapping.dmp

          • memory/684-59-0x0000000000000000-mapping.dmp

          • memory/792-58-0x0000000000000000-mapping.dmp

          • memory/924-61-0x0000000000000000-mapping.dmp

          • memory/1052-70-0x0000000000000000-mapping.dmp

          • memory/1216-88-0x0000000000000000-mapping.dmp

          • memory/1496-64-0x0000000000000000-mapping.dmp

          • memory/1504-87-0x0000000000000000-mapping.dmp

          • memory/1808-81-0x0000000000000000-mapping.dmp

          • memory/1888-54-0x00000000757E1000-0x00000000757E3000-memory.dmp

            Filesize

            8KB

          • memory/1888-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1888-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1888-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1952-77-0x0000000000000000-mapping.dmp

          • memory/1984-82-0x0000000000000000-mapping.dmp