Analysis

  • max time kernel
    91s
  • max time network
    154s
  • 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 10:20

General

  • Target

    8215a4acbe4e81f7c371e08bc6e87281eb394d7c8ba83205d75fa6e4ea532645.exe

  • Size

    603KB

  • MD5

    c746e5e0b2be11d9824d57576933fa58

  • SHA1

    aa242d725e799e9beb3f189ae53a95be143c6b0d

  • SHA256

    8215a4acbe4e81f7c371e08bc6e87281eb394d7c8ba83205d75fa6e4ea532645

  • SHA512

    99eb9e9db29799a6dfbb07e0c9df90b3a140feaf1da4307418b0b160528c0237645a4bc4a2eb0759f39040648487fd5e0c4a9d7a298e517e3c39cc3569564de9

  • SSDEEP

    12288:lIny5DYT8czR1c1Rztbl5OfME+a53oZtb1mpMxVWxDl8B:RUTx7c1R5bl5OUV8YZN15WO

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\8215a4acbe4e81f7c371e08bc6e87281eb394d7c8ba83205d75fa6e4ea532645.exe
    "C:\Users\Admin\AppData\Local\Temp\8215a4acbe4e81f7c371e08bc6e87281eb394d7c8ba83205d75fa6e4ea532645.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:4028
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1376
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4912
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4952
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1816
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1732
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1904
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2260
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3320
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3876
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:444
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2836
          • 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:4400
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1704

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF7E4.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3dbf42012313671a4257071ce3694b37

            SHA1

            907122c3fdcdafb3f867d210ede0d49a91ea1dcf

            SHA256

            882b2a44a6c49be259cb852e6440a4569996ed02279bd32642756f71356fc769

            SHA512

            1da786267b810f8b0dc941f00081420d0ad3c88468c2e652bdbb01035f9f7e6601666f2c259931133ea7d017932ca229020f0251012a16ee04187c8c4fac1f7c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3dbf42012313671a4257071ce3694b37

            SHA1

            907122c3fdcdafb3f867d210ede0d49a91ea1dcf

            SHA256

            882b2a44a6c49be259cb852e6440a4569996ed02279bd32642756f71356fc769

            SHA512

            1da786267b810f8b0dc941f00081420d0ad3c88468c2e652bdbb01035f9f7e6601666f2c259931133ea7d017932ca229020f0251012a16ee04187c8c4fac1f7c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3dbf42012313671a4257071ce3694b37

            SHA1

            907122c3fdcdafb3f867d210ede0d49a91ea1dcf

            SHA256

            882b2a44a6c49be259cb852e6440a4569996ed02279bd32642756f71356fc769

            SHA512

            1da786267b810f8b0dc941f00081420d0ad3c88468c2e652bdbb01035f9f7e6601666f2c259931133ea7d017932ca229020f0251012a16ee04187c8c4fac1f7c

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3dbf42012313671a4257071ce3694b37

            SHA1

            907122c3fdcdafb3f867d210ede0d49a91ea1dcf

            SHA256

            882b2a44a6c49be259cb852e6440a4569996ed02279bd32642756f71356fc769

            SHA512

            1da786267b810f8b0dc941f00081420d0ad3c88468c2e652bdbb01035f9f7e6601666f2c259931133ea7d017932ca229020f0251012a16ee04187c8c4fac1f7c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            068559ed5cc7d341d010e7610af6eb86

            SHA1

            2745741dfa81382101ff60b70209a34ac33cd9fe

            SHA256

            ba76174cd22b2d05bf8f96cd7b2de91ff3dd8ff4380c8a0ce3aef678d3d0bc78

            SHA512

            df5e8d36492fb54fe76d9be6fe24927a0b9199e4da9056e56fd67f471aefa03ff8e81db0b9b289f77ce9d302186d92f9303cc1ea5b7ed3e736e2476d5d816416

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            068559ed5cc7d341d010e7610af6eb86

            SHA1

            2745741dfa81382101ff60b70209a34ac33cd9fe

            SHA256

            ba76174cd22b2d05bf8f96cd7b2de91ff3dd8ff4380c8a0ce3aef678d3d0bc78

            SHA512

            df5e8d36492fb54fe76d9be6fe24927a0b9199e4da9056e56fd67f471aefa03ff8e81db0b9b289f77ce9d302186d92f9303cc1ea5b7ed3e736e2476d5d816416

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            068559ed5cc7d341d010e7610af6eb86

            SHA1

            2745741dfa81382101ff60b70209a34ac33cd9fe

            SHA256

            ba76174cd22b2d05bf8f96cd7b2de91ff3dd8ff4380c8a0ce3aef678d3d0bc78

            SHA512

            df5e8d36492fb54fe76d9be6fe24927a0b9199e4da9056e56fd67f471aefa03ff8e81db0b9b289f77ce9d302186d92f9303cc1ea5b7ed3e736e2476d5d816416

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b08a4bf86be69ce54d36e6ed767fb510

            SHA1

            d4e120d5010eba1be3928ded2796dfad9db7671b

            SHA256

            5e7e4227913ed83fe299b257325b66d30c2ecf396f39fd785bec7a5615270335

            SHA512

            b3a553597c0a103cc1554f517fad586fb9f046e6326b8d193976039b834e4fab0e402e18daee605dc1953a2009705f37033c0f4a1fabc981d65536613e886584

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b08a4bf86be69ce54d36e6ed767fb510

            SHA1

            d4e120d5010eba1be3928ded2796dfad9db7671b

            SHA256

            5e7e4227913ed83fe299b257325b66d30c2ecf396f39fd785bec7a5615270335

            SHA512

            b3a553597c0a103cc1554f517fad586fb9f046e6326b8d193976039b834e4fab0e402e18daee605dc1953a2009705f37033c0f4a1fabc981d65536613e886584

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca028ee5ffd6506904d8439873beccc1

            SHA1

            e9880bcf0b2cc6413d5a0360e62fd3120959d0eb

            SHA256

            31cdfddd01f86a040aea5041de28c6aaa8b04a12bd94004164565bf925c5f3f2

            SHA512

            e16766891010e2e006a5fe96fe75071d1db03ea6e84ff034bab80bfdcbd5eca9a657ca49d6795ba11655e3fb5f606ee8baec782c52f65af8a6cc4f01600e0a95

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca028ee5ffd6506904d8439873beccc1

            SHA1

            e9880bcf0b2cc6413d5a0360e62fd3120959d0eb

            SHA256

            31cdfddd01f86a040aea5041de28c6aaa8b04a12bd94004164565bf925c5f3f2

            SHA512

            e16766891010e2e006a5fe96fe75071d1db03ea6e84ff034bab80bfdcbd5eca9a657ca49d6795ba11655e3fb5f606ee8baec782c52f65af8a6cc4f01600e0a95

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ca028ee5ffd6506904d8439873beccc1

            SHA1

            e9880bcf0b2cc6413d5a0360e62fd3120959d0eb

            SHA256

            31cdfddd01f86a040aea5041de28c6aaa8b04a12bd94004164565bf925c5f3f2

            SHA512

            e16766891010e2e006a5fe96fe75071d1db03ea6e84ff034bab80bfdcbd5eca9a657ca49d6795ba11655e3fb5f606ee8baec782c52f65af8a6cc4f01600e0a95

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f305695b9980668b6cc69b22f1ed894b

            SHA1

            c84a638a637bf060a2aa5da34b3c28dba0eb391c

            SHA256

            c72ada4c0a64459fdd930c54cd8d416e2f1e226fd6ba23435b76f23f1611643f

            SHA512

            9e93feebfdc388f3d9aebc1e2157c72ee2956799edd59b437a68d3e8f321b25afc330a9c1a22350312742c637ebc497b577e2d33eb09e1d530e63c4c3849e139

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f305695b9980668b6cc69b22f1ed894b

            SHA1

            c84a638a637bf060a2aa5da34b3c28dba0eb391c

            SHA256

            c72ada4c0a64459fdd930c54cd8d416e2f1e226fd6ba23435b76f23f1611643f

            SHA512

            9e93feebfdc388f3d9aebc1e2157c72ee2956799edd59b437a68d3e8f321b25afc330a9c1a22350312742c637ebc497b577e2d33eb09e1d530e63c4c3849e139

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f305695b9980668b6cc69b22f1ed894b

            SHA1

            c84a638a637bf060a2aa5da34b3c28dba0eb391c

            SHA256

            c72ada4c0a64459fdd930c54cd8d416e2f1e226fd6ba23435b76f23f1611643f

            SHA512

            9e93feebfdc388f3d9aebc1e2157c72ee2956799edd59b437a68d3e8f321b25afc330a9c1a22350312742c637ebc497b577e2d33eb09e1d530e63c4c3849e139

          • memory/444-165-0x0000000000000000-mapping.dmp

          • memory/1376-135-0x0000000000000000-mapping.dmp

          • memory/1732-142-0x0000000000000000-mapping.dmp

          • memory/1816-141-0x0000000000000000-mapping.dmp

          • memory/1904-147-0x0000000000000000-mapping.dmp

          • memory/2260-153-0x0000000000000000-mapping.dmp

          • memory/2836-166-0x0000000000000000-mapping.dmp

          • memory/3320-158-0x0000000000000000-mapping.dmp

          • memory/3876-159-0x0000000000000000-mapping.dmp

          • memory/4028-136-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4028-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4912-137-0x0000000000000000-mapping.dmp

          • memory/4952-140-0x0000000000000000-mapping.dmp