Analysis

  • max time kernel
    38s
  • max time network
    43s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:31

General

  • Target

    20cb2b3fd36ce75489b10f864f9384fd86f8a41e189b5d8205c8eb3d0c9d8a5d.exe

  • Size

    601KB

  • MD5

    0c00383123b7cec1403250f37787e0ff

  • SHA1

    799008ea0747148ac4d6ff49ebf2b193522e00cf

  • SHA256

    20cb2b3fd36ce75489b10f864f9384fd86f8a41e189b5d8205c8eb3d0c9d8a5d

  • SHA512

    8319c4d0b76403cf5cf95a485cf5b27355b49287e2e2980a6aed86d356620db2a08fbb11c8aa0c062cb353396560ad2b2775ecff4f22277aa67161cfed165214

  • SSDEEP

    12288:6Iny5DYT9fih13A3+8JP9l0z3dMDtgdtN/hMO1NDeiZw4L0s:cUThih13Z60TeCpMmNDeJ4

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\20cb2b3fd36ce75489b10f864f9384fd86f8a41e189b5d8205c8eb3d0c9d8a5d.exe
    "C:\Users\Admin\AppData\Local\Temp\20cb2b3fd36ce75489b10f864f9384fd86f8a41e189b5d8205c8eb3d0c9d8a5d.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:1504
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1352
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1112
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:888
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:956
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:972
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:380
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1844
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1168
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1320
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1484
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1052
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1512
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1364

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b59d10103a1742e8bafa82efe149cd7

            SHA1

            9c93fd87be9f12f96c5d193eda377dbd8623f3c3

            SHA256

            f7c2a0b9ee1b160c866a156743f4825bf8883f57965e0f1e5eace084da57cea9

            SHA512

            0b277e6288a9a22d79447e78945dd2aba0e47338bf6fa22703a6c3975443554883e8ab757cb7244ce5fc3d56aeb6631935c179cb0b2d3f63b987f38f0f1bbbd0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            48e1e976926acb917bf7487a7e8da11f

            SHA1

            04f3f87508cb611207ff944c5a8b77f74b4f4861

            SHA256

            5f0f70f450195ee0797750216fc1c564b3da9031cbea5d17c10c0ebdc75c6d90

            SHA512

            7fcd8d901ad0b1c4f5099cdf0ed1713d0756cd9b200f49f52e255efe1a37b7588d72df0fa590bd6dc8353ad244f9af8e0acfc6814c05b56e13c9c33191abed32

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6de5be9e92304fb2ffbfb53397cd053c

            SHA1

            600196f9faea0d603e5156177b1199d658f9f1ad

            SHA256

            f1745d2b36fd68b7b481ec4900dfe80fe88b135210f17f6afb88bf3e88475efb

            SHA512

            dc4eae4756720445ac947e2c96baf16b121795448ef75424389467b62467f5dd713662030911ed55500b058a0f1594be69ef84c418c3c11b1ace33992139a107

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            385cad95fa26f81c602d86a637f8b50c

            SHA1

            961d8f16147efab211c63ca167d67b93cfacabd8

            SHA256

            aea97ad85c4da42e4644eb36c5dc4ade2ad36a3ddf39594aad1d0912a490f69a

            SHA512

            c6ca7efdeb1b9a1805855a0d3fd9a0d3826a666b378cdbabb0b871c8730884c97cba4b0d39e15d72ce975fb796b7f26e51e9306596ce30e3f3724b114e762d8f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            385cad95fa26f81c602d86a637f8b50c

            SHA1

            961d8f16147efab211c63ca167d67b93cfacabd8

            SHA256

            aea97ad85c4da42e4644eb36c5dc4ade2ad36a3ddf39594aad1d0912a490f69a

            SHA512

            c6ca7efdeb1b9a1805855a0d3fd9a0d3826a666b378cdbabb0b871c8730884c97cba4b0d39e15d72ce975fb796b7f26e51e9306596ce30e3f3724b114e762d8f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a02be164147290226186a4f93a35e8b6

            SHA1

            c6115f105927b456064cabd95427cc5e708f7d49

            SHA256

            da05bc8c6b674852c59e2c50c0266ce5ad979f995895f1af74f64cf0b7922d63

            SHA512

            8b7399b120c1f0c56d51e8c97623a3e590799bfbca821fd9a1f907531cc79638622e653ac915290cf8fa043f91f8fbd5997659b9332aa8ddeff61562ad78a5d8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a02be164147290226186a4f93a35e8b6

            SHA1

            c6115f105927b456064cabd95427cc5e708f7d49

            SHA256

            da05bc8c6b674852c59e2c50c0266ce5ad979f995895f1af74f64cf0b7922d63

            SHA512

            8b7399b120c1f0c56d51e8c97623a3e590799bfbca821fd9a1f907531cc79638622e653ac915290cf8fa043f91f8fbd5997659b9332aa8ddeff61562ad78a5d8

          • \Users\Admin\AppData\Local\Temp\nsj55D1.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj55D1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj55D1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj55D1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj55D1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b59d10103a1742e8bafa82efe149cd7

            SHA1

            9c93fd87be9f12f96c5d193eda377dbd8623f3c3

            SHA256

            f7c2a0b9ee1b160c866a156743f4825bf8883f57965e0f1e5eace084da57cea9

            SHA512

            0b277e6288a9a22d79447e78945dd2aba0e47338bf6fa22703a6c3975443554883e8ab757cb7244ce5fc3d56aeb6631935c179cb0b2d3f63b987f38f0f1bbbd0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b59d10103a1742e8bafa82efe149cd7

            SHA1

            9c93fd87be9f12f96c5d193eda377dbd8623f3c3

            SHA256

            f7c2a0b9ee1b160c866a156743f4825bf8883f57965e0f1e5eace084da57cea9

            SHA512

            0b277e6288a9a22d79447e78945dd2aba0e47338bf6fa22703a6c3975443554883e8ab757cb7244ce5fc3d56aeb6631935c179cb0b2d3f63b987f38f0f1bbbd0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b59d10103a1742e8bafa82efe149cd7

            SHA1

            9c93fd87be9f12f96c5d193eda377dbd8623f3c3

            SHA256

            f7c2a0b9ee1b160c866a156743f4825bf8883f57965e0f1e5eace084da57cea9

            SHA512

            0b277e6288a9a22d79447e78945dd2aba0e47338bf6fa22703a6c3975443554883e8ab757cb7244ce5fc3d56aeb6631935c179cb0b2d3f63b987f38f0f1bbbd0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            48e1e976926acb917bf7487a7e8da11f

            SHA1

            04f3f87508cb611207ff944c5a8b77f74b4f4861

            SHA256

            5f0f70f450195ee0797750216fc1c564b3da9031cbea5d17c10c0ebdc75c6d90

            SHA512

            7fcd8d901ad0b1c4f5099cdf0ed1713d0756cd9b200f49f52e255efe1a37b7588d72df0fa590bd6dc8353ad244f9af8e0acfc6814c05b56e13c9c33191abed32

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            48e1e976926acb917bf7487a7e8da11f

            SHA1

            04f3f87508cb611207ff944c5a8b77f74b4f4861

            SHA256

            5f0f70f450195ee0797750216fc1c564b3da9031cbea5d17c10c0ebdc75c6d90

            SHA512

            7fcd8d901ad0b1c4f5099cdf0ed1713d0756cd9b200f49f52e255efe1a37b7588d72df0fa590bd6dc8353ad244f9af8e0acfc6814c05b56e13c9c33191abed32

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6de5be9e92304fb2ffbfb53397cd053c

            SHA1

            600196f9faea0d603e5156177b1199d658f9f1ad

            SHA256

            f1745d2b36fd68b7b481ec4900dfe80fe88b135210f17f6afb88bf3e88475efb

            SHA512

            dc4eae4756720445ac947e2c96baf16b121795448ef75424389467b62467f5dd713662030911ed55500b058a0f1594be69ef84c418c3c11b1ace33992139a107

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            385cad95fa26f81c602d86a637f8b50c

            SHA1

            961d8f16147efab211c63ca167d67b93cfacabd8

            SHA256

            aea97ad85c4da42e4644eb36c5dc4ade2ad36a3ddf39594aad1d0912a490f69a

            SHA512

            c6ca7efdeb1b9a1805855a0d3fd9a0d3826a666b378cdbabb0b871c8730884c97cba4b0d39e15d72ce975fb796b7f26e51e9306596ce30e3f3724b114e762d8f

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a02be164147290226186a4f93a35e8b6

            SHA1

            c6115f105927b456064cabd95427cc5e708f7d49

            SHA256

            da05bc8c6b674852c59e2c50c0266ce5ad979f995895f1af74f64cf0b7922d63

            SHA512

            8b7399b120c1f0c56d51e8c97623a3e590799bfbca821fd9a1f907531cc79638622e653ac915290cf8fa043f91f8fbd5997659b9332aa8ddeff61562ad78a5d8

          • memory/380-70-0x0000000000000000-mapping.dmp

          • memory/888-61-0x0000000000000000-mapping.dmp

          • memory/956-62-0x0000000000000000-mapping.dmp

          • memory/972-64-0x0000000000000000-mapping.dmp

          • memory/1052-87-0x0000000000000000-mapping.dmp

          • memory/1112-59-0x0000000000000000-mapping.dmp

          • memory/1168-80-0x0000000000000000-mapping.dmp

          • memory/1320-81-0x0000000000000000-mapping.dmp

          • memory/1352-58-0x0000000000000000-mapping.dmp

          • memory/1484-86-0x0000000000000000-mapping.dmp

          • memory/1504-54-0x00000000768A1000-0x00000000768A3000-memory.dmp

            Filesize

            8KB

          • memory/1504-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1504-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1844-76-0x0000000000000000-mapping.dmp