Analysis

  • max time kernel
    41s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:13

General

  • Target

    bf5822e15ccf6a0e12f58cf020196c4d92aaf5b5e3b9f830a0bb958826d82833.exe

  • Size

    603KB

  • MD5

    7df3ca314cb5038ad885ea09004ae3d0

  • SHA1

    f5dc7f80bc9660c8b3cbdde7c5ce84ec1d0067bf

  • SHA256

    bf5822e15ccf6a0e12f58cf020196c4d92aaf5b5e3b9f830a0bb958826d82833

  • SHA512

    238710a440fda8218504c83fc5a92523f1a2159b04bafb975ccad19ad8be46ae696f0e573b7f216db04534e767776e013b389f4214459c1b007404c728bb3916

  • SSDEEP

    12288:+Iny5DYTVzOMxq0X3IwuJAULNL1EZyK/WGB0GSZ0:gUTV9q0X3IlHLHPK/WGB0G

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\bf5822e15ccf6a0e12f58cf020196c4d92aaf5b5e3b9f830a0bb958826d82833.exe
    "C:\Users\Admin\AppData\Local\Temp\bf5822e15ccf6a0e12f58cf020196c4d92aaf5b5e3b9f830a0bb958826d82833.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:860
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2024
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1840
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1324
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1240
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:616
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1260
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1972
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1156
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1140
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1732
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1852
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1752

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2e8c6bca8a217b376b1664bf3186bde6

            SHA1

            d4d69b1fa8c2229bfb1b9b6c371b74ecd496fc1a

            SHA256

            060b376c5e392a1ee7f6611ce71f1b0c5f37fdafcebbe9708cc05471c889ebf8

            SHA512

            7ee5c6a0c4196f298eea6e70a0472bcb722a90c120b5368f383b0788a584526d40e3470ef21ee5cfa8b77c379b00d3e86d6054b09201969abfa916b4d4d3a11a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            25591c8d98e9a2161ecfa93e5f22f7f5

            SHA1

            b766d7c400ca12f8796926e6959d9ce181b2f353

            SHA256

            4f6309b46bbc4b98b93519bb81d93c2b0a3fd430098ff4c7fa3713d9e9f54081

            SHA512

            5c832c55db06da23331a21894d83bca2661c020ad4aae172d088dbe606509db5c73b52752b97a7f06622c7494f781f6cd4f26c7680119f4d6924cf0fe4ce8d56

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            fd8f56493821ccd34fa015f7c551b562

            SHA1

            2ec69e401a9231b4b6e805eeeed1f90fd5044805

            SHA256

            963671b88c5447030fa9cd9ef9dc4812c7d4e5e51551cbadae80832c5c6310eb

            SHA512

            67c78448c574fdd76e5e3029d0ddcb98ad46edbd2ac0bc8b66db2196e743f0f3cdf07a4bdd98a76fc803601c3ba1a1359d24f67ed2786514908a23fde849c9dd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f00b897cddd0ba70b0a2062b24d3946

            SHA1

            92e5121e09af0c77ccefa49d1fdb65e3b41696c4

            SHA256

            717158b9848f3b2f7bd9dd207d90aacb2a47f50f22c96f58e2ef62d6962bae52

            SHA512

            d506532865c003232782c85cb67fe5069b6b817ba1d700657ee9ed606761bc5b1a31f06f9c48cfd4227bd37f24e2c483789d9997337be79f2f6ab9f9231621e7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f00b897cddd0ba70b0a2062b24d3946

            SHA1

            92e5121e09af0c77ccefa49d1fdb65e3b41696c4

            SHA256

            717158b9848f3b2f7bd9dd207d90aacb2a47f50f22c96f58e2ef62d6962bae52

            SHA512

            d506532865c003232782c85cb67fe5069b6b817ba1d700657ee9ed606761bc5b1a31f06f9c48cfd4227bd37f24e2c483789d9997337be79f2f6ab9f9231621e7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0cc8e2d476c4ed701a76863168ca28ed

            SHA1

            a12491ef5606d839942d02aea79fe6a92b9c0dac

            SHA256

            61901279c01cdbc0f585da62c1bdc70d8ee6e20e84d4b56fac44251e772f373b

            SHA512

            9bf1004fd7b1614bc1c3ee3d7077adffa9713b008bc8c76893522db60846e6012b80230440c80899f364c069d3c871428c0e87585eb35cead37900caaf983fca

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0cc8e2d476c4ed701a76863168ca28ed

            SHA1

            a12491ef5606d839942d02aea79fe6a92b9c0dac

            SHA256

            61901279c01cdbc0f585da62c1bdc70d8ee6e20e84d4b56fac44251e772f373b

            SHA512

            9bf1004fd7b1614bc1c3ee3d7077adffa9713b008bc8c76893522db60846e6012b80230440c80899f364c069d3c871428c0e87585eb35cead37900caaf983fca

          • \Users\Admin\AppData\Local\Temp\nsoFE30.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoFE30.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoFE30.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoFE30.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoFE30.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2e8c6bca8a217b376b1664bf3186bde6

            SHA1

            d4d69b1fa8c2229bfb1b9b6c371b74ecd496fc1a

            SHA256

            060b376c5e392a1ee7f6611ce71f1b0c5f37fdafcebbe9708cc05471c889ebf8

            SHA512

            7ee5c6a0c4196f298eea6e70a0472bcb722a90c120b5368f383b0788a584526d40e3470ef21ee5cfa8b77c379b00d3e86d6054b09201969abfa916b4d4d3a11a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2e8c6bca8a217b376b1664bf3186bde6

            SHA1

            d4d69b1fa8c2229bfb1b9b6c371b74ecd496fc1a

            SHA256

            060b376c5e392a1ee7f6611ce71f1b0c5f37fdafcebbe9708cc05471c889ebf8

            SHA512

            7ee5c6a0c4196f298eea6e70a0472bcb722a90c120b5368f383b0788a584526d40e3470ef21ee5cfa8b77c379b00d3e86d6054b09201969abfa916b4d4d3a11a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            2e8c6bca8a217b376b1664bf3186bde6

            SHA1

            d4d69b1fa8c2229bfb1b9b6c371b74ecd496fc1a

            SHA256

            060b376c5e392a1ee7f6611ce71f1b0c5f37fdafcebbe9708cc05471c889ebf8

            SHA512

            7ee5c6a0c4196f298eea6e70a0472bcb722a90c120b5368f383b0788a584526d40e3470ef21ee5cfa8b77c379b00d3e86d6054b09201969abfa916b4d4d3a11a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            25591c8d98e9a2161ecfa93e5f22f7f5

            SHA1

            b766d7c400ca12f8796926e6959d9ce181b2f353

            SHA256

            4f6309b46bbc4b98b93519bb81d93c2b0a3fd430098ff4c7fa3713d9e9f54081

            SHA512

            5c832c55db06da23331a21894d83bca2661c020ad4aae172d088dbe606509db5c73b52752b97a7f06622c7494f781f6cd4f26c7680119f4d6924cf0fe4ce8d56

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            25591c8d98e9a2161ecfa93e5f22f7f5

            SHA1

            b766d7c400ca12f8796926e6959d9ce181b2f353

            SHA256

            4f6309b46bbc4b98b93519bb81d93c2b0a3fd430098ff4c7fa3713d9e9f54081

            SHA512

            5c832c55db06da23331a21894d83bca2661c020ad4aae172d088dbe606509db5c73b52752b97a7f06622c7494f781f6cd4f26c7680119f4d6924cf0fe4ce8d56

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            fd8f56493821ccd34fa015f7c551b562

            SHA1

            2ec69e401a9231b4b6e805eeeed1f90fd5044805

            SHA256

            963671b88c5447030fa9cd9ef9dc4812c7d4e5e51551cbadae80832c5c6310eb

            SHA512

            67c78448c574fdd76e5e3029d0ddcb98ad46edbd2ac0bc8b66db2196e743f0f3cdf07a4bdd98a76fc803601c3ba1a1359d24f67ed2786514908a23fde849c9dd

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f00b897cddd0ba70b0a2062b24d3946

            SHA1

            92e5121e09af0c77ccefa49d1fdb65e3b41696c4

            SHA256

            717158b9848f3b2f7bd9dd207d90aacb2a47f50f22c96f58e2ef62d6962bae52

            SHA512

            d506532865c003232782c85cb67fe5069b6b817ba1d700657ee9ed606761bc5b1a31f06f9c48cfd4227bd37f24e2c483789d9997337be79f2f6ab9f9231621e7

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0cc8e2d476c4ed701a76863168ca28ed

            SHA1

            a12491ef5606d839942d02aea79fe6a92b9c0dac

            SHA256

            61901279c01cdbc0f585da62c1bdc70d8ee6e20e84d4b56fac44251e772f373b

            SHA512

            9bf1004fd7b1614bc1c3ee3d7077adffa9713b008bc8c76893522db60846e6012b80230440c80899f364c069d3c871428c0e87585eb35cead37900caaf983fca

          • memory/616-70-0x0000000000000000-mapping.dmp

          • memory/860-57-0x0000000000000000-mapping.dmp

          • memory/1044-54-0x0000000075071000-0x0000000075073000-memory.dmp

            Filesize

            8KB

          • memory/1044-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1044-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1140-86-0x0000000000000000-mapping.dmp

          • memory/1156-81-0x0000000000000000-mapping.dmp

          • memory/1240-64-0x0000000000000000-mapping.dmp

          • memory/1260-76-0x0000000000000000-mapping.dmp

          • memory/1324-62-0x0000000000000000-mapping.dmp

          • memory/1732-87-0x0000000000000000-mapping.dmp

          • memory/1840-61-0x0000000000000000-mapping.dmp

          • memory/1972-80-0x0000000000000000-mapping.dmp

          • memory/2024-58-0x0000000000000000-mapping.dmp