Analysis

  • max time kernel
    9s
  • max time network
    46s
  • 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

    276ccee26e501d867ffbcc60b2c9dfd0721143eb78e352595117c68d8f131454.exe

  • Size

    602KB

  • MD5

    caf9124c87ff46d6807368c61f2d37ca

  • SHA1

    0da0fd0425b85e7c8a9ddd9dd99205e90352f897

  • SHA256

    276ccee26e501d867ffbcc60b2c9dfd0721143eb78e352595117c68d8f131454

  • SHA512

    6836ad6be34d384fe8e76016f719874b09e89c0fdc134d3cc24b024f5ec447efc76c4c7a691da596ebfc3e1cd0ca11649e6968700f13ebbef2f9b8446c9d2591

  • SSDEEP

    12288:YIny5DYTfSeXG3yVgweHFPmlqwJs1Oz+lkyvU3dkTq:2UTfSeXGgg9/+/zFyvUdC

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\276ccee26e501d867ffbcc60b2c9dfd0721143eb78e352595117c68d8f131454.exe
    "C:\Users\Admin\AppData\Local\Temp\276ccee26e501d867ffbcc60b2c9dfd0721143eb78e352595117c68d8f131454.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:1680
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1480
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1724
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1720
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1988
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1200
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1364
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1920
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:328
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1180
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:588
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1924
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1500

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0b641bbf30a0387fdc0b2bc69ef70e73

            SHA1

            79f02330b587dcb61bc33638251548ba53aca1cc

            SHA256

            62bdd8c8bcb3d7dc5958a3ab5020f54153392facb08c317d3c16e555b99631e6

            SHA512

            82c8004fbe16c86fb1f6f5ba8df11fe4e30ea32a905fb86812da7c962b94e2f19afb315bf41cc6df05163702d13ae14a5b625be954d8319a3b883c011f4c67b8

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            7a676a854f7afd5de2dc9b345170a4e8

            SHA1

            642da582fe46edd482fa4d3ad9a6561d04f48870

            SHA256

            35d2ffbe525968098dcad12f8b2ea4f4b169b2c314eb815e11312b557fe0129f

            SHA512

            6eb60c6148e33faf3e59ec3547798137628a621a3bb73452362e22cff4e3d6ea67800a5717d12ab2155deb23e57762b7bd90eed1a0202686f1ebbe35ad2ff6b4

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            31c84e6acfccc45fba89832b622ef8af

            SHA1

            57d0ad1ed3cc6eb36b05f2307af7f284e45a63d7

            SHA256

            94ff0d4ea2a5a8c6f2b8adeadcd52ba9b536e6663aad977af52e7db6f929338a

            SHA512

            cd00e21ca6c6e02c7ff30a269abe8fa1e891ce0f521f253cac819681455a786f0cdb9fe32890cbb6ae8039f20fb893b964210a287af615bff4d89c9a77fa7581

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            51c0e213612be21824ede705cf768450

            SHA1

            0b48d6d95bd993112427108292232fd1673b6d49

            SHA256

            795b69777d60bef263a467d00b6642a4abb3e47bec14306822b8aeb53f46ec7a

            SHA512

            3b91aefbafbcf8e095d954d9a2c6ffcbace50e08a239f9c6019dabfec1016f6d94e17444104e4387eba8c60567126353146fa395633181aa1689c6f830b8a688

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            51c0e213612be21824ede705cf768450

            SHA1

            0b48d6d95bd993112427108292232fd1673b6d49

            SHA256

            795b69777d60bef263a467d00b6642a4abb3e47bec14306822b8aeb53f46ec7a

            SHA512

            3b91aefbafbcf8e095d954d9a2c6ffcbace50e08a239f9c6019dabfec1016f6d94e17444104e4387eba8c60567126353146fa395633181aa1689c6f830b8a688

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            884e05e0432396604bd147b1e54bca61

            SHA1

            dd95b331c77e8577e550c3a4e34e0f0ade937d6d

            SHA256

            e5673bfd7bc9d53a1d3a9e83a18332e15b7b54d0282da141f75b9329e891ff2a

            SHA512

            45f0fd9efc8f5757ccd11f822861f27422fe9948b4ae5f88e85ba92a0841d8191e29fe8770c6598fb160abc177ab9b49c2df1b423b8f101510da4a0b5c6685af

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            884e05e0432396604bd147b1e54bca61

            SHA1

            dd95b331c77e8577e550c3a4e34e0f0ade937d6d

            SHA256

            e5673bfd7bc9d53a1d3a9e83a18332e15b7b54d0282da141f75b9329e891ff2a

            SHA512

            45f0fd9efc8f5757ccd11f822861f27422fe9948b4ae5f88e85ba92a0841d8191e29fe8770c6598fb160abc177ab9b49c2df1b423b8f101510da4a0b5c6685af

          • \Users\Admin\AppData\Local\Temp\nsj7AFD.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj7AFD.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj7AFD.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj7AFD.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj7AFD.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0b641bbf30a0387fdc0b2bc69ef70e73

            SHA1

            79f02330b587dcb61bc33638251548ba53aca1cc

            SHA256

            62bdd8c8bcb3d7dc5958a3ab5020f54153392facb08c317d3c16e555b99631e6

            SHA512

            82c8004fbe16c86fb1f6f5ba8df11fe4e30ea32a905fb86812da7c962b94e2f19afb315bf41cc6df05163702d13ae14a5b625be954d8319a3b883c011f4c67b8

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0b641bbf30a0387fdc0b2bc69ef70e73

            SHA1

            79f02330b587dcb61bc33638251548ba53aca1cc

            SHA256

            62bdd8c8bcb3d7dc5958a3ab5020f54153392facb08c317d3c16e555b99631e6

            SHA512

            82c8004fbe16c86fb1f6f5ba8df11fe4e30ea32a905fb86812da7c962b94e2f19afb315bf41cc6df05163702d13ae14a5b625be954d8319a3b883c011f4c67b8

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0b641bbf30a0387fdc0b2bc69ef70e73

            SHA1

            79f02330b587dcb61bc33638251548ba53aca1cc

            SHA256

            62bdd8c8bcb3d7dc5958a3ab5020f54153392facb08c317d3c16e555b99631e6

            SHA512

            82c8004fbe16c86fb1f6f5ba8df11fe4e30ea32a905fb86812da7c962b94e2f19afb315bf41cc6df05163702d13ae14a5b625be954d8319a3b883c011f4c67b8

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            7a676a854f7afd5de2dc9b345170a4e8

            SHA1

            642da582fe46edd482fa4d3ad9a6561d04f48870

            SHA256

            35d2ffbe525968098dcad12f8b2ea4f4b169b2c314eb815e11312b557fe0129f

            SHA512

            6eb60c6148e33faf3e59ec3547798137628a621a3bb73452362e22cff4e3d6ea67800a5717d12ab2155deb23e57762b7bd90eed1a0202686f1ebbe35ad2ff6b4

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            7a676a854f7afd5de2dc9b345170a4e8

            SHA1

            642da582fe46edd482fa4d3ad9a6561d04f48870

            SHA256

            35d2ffbe525968098dcad12f8b2ea4f4b169b2c314eb815e11312b557fe0129f

            SHA512

            6eb60c6148e33faf3e59ec3547798137628a621a3bb73452362e22cff4e3d6ea67800a5717d12ab2155deb23e57762b7bd90eed1a0202686f1ebbe35ad2ff6b4

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            31c84e6acfccc45fba89832b622ef8af

            SHA1

            57d0ad1ed3cc6eb36b05f2307af7f284e45a63d7

            SHA256

            94ff0d4ea2a5a8c6f2b8adeadcd52ba9b536e6663aad977af52e7db6f929338a

            SHA512

            cd00e21ca6c6e02c7ff30a269abe8fa1e891ce0f521f253cac819681455a786f0cdb9fe32890cbb6ae8039f20fb893b964210a287af615bff4d89c9a77fa7581

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            51c0e213612be21824ede705cf768450

            SHA1

            0b48d6d95bd993112427108292232fd1673b6d49

            SHA256

            795b69777d60bef263a467d00b6642a4abb3e47bec14306822b8aeb53f46ec7a

            SHA512

            3b91aefbafbcf8e095d954d9a2c6ffcbace50e08a239f9c6019dabfec1016f6d94e17444104e4387eba8c60567126353146fa395633181aa1689c6f830b8a688

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            884e05e0432396604bd147b1e54bca61

            SHA1

            dd95b331c77e8577e550c3a4e34e0f0ade937d6d

            SHA256

            e5673bfd7bc9d53a1d3a9e83a18332e15b7b54d0282da141f75b9329e891ff2a

            SHA512

            45f0fd9efc8f5757ccd11f822861f27422fe9948b4ae5f88e85ba92a0841d8191e29fe8770c6598fb160abc177ab9b49c2df1b423b8f101510da4a0b5c6685af

          • memory/328-81-0x0000000000000000-mapping.dmp
          • memory/588-87-0x0000000000000000-mapping.dmp
          • memory/1180-86-0x0000000000000000-mapping.dmp
          • memory/1200-70-0x0000000000000000-mapping.dmp
          • memory/1364-76-0x0000000000000000-mapping.dmp
          • memory/1480-57-0x0000000000000000-mapping.dmp
          • memory/1680-54-0x0000000075FB1000-0x0000000075FB3000-memory.dmp
            Filesize

            8KB

          • memory/1680-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1680-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1720-62-0x0000000000000000-mapping.dmp
          • memory/1724-58-0x0000000000000000-mapping.dmp
          • memory/1920-80-0x0000000000000000-mapping.dmp
          • memory/1988-64-0x0000000000000000-mapping.dmp
          • memory/2024-61-0x0000000000000000-mapping.dmp