Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    22/11/2022, 00:06

General

  • Target

    2a83c62a5ef0f95dc338f406b1bdbd553317c8b6f7a41aab6224d0008a0a1b6b.exe

  • Size

    602KB

  • MD5

    93f6a9745c9a087834eed626006cc942

  • SHA1

    0422a0c6aef667d2a422b004410fa4f61b302774

  • SHA256

    2a83c62a5ef0f95dc338f406b1bdbd553317c8b6f7a41aab6224d0008a0a1b6b

  • SHA512

    e3bac478f08fd373447f299ed0fefa9ce8fa9e787a38418693d73aba6078a2d161283856dc45744c70c352d6ffb7433d12e042a1362525423a58dcc7cf904721

  • SSDEEP

    12288:9Iny5DYTcIMZaWIqHZtUMgJY6bxSl41Wbsm1RTQc0I3MUy:pUTcLwWTZtUjbU1bsmXd3

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\2a83c62a5ef0f95dc338f406b1bdbd553317c8b6f7a41aab6224d0008a0a1b6b.exe
    "C:\Users\Admin\AppData\Local\Temp\2a83c62a5ef0f95dc338f406b1bdbd553317c8b6f7a41aab6224d0008a0a1b6b.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:1824
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1020
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2020
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1924
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1640
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1920
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:776
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1756
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1396
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1112
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2024
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2044
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1672
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1712

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            93988859ff224644e0c206306ac47aab

            SHA1

            52626b0417af161ee4671370cd0a8e09af353f91

            SHA256

            f844a16a813f96e056ea9021b2432904b1a56a9b8672715397ea31618e47f958

            SHA512

            121a6bb84c9fe0a6cba949e5d3f07e3d82cf9d3e2962e78829cf199cbb7920a66c885ef38dce7f8e3053f0ab169b0328538d79ee5f11aa592dca9aac90da16f6

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2d7c7211c124e01746359333bfe8ebff

            SHA1

            dd77110f96f344670a09ab3c234de7b4ff239eaf

            SHA256

            38751735955255e27d7446a406d66cba4786e506ead224e426bf0661aca3db61

            SHA512

            5f66f4891d4262c5773d2930877704e4beccaf7483a0b3066d4390cf1e16a11497937c90b4c1791908c8986a5dc7387204dd250a896387881e83bc6a64e66bb6

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            843118b844afb19d4d9c465b82ccd4cf

            SHA1

            a341cf608f66fd136f4f003d4f6de3cc6a2ace58

            SHA256

            e62b8a0722a96c872f9bc34646a7aa05cbf992dfdbd3a4e4534769afc0810f32

            SHA512

            377f278a75893d3bf7d188f65cd3ef83730ead13d6b478d082d503768d3c3b7120cc34f60c902e1a5caa40c8b94856f28013204e45cc5db31c81ba5c82ce04bb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5f9ecb53f2668627533742a9b8714675

            SHA1

            d82ee4ce633b8b1e5b2eee7554e35a333bf52272

            SHA256

            7728937652995d81081c8c630057733f051a178da5c15bc75625878336d55a42

            SHA512

            07128c7198b2cb95c2316f1861e7e7a669f6970e8b2ad5b6f639d8be91ce969057b4e4c1dc44b7e90fcb9967bdf99781e58e5f3e5c31fc50f3c42cb217a89bf3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5f9ecb53f2668627533742a9b8714675

            SHA1

            d82ee4ce633b8b1e5b2eee7554e35a333bf52272

            SHA256

            7728937652995d81081c8c630057733f051a178da5c15bc75625878336d55a42

            SHA512

            07128c7198b2cb95c2316f1861e7e7a669f6970e8b2ad5b6f639d8be91ce969057b4e4c1dc44b7e90fcb9967bdf99781e58e5f3e5c31fc50f3c42cb217a89bf3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            31368b66e45b3156567774e8da840711

            SHA1

            37811ae24fd058dc02de6937901a75495ac5b4ec

            SHA256

            eafb47c31f1299905a773e6ae80583c7e8462d3f83908d351e89cfafa7d4dbbc

            SHA512

            e4fa0b5cde2ba910364753d78d27378d54bd2db849ab1509ac1c9c87e1657cfc70182b9dd1f7512753e8a543e21b44ef845a7036970db9ec209699c1998bf670

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            31368b66e45b3156567774e8da840711

            SHA1

            37811ae24fd058dc02de6937901a75495ac5b4ec

            SHA256

            eafb47c31f1299905a773e6ae80583c7e8462d3f83908d351e89cfafa7d4dbbc

            SHA512

            e4fa0b5cde2ba910364753d78d27378d54bd2db849ab1509ac1c9c87e1657cfc70182b9dd1f7512753e8a543e21b44ef845a7036970db9ec209699c1998bf670

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy34E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            93988859ff224644e0c206306ac47aab

            SHA1

            52626b0417af161ee4671370cd0a8e09af353f91

            SHA256

            f844a16a813f96e056ea9021b2432904b1a56a9b8672715397ea31618e47f958

            SHA512

            121a6bb84c9fe0a6cba949e5d3f07e3d82cf9d3e2962e78829cf199cbb7920a66c885ef38dce7f8e3053f0ab169b0328538d79ee5f11aa592dca9aac90da16f6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            93988859ff224644e0c206306ac47aab

            SHA1

            52626b0417af161ee4671370cd0a8e09af353f91

            SHA256

            f844a16a813f96e056ea9021b2432904b1a56a9b8672715397ea31618e47f958

            SHA512

            121a6bb84c9fe0a6cba949e5d3f07e3d82cf9d3e2962e78829cf199cbb7920a66c885ef38dce7f8e3053f0ab169b0328538d79ee5f11aa592dca9aac90da16f6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            93988859ff224644e0c206306ac47aab

            SHA1

            52626b0417af161ee4671370cd0a8e09af353f91

            SHA256

            f844a16a813f96e056ea9021b2432904b1a56a9b8672715397ea31618e47f958

            SHA512

            121a6bb84c9fe0a6cba949e5d3f07e3d82cf9d3e2962e78829cf199cbb7920a66c885ef38dce7f8e3053f0ab169b0328538d79ee5f11aa592dca9aac90da16f6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2d7c7211c124e01746359333bfe8ebff

            SHA1

            dd77110f96f344670a09ab3c234de7b4ff239eaf

            SHA256

            38751735955255e27d7446a406d66cba4786e506ead224e426bf0661aca3db61

            SHA512

            5f66f4891d4262c5773d2930877704e4beccaf7483a0b3066d4390cf1e16a11497937c90b4c1791908c8986a5dc7387204dd250a896387881e83bc6a64e66bb6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            2d7c7211c124e01746359333bfe8ebff

            SHA1

            dd77110f96f344670a09ab3c234de7b4ff239eaf

            SHA256

            38751735955255e27d7446a406d66cba4786e506ead224e426bf0661aca3db61

            SHA512

            5f66f4891d4262c5773d2930877704e4beccaf7483a0b3066d4390cf1e16a11497937c90b4c1791908c8986a5dc7387204dd250a896387881e83bc6a64e66bb6

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            843118b844afb19d4d9c465b82ccd4cf

            SHA1

            a341cf608f66fd136f4f003d4f6de3cc6a2ace58

            SHA256

            e62b8a0722a96c872f9bc34646a7aa05cbf992dfdbd3a4e4534769afc0810f32

            SHA512

            377f278a75893d3bf7d188f65cd3ef83730ead13d6b478d082d503768d3c3b7120cc34f60c902e1a5caa40c8b94856f28013204e45cc5db31c81ba5c82ce04bb

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5f9ecb53f2668627533742a9b8714675

            SHA1

            d82ee4ce633b8b1e5b2eee7554e35a333bf52272

            SHA256

            7728937652995d81081c8c630057733f051a178da5c15bc75625878336d55a42

            SHA512

            07128c7198b2cb95c2316f1861e7e7a669f6970e8b2ad5b6f639d8be91ce969057b4e4c1dc44b7e90fcb9967bdf99781e58e5f3e5c31fc50f3c42cb217a89bf3

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            31368b66e45b3156567774e8da840711

            SHA1

            37811ae24fd058dc02de6937901a75495ac5b4ec

            SHA256

            eafb47c31f1299905a773e6ae80583c7e8462d3f83908d351e89cfafa7d4dbbc

            SHA512

            e4fa0b5cde2ba910364753d78d27378d54bd2db849ab1509ac1c9c87e1657cfc70182b9dd1f7512753e8a543e21b44ef845a7036970db9ec209699c1998bf670

          • memory/1824-54-0x0000000075571000-0x0000000075573000-memory.dmp

            Filesize

            8KB

          • memory/1824-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1824-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB