Analysis

  • max time kernel
    41s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:29

General

  • Target

    340ba79781d9dd7a7e355e95da566b3b997612fd18fc9363a3350afd1d4a18fe.exe

  • Size

    602KB

  • MD5

    756c3af025059283a05be5ade247a432

  • SHA1

    55ea303f847ef4b98f1c7073e3e7a9b9b049833c

  • SHA256

    340ba79781d9dd7a7e355e95da566b3b997612fd18fc9363a3350afd1d4a18fe

  • SHA512

    0d573d688862b9a08c05cf62859251278bdb6d9ba4243c4a5a4c7a5bda359a15bbea8268694aa92f6a15d5977c8dcd6c105e4c1109b66c4f4d52941af40c3d8a

  • SSDEEP

    12288:UIny5DYTSIpdgxs+IND2G17cPuqNd3xaPkTTz7hA18U/:SUTSOdHl2uF+zu

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\340ba79781d9dd7a7e355e95da566b3b997612fd18fc9363a3350afd1d4a18fe.exe
    "C:\Users\Admin\AppData\Local\Temp\340ba79781d9dd7a7e355e95da566b3b997612fd18fc9363a3350afd1d4a18fe.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:1832
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1388
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1224
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1332
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2044
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:968
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:856
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:688
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1780
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1776
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1496
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:976
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1632
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1668

          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

            cb4255ba2f3392ed37a2c64998c3aa26

            SHA1

            aa5feca84219295a4ff42fb9d0f48f802fbd8881

            SHA256

            ef6be31846ecb2c09c25bbb1ea78311bb6819ab7e8cd1b28ba46844b815b70b3

            SHA512

            eca92cda8a7e9200b483ee5da326d27302321ef8b31f50726ffea75ed8a0c3a1484f2eb4dc18547c30d846ae3284d6e1818e4e07fdcec47707c6b2cd8192f091

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

            241KB

            MD5

            6450a01a73998393cde170988f1cab10

            SHA1

            bfd9d98d6953b4f15006fc01d281d2c9fd5fce86

            SHA256

            4bb25dc50218a0e66a9b250f87b2198c74e7bb013e6bd10ad4a3a9ab0e2adbdd

            SHA512

            8621615c426f9b0e2263d30ef5a52a66f16cc850e5271073451961f6c8c104f025a13b13965121929ac5b262a78c4d770daab49b340e093ba78f92188f698a71

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

            108KB

            MD5

            df430c5466ba9bf3614d9bcedb330e8f

            SHA1

            91c04286bf22ff8263a6c2dc2e3c719f6d346deb

            SHA256

            cc1927ea1f8972c227d9bbe9515c04ad422c44789a2330974386237f32adf136

            SHA512

            2656e26806f2656a8822146d14c8dabf852a9881f2569efeda4544ad0aadeaaebc7cbcf43145e775adefac79f806e927c0485e752131cd98f53c7a8694482d4e

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

            176KB

            MD5

            ee5d972abc1325595f34a89abc080751

            SHA1

            bf669824eba7899de3e375ff3a36890f678f98c4

            SHA256

            840be580dd8cfb69b13bd274592b7b9bf91148b07830dd43ecff23a9ead2b442

            SHA512

            c1d821c72292e59c72a0a5f119b2e9a64912fed8c34d3ef803829930e25c803100e404fab3d8c93bbdea27bcb9054b1754313eb772437f95e174daa995555e1c

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

            176KB

            MD5

            ee5d972abc1325595f34a89abc080751

            SHA1

            bf669824eba7899de3e375ff3a36890f678f98c4

            SHA256

            840be580dd8cfb69b13bd274592b7b9bf91148b07830dd43ecff23a9ead2b442

            SHA512

            c1d821c72292e59c72a0a5f119b2e9a64912fed8c34d3ef803829930e25c803100e404fab3d8c93bbdea27bcb9054b1754313eb772437f95e174daa995555e1c

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

            158KB

            MD5

            591acdaec81950121c5b079e39cd3506

            SHA1

            a48bb668cf71fc8937edec8de77839ec3286c205

            SHA256

            16de0794a756cd82cf543839b69f99c782973a36cf93d1115a3da5c8d979a827

            SHA512

            5f8b52c6fb86f8b4bea47aa2a30f4b19b068ffba66f6dcc0efb7e23149bac84bfbffcd6dc0bcc5c93912ed01af95b7bb43d0d8f3c8e9e11147b08bb1a49d8ee3

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

            158KB

            MD5

            591acdaec81950121c5b079e39cd3506

            SHA1

            a48bb668cf71fc8937edec8de77839ec3286c205

            SHA256

            16de0794a756cd82cf543839b69f99c782973a36cf93d1115a3da5c8d979a827

            SHA512

            5f8b52c6fb86f8b4bea47aa2a30f4b19b068ffba66f6dcc0efb7e23149bac84bfbffcd6dc0bcc5c93912ed01af95b7bb43d0d8f3c8e9e11147b08bb1a49d8ee3

          • \Users\Admin\AppData\Local\Temp\nsd4981.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd4981.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd4981.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd4981.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd4981.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cb4255ba2f3392ed37a2c64998c3aa26

            SHA1

            aa5feca84219295a4ff42fb9d0f48f802fbd8881

            SHA256

            ef6be31846ecb2c09c25bbb1ea78311bb6819ab7e8cd1b28ba46844b815b70b3

            SHA512

            eca92cda8a7e9200b483ee5da326d27302321ef8b31f50726ffea75ed8a0c3a1484f2eb4dc18547c30d846ae3284d6e1818e4e07fdcec47707c6b2cd8192f091

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cb4255ba2f3392ed37a2c64998c3aa26

            SHA1

            aa5feca84219295a4ff42fb9d0f48f802fbd8881

            SHA256

            ef6be31846ecb2c09c25bbb1ea78311bb6819ab7e8cd1b28ba46844b815b70b3

            SHA512

            eca92cda8a7e9200b483ee5da326d27302321ef8b31f50726ffea75ed8a0c3a1484f2eb4dc18547c30d846ae3284d6e1818e4e07fdcec47707c6b2cd8192f091

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            cb4255ba2f3392ed37a2c64998c3aa26

            SHA1

            aa5feca84219295a4ff42fb9d0f48f802fbd8881

            SHA256

            ef6be31846ecb2c09c25bbb1ea78311bb6819ab7e8cd1b28ba46844b815b70b3

            SHA512

            eca92cda8a7e9200b483ee5da326d27302321ef8b31f50726ffea75ed8a0c3a1484f2eb4dc18547c30d846ae3284d6e1818e4e07fdcec47707c6b2cd8192f091

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            6450a01a73998393cde170988f1cab10

            SHA1

            bfd9d98d6953b4f15006fc01d281d2c9fd5fce86

            SHA256

            4bb25dc50218a0e66a9b250f87b2198c74e7bb013e6bd10ad4a3a9ab0e2adbdd

            SHA512

            8621615c426f9b0e2263d30ef5a52a66f16cc850e5271073451961f6c8c104f025a13b13965121929ac5b262a78c4d770daab49b340e093ba78f92188f698a71

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            6450a01a73998393cde170988f1cab10

            SHA1

            bfd9d98d6953b4f15006fc01d281d2c9fd5fce86

            SHA256

            4bb25dc50218a0e66a9b250f87b2198c74e7bb013e6bd10ad4a3a9ab0e2adbdd

            SHA512

            8621615c426f9b0e2263d30ef5a52a66f16cc850e5271073451961f6c8c104f025a13b13965121929ac5b262a78c4d770daab49b340e093ba78f92188f698a71

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            df430c5466ba9bf3614d9bcedb330e8f

            SHA1

            91c04286bf22ff8263a6c2dc2e3c719f6d346deb

            SHA256

            cc1927ea1f8972c227d9bbe9515c04ad422c44789a2330974386237f32adf136

            SHA512

            2656e26806f2656a8822146d14c8dabf852a9881f2569efeda4544ad0aadeaaebc7cbcf43145e775adefac79f806e927c0485e752131cd98f53c7a8694482d4e

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ee5d972abc1325595f34a89abc080751

            SHA1

            bf669824eba7899de3e375ff3a36890f678f98c4

            SHA256

            840be580dd8cfb69b13bd274592b7b9bf91148b07830dd43ecff23a9ead2b442

            SHA512

            c1d821c72292e59c72a0a5f119b2e9a64912fed8c34d3ef803829930e25c803100e404fab3d8c93bbdea27bcb9054b1754313eb772437f95e174daa995555e1c

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            591acdaec81950121c5b079e39cd3506

            SHA1

            a48bb668cf71fc8937edec8de77839ec3286c205

            SHA256

            16de0794a756cd82cf543839b69f99c782973a36cf93d1115a3da5c8d979a827

            SHA512

            5f8b52c6fb86f8b4bea47aa2a30f4b19b068ffba66f6dcc0efb7e23149bac84bfbffcd6dc0bcc5c93912ed01af95b7bb43d0d8f3c8e9e11147b08bb1a49d8ee3

          • memory/688-76-0x0000000000000000-mapping.dmp
          • memory/856-70-0x0000000000000000-mapping.dmp
          • memory/968-64-0x0000000000000000-mapping.dmp
          • memory/976-87-0x0000000000000000-mapping.dmp
          • memory/1224-58-0x0000000000000000-mapping.dmp
          • memory/1332-60-0x0000000000000000-mapping.dmp
          • memory/1388-57-0x0000000000000000-mapping.dmp
          • memory/1496-86-0x0000000000000000-mapping.dmp
          • memory/1776-81-0x0000000000000000-mapping.dmp
          • memory/1780-80-0x0000000000000000-mapping.dmp
          • memory/1832-54-0x00000000763F1000-0x00000000763F3000-memory.dmp
            Filesize

            8KB

          • memory/1832-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1832-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/2044-61-0x0000000000000000-mapping.dmp