Analysis

  • max time kernel
    42s
  • 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 10:08

General

  • Target

    ee1cf20a1da0bfa3ee30acb6ec902a0ecddc9b440450c4c45f2d06840eb73ae1.exe

  • Size

    602KB

  • MD5

    b736fc628d248bb1823c5a0dc64c52c7

  • SHA1

    605ab909fb862975eedd321fc42d73a273fb8369

  • SHA256

    ee1cf20a1da0bfa3ee30acb6ec902a0ecddc9b440450c4c45f2d06840eb73ae1

  • SHA512

    87bcc732b067998c88ef65c6e4bc462802e29307495c6342534b686c8bbb9044f0bb27f2996ae2fb809d182c1595f1c3f8d3afd8bd794520a9e4dead0ddd9a59

  • SSDEEP

    12288:6Iny5DYTWZ/r4zlJue+093vXAdmruBPoiI6uTWmpxFDxi:cUTWZ/kzlTH93em4I6SWixFV

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\ee1cf20a1da0bfa3ee30acb6ec902a0ecddc9b440450c4c45f2d06840eb73ae1.exe
    "C:\Users\Admin\AppData\Local\Temp\ee1cf20a1da0bfa3ee30acb6ec902a0ecddc9b440450c4c45f2d06840eb73ae1.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:1488
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:928
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1608
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:960
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1376
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1200
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:564
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:276
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:848
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1772
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1660
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1920
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:608
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1432

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b1af5e25f57a1da6e01deaf4fffbb72f

            SHA1

            48f4a4d52f366ac31c49d9cb996d62ff384ba9d5

            SHA256

            7e5bf89ea94b1ffedaac5639020e4b630954b3082f5b4231238cce1faa66127c

            SHA512

            42bb58eb441f654615a177320adb8fc8022fe910c983c3c12e2e08d30b8a1b4f7aae3aea54ba38a1bfa1c9b304b0c3909841e7fb9c4b96e09f8acbab50d54826

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8f6021b7f49e0d9bbf98ef6eb0af859f

            SHA1

            3b02cda373ae872e7ac2abf33e1e9f87c8c98955

            SHA256

            1f99ff979d1db911e6a0fb3490b706762ecde110eb33db859045e3ed86fea0e3

            SHA512

            426832731bf45c76c11b79c90dfc3ce8680a9995584100841655e98ff2fdf1ffaacff9f9e984ad9ea6a39b3d2482f596210ba8e7cfdf22aa21623a6a760a3a24

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            81649b3209cbe53a35cf24056e521449

            SHA1

            f2724cf08b887fb3c040415641cac98b46232d6d

            SHA256

            49843e5285305f17a8eddb36ab2b1dc0fa69ed941569ec485476e964e1293164

            SHA512

            75a812e96943115b23fc1786863800efb3c5b583a69147b2da5e8a32ec6f63e82d36e25428bbb6ab660a3d12eadb89d3488ea4f08d909ab6a5b491fe8651a53a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a45cb760ffaa485ba01eddef094ad26b

            SHA1

            6e1908254ed5bd47058f1267314afc08df2567af

            SHA256

            19b766f4a072d0715fcd712715816f8e5184c2c913c27bb469b6794a2bf1a719

            SHA512

            3e2727ec782b607f000c638324c12f3ff333b38cf2cd98273aeff7be29f9ac4d827dc9f42ae8fb7d22a5096dd92283b09011902d8ee612879cffd3349111b711

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a45cb760ffaa485ba01eddef094ad26b

            SHA1

            6e1908254ed5bd47058f1267314afc08df2567af

            SHA256

            19b766f4a072d0715fcd712715816f8e5184c2c913c27bb469b6794a2bf1a719

            SHA512

            3e2727ec782b607f000c638324c12f3ff333b38cf2cd98273aeff7be29f9ac4d827dc9f42ae8fb7d22a5096dd92283b09011902d8ee612879cffd3349111b711

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fcfde63d804287f62f07444b13f54d71

            SHA1

            41ee083fcdf0aedc25a26c9de63efb685e0d86b8

            SHA256

            6485ef7a8a95ea7bfc99ccc8a81f0aff141037d7e6eee4abc9c762e1f8f95616

            SHA512

            c83be580fee18627966f29212b48d9164559ca34078800f32add349178eac3bbecf1d45a7d0790879b4701ff75acf2f0d2fd2a8be2b21a7b7f28100ccf3f039a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fcfde63d804287f62f07444b13f54d71

            SHA1

            41ee083fcdf0aedc25a26c9de63efb685e0d86b8

            SHA256

            6485ef7a8a95ea7bfc99ccc8a81f0aff141037d7e6eee4abc9c762e1f8f95616

            SHA512

            c83be580fee18627966f29212b48d9164559ca34078800f32add349178eac3bbecf1d45a7d0790879b4701ff75acf2f0d2fd2a8be2b21a7b7f28100ccf3f039a

          • \Users\Admin\AppData\Local\Temp\nsy570.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy570.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy570.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy570.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy570.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b1af5e25f57a1da6e01deaf4fffbb72f

            SHA1

            48f4a4d52f366ac31c49d9cb996d62ff384ba9d5

            SHA256

            7e5bf89ea94b1ffedaac5639020e4b630954b3082f5b4231238cce1faa66127c

            SHA512

            42bb58eb441f654615a177320adb8fc8022fe910c983c3c12e2e08d30b8a1b4f7aae3aea54ba38a1bfa1c9b304b0c3909841e7fb9c4b96e09f8acbab50d54826

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b1af5e25f57a1da6e01deaf4fffbb72f

            SHA1

            48f4a4d52f366ac31c49d9cb996d62ff384ba9d5

            SHA256

            7e5bf89ea94b1ffedaac5639020e4b630954b3082f5b4231238cce1faa66127c

            SHA512

            42bb58eb441f654615a177320adb8fc8022fe910c983c3c12e2e08d30b8a1b4f7aae3aea54ba38a1bfa1c9b304b0c3909841e7fb9c4b96e09f8acbab50d54826

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b1af5e25f57a1da6e01deaf4fffbb72f

            SHA1

            48f4a4d52f366ac31c49d9cb996d62ff384ba9d5

            SHA256

            7e5bf89ea94b1ffedaac5639020e4b630954b3082f5b4231238cce1faa66127c

            SHA512

            42bb58eb441f654615a177320adb8fc8022fe910c983c3c12e2e08d30b8a1b4f7aae3aea54ba38a1bfa1c9b304b0c3909841e7fb9c4b96e09f8acbab50d54826

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8f6021b7f49e0d9bbf98ef6eb0af859f

            SHA1

            3b02cda373ae872e7ac2abf33e1e9f87c8c98955

            SHA256

            1f99ff979d1db911e6a0fb3490b706762ecde110eb33db859045e3ed86fea0e3

            SHA512

            426832731bf45c76c11b79c90dfc3ce8680a9995584100841655e98ff2fdf1ffaacff9f9e984ad9ea6a39b3d2482f596210ba8e7cfdf22aa21623a6a760a3a24

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8f6021b7f49e0d9bbf98ef6eb0af859f

            SHA1

            3b02cda373ae872e7ac2abf33e1e9f87c8c98955

            SHA256

            1f99ff979d1db911e6a0fb3490b706762ecde110eb33db859045e3ed86fea0e3

            SHA512

            426832731bf45c76c11b79c90dfc3ce8680a9995584100841655e98ff2fdf1ffaacff9f9e984ad9ea6a39b3d2482f596210ba8e7cfdf22aa21623a6a760a3a24

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            81649b3209cbe53a35cf24056e521449

            SHA1

            f2724cf08b887fb3c040415641cac98b46232d6d

            SHA256

            49843e5285305f17a8eddb36ab2b1dc0fa69ed941569ec485476e964e1293164

            SHA512

            75a812e96943115b23fc1786863800efb3c5b583a69147b2da5e8a32ec6f63e82d36e25428bbb6ab660a3d12eadb89d3488ea4f08d909ab6a5b491fe8651a53a

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a45cb760ffaa485ba01eddef094ad26b

            SHA1

            6e1908254ed5bd47058f1267314afc08df2567af

            SHA256

            19b766f4a072d0715fcd712715816f8e5184c2c913c27bb469b6794a2bf1a719

            SHA512

            3e2727ec782b607f000c638324c12f3ff333b38cf2cd98273aeff7be29f9ac4d827dc9f42ae8fb7d22a5096dd92283b09011902d8ee612879cffd3349111b711

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fcfde63d804287f62f07444b13f54d71

            SHA1

            41ee083fcdf0aedc25a26c9de63efb685e0d86b8

            SHA256

            6485ef7a8a95ea7bfc99ccc8a81f0aff141037d7e6eee4abc9c762e1f8f95616

            SHA512

            c83be580fee18627966f29212b48d9164559ca34078800f32add349178eac3bbecf1d45a7d0790879b4701ff75acf2f0d2fd2a8be2b21a7b7f28100ccf3f039a

          • memory/276-76-0x0000000000000000-mapping.dmp

          • memory/564-70-0x0000000000000000-mapping.dmp

          • memory/848-80-0x0000000000000000-mapping.dmp

          • memory/928-57-0x0000000000000000-mapping.dmp

          • memory/960-61-0x0000000000000000-mapping.dmp

          • memory/1200-64-0x0000000000000000-mapping.dmp

          • memory/1376-62-0x0000000000000000-mapping.dmp

          • memory/1488-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

            Filesize

            8KB

          • memory/1488-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1488-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1608-58-0x0000000000000000-mapping.dmp

          • memory/1660-86-0x0000000000000000-mapping.dmp

          • memory/1772-81-0x0000000000000000-mapping.dmp

          • memory/1920-87-0x0000000000000000-mapping.dmp