Analysis

  • max time kernel
    41s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:56

General

  • Target

    5443d0deb581306856d9a18706766e4ead4cf1dd4ffdc482aa739baa60169777.exe

  • Size

    446KB

  • MD5

    e2b66db1afb55b940536c7f697b62294

  • SHA1

    d59a5b4287783d908ecb7a7b560e7c79bb6e0364

  • SHA256

    5443d0deb581306856d9a18706766e4ead4cf1dd4ffdc482aa739baa60169777

  • SHA512

    c88b9bce5f5aa587e60e3ee8be09878832572f32961cbfc707ec38a4c51b99b994c35fd05ef23847e4a249c0c6b15ba3cf517f2b0ce820beedca7227029e5221

  • SSDEEP

    6144:XzfFPYhz2Lr0ZZxJtsO1ZgKRr3cU/oRO9J1k5G7h1G8x+WEoKsmO6g0OlgNblxKU:5PnH0zlvlXMOhZy840A9OWMcSQnfM6

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\5443d0deb581306856d9a18706766e4ead4cf1dd4ffdc482aa739baa60169777.exe
    "C:\Users\Admin\AppData\Local\Temp\5443d0deb581306856d9a18706766e4ead4cf1dd4ffdc482aa739baa60169777.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:848
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:916
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:588
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1560
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1576
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:472
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1756
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1416
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1184
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:664
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2000
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1352
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1752
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1772

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cd56c62b2bd8d3da5d8d5eec3170669c

            SHA1

            d72b38b8b40dcd66f0aadc24bd41447b4a1a1933

            SHA256

            9cda1f0ee258749a3d4eb22f957c370838415d38ff1d91b39673b42230eca393

            SHA512

            19533ca0a5b0338a932e6ea2cbb0fa11db47656d3572d56380e62a829023802c89f7c3f2e1a5eabaaa2862c8b825d5c1b62efc5e7a1656025f0a15a5eb8b103f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a5dd46dc65d908d14237216933065ffb

            SHA1

            5758d24bfd8dc6be2cefb6e3917df39ed60a3871

            SHA256

            f08ca696635ae80d1a686000d104c12956ce52ffedf7876e673b7e37d5bc1917

            SHA512

            0c0d3b1ad6929949f323c7a07497aa4db7e845838fc1b1f87284b064bd9a94bc3ca6f66a61bd041e18c347dd33f96cdce35963e86788fbbce45d92da438324cd

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            415f103b34061ede59f4e4ffb66a2263

            SHA1

            043f116f48ab7b3f83641ff32a723b9c63dc4cdf

            SHA256

            d3887f7dbe00e3d27dad14976efd7125ba3839ed873bff3d0e104e2d48473390

            SHA512

            cbd56d3e0edaea0b8c8a08ec0de80d39a4831e157cc269ae3885e14adff546299fc1a4be0ec1d824e8f5d8933a1278049f33d350a154bf0a179fd322d7976ca5

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            690c013e8eabe13097490358db43c5bf

            SHA1

            f17661f850f6c59b74498b2f51846549e687376e

            SHA256

            a46a12c9851c32fa57a7c43f01999d32753420a8b55cb23ee416b77a13e9cfaf

            SHA512

            bb57e38607b740401d641e530c4efc00066fa61246708281f296cc1cda0ad6110174d0b175d1bb547a2e18c524837eb2f2e5e7f51a6a495f3a3f44c1609e0cf0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            690c013e8eabe13097490358db43c5bf

            SHA1

            f17661f850f6c59b74498b2f51846549e687376e

            SHA256

            a46a12c9851c32fa57a7c43f01999d32753420a8b55cb23ee416b77a13e9cfaf

            SHA512

            bb57e38607b740401d641e530c4efc00066fa61246708281f296cc1cda0ad6110174d0b175d1bb547a2e18c524837eb2f2e5e7f51a6a495f3a3f44c1609e0cf0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            af6c393d0242350e2846d8e29999dc29

            SHA1

            767e80b15a74de72f4b42ec3e47655c1eacb8d34

            SHA256

            8ffbe52a2ff45b5189f2f8c50aec5129724c296e2c3c6ecbe15e0935249ea033

            SHA512

            d6a4dd4d19c0785a71f10859c35f794e2196cd371725077f18b79205287066b971f50093e5e866884341c11162df32b9062017d329ee721b24b4b1079621799c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            af6c393d0242350e2846d8e29999dc29

            SHA1

            767e80b15a74de72f4b42ec3e47655c1eacb8d34

            SHA256

            8ffbe52a2ff45b5189f2f8c50aec5129724c296e2c3c6ecbe15e0935249ea033

            SHA512

            d6a4dd4d19c0785a71f10859c35f794e2196cd371725077f18b79205287066b971f50093e5e866884341c11162df32b9062017d329ee721b24b4b1079621799c

          • \Users\Admin\AppData\Local\Temp\nsjA383.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjA383.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjA383.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjA383.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjA383.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cd56c62b2bd8d3da5d8d5eec3170669c

            SHA1

            d72b38b8b40dcd66f0aadc24bd41447b4a1a1933

            SHA256

            9cda1f0ee258749a3d4eb22f957c370838415d38ff1d91b39673b42230eca393

            SHA512

            19533ca0a5b0338a932e6ea2cbb0fa11db47656d3572d56380e62a829023802c89f7c3f2e1a5eabaaa2862c8b825d5c1b62efc5e7a1656025f0a15a5eb8b103f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cd56c62b2bd8d3da5d8d5eec3170669c

            SHA1

            d72b38b8b40dcd66f0aadc24bd41447b4a1a1933

            SHA256

            9cda1f0ee258749a3d4eb22f957c370838415d38ff1d91b39673b42230eca393

            SHA512

            19533ca0a5b0338a932e6ea2cbb0fa11db47656d3572d56380e62a829023802c89f7c3f2e1a5eabaaa2862c8b825d5c1b62efc5e7a1656025f0a15a5eb8b103f

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cd56c62b2bd8d3da5d8d5eec3170669c

            SHA1

            d72b38b8b40dcd66f0aadc24bd41447b4a1a1933

            SHA256

            9cda1f0ee258749a3d4eb22f957c370838415d38ff1d91b39673b42230eca393

            SHA512

            19533ca0a5b0338a932e6ea2cbb0fa11db47656d3572d56380e62a829023802c89f7c3f2e1a5eabaaa2862c8b825d5c1b62efc5e7a1656025f0a15a5eb8b103f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a5dd46dc65d908d14237216933065ffb

            SHA1

            5758d24bfd8dc6be2cefb6e3917df39ed60a3871

            SHA256

            f08ca696635ae80d1a686000d104c12956ce52ffedf7876e673b7e37d5bc1917

            SHA512

            0c0d3b1ad6929949f323c7a07497aa4db7e845838fc1b1f87284b064bd9a94bc3ca6f66a61bd041e18c347dd33f96cdce35963e86788fbbce45d92da438324cd

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a5dd46dc65d908d14237216933065ffb

            SHA1

            5758d24bfd8dc6be2cefb6e3917df39ed60a3871

            SHA256

            f08ca696635ae80d1a686000d104c12956ce52ffedf7876e673b7e37d5bc1917

            SHA512

            0c0d3b1ad6929949f323c7a07497aa4db7e845838fc1b1f87284b064bd9a94bc3ca6f66a61bd041e18c347dd33f96cdce35963e86788fbbce45d92da438324cd

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            415f103b34061ede59f4e4ffb66a2263

            SHA1

            043f116f48ab7b3f83641ff32a723b9c63dc4cdf

            SHA256

            d3887f7dbe00e3d27dad14976efd7125ba3839ed873bff3d0e104e2d48473390

            SHA512

            cbd56d3e0edaea0b8c8a08ec0de80d39a4831e157cc269ae3885e14adff546299fc1a4be0ec1d824e8f5d8933a1278049f33d350a154bf0a179fd322d7976ca5

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            690c013e8eabe13097490358db43c5bf

            SHA1

            f17661f850f6c59b74498b2f51846549e687376e

            SHA256

            a46a12c9851c32fa57a7c43f01999d32753420a8b55cb23ee416b77a13e9cfaf

            SHA512

            bb57e38607b740401d641e530c4efc00066fa61246708281f296cc1cda0ad6110174d0b175d1bb547a2e18c524837eb2f2e5e7f51a6a495f3a3f44c1609e0cf0

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            af6c393d0242350e2846d8e29999dc29

            SHA1

            767e80b15a74de72f4b42ec3e47655c1eacb8d34

            SHA256

            8ffbe52a2ff45b5189f2f8c50aec5129724c296e2c3c6ecbe15e0935249ea033

            SHA512

            d6a4dd4d19c0785a71f10859c35f794e2196cd371725077f18b79205287066b971f50093e5e866884341c11162df32b9062017d329ee721b24b4b1079621799c

          • memory/472-63-0x0000000000000000-mapping.dmp

          • memory/588-58-0x0000000000000000-mapping.dmp

          • memory/664-80-0x0000000000000000-mapping.dmp

          • memory/848-54-0x0000000075E61000-0x0000000075E63000-memory.dmp

            Filesize

            8KB

          • memory/916-57-0x0000000000000000-mapping.dmp

          • memory/1184-79-0x0000000000000000-mapping.dmp

          • memory/1352-86-0x0000000000000000-mapping.dmp

          • memory/1416-75-0x0000000000000000-mapping.dmp

          • memory/1560-60-0x0000000000000000-mapping.dmp

          • memory/1576-61-0x0000000000000000-mapping.dmp

          • memory/1756-69-0x0000000000000000-mapping.dmp

          • memory/2000-85-0x0000000000000000-mapping.dmp