Analysis

  • max time kernel
    27s
  • 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

    33b2ef111d07ebdde2327e58d1a9a7857f363eb0e58febdf1883b7747def0379.exe

  • Size

    601KB

  • MD5

    0c98fc03999b343d1601c6feac6e6376

  • SHA1

    59c6859b150f774a2b2134ca9e8c64d84b6662ff

  • SHA256

    33b2ef111d07ebdde2327e58d1a9a7857f363eb0e58febdf1883b7747def0379

  • SHA512

    c0ca12b11e36d04c5dfab7c4a9fdc89b212c0aceeb2988debe604b2f3370ca982b747f4143ecfd69b820508cdf5dee4ab83b0142fd8ae1a975b7cc5a247e3dc2

  • SSDEEP

    12288:tIny5DYTEuwCsxdhJ2laBhrDTe1XFCxGUfzDPJoUYBBm04hxX:5UTEuBsxdhJmuhXT6F4fvxUBm0s

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\33b2ef111d07ebdde2327e58d1a9a7857f363eb0e58febdf1883b7747def0379.exe
    "C:\Users\Admin\AppData\Local\Temp\33b2ef111d07ebdde2327e58d1a9a7857f363eb0e58febdf1883b7747def0379.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:1572
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1820
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:944
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1644
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1548
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1724
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1116
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:300
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:268
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1400
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:576
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:896
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1196
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1500

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4ab172714360f99110a573e4da2cec8e

            SHA1

            7b072627e3b6d8a459cf6642cc9c31737cf11575

            SHA256

            e67f2ac2fb3f10e570c3b6c74f093b3a359a27fccabf6c0a11b68e6b120e1154

            SHA512

            bb40ce84348c415149e327b7cacbf7bcda6d2929c0d0dffd2116acc0e4064b932611778a692655e8555cbb8c18ea9614ab0d415629c1259e31cf74a1f6786c07

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8cd41f3343e6842fbd0ca67849f486f5

            SHA1

            8a817ea184b76fe92a7b9f89b99658f794b72600

            SHA256

            3b522ee357d970777b4fef32c4c09b5caf1139006151f84dc561856ec3199278

            SHA512

            a2d4ded3b1c9706c62eed1f98457c35d6d04abfc0e9dea06f8fdd3fa07f576669baf296804c711854735020cd6e20f2a6b11c1e679280c9d2b7c6a6f22e2d223

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            340654e440b02f456666f362152a4236

            SHA1

            a7d6e6393bae992f2095cf4158b46feab8180527

            SHA256

            55dad25d6fc07812427758d611b496726e9dccfac55f0115ab39685caa597d1e

            SHA512

            4b98247a43eab383aea82fca48ae6317cfc7d59ec0d54946cb7e1204d3deab7637d4742a8b1bcbc0c10c6f091c22d3e7fae74517470377938a8ec691200c9abf

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9ae8c28a051faa09dfd8c144bff7694b

            SHA1

            4663ba62b7c21ab540c6046531bab1d601147583

            SHA256

            245fc9a6a5c19c70e4000defad07960857b3d611bacb7e3b09cc47900c528390

            SHA512

            4d7ec99845770a52b124798d1996e82c84955c16e3de6332aebbe556ee72cbb27767c9cad13d5d07a81f0cddead81c615d4e92baca67024ff0cdbb64c5d0faa3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9ae8c28a051faa09dfd8c144bff7694b

            SHA1

            4663ba62b7c21ab540c6046531bab1d601147583

            SHA256

            245fc9a6a5c19c70e4000defad07960857b3d611bacb7e3b09cc47900c528390

            SHA512

            4d7ec99845770a52b124798d1996e82c84955c16e3de6332aebbe556ee72cbb27767c9cad13d5d07a81f0cddead81c615d4e92baca67024ff0cdbb64c5d0faa3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0b7c13ae2d349760c6b751c0dd3612f6

            SHA1

            1e1f714c76d4b121e2c2fc1d27ebf9beffa45a78

            SHA256

            27ccc8e5353a5078b7ccff0087a03a733b3cbc939a0e926d2d46cebdd72973db

            SHA512

            0fef525a3cb80ebae7d5b9b9a479875091a234a7d3745fb2012e0c4ddf03ddd39e57a4a756857d5af78aff0d03c5fcf49279309cc4c14557f5303eaca7f3d260

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0b7c13ae2d349760c6b751c0dd3612f6

            SHA1

            1e1f714c76d4b121e2c2fc1d27ebf9beffa45a78

            SHA256

            27ccc8e5353a5078b7ccff0087a03a733b3cbc939a0e926d2d46cebdd72973db

            SHA512

            0fef525a3cb80ebae7d5b9b9a479875091a234a7d3745fb2012e0c4ddf03ddd39e57a4a756857d5af78aff0d03c5fcf49279309cc4c14557f5303eaca7f3d260

          • \Users\Admin\AppData\Local\Temp\nsj70EF.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj70EF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj70EF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj70EF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj70EF.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4ab172714360f99110a573e4da2cec8e

            SHA1

            7b072627e3b6d8a459cf6642cc9c31737cf11575

            SHA256

            e67f2ac2fb3f10e570c3b6c74f093b3a359a27fccabf6c0a11b68e6b120e1154

            SHA512

            bb40ce84348c415149e327b7cacbf7bcda6d2929c0d0dffd2116acc0e4064b932611778a692655e8555cbb8c18ea9614ab0d415629c1259e31cf74a1f6786c07

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4ab172714360f99110a573e4da2cec8e

            SHA1

            7b072627e3b6d8a459cf6642cc9c31737cf11575

            SHA256

            e67f2ac2fb3f10e570c3b6c74f093b3a359a27fccabf6c0a11b68e6b120e1154

            SHA512

            bb40ce84348c415149e327b7cacbf7bcda6d2929c0d0dffd2116acc0e4064b932611778a692655e8555cbb8c18ea9614ab0d415629c1259e31cf74a1f6786c07

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4ab172714360f99110a573e4da2cec8e

            SHA1

            7b072627e3b6d8a459cf6642cc9c31737cf11575

            SHA256

            e67f2ac2fb3f10e570c3b6c74f093b3a359a27fccabf6c0a11b68e6b120e1154

            SHA512

            bb40ce84348c415149e327b7cacbf7bcda6d2929c0d0dffd2116acc0e4064b932611778a692655e8555cbb8c18ea9614ab0d415629c1259e31cf74a1f6786c07

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8cd41f3343e6842fbd0ca67849f486f5

            SHA1

            8a817ea184b76fe92a7b9f89b99658f794b72600

            SHA256

            3b522ee357d970777b4fef32c4c09b5caf1139006151f84dc561856ec3199278

            SHA512

            a2d4ded3b1c9706c62eed1f98457c35d6d04abfc0e9dea06f8fdd3fa07f576669baf296804c711854735020cd6e20f2a6b11c1e679280c9d2b7c6a6f22e2d223

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8cd41f3343e6842fbd0ca67849f486f5

            SHA1

            8a817ea184b76fe92a7b9f89b99658f794b72600

            SHA256

            3b522ee357d970777b4fef32c4c09b5caf1139006151f84dc561856ec3199278

            SHA512

            a2d4ded3b1c9706c62eed1f98457c35d6d04abfc0e9dea06f8fdd3fa07f576669baf296804c711854735020cd6e20f2a6b11c1e679280c9d2b7c6a6f22e2d223

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            340654e440b02f456666f362152a4236

            SHA1

            a7d6e6393bae992f2095cf4158b46feab8180527

            SHA256

            55dad25d6fc07812427758d611b496726e9dccfac55f0115ab39685caa597d1e

            SHA512

            4b98247a43eab383aea82fca48ae6317cfc7d59ec0d54946cb7e1204d3deab7637d4742a8b1bcbc0c10c6f091c22d3e7fae74517470377938a8ec691200c9abf

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9ae8c28a051faa09dfd8c144bff7694b

            SHA1

            4663ba62b7c21ab540c6046531bab1d601147583

            SHA256

            245fc9a6a5c19c70e4000defad07960857b3d611bacb7e3b09cc47900c528390

            SHA512

            4d7ec99845770a52b124798d1996e82c84955c16e3de6332aebbe556ee72cbb27767c9cad13d5d07a81f0cddead81c615d4e92baca67024ff0cdbb64c5d0faa3

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0b7c13ae2d349760c6b751c0dd3612f6

            SHA1

            1e1f714c76d4b121e2c2fc1d27ebf9beffa45a78

            SHA256

            27ccc8e5353a5078b7ccff0087a03a733b3cbc939a0e926d2d46cebdd72973db

            SHA512

            0fef525a3cb80ebae7d5b9b9a479875091a234a7d3745fb2012e0c4ddf03ddd39e57a4a756857d5af78aff0d03c5fcf49279309cc4c14557f5303eaca7f3d260

          • memory/268-80-0x0000000000000000-mapping.dmp

          • memory/300-76-0x0000000000000000-mapping.dmp

          • memory/576-86-0x0000000000000000-mapping.dmp

          • memory/896-87-0x0000000000000000-mapping.dmp

          • memory/944-58-0x0000000000000000-mapping.dmp

          • memory/1116-70-0x0000000000000000-mapping.dmp

          • memory/1400-81-0x0000000000000000-mapping.dmp

          • memory/1548-61-0x0000000000000000-mapping.dmp

          • memory/1572-54-0x00000000758C1000-0x00000000758C3000-memory.dmp

            Filesize

            8KB

          • memory/1572-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1572-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1644-60-0x0000000000000000-mapping.dmp

          • memory/1724-64-0x0000000000000000-mapping.dmp

          • memory/1820-57-0x0000000000000000-mapping.dmp