Analysis

  • max time kernel
    33s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 15:36

General

  • Target

    bffe8ffa3d6b4269c02122d34cd899abc2afd12a1415ac0510928a2d29c1b402.exe

  • Size

    832KB

  • MD5

    e94d702959182103d7f8e00de740f2f6

  • SHA1

    7e3c779d720179c1ea51d92e338bd811e4cbbd3b

  • SHA256

    bffe8ffa3d6b4269c02122d34cd899abc2afd12a1415ac0510928a2d29c1b402

  • SHA512

    0dc02298ed5345109ef5310d2a2066b276bf079142e3bb54df693a5a13d9b2f1426a058098b7bab2af721abb2dd6a282f00dd5aafb2f761adb19f2a68f9838c3

  • SSDEEP

    24576:FrfGR2wDeRMT4Rg9vUJ965XEaogR028IpwqEBA:FYYRMT6YvB5XDM28Gk

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\bffe8ffa3d6b4269c02122d34cd899abc2afd12a1415ac0510928a2d29c1b402.exe
    "C:\Users\Admin\AppData\Local\Temp\bffe8ffa3d6b4269c02122d34cd899abc2afd12a1415ac0510928a2d29c1b402.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:1508
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1444
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1900
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1680
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1636
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:952
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1912
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:584
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1736
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:552
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1916
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1576
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1660
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1804

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            174773a174fb2f78c2546620dc7b5d53

            SHA1

            562434f81808dff0fae5651934efd077fd6f8b97

            SHA256

            2999ba2fe9b7a7a9f0256b2c22affa057d1b3489a772915faca25848e0da6e55

            SHA512

            e7e49464f4a819076f4faf6c2c2077e63f5e2e4af9ab2f76c50e2a9b04ae3f0a4dc5a716875c754b526e9205414489d925d0ea88108cf809c261c7b0c0389f45

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            428KB

            MD5

            de7f9d01e6bbba1b545945f929420665

            SHA1

            6fbdd64780c83932b47457fecb8c1c1b947edd12

            SHA256

            adc9b67d4b395ea77d04f116df8bb78ea01d0cca73c3942a5d19e61b987b90c6

            SHA512

            6e4df5975f7768778a3cab9238f0dff72c85b8f896afff14d29dfc01b0ef1a6fed94047a0284bd96cfa668752a17d340c4004d6554171c094cd9dfb5dd5a3e82

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            a6628ba826e286f9c70a02e22fadbd70

            SHA1

            44c49d97b0f6532e84e26d3c79f041d5a4a44733

            SHA256

            63a5a435ef0b123b1835a81aaab79b3d2f23f5dca3cbb03285ec556966234bb4

            SHA512

            c029d34721ef845759f60a63fad533fd4803ae749e40d530b9808634308d8e951952712d5b614aeac2864e4b4ab11f1e72c8fd38cc415ab40aa4808b05019861

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            1176337c39220290ec5a0fbcf7f7eb0f

            SHA1

            4d24dc52b60dda5894990059ac090c537f584b34

            SHA256

            d13daaf777fd4f104707f4516bf460aada7c8fd4e1f08fbcac499a3a247b9b8f

            SHA512

            f84751da1a92dc5ef9c1a1e307d267e335998a87a4e64ff63af8795fed7502e98f50f2d674a9674eda4d18bb1428ec2f6c8f6487ccf3f6b852672afaeab32863

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            1176337c39220290ec5a0fbcf7f7eb0f

            SHA1

            4d24dc52b60dda5894990059ac090c537f584b34

            SHA256

            d13daaf777fd4f104707f4516bf460aada7c8fd4e1f08fbcac499a3a247b9b8f

            SHA512

            f84751da1a92dc5ef9c1a1e307d267e335998a87a4e64ff63af8795fed7502e98f50f2d674a9674eda4d18bb1428ec2f6c8f6487ccf3f6b852672afaeab32863

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            187KB

            MD5

            7734c86419f587ed020e813f270a37a3

            SHA1

            74152a27164bc1bca10aae6125fce63cab95a4a4

            SHA256

            32e94c0c8b62aeb53a40003a499eded4cad24ec13849888f3fcbae1a75ddd879

            SHA512

            7956d9f52755c6eeb6f91ea39f4a5502ab30f1140f2b026f0c2f7b5f3d354388892e8a075f4d1fc9842377a5546a9419e77e565c44f5bda028abd7e9fd9b82d7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            187KB

            MD5

            7734c86419f587ed020e813f270a37a3

            SHA1

            74152a27164bc1bca10aae6125fce63cab95a4a4

            SHA256

            32e94c0c8b62aeb53a40003a499eded4cad24ec13849888f3fcbae1a75ddd879

            SHA512

            7956d9f52755c6eeb6f91ea39f4a5502ab30f1140f2b026f0c2f7b5f3d354388892e8a075f4d1fc9842377a5546a9419e77e565c44f5bda028abd7e9fd9b82d7

          • \Users\Admin\AppData\Local\Temp\nsjBF3D.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjBF3D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjBF3D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjBF3D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjBF3D.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            174773a174fb2f78c2546620dc7b5d53

            SHA1

            562434f81808dff0fae5651934efd077fd6f8b97

            SHA256

            2999ba2fe9b7a7a9f0256b2c22affa057d1b3489a772915faca25848e0da6e55

            SHA512

            e7e49464f4a819076f4faf6c2c2077e63f5e2e4af9ab2f76c50e2a9b04ae3f0a4dc5a716875c754b526e9205414489d925d0ea88108cf809c261c7b0c0389f45

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            174773a174fb2f78c2546620dc7b5d53

            SHA1

            562434f81808dff0fae5651934efd077fd6f8b97

            SHA256

            2999ba2fe9b7a7a9f0256b2c22affa057d1b3489a772915faca25848e0da6e55

            SHA512

            e7e49464f4a819076f4faf6c2c2077e63f5e2e4af9ab2f76c50e2a9b04ae3f0a4dc5a716875c754b526e9205414489d925d0ea88108cf809c261c7b0c0389f45

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            174773a174fb2f78c2546620dc7b5d53

            SHA1

            562434f81808dff0fae5651934efd077fd6f8b97

            SHA256

            2999ba2fe9b7a7a9f0256b2c22affa057d1b3489a772915faca25848e0da6e55

            SHA512

            e7e49464f4a819076f4faf6c2c2077e63f5e2e4af9ab2f76c50e2a9b04ae3f0a4dc5a716875c754b526e9205414489d925d0ea88108cf809c261c7b0c0389f45

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            428KB

            MD5

            de7f9d01e6bbba1b545945f929420665

            SHA1

            6fbdd64780c83932b47457fecb8c1c1b947edd12

            SHA256

            adc9b67d4b395ea77d04f116df8bb78ea01d0cca73c3942a5d19e61b987b90c6

            SHA512

            6e4df5975f7768778a3cab9238f0dff72c85b8f896afff14d29dfc01b0ef1a6fed94047a0284bd96cfa668752a17d340c4004d6554171c094cd9dfb5dd5a3e82

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            428KB

            MD5

            de7f9d01e6bbba1b545945f929420665

            SHA1

            6fbdd64780c83932b47457fecb8c1c1b947edd12

            SHA256

            adc9b67d4b395ea77d04f116df8bb78ea01d0cca73c3942a5d19e61b987b90c6

            SHA512

            6e4df5975f7768778a3cab9238f0dff72c85b8f896afff14d29dfc01b0ef1a6fed94047a0284bd96cfa668752a17d340c4004d6554171c094cd9dfb5dd5a3e82

          • \Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            a6628ba826e286f9c70a02e22fadbd70

            SHA1

            44c49d97b0f6532e84e26d3c79f041d5a4a44733

            SHA256

            63a5a435ef0b123b1835a81aaab79b3d2f23f5dca3cbb03285ec556966234bb4

            SHA512

            c029d34721ef845759f60a63fad533fd4803ae749e40d530b9808634308d8e951952712d5b614aeac2864e4b4ab11f1e72c8fd38cc415ab40aa4808b05019861

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            1176337c39220290ec5a0fbcf7f7eb0f

            SHA1

            4d24dc52b60dda5894990059ac090c537f584b34

            SHA256

            d13daaf777fd4f104707f4516bf460aada7c8fd4e1f08fbcac499a3a247b9b8f

            SHA512

            f84751da1a92dc5ef9c1a1e307d267e335998a87a4e64ff63af8795fed7502e98f50f2d674a9674eda4d18bb1428ec2f6c8f6487ccf3f6b852672afaeab32863

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            187KB

            MD5

            7734c86419f587ed020e813f270a37a3

            SHA1

            74152a27164bc1bca10aae6125fce63cab95a4a4

            SHA256

            32e94c0c8b62aeb53a40003a499eded4cad24ec13849888f3fcbae1a75ddd879

            SHA512

            7956d9f52755c6eeb6f91ea39f4a5502ab30f1140f2b026f0c2f7b5f3d354388892e8a075f4d1fc9842377a5546a9419e77e565c44f5bda028abd7e9fd9b82d7

          • memory/1508-54-0x0000000075451000-0x0000000075453000-memory.dmp

            Filesize

            8KB

          • memory/1508-91-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/1508-75-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/1508-55-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB