Analysis

  • max time kernel
    46s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24/11/2022, 06:15

General

  • Target

    48c324200a261f42f1e5abd86a58702f345f965769f3f7ddae31aac82e5e7700.exe

  • Size

    446KB

  • MD5

    b55c2a0ef7a5123d8f32ecd8238ef7ac

  • SHA1

    c3b6ac2aa0b5a9c4f0a92f4128c5b9c663bb5569

  • SHA256

    48c324200a261f42f1e5abd86a58702f345f965769f3f7ddae31aac82e5e7700

  • SHA512

    76d7b48916f4fba3e9cc0aa83568f09913dfce70b355d628dcda3cc0053364d8db326a97e15d3eebcb7947313c34df3d94d9de65e3cd7222cae736042c7c802f

  • SSDEEP

    12288:rwsZX+F1ZNigiwUs2ziQ2JjQn0V+eR5Qx/:rpOf/igiwl9jg0geRax/

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\48c324200a261f42f1e5abd86a58702f345f965769f3f7ddae31aac82e5e7700.exe
    "C:\Users\Admin\AppData\Local\Temp\48c324200a261f42f1e5abd86a58702f345f965769f3f7ddae31aac82e5e7700.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:1748
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1232
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1624
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1736
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1816
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1496
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1648
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1132
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:888
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1356
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1884
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1156
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1124
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1444

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  5076c77af20542bf786805943550227e

                  SHA1

                  61d9957d66d1e6b592088bdec2bef65ee17ace34

                  SHA256

                  d690469f0d10f27b112cbdc5a27cfb96cc9328af6b30f6b79f6ef8380adaa87a

                  SHA512

                  be965b136934b570d1838e3bce2d90f94e52fb21d2da37eabef2b73d2073d772875a9c2978f3a47a15a78ea88f0c1695134f32e9753825042fc7b53f3ce7291e

                • C:\Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  4036c427d7c2d30386162c0d7d924007

                  SHA1

                  b6babd96f9bad2eb89e49f2f356517a56a6cc1cb

                  SHA256

                  f4515871dd8e830bee5edeffe85b6c3b5175b1ebdf20ca21bab617e4db000663

                  SHA512

                  e87ce46f3d0c00827cd9ed6fc453aabaf6d0ff81f67459b280f64b2e3683dc6012ed66210d082c3d2725e11ebbd24092e1410942d12c84b948a4da2e725a8b23

                • C:\Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  3b4b3cda69f092ab352a48793fcdc403

                  SHA1

                  82361d916ffb82f2808de4e3df1f0c76b6e04f6b

                  SHA256

                  08a8deae914522add91263349f8189a9b4de94b20588af9c9d1a3c98076217e9

                  SHA512

                  408881866c6d4613d0b6e17c7879bcb3f4a22cb4283f38d6b1105dd8a24ebb5cd6bbb2323d3c1697fa325060bd2d74d8fdab691d20524944d398eeebf8cac6e6

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  f86ab55d30b7eb43a32ce83179d0cb1f

                  SHA1

                  217bb9f1ed15dddd93b4888cc982326595046e9f

                  SHA256

                  9399f0f49b17aac351fa630b950d07d563b5689d8d3bbc4afa77f1cf667e465e

                  SHA512

                  278baa2b286d466fffeeb65986a7c6e2752938a6f82b21505fad88c9e3ef54217e9451cbdf37138686c59cabba08c530b09198c78e369d24daba3ac7905daeb0

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  f86ab55d30b7eb43a32ce83179d0cb1f

                  SHA1

                  217bb9f1ed15dddd93b4888cc982326595046e9f

                  SHA256

                  9399f0f49b17aac351fa630b950d07d563b5689d8d3bbc4afa77f1cf667e465e

                  SHA512

                  278baa2b286d466fffeeb65986a7c6e2752938a6f82b21505fad88c9e3ef54217e9451cbdf37138686c59cabba08c530b09198c78e369d24daba3ac7905daeb0

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  bbd61f570fdf025de5d9f6da5f077f5c

                  SHA1

                  04f2e46946d064f35859743f815f37a3e939ec94

                  SHA256

                  c4ceb5d6f33847c1a1180269c5b3536affa16423f750002830a383fb0bffae72

                  SHA512

                  d312113e1cae098a105c3aac0823e5dd8fe9eaf34d827bd5858efeb9a5a5d7a931e6aedbef3ac292288747b9e0d3393fcdaee6e401ec641866bd47af058b4609

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  bbd61f570fdf025de5d9f6da5f077f5c

                  SHA1

                  04f2e46946d064f35859743f815f37a3e939ec94

                  SHA256

                  c4ceb5d6f33847c1a1180269c5b3536affa16423f750002830a383fb0bffae72

                  SHA512

                  d312113e1cae098a105c3aac0823e5dd8fe9eaf34d827bd5858efeb9a5a5d7a931e6aedbef3ac292288747b9e0d3393fcdaee6e401ec641866bd47af058b4609

                • \Users\Admin\AppData\Local\Temp\nstB2AF.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • \Users\Admin\AppData\Local\Temp\nstB2AF.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nstB2AF.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nstB2AF.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nstB2AF.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  5076c77af20542bf786805943550227e

                  SHA1

                  61d9957d66d1e6b592088bdec2bef65ee17ace34

                  SHA256

                  d690469f0d10f27b112cbdc5a27cfb96cc9328af6b30f6b79f6ef8380adaa87a

                  SHA512

                  be965b136934b570d1838e3bce2d90f94e52fb21d2da37eabef2b73d2073d772875a9c2978f3a47a15a78ea88f0c1695134f32e9753825042fc7b53f3ce7291e

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  5076c77af20542bf786805943550227e

                  SHA1

                  61d9957d66d1e6b592088bdec2bef65ee17ace34

                  SHA256

                  d690469f0d10f27b112cbdc5a27cfb96cc9328af6b30f6b79f6ef8380adaa87a

                  SHA512

                  be965b136934b570d1838e3bce2d90f94e52fb21d2da37eabef2b73d2073d772875a9c2978f3a47a15a78ea88f0c1695134f32e9753825042fc7b53f3ce7291e

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  5076c77af20542bf786805943550227e

                  SHA1

                  61d9957d66d1e6b592088bdec2bef65ee17ace34

                  SHA256

                  d690469f0d10f27b112cbdc5a27cfb96cc9328af6b30f6b79f6ef8380adaa87a

                  SHA512

                  be965b136934b570d1838e3bce2d90f94e52fb21d2da37eabef2b73d2073d772875a9c2978f3a47a15a78ea88f0c1695134f32e9753825042fc7b53f3ce7291e

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  4036c427d7c2d30386162c0d7d924007

                  SHA1

                  b6babd96f9bad2eb89e49f2f356517a56a6cc1cb

                  SHA256

                  f4515871dd8e830bee5edeffe85b6c3b5175b1ebdf20ca21bab617e4db000663

                  SHA512

                  e87ce46f3d0c00827cd9ed6fc453aabaf6d0ff81f67459b280f64b2e3683dc6012ed66210d082c3d2725e11ebbd24092e1410942d12c84b948a4da2e725a8b23

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  4036c427d7c2d30386162c0d7d924007

                  SHA1

                  b6babd96f9bad2eb89e49f2f356517a56a6cc1cb

                  SHA256

                  f4515871dd8e830bee5edeffe85b6c3b5175b1ebdf20ca21bab617e4db000663

                  SHA512

                  e87ce46f3d0c00827cd9ed6fc453aabaf6d0ff81f67459b280f64b2e3683dc6012ed66210d082c3d2725e11ebbd24092e1410942d12c84b948a4da2e725a8b23

                • \Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  3b4b3cda69f092ab352a48793fcdc403

                  SHA1

                  82361d916ffb82f2808de4e3df1f0c76b6e04f6b

                  SHA256

                  08a8deae914522add91263349f8189a9b4de94b20588af9c9d1a3c98076217e9

                  SHA512

                  408881866c6d4613d0b6e17c7879bcb3f4a22cb4283f38d6b1105dd8a24ebb5cd6bbb2323d3c1697fa325060bd2d74d8fdab691d20524944d398eeebf8cac6e6

                • \Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  f86ab55d30b7eb43a32ce83179d0cb1f

                  SHA1

                  217bb9f1ed15dddd93b4888cc982326595046e9f

                  SHA256

                  9399f0f49b17aac351fa630b950d07d563b5689d8d3bbc4afa77f1cf667e465e

                  SHA512

                  278baa2b286d466fffeeb65986a7c6e2752938a6f82b21505fad88c9e3ef54217e9451cbdf37138686c59cabba08c530b09198c78e369d24daba3ac7905daeb0

                • \Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  bbd61f570fdf025de5d9f6da5f077f5c

                  SHA1

                  04f2e46946d064f35859743f815f37a3e939ec94

                  SHA256

                  c4ceb5d6f33847c1a1180269c5b3536affa16423f750002830a383fb0bffae72

                  SHA512

                  d312113e1cae098a105c3aac0823e5dd8fe9eaf34d827bd5858efeb9a5a5d7a931e6aedbef3ac292288747b9e0d3393fcdaee6e401ec641866bd47af058b4609

                • memory/1748-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

                  Filesize

                  8KB