Analysis

  • max time kernel
    45s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:29

General

  • Target

    3478cea3c8b253935241fe7c23b1af353ad050d294db50b46a6c748c685b9915.exe

  • Size

    603KB

  • MD5

    bf6fbcea7e8fc09a231bdbcf10a0036c

  • SHA1

    d3352c36d2201688431fcf37522d6c28b83cc326

  • SHA256

    3478cea3c8b253935241fe7c23b1af353ad050d294db50b46a6c748c685b9915

  • SHA512

    c5cf6b0abf1df237420d718f166d7f6c8a152cf3d00050c524f61a847107cbdc682410a327ca1ddfb744248453a55d0058e02b87ab98964ed15f96f8fc4deba9

  • SSDEEP

    12288:JIny5DYTmIscRm+YLBSXj8H3EOwdwgq8tEVh8KBgWlhJcoyrjyP/Fp:lUTmrIaSXQH3E3dM8aTKWRcbk

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\3478cea3c8b253935241fe7c23b1af353ad050d294db50b46a6c748c685b9915.exe
    "C:\Users\Admin\AppData\Local\Temp\3478cea3c8b253935241fe7c23b1af353ad050d294db50b46a6c748c685b9915.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:948
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1292
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:564
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1724
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1088
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:268
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1784
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2008
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1732
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1764
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1288
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1276
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1084
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1488

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0b22e0bc6a6e2046911742b924223061

            SHA1

            37e6d1ffa9bd18adf37dfbba1301dd46137bcc67

            SHA256

            de8c56eb79e4efcf8c5f63168d130e09f84b465588b0386f13591f5238ae149d

            SHA512

            383b685061d6b5533d92f77e01565c8712460d76765c744268bf9ae92199d35adee227a402cc2b169cb1ee3d1b065059460c952bcbc813682b64365d7a4f8607

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            9e3e4e5e17739d8492f8296c19d8b1fa

            SHA1

            bafc47a649f1ca8c157648f742067aeb7fb07b98

            SHA256

            ddb9c61d6f3dc3e1541390cb07eded4fa0e2cd66f8b90b6d31982faff19b1b2e

            SHA512

            aabaf1a5c2cc7c5379da60ae466f73b3b573c59231d7ba1e4f655c0d5d9dfe7b71da1c10aa5d3cb1828efa2471fc65473cb3699441b7e01b08fab00359cd6ddc

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            35845497cc921ee2f59236d12133c5cd

            SHA1

            5ee4de110aa1b8d2c51b977daa055197e992a946

            SHA256

            482382b5c52b16ecddf37955c0c710390c082aff95a089b32395795b70ff633a

            SHA512

            4418d4598fe2dab747f5a237d6ca1c69bcf9235dc90a6309ad1cc530e980aeee10d179a5787b548ca28a4d3de940ba4e39135775a1b20a8d1c211e8833cb9e8a

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            82b9fb57982ec61430d34071818c2fbb

            SHA1

            8fe4b879be28b898da13a1bc0273a0fdf65c7e42

            SHA256

            c64f600ced66ae60b1c06f0baa77902aae494aefdf552f6d5a1ccba9a5dd3e7d

            SHA512

            4e2f294fc99121f27df43be636dfaecd99786e0d01294bd56231e97b4b4e8ce5d412a502269da4f4c25ee811fd47defafe6e7e7b425e8844bc2bde5b2b9cc576

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            82b9fb57982ec61430d34071818c2fbb

            SHA1

            8fe4b879be28b898da13a1bc0273a0fdf65c7e42

            SHA256

            c64f600ced66ae60b1c06f0baa77902aae494aefdf552f6d5a1ccba9a5dd3e7d

            SHA512

            4e2f294fc99121f27df43be636dfaecd99786e0d01294bd56231e97b4b4e8ce5d412a502269da4f4c25ee811fd47defafe6e7e7b425e8844bc2bde5b2b9cc576

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            36fa381fe6a2a992395ee34248603d2c

            SHA1

            b7c4c02469a0b8685dfe88daed3a1b5004915722

            SHA256

            aa83f3671e35446621b7cc2bc8958f5433ea40c2cb1af77f1da8d2da327b065e

            SHA512

            4df53ffb6383c2f847e996d91e5ce8552f2593cf733a2e05f4920786e024943b0cf8cb123c9b56eae9a13453cb559a6590f63df376f216be9feeec3207e2f10c

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            36fa381fe6a2a992395ee34248603d2c

            SHA1

            b7c4c02469a0b8685dfe88daed3a1b5004915722

            SHA256

            aa83f3671e35446621b7cc2bc8958f5433ea40c2cb1af77f1da8d2da327b065e

            SHA512

            4df53ffb6383c2f847e996d91e5ce8552f2593cf733a2e05f4920786e024943b0cf8cb123c9b56eae9a13453cb559a6590f63df376f216be9feeec3207e2f10c

          • \Users\Admin\AppData\Local\Temp\nstA67F.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstA67F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstA67F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstA67F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstA67F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0b22e0bc6a6e2046911742b924223061

            SHA1

            37e6d1ffa9bd18adf37dfbba1301dd46137bcc67

            SHA256

            de8c56eb79e4efcf8c5f63168d130e09f84b465588b0386f13591f5238ae149d

            SHA512

            383b685061d6b5533d92f77e01565c8712460d76765c744268bf9ae92199d35adee227a402cc2b169cb1ee3d1b065059460c952bcbc813682b64365d7a4f8607

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0b22e0bc6a6e2046911742b924223061

            SHA1

            37e6d1ffa9bd18adf37dfbba1301dd46137bcc67

            SHA256

            de8c56eb79e4efcf8c5f63168d130e09f84b465588b0386f13591f5238ae149d

            SHA512

            383b685061d6b5533d92f77e01565c8712460d76765c744268bf9ae92199d35adee227a402cc2b169cb1ee3d1b065059460c952bcbc813682b64365d7a4f8607

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0b22e0bc6a6e2046911742b924223061

            SHA1

            37e6d1ffa9bd18adf37dfbba1301dd46137bcc67

            SHA256

            de8c56eb79e4efcf8c5f63168d130e09f84b465588b0386f13591f5238ae149d

            SHA512

            383b685061d6b5533d92f77e01565c8712460d76765c744268bf9ae92199d35adee227a402cc2b169cb1ee3d1b065059460c952bcbc813682b64365d7a4f8607

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            9e3e4e5e17739d8492f8296c19d8b1fa

            SHA1

            bafc47a649f1ca8c157648f742067aeb7fb07b98

            SHA256

            ddb9c61d6f3dc3e1541390cb07eded4fa0e2cd66f8b90b6d31982faff19b1b2e

            SHA512

            aabaf1a5c2cc7c5379da60ae466f73b3b573c59231d7ba1e4f655c0d5d9dfe7b71da1c10aa5d3cb1828efa2471fc65473cb3699441b7e01b08fab00359cd6ddc

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            9e3e4e5e17739d8492f8296c19d8b1fa

            SHA1

            bafc47a649f1ca8c157648f742067aeb7fb07b98

            SHA256

            ddb9c61d6f3dc3e1541390cb07eded4fa0e2cd66f8b90b6d31982faff19b1b2e

            SHA512

            aabaf1a5c2cc7c5379da60ae466f73b3b573c59231d7ba1e4f655c0d5d9dfe7b71da1c10aa5d3cb1828efa2471fc65473cb3699441b7e01b08fab00359cd6ddc

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            35845497cc921ee2f59236d12133c5cd

            SHA1

            5ee4de110aa1b8d2c51b977daa055197e992a946

            SHA256

            482382b5c52b16ecddf37955c0c710390c082aff95a089b32395795b70ff633a

            SHA512

            4418d4598fe2dab747f5a237d6ca1c69bcf9235dc90a6309ad1cc530e980aeee10d179a5787b548ca28a4d3de940ba4e39135775a1b20a8d1c211e8833cb9e8a

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            82b9fb57982ec61430d34071818c2fbb

            SHA1

            8fe4b879be28b898da13a1bc0273a0fdf65c7e42

            SHA256

            c64f600ced66ae60b1c06f0baa77902aae494aefdf552f6d5a1ccba9a5dd3e7d

            SHA512

            4e2f294fc99121f27df43be636dfaecd99786e0d01294bd56231e97b4b4e8ce5d412a502269da4f4c25ee811fd47defafe6e7e7b425e8844bc2bde5b2b9cc576

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            36fa381fe6a2a992395ee34248603d2c

            SHA1

            b7c4c02469a0b8685dfe88daed3a1b5004915722

            SHA256

            aa83f3671e35446621b7cc2bc8958f5433ea40c2cb1af77f1da8d2da327b065e

            SHA512

            4df53ffb6383c2f847e996d91e5ce8552f2593cf733a2e05f4920786e024943b0cf8cb123c9b56eae9a13453cb559a6590f63df376f216be9feeec3207e2f10c

          • memory/268-64-0x0000000000000000-mapping.dmp
          • memory/564-58-0x0000000000000000-mapping.dmp
          • memory/948-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/948-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/948-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/948-54-0x0000000075D01000-0x0000000075D03000-memory.dmp
            Filesize

            8KB

          • memory/1088-62-0x0000000000000000-mapping.dmp
          • memory/1276-88-0x0000000000000000-mapping.dmp
          • memory/1288-87-0x0000000000000000-mapping.dmp
          • memory/1292-57-0x0000000000000000-mapping.dmp
          • memory/1724-61-0x0000000000000000-mapping.dmp
          • memory/1732-81-0x0000000000000000-mapping.dmp
          • memory/1764-82-0x0000000000000000-mapping.dmp
          • memory/1784-71-0x0000000000000000-mapping.dmp
          • memory/2008-77-0x0000000000000000-mapping.dmp