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Analysis

  • max time kernel
    150s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    30/10/2022, 05:23

General

  • Target

    c54917d0c61bbbf56fb53a698f45f13f8884f9391b357030a86775e49455385c.exe

  • Size

    288KB

  • MD5

    839b92b07934e02f8ffdc41aad980a79

  • SHA1

    a252419e6e78fa327e7dcae19dc7a75b094357d0

  • SHA256

    c54917d0c61bbbf56fb53a698f45f13f8884f9391b357030a86775e49455385c

  • SHA512

    976984fa798f4ac5cd41d197cc8ffd82f9c2105cb9abeda88ccb1474227d800f0fb1d11893d82e7c729cadb9175318c3df3c1dc301dc606bee0533ad9a8eecf6

  • SSDEEP

    3072:JvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6ungPKvLP:JvEN2U+T6i5LirrllHy4HUcMQY6lKLP

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Modifies Installed Components in the registry 2 TTPs 8 IoCs
  • Loads dropped DLL 8 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c54917d0c61bbbf56fb53a698f45f13f8884f9391b357030a86775e49455385c.exe
    "C:\Users\Admin\AppData\Local\Temp\c54917d0c61bbbf56fb53a698f45f13f8884f9391b357030a86775e49455385c.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1988
    • \??\c:\windows\system\explorer.exe
      c:\windows\system\explorer.exe
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Modifies Installed Components in the registry
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1120
      • \??\c:\windows\system\spoolsv.exe
        c:\windows\system\spoolsv.exe SE
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1292
        • \??\c:\windows\system\svchost.exe
          c:\windows\system\svchost.exe
          4⤵
          • Modifies WinLogon for persistence
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Modifies Installed Components in the registry
          • Loads dropped DLL
          • Adds Run key to start application
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1704
          • \??\c:\windows\system\spoolsv.exe
            c:\windows\system\spoolsv.exe PR
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:1808
          • C:\Windows\SysWOW64\at.exe
            at 17:00 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
            5⤵
              PID:728
            • C:\Windows\SysWOW64\at.exe
              at 17:01 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              5⤵
                PID:1924
              • C:\Windows\SysWOW64\at.exe
                at 17:02 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                5⤵
                  PID:1536

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\mrsys.exe

          Filesize

          287KB

          MD5

          d24d566b6f8a1ec7b182a7aa04f2e153

          SHA1

          0e40b334717f859b9323331e515246c550489490

          SHA256

          13263faffa8db2d0dbcdb2d744aadf69cb3b871274a55b9910ffff6c0b3e681f

          SHA512

          c11838c59c3f663db37830a3acde2b2b7a40eb3dbc813a1a700342c3ea985fb53b9daf3dec9c48bdc84a7a8cb8acb16afe462bd7e5fac1f6b2b8f9c0431d9947

        • C:\Windows\system\explorer.exe

          Filesize

          287KB

          MD5

          a723a1ed6ca62d9bdad16aed8560dbf1

          SHA1

          057471ca4fd42f2704d0cbfa58c4c027a5507a35

          SHA256

          3cb66096e9da958e97506b143b3459ba79de3cbf8a73abef86ccc720bfe55cc7

          SHA512

          792e4ec0c1f431b25087de82b544b198b3b78701406be2a558368bb0f293dd0bfac04d13990e024eae9ae9e8cdbca044afe23339fcef25f64cfd4462d61c95b8

        • C:\Windows\system\spoolsv.exe

          Filesize

          287KB

          MD5

          3644419746947bf43e72474a6819314c

          SHA1

          bdd563d0d94f1fd1fa33bdf0589c2f8873e29001

          SHA256

          ac1e7ffd82df7a2ff6bce16c226e9686620425ea54091f548bb004fd115d6790

          SHA512

          a3a0e9798cc8b679c479444df854a741974ec3df95059e50157c9593c317adc3350b1653a480059b81f426ec2835341b854fe23ff90da63bbda8b8ed782fdaa8

        • C:\Windows\system\spoolsv.exe

          Filesize

          287KB

          MD5

          3644419746947bf43e72474a6819314c

          SHA1

          bdd563d0d94f1fd1fa33bdf0589c2f8873e29001

          SHA256

          ac1e7ffd82df7a2ff6bce16c226e9686620425ea54091f548bb004fd115d6790

          SHA512

          a3a0e9798cc8b679c479444df854a741974ec3df95059e50157c9593c317adc3350b1653a480059b81f426ec2835341b854fe23ff90da63bbda8b8ed782fdaa8

        • C:\Windows\system\svchost.exe

          Filesize

          287KB

          MD5

          5cf3411189ef119f5391a1377d390981

          SHA1

          07ab0d4ff69ef4a2373cdbfd17485fbe46de2b1b

          SHA256

          eb715bfa26d2cfed53cc77525b5484e52480b3ac7cacddfefcd1a612d8218785

          SHA512

          ad3e1df49f510b735fd9c679c6eac08b4cded02f4df74abeb130bb565f164dc5f99d45dde6938f36bf7a72b41f8ab27bb0226122bebbedc587d474758d019f8e

        • \??\c:\windows\system\explorer.exe

          Filesize

          287KB

          MD5

          a723a1ed6ca62d9bdad16aed8560dbf1

          SHA1

          057471ca4fd42f2704d0cbfa58c4c027a5507a35

          SHA256

          3cb66096e9da958e97506b143b3459ba79de3cbf8a73abef86ccc720bfe55cc7

          SHA512

          792e4ec0c1f431b25087de82b544b198b3b78701406be2a558368bb0f293dd0bfac04d13990e024eae9ae9e8cdbca044afe23339fcef25f64cfd4462d61c95b8

        • \??\c:\windows\system\spoolsv.exe

          Filesize

          287KB

          MD5

          3644419746947bf43e72474a6819314c

          SHA1

          bdd563d0d94f1fd1fa33bdf0589c2f8873e29001

          SHA256

          ac1e7ffd82df7a2ff6bce16c226e9686620425ea54091f548bb004fd115d6790

          SHA512

          a3a0e9798cc8b679c479444df854a741974ec3df95059e50157c9593c317adc3350b1653a480059b81f426ec2835341b854fe23ff90da63bbda8b8ed782fdaa8

        • \??\c:\windows\system\svchost.exe

          Filesize

          287KB

          MD5

          5cf3411189ef119f5391a1377d390981

          SHA1

          07ab0d4ff69ef4a2373cdbfd17485fbe46de2b1b

          SHA256

          eb715bfa26d2cfed53cc77525b5484e52480b3ac7cacddfefcd1a612d8218785

          SHA512

          ad3e1df49f510b735fd9c679c6eac08b4cded02f4df74abeb130bb565f164dc5f99d45dde6938f36bf7a72b41f8ab27bb0226122bebbedc587d474758d019f8e

        • \Windows\system\explorer.exe

          Filesize

          287KB

          MD5

          a723a1ed6ca62d9bdad16aed8560dbf1

          SHA1

          057471ca4fd42f2704d0cbfa58c4c027a5507a35

          SHA256

          3cb66096e9da958e97506b143b3459ba79de3cbf8a73abef86ccc720bfe55cc7

          SHA512

          792e4ec0c1f431b25087de82b544b198b3b78701406be2a558368bb0f293dd0bfac04d13990e024eae9ae9e8cdbca044afe23339fcef25f64cfd4462d61c95b8

        • \Windows\system\explorer.exe

          Filesize

          287KB

          MD5

          a723a1ed6ca62d9bdad16aed8560dbf1

          SHA1

          057471ca4fd42f2704d0cbfa58c4c027a5507a35

          SHA256

          3cb66096e9da958e97506b143b3459ba79de3cbf8a73abef86ccc720bfe55cc7

          SHA512

          792e4ec0c1f431b25087de82b544b198b3b78701406be2a558368bb0f293dd0bfac04d13990e024eae9ae9e8cdbca044afe23339fcef25f64cfd4462d61c95b8

        • \Windows\system\spoolsv.exe

          Filesize

          287KB

          MD5

          3644419746947bf43e72474a6819314c

          SHA1

          bdd563d0d94f1fd1fa33bdf0589c2f8873e29001

          SHA256

          ac1e7ffd82df7a2ff6bce16c226e9686620425ea54091f548bb004fd115d6790

          SHA512

          a3a0e9798cc8b679c479444df854a741974ec3df95059e50157c9593c317adc3350b1653a480059b81f426ec2835341b854fe23ff90da63bbda8b8ed782fdaa8

        • \Windows\system\spoolsv.exe

          Filesize

          287KB

          MD5

          3644419746947bf43e72474a6819314c

          SHA1

          bdd563d0d94f1fd1fa33bdf0589c2f8873e29001

          SHA256

          ac1e7ffd82df7a2ff6bce16c226e9686620425ea54091f548bb004fd115d6790

          SHA512

          a3a0e9798cc8b679c479444df854a741974ec3df95059e50157c9593c317adc3350b1653a480059b81f426ec2835341b854fe23ff90da63bbda8b8ed782fdaa8

        • \Windows\system\spoolsv.exe

          Filesize

          287KB

          MD5

          3644419746947bf43e72474a6819314c

          SHA1

          bdd563d0d94f1fd1fa33bdf0589c2f8873e29001

          SHA256

          ac1e7ffd82df7a2ff6bce16c226e9686620425ea54091f548bb004fd115d6790

          SHA512

          a3a0e9798cc8b679c479444df854a741974ec3df95059e50157c9593c317adc3350b1653a480059b81f426ec2835341b854fe23ff90da63bbda8b8ed782fdaa8

        • \Windows\system\spoolsv.exe

          Filesize

          287KB

          MD5

          3644419746947bf43e72474a6819314c

          SHA1

          bdd563d0d94f1fd1fa33bdf0589c2f8873e29001

          SHA256

          ac1e7ffd82df7a2ff6bce16c226e9686620425ea54091f548bb004fd115d6790

          SHA512

          a3a0e9798cc8b679c479444df854a741974ec3df95059e50157c9593c317adc3350b1653a480059b81f426ec2835341b854fe23ff90da63bbda8b8ed782fdaa8

        • \Windows\system\svchost.exe

          Filesize

          287KB

          MD5

          5cf3411189ef119f5391a1377d390981

          SHA1

          07ab0d4ff69ef4a2373cdbfd17485fbe46de2b1b

          SHA256

          eb715bfa26d2cfed53cc77525b5484e52480b3ac7cacddfefcd1a612d8218785

          SHA512

          ad3e1df49f510b735fd9c679c6eac08b4cded02f4df74abeb130bb565f164dc5f99d45dde6938f36bf7a72b41f8ab27bb0226122bebbedc587d474758d019f8e

        • \Windows\system\svchost.exe

          Filesize

          287KB

          MD5

          5cf3411189ef119f5391a1377d390981

          SHA1

          07ab0d4ff69ef4a2373cdbfd17485fbe46de2b1b

          SHA256

          eb715bfa26d2cfed53cc77525b5484e52480b3ac7cacddfefcd1a612d8218785

          SHA512

          ad3e1df49f510b735fd9c679c6eac08b4cded02f4df74abeb130bb565f164dc5f99d45dde6938f36bf7a72b41f8ab27bb0226122bebbedc587d474758d019f8e

        • memory/1120-99-0x00000000025C0000-0x0000000002601000-memory.dmp

          Filesize

          260KB

        • memory/1120-106-0x0000000000400000-0x0000000000441000-memory.dmp

          Filesize

          260KB

        • memory/1120-98-0x0000000000400000-0x0000000000441000-memory.dmp

          Filesize

          260KB

        • memory/1292-93-0x0000000000400000-0x0000000000441000-memory.dmp

          Filesize

          260KB

        • memory/1704-100-0x0000000000400000-0x0000000000441000-memory.dmp

          Filesize

          260KB

        • memory/1808-92-0x0000000000400000-0x0000000000441000-memory.dmp

          Filesize

          260KB

        • memory/1988-57-0x0000000075D71000-0x0000000075D73000-memory.dmp

          Filesize

          8KB

        • memory/1988-94-0x0000000000400000-0x0000000000441000-memory.dmp

          Filesize

          260KB