Analysis

  • max time kernel
    152s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    01/10/2022, 22:47

General

  • Target

    RSMB4.12AEInstall.exe

  • Size

    14.3MB

  • MD5

    2a1ca30641bb63857167561c74d4ede1

  • SHA1

    6db195d73ddab13b9011b57681cc73d897526601

  • SHA256

    d4a0711c5944adade4bf93e86f5e5a02530fa69bf360acfd8a2e49e9fed61e80

  • SHA512

    a72246fe29d823619ebc2c723756578470d95abd8173171408829dcf12c418eb0469c799ab867bcc74f5d87a04d826b19d0f3145d80235b563d8779b22094c1a

  • SSDEEP

    393216:qnRufkopDyLHQkMeLEHksPInktCuGiRwVos4:qnRatWste4Esvjsos4

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 12 IoCs
  • Enumerates connected drives 3 TTPs 50 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 24 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RSMB4.12AEInstall.exe
    "C:\Users\Admin\AppData\Local\Temp\RSMB4.12AEInstall.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe
      "C:\Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe" /q:a
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:368
      • \??\c:\73ce4d65d05a24a25fb5f2a5\install.exe
        c:\73ce4d65d05a24a25fb5f2a5\.\install.exe /q:a
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of AdjustPrivilegeToken
        PID:524
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\~vis0000\RSMB4AEDel.bat" 0 0 1 1 1"
      2⤵
        PID:1268
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1472

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\73ce4d65d05a24a25fb5f2a5\install.exe

      Filesize

      547KB

      MD5

      4138c31964fbcb3b7418e086933324c3

      SHA1

      97cc6f58fb064ab6c4a2f02fb665fef77d30532f

      SHA256

      b72056fc3df6f46069294c243fe5006879bf4a9d8eef388369a590ca41745f29

      SHA512

      40cf2f35c3a944fca93d58d66465f0308197f5485381ff07d3065e0f59e94fc3834313068e4e5e5da395413ff2d3d1c3ff6fa050f2256e118972bf21a5643557

    • C:\Users\Admin\AppData\Local\Temp\dd_vcredistMSI3767.txt

      Filesize

      1KB

      MD5

      600db4896ae7494ca45ca47415017dbf

      SHA1

      7acaea558f047ba0a1f9e6b2e4157481f0bab89f

      SHA256

      f9703b26c63b807a5d6aedcc5a8e3d22b7d576eede12a74fa4553eb50bf1e08e

      SHA512

      abedd1f3dd88a1b200fddb117a44c8edb50d52da620df17496f99a2f2db1a2910cb47e5bc3ada4119e6690c0baf42ece405e64e86513b34836a8d4d86e2d1e39

    • C:\Users\Admin\AppData\Local\Temp\~vis0000\RSMB4AEDel.bat

      Filesize

      1KB

      MD5

      e3cbc1a2f6f60e99737cf15324e1d5c4

      SHA1

      ed853465d0456fcf32db128a2613df59a6243d99

      SHA256

      c8de65a6fb6c3950b7fd704e389cd94b8822f5b1112aae32cf00a8b1d078cdb5

      SHA512

      a670a50828ac8ffd0c5fdc5d1314a95a1f7e71703fb1fc6b6bce39d096a20262eda5a63a5b5108e71d9b24742684301b89f6001f0a479c16564a4c514cb8b533

    • C:\Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe

      Filesize

      4.3MB

      MD5

      35da2bf2befd998980a495b6f4f55e60

      SHA1

      470640aa4bb7db8e69196b5edb0010933569e98d

      SHA256

      6b3e4c51c6c0e5f68c8a72b497445af3dbf976394cbb62aa23569065c28deeb6

      SHA512

      bf630667c87b8f10ef85b61f2f379d7ce24124618b999babfec8e2df424eb494b8f1bf0977580810dff5124d4dbdec9539ff53e0dc14625c076fa34dfe44e3f2

    • C:\Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe

      Filesize

      4.3MB

      MD5

      35da2bf2befd998980a495b6f4f55e60

      SHA1

      470640aa4bb7db8e69196b5edb0010933569e98d

      SHA256

      6b3e4c51c6c0e5f68c8a72b497445af3dbf976394cbb62aa23569065c28deeb6

      SHA512

      bf630667c87b8f10ef85b61f2f379d7ce24124618b999babfec8e2df424eb494b8f1bf0977580810dff5124d4dbdec9539ff53e0dc14625c076fa34dfe44e3f2

    • \73ce4d65d05a24a25fb5f2a5\install.exe

      Filesize

      547KB

      MD5

      4138c31964fbcb3b7418e086933324c3

      SHA1

      97cc6f58fb064ab6c4a2f02fb665fef77d30532f

      SHA256

      b72056fc3df6f46069294c243fe5006879bf4a9d8eef388369a590ca41745f29

      SHA512

      40cf2f35c3a944fca93d58d66465f0308197f5485381ff07d3065e0f59e94fc3834313068e4e5e5da395413ff2d3d1c3ff6fa050f2256e118972bf21a5643557

    • \73ce4d65d05a24a25fb5f2a5\install.exe

      Filesize

      547KB

      MD5

      4138c31964fbcb3b7418e086933324c3

      SHA1

      97cc6f58fb064ab6c4a2f02fb665fef77d30532f

      SHA256

      b72056fc3df6f46069294c243fe5006879bf4a9d8eef388369a590ca41745f29

      SHA512

      40cf2f35c3a944fca93d58d66465f0308197f5485381ff07d3065e0f59e94fc3834313068e4e5e5da395413ff2d3d1c3ff6fa050f2256e118972bf21a5643557

    • \73ce4d65d05a24a25fb5f2a5\install.exe

      Filesize

      547KB

      MD5

      4138c31964fbcb3b7418e086933324c3

      SHA1

      97cc6f58fb064ab6c4a2f02fb665fef77d30532f

      SHA256

      b72056fc3df6f46069294c243fe5006879bf4a9d8eef388369a590ca41745f29

      SHA512

      40cf2f35c3a944fca93d58d66465f0308197f5485381ff07d3065e0f59e94fc3834313068e4e5e5da395413ff2d3d1c3ff6fa050f2256e118972bf21a5643557

    • \73ce4d65d05a24a25fb5f2a5\install.res.1033.dll

      Filesize

      85KB

      MD5

      ff6003014eefc9c30abe20e3e1f5fbe8

      SHA1

      4a5bd05f94545f01efc10232385b8fecad300678

      SHA256

      a522c5ea3250cdd538a9ce7b4a06dfd5123e7eb05eef67509f2b975a8e1d3067

      SHA512

      3adc5c705bab7fa7b50517a5eb3301491f5150b56e1088ed436590458e963da204cd1875af75db89742403476a56a94c3f425c05327767bdb4bbee4859667ac2

    • \??\c:\73ce4d65d05a24a25fb5f2a5\globdata.ini

      Filesize

      1KB

      MD5

      0a6b586fabd072bd7382b5e24194eac7

      SHA1

      60e3c7215c1a40fbfb3016d52c2de44592f8ca95

      SHA256

      7912e3fcf2698cf4f8625e563cd8215c6668739cae18bd6f27af2d25bec5c951

      SHA512

      b96b0448e9f0e94a7867b6bb103979e9ef2c0e074bcb85988d450d63de6edcf21dc83bb154aafb7de524af3c3734f0bb1ba649db0408612479322e1aa85be9f4

    • \??\c:\73ce4d65d05a24a25fb5f2a5\install.exe

      Filesize

      547KB

      MD5

      4138c31964fbcb3b7418e086933324c3

      SHA1

      97cc6f58fb064ab6c4a2f02fb665fef77d30532f

      SHA256

      b72056fc3df6f46069294c243fe5006879bf4a9d8eef388369a590ca41745f29

      SHA512

      40cf2f35c3a944fca93d58d66465f0308197f5485381ff07d3065e0f59e94fc3834313068e4e5e5da395413ff2d3d1c3ff6fa050f2256e118972bf21a5643557

    • \??\c:\73ce4d65d05a24a25fb5f2a5\install.ini

      Filesize

      841B

      MD5

      f8f6c0e030cb622f065fe47d61da91d7

      SHA1

      cf6fa99747de8f35c6aea52df234c9c57583baa3

      SHA256

      c16727881c47a40077dc5a1f1ea71cbb28e3f4e156c0ae7074c6d7f5ecece21d

      SHA512

      b70c6d67dac5e6a0dbd17e3bcf570a95914482abad20d0304c02da22231070b4bc887720dbae972bc5066457e1273b68fde0805f1c1791e9466a5ca343485cde

    • \??\c:\73ce4d65d05a24a25fb5f2a5\install.res.1033.dll

      Filesize

      85KB

      MD5

      ff6003014eefc9c30abe20e3e1f5fbe8

      SHA1

      4a5bd05f94545f01efc10232385b8fecad300678

      SHA256

      a522c5ea3250cdd538a9ce7b4a06dfd5123e7eb05eef67509f2b975a8e1d3067

      SHA512

      3adc5c705bab7fa7b50517a5eb3301491f5150b56e1088ed436590458e963da204cd1875af75db89742403476a56a94c3f425c05327767bdb4bbee4859667ac2

    • \??\c:\73ce4d65d05a24a25fb5f2a5\vc_red.cab

      Filesize

      3.7MB

      MD5

      0ee84ab717bc400c5e96c8d9d329fbb0

      SHA1

      be4ba7bbb068c7256b70f4fd7634eaeb2ad04d0a

      SHA256

      461d575bc1a07f64c14f1da885d2f310bd282cbbedcd0a5cf8ffa7057411805d

      SHA512

      4a6b0619f471a51df09fb6c1eff4ed166cdb7ef57f79ffdf709fa952a7c2a176c338084689c8ace1a94024a24579e9ee0ab6d411c25a1b42b0f517c57749d1a2

    • \??\c:\73ce4d65d05a24a25fb5f2a5\vc_red.msi

      Filesize

      222KB

      MD5

      7e641e6a0b456271745c20c3bb8a18f9

      SHA1

      ae6cedcb81dc443611a310140ae4671789dbbf3a

      SHA256

      34c5e7d7ea270ee67f92d34843d89603d6d3b6d9ef5247b43ae3c59c909d380d

      SHA512

      f67d6bf69d094edcc93541332f31b326131ff89672edb30fd349def6952ad8bfd07dc2f0ca5967b48a7589eee5b7a14b9a2c1ebe0cba4ae2324f7957090ea903

    • \Users\Admin\AppData\Local\Temp\~vis0000\RSMB4AEInstallCodeFrag.dll

      Filesize

      192KB

      MD5

      6200e71e6c7121c57992dbfabd1974fa

      SHA1

      18b63237638f85ea90ae4e26fdc1b8189a18e143

      SHA256

      8e20bcd7fa5a4286a4ed99afaca1703f32fb37dd263ff1ba1cedb88993568bbf

      SHA512

      0506f70734e619d4d4649e6dde71c5db1bb120f2d6033b7571b9d1629a740b3797b6b1e4245751715ad872598bdbb669cff3112f3b2dcadbc4cd8f267bc44ca0

    • \Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe

      Filesize

      4.3MB

      MD5

      35da2bf2befd998980a495b6f4f55e60

      SHA1

      470640aa4bb7db8e69196b5edb0010933569e98d

      SHA256

      6b3e4c51c6c0e5f68c8a72b497445af3dbf976394cbb62aa23569065c28deeb6

      SHA512

      bf630667c87b8f10ef85b61f2f379d7ce24124618b999babfec8e2df424eb494b8f1bf0977580810dff5124d4dbdec9539ff53e0dc14625c076fa34dfe44e3f2

    • \Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe

      Filesize

      4.3MB

      MD5

      35da2bf2befd998980a495b6f4f55e60

      SHA1

      470640aa4bb7db8e69196b5edb0010933569e98d

      SHA256

      6b3e4c51c6c0e5f68c8a72b497445af3dbf976394cbb62aa23569065c28deeb6

      SHA512

      bf630667c87b8f10ef85b61f2f379d7ce24124618b999babfec8e2df424eb494b8f1bf0977580810dff5124d4dbdec9539ff53e0dc14625c076fa34dfe44e3f2

    • \Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe

      Filesize

      4.3MB

      MD5

      35da2bf2befd998980a495b6f4f55e60

      SHA1

      470640aa4bb7db8e69196b5edb0010933569e98d

      SHA256

      6b3e4c51c6c0e5f68c8a72b497445af3dbf976394cbb62aa23569065c28deeb6

      SHA512

      bf630667c87b8f10ef85b61f2f379d7ce24124618b999babfec8e2df424eb494b8f1bf0977580810dff5124d4dbdec9539ff53e0dc14625c076fa34dfe44e3f2

    • \Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe

      Filesize

      4.3MB

      MD5

      35da2bf2befd998980a495b6f4f55e60

      SHA1

      470640aa4bb7db8e69196b5edb0010933569e98d

      SHA256

      6b3e4c51c6c0e5f68c8a72b497445af3dbf976394cbb62aa23569065c28deeb6

      SHA512

      bf630667c87b8f10ef85b61f2f379d7ce24124618b999babfec8e2df424eb494b8f1bf0977580810dff5124d4dbdec9539ff53e0dc14625c076fa34dfe44e3f2

    • \Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe

      Filesize

      4.3MB

      MD5

      35da2bf2befd998980a495b6f4f55e60

      SHA1

      470640aa4bb7db8e69196b5edb0010933569e98d

      SHA256

      6b3e4c51c6c0e5f68c8a72b497445af3dbf976394cbb62aa23569065c28deeb6

      SHA512

      bf630667c87b8f10ef85b61f2f379d7ce24124618b999babfec8e2df424eb494b8f1bf0977580810dff5124d4dbdec9539ff53e0dc14625c076fa34dfe44e3f2

    • \Users\Admin\AppData\Local\Temp\~vis0000\vcredist_x86.exe

      Filesize

      4.3MB

      MD5

      35da2bf2befd998980a495b6f4f55e60

      SHA1

      470640aa4bb7db8e69196b5edb0010933569e98d

      SHA256

      6b3e4c51c6c0e5f68c8a72b497445af3dbf976394cbb62aa23569065c28deeb6

      SHA512

      bf630667c87b8f10ef85b61f2f379d7ce24124618b999babfec8e2df424eb494b8f1bf0977580810dff5124d4dbdec9539ff53e0dc14625c076fa34dfe44e3f2

    • \Users\Admin\AppData\Local\Temp\~vis0000\vise32ex.dll

      Filesize

      528KB

      MD5

      343eefb0f0136a8250e0c7a0430b1ad9

      SHA1

      28968d3fdb8c83d3f2401127c69d3c761905b0bd

      SHA256

      0b42a3ac9b95f0a66ded56cb2184537eda96cc9c949f56b9a19acdda935a69e6

      SHA512

      d10621a4314f2b15cc41a64c19cbcd8168675744e9f14a25fbbf90897e72105c66602f78e1e2429ef3fde6615258d3ce46e962c4def3998d3185e3502602ba0e

    • memory/1472-78-0x000007FEFC2F1000-0x000007FEFC2F3000-memory.dmp

      Filesize

      8KB

    • memory/2032-54-0x0000000075A71000-0x0000000075A73000-memory.dmp

      Filesize

      8KB

    • memory/2032-82-0x00000000024D1000-0x00000000024EF000-memory.dmp

      Filesize

      120KB

    • memory/2032-83-0x00000000024D0000-0x0000000002507000-memory.dmp

      Filesize

      220KB