Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    07-04-2023 01:02

General

  • Target

    MEMZ 3.0/MEMZ.bat

  • Size

    12KB

  • MD5

    13a43c26bb98449fd82d2a552877013a

  • SHA1

    71eb7dc393ac1f204488e11f5c1eef56f1e746af

  • SHA256

    5f52365accb76d679b2b3946870439a62eb8936b9a0595f0fb0198138106b513

  • SHA512

    602518b238d80010fa88c2c88699f70645513963ef4f148a0345675738cf9b0c23b9aeb899d9f7830cc1e5c7e9c7147b2dc4a9222770b4a052ee0c879062cd5a

  • SSDEEP

    384:nnLhRNiqt0kCH2LR0GPXxGiZgCz+KG/yKhLdW79HOli+lz3:nLhRN9t0SR4iZtzlREBWhuF

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 38 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Windows\system32\cscript.exe
      cscript x.js
      2⤵
      • Suspicious use of FindShellTrayWindow
      PID:748
    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      "C:\Users\Admin\AppData\Roaming\MEMZ.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: CmdExeWriteProcessMemorySpam
      • Suspicious use of WriteProcessMemory
      PID:840
      • C:\Users\Admin\AppData\Roaming\MEMZ.exe
        "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:700
      • C:\Users\Admin\AppData\Roaming\MEMZ.exe
        "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:1732
      • C:\Users\Admin\AppData\Roaming\MEMZ.exe
        "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:1096
      • C:\Users\Admin\AppData\Roaming\MEMZ.exe
        "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:1108
      • C:\Users\Admin\AppData\Roaming\MEMZ.exe
        "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /watchdog
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:524
      • C:\Users\Admin\AppData\Roaming\MEMZ.exe
        "C:\Users\Admin\AppData\Roaming\MEMZ.exe" /main
        3⤵
        • Executes dropped EXE
        • Writes to the Master Boot Record (MBR)
        • Suspicious use of WriteProcessMemory
        PID:1480
        • C:\Windows\SysWOW64\notepad.exe
          "C:\Windows\System32\notepad.exe" \note.txt
          4⤵
            PID:900
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe" https://google.co.ck/search?q=best+way+to+kill+yourself
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1792
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1792 CREDAT:275457 /prefetch:2
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:360
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x2fc
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:692

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Bootkit

    1
    T1067

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Query Registry

    1
    T1012

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
      Filesize

      61KB

      MD5

      e71c8443ae0bc2e282c73faead0a6dd3

      SHA1

      0c110c1b01e68edfacaeae64781a37b1995fa94b

      SHA256

      95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

      SHA512

      b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
      Filesize

      342B

      MD5

      a1a230df554b304da89ffa231bbb656b

      SHA1

      7ad7beaf6cb8a1051d2c36537e8b4fc31619432f

      SHA256

      7df708f3506c94b365c2fc761699f75ece8da2df1b94b7b11497a25b7e998b4b

      SHA512

      d1524cb606c76e5dabc48178c9d66783eb21da6577ee5e19a3344144657d11458e9810dbc5b3efb8a3341f9edb90fccdf57a0db8f0c3f02d6060e05b3bbe5bc2

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
      Filesize

      342B

      MD5

      27a14b6b9937288472cb12003db4ef8b

      SHA1

      76326bca61a364797d3b4199c0ceba954031dffa

      SHA256

      47b1056f5c34bcade50dda4a9f27ef5b2f29911d643b2f41727cba42a11872f0

      SHA512

      505c72d6d3f83c40ed2e2883ed1acd7f4f42b38f672ec53f5bb862354010efa1605b2a473093abfca26e3ca477f1363d909d0cc52b3b781b114ae2352dbd4b0e

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
      Filesize

      342B

      MD5

      27300eeaab7fa09c812002a1f31d3bc7

      SHA1

      595b23a152fb5688e088d75e516cd8c7535ba1f0

      SHA256

      1aae99631535f0fce6ea8f0c54b43dbd887aa0133cfdd1125087e7d8b1593f40

      SHA512

      8fd71d3be67d728757ffef9a49a7d1ab3fa19cd0a45768e3f4e3a12d6a0ec5c72f729077fedc7066c3e61ebed609c7033b0f6efbcdec98ca406f320db767c71d

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
      Filesize

      342B

      MD5

      856cce591177bc6a514799d48d35f288

      SHA1

      0f905f535591e4fc3950d1270d5f72c0bd22ad9b

      SHA256

      bebac0ea8e492235acb56dfa9220ccd6a4cbf37a9cd9be1037621626ca61a761

      SHA512

      1751235d6f3c6fdd451441391a2c39ea396dcd0ab8cd562ace7232a57cf28045a4bd55fa5935a813fe6817fba1d304f45c6bc437c8a5bd0a8d88ea61ad471a7b

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
      Filesize

      342B

      MD5

      2e464de09ad2c0207fe8fd5e31fda238

      SHA1

      a49cc46b5c8947ce7245fb0bb4cf688065c440b1

      SHA256

      5d30141230fec8de75d0b0a1368c5006b62816c0e6137a54892ef3054c9ad182

      SHA512

      5897c3baf225bf37aaf43424b6ecbeecfc8cd727944ee9707c02e45f725297c56101b83299869a524d987e9aae504447015d593ab2b558f6909d09e2be264168

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
      Filesize

      342B

      MD5

      4a77a819e0981c29fc0ab65814d4c389

      SHA1

      1f58685e6f664855c6795f9f7b9641d7550f8754

      SHA256

      5a319f61595b8a262d46ee76a05116f0e3aa34670b8979b6770053ad123e4cce

      SHA512

      8f6235a2c87608d52616a76047dc8c6ae4defdd67ab137aa8bd4affbd0d5bb7d652e4a77ee107d9690ee0c34328f1122ea0de5001167504f3f0002b283edf93a

    • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\07asiie\imagestore.dat
      Filesize

      9KB

      MD5

      a85c576c84890704e3ff62ab48b4c344

      SHA1

      08a7906669792f57e174eb112cf93b762a79c30a

      SHA256

      1fabb2dec2d1dd8288301b64aed13c3dcb2f649d3eb97f516d5a18efd12cc1c0

      SHA512

      8bf7eae308484e3df045e515e599d70044c1211c06f9177169396a33ab663158372a2dedb94b049670231cc95b77af49b57b9fc2877d579b6058aa6ba60800c4

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\T210ZMR0\favicon[2].ico
      Filesize

      5KB

      MD5

      f3418a443e7d841097c714d69ec4bcb8

      SHA1

      49263695f6b0cdd72f45cf1b775e660fdc36c606

      SHA256

      6da5620880159634213e197fafca1dde0272153be3e4590818533fab8d040770

      SHA512

      82d017c4b7ec8e0c46e8b75da0ca6a52fd8bce7fcf4e556cbdf16b49fc81be9953fe7e25a05f63ecd41c7272e8bb0a9fd9aedf0ac06cb6032330b096b3702563

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\TF0W5LQL\suggestions[1].en-US
      Filesize

      17KB

      MD5

      5a34cb996293fde2cb7a4ac89587393a

      SHA1

      3c96c993500690d1a77873cd62bc639b3a10653f

      SHA256

      c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

      SHA512

      e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    • C:\Users\Admin\AppData\Local\Temp\CabDAA9.tmp
      Filesize

      61KB

      MD5

      fc4666cbca561e864e7fdf883a9e6661

      SHA1

      2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

      SHA256

      10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

      SHA512

      c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\x
      Filesize

      4KB

      MD5

      b6873c6cbfc8482c7f0e2dcb77fb7f12

      SHA1

      844b14037e1f90973a04593785dc88dfca517673

      SHA256

      0a0cad82d9284ccc3c07de323b76ee2d1c0b328bd2ce59073ed5ac4eb7609bd1

      SHA512

      f3aa3d46d970db574113f40f489ff8a5f041606e79c4ab02301b283c66ff05732be4c5edc1cf4a851da9fbaaa2f296b97fc1135210966a0e2dfc3763398dfcaf

    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\x
      Filesize

      10KB

      MD5

      fc59b7d2eb1edbb9c8cb9eb08115a98e

      SHA1

      90a6479ce14f8548df54c434c0a524e25efd9d17

      SHA256

      a05b9be9dd87492f265094146e18d628744c6b09c0e7efaabf228a9f1091a279

      SHA512

      3392cfc0dbddb37932e76da5a49f4e010a49aaa863c882b85cccab676cd458cfc8f880d8a0e0dc7581175f447e6b0a002da1591ecd14756650bb74996eacd2b1

    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\x.js
      Filesize

      448B

      MD5

      8eec8704d2a7bc80b95b7460c06f4854

      SHA1

      1b34585c1fa7ec0bd0505478ac9dbb8b8d19f326

      SHA256

      aa01b8864b43e92077a106ed3d4656a511f3ba1910fba40c78a32ee6a621d596

      SHA512

      e274b92810e9a30627a65f87448d784967a2fcfbf49858cbe6ccb841f09e0f53fde253ecc1ea0c7de491d8cc56a6cf8c79d1b7c657e72928cfb0479d11035210

    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\z.zip
      Filesize

      7KB

      MD5

      cf0c19ef6909e5c1f10c8460ba9299d8

      SHA1

      875b575c124acfc1a4a21c1e05acb9690e50b880

      SHA256

      abb834ebd4b7d7f8ddf545976818f41b3cb51d2b895038a56457616d3a2c6776

      SHA512

      d930a022a373c283f35d103e277487c2034a0b0814913b8f6ec695b45e20528667aa830eeab58e4483d523bd6a755a16a5379095cb137db6c91909a545a19a2f

    • C:\Users\Admin\AppData\Local\Temp\MEMZ3~1.0\z.zip
      Filesize

      7KB

      MD5

      cf0c19ef6909e5c1f10c8460ba9299d8

      SHA1

      875b575c124acfc1a4a21c1e05acb9690e50b880

      SHA256

      abb834ebd4b7d7f8ddf545976818f41b3cb51d2b895038a56457616d3a2c6776

      SHA512

      d930a022a373c283f35d103e277487c2034a0b0814913b8f6ec695b45e20528667aa830eeab58e4483d523bd6a755a16a5379095cb137db6c91909a545a19a2f

    • C:\Users\Admin\AppData\Local\Temp\TarDAAA.tmp
      Filesize

      161KB

      MD5

      73b4b714b42fc9a6aaefd0ae59adb009

      SHA1

      efdaffd5b0ad21913d22001d91bf6c19ecb4ac41

      SHA256

      c0cf8cc04c34b5b80a2d86ad0eafb2dd71436f070c86b0321fba0201879625fd

      SHA512

      73af3c51b15f89237552b1718bef21fd80788fa416bab2cb2e7fb3a60d56249a716eda0d2dd68ab643752272640e7eaaaf57ce64bcb38373ddc3d035fb8d57cd

    • C:\Users\Admin\AppData\Local\Temp\TarDC27.tmp
      Filesize

      161KB

      MD5

      be2bec6e8c5653136d3e72fe53c98aa3

      SHA1

      a8182d6db17c14671c3d5766c72e58d87c0810de

      SHA256

      1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

      SHA512

      0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

    • C:\Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\KZE833WU.txt
      Filesize

      606B

      MD5

      0c714dda2a6c42393271ad80fc92c364

      SHA1

      8d67afa5e87af05cee5ecf0b541f7a5e8f5840be

      SHA256

      084ff56807c1dc4f0f9a24fb4bb3d7d39beef02f4f92f8be6d19d924430b94d0

      SHA512

      7e988f71414f89196e69c50388f21ed2eb24f5bb379a50a120a5d2127e0714093c72f8ab35d49a75ac89838e8bcbe580aba40680b93c4c62813cf93239bd300b

    • C:\note.txt
      Filesize

      218B

      MD5

      afa6955439b8d516721231029fb9ca1b

      SHA1

      087a043cc123c0c0df2ffadcf8e71e3ac86bbae9

      SHA256

      8e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270

      SHA512

      5da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf

    • \Users\Admin\AppData\Roaming\MEMZ.exe
      Filesize

      12KB

      MD5

      a7bcf7ea8e9f3f36ebfb85b823e39d91

      SHA1

      761168201520c199dba68add3a607922d8d4a86e

      SHA256

      3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

      SHA512

      89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523