Analysis

  • max time kernel
    104s
  • max time network
    101s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    30/01/2023, 11:07

General

  • Target

    secureclientinstaller.msi

  • Size

    163.3MB

  • MD5

    87e7420a226540b442e1e9005633cf08

  • SHA1

    1f79f0522cc0fd2d7e29e2da8bb4b577c34f015f

  • SHA256

    c6fb5cce89b8af5c6c8cad24b421c69f58ac64b3f93944c81108a7de06d09635

  • SHA512

    424794c7184f1e3b398dfb55a6b61b524de56511c27f4fb6141b978eefbf0d50c03f13950a682e3570ed1d3a25bdbd371a5138c4140370c20b18be282b8aab19

  • SSDEEP

    3145728:Uybah/qezBAi/Y2Twczv0H9nSkxwceFd9Sgn8N1IHrKkU+hKSRGWku:Xy/Dyi/fsczOxSYiFd9Sg8jKCqKSR3ku

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

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

  • Drops autorun.inf file 1 TTPs 2 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Windows directory 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 43 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\secureclientinstaller.msi
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1208
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1360
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 53C7DD12E156DBFCA7C02724711549B7
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Users\Admin\AppData\Local\Temp\{DE740379-FA3B-4136-A089-A0E2074E6D31}.exe
        "C:\Users\Admin\AppData\Local\Temp\{DE740379-FA3B-4136-A089-A0E2074E6D31}.exe" "/g=C:\Users\Admin\AppData\Local\Temp\" ALLUSERS=FALSE
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops autorun.inf file
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:1748
        • C:\Users\Admin\AppData\Local\Temp\miaC3DC.tmp\SurpassClient.exe
          .\SurpassClient.exe "/g=C:\Users\Admin\AppData\Local\Temp\" ALLUSERS=FALSE /m="C:\Users\Admin\AppData\Local\Temp\{DE740~1.EXE" /k=""
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Modifies registry class
          • Suspicious use of FindShellTrayWindow
          PID:540
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1732
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000578" "0000000000000060"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:1148

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

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

    Filesize

    342B

    MD5

    eb19fc2702c6a90bf32fd1137593cc33

    SHA1

    701d97904612382a278e3279da1e9b959ea3a057

    SHA256

    9606a67570fa7c76d20328b8ba53e8ebcdb52436482d6ce1b810e28070b1ad9b

    SHA512

    60437a8c0428f6876665bd07932e79e3417d45f31f6f324c818bf742dda9b729e40a90c671ca1c4a2b274ab0baf74d1008aaafba0d2ce64f5867f06af672a84c

  • C:\Users\Admin\AppData\Local\Temp\miaC3DC.tmp\SurpassClient.exe

    Filesize

    4.4MB

    MD5

    819b99310c7ca28651c9a2185452843a

    SHA1

    2a1dbf6650ed587af8248e49c29e925cfc9e04af

    SHA256

    7373930b0f4bf1e7ef0ac07bae1812d839f192fd27f3e2e3fc0a95387090221a

    SHA512

    3a425ed92a4259ec3b035d2a5073202a94b3de56ccf233b2c36435bbbd06ec3704f7b053055f90b515467beeb3189c48f001048c70759472f0786e4a57aaa494

  • C:\Users\Admin\AppData\Local\Temp\miaC3DC.tmp\SurpassClient.exe

    Filesize

    4.4MB

    MD5

    819b99310c7ca28651c9a2185452843a

    SHA1

    2a1dbf6650ed587af8248e49c29e925cfc9e04af

    SHA256

    7373930b0f4bf1e7ef0ac07bae1812d839f192fd27f3e2e3fc0a95387090221a

    SHA512

    3a425ed92a4259ec3b035d2a5073202a94b3de56ccf233b2c36435bbbd06ec3704f7b053055f90b515467beeb3189c48f001048c70759472f0786e4a57aaa494

  • C:\Users\Admin\AppData\Local\Temp\miaC3DC.tmp\SurpassClient.msi

    Filesize

    820KB

    MD5

    1c2ae57713db4671c331ab9e9dcfbe86

    SHA1

    b45644ee12819146728a8671b65f867ecb99c9b7

    SHA256

    91c8b5563d24e3c385114548a3fa5946877e1530550ff689ff581ef67b141dae

    SHA512

    cd82566d64f792de861e8e6872e14964cc406615fb4af0eea68eb1679e749da1fbefff852d05909e2ea65cb20d05fc5fc36b0fb0202b1ceb43be7782cea24098

  • C:\Users\Admin\AppData\Local\Temp\miaC3DC.tmp\SurpassClient.res

    Filesize

    9.4MB

    MD5

    b99200d97df9cb051d978886ccf1b9fe

    SHA1

    8686e326ccf2ac5ddea41c617a130bb16e37393e

    SHA256

    5dbce1bbd70bfdaf46c5563357dda9d854471b946bfa9ce9beec8a80d60cb0fe

    SHA512

    cb9ecccf8544711bd114e99c802d920be4e6f8ff61ce35a9ac8f255919a0f671a68e871719c4f6b822d86d520feba55f7ec6fcef54fffd1da5f0b33cc96efbf9

  • C:\Users\Admin\AppData\Local\Temp\miaC3DC.tmp\mia.lib

    Filesize

    569KB

    MD5

    b21a697f173642fb9635fe6f84c56d33

    SHA1

    a8cb355623f088f8743cc0ee392539e09bef10c1

    SHA256

    6f037e0c92f16c28c483d3ba040e18756d2d229db4c3394c7ba5a9ba033bf802

    SHA512

    3c4c15f0a59561bcde5f4203e4adeda2c63aff31530de481cbcd5d4fb8711db9cb4427191fab988b1162393bf68827b59c84e0e8b93e70c6d2403f32d31fe0c3

  • C:\Users\Admin\AppData\Local\Temp\{DE740379-FA3B-4136-A089-A0E2074E6D31}.exe

    Filesize

    161.6MB

    MD5

    102a15c650ab7934928cd2365afef538

    SHA1

    309a3ad4983adf40558fcbc257ef280511abe5f9

    SHA256

    da6032fdf29ecb28c12ff4f8eddb6137a890bae3cf2681f73fb28d2b64d4cdf1

    SHA512

    a45c73b4d4824a5244514f9ba7893b41d86603548685e74a1ab822f3e95abb901fe7945e2da334159b807b4f42c97bf51f6577085fc985ecd089d37f0462c6d0

  • C:\Users\Admin\AppData\Local\Temp\{DE740379-FA3B-4136-A089-A0E2074E6D31}.exe

    Filesize

    161.6MB

    MD5

    102a15c650ab7934928cd2365afef538

    SHA1

    309a3ad4983adf40558fcbc257ef280511abe5f9

    SHA256

    da6032fdf29ecb28c12ff4f8eddb6137a890bae3cf2681f73fb28d2b64d4cdf1

    SHA512

    a45c73b4d4824a5244514f9ba7893b41d86603548685e74a1ab822f3e95abb901fe7945e2da334159b807b4f42c97bf51f6577085fc985ecd089d37f0462c6d0

  • C:\Windows\Installer\MSI97EC.tmp

    Filesize

    391KB

    MD5

    66ec5097c09cc3c2f95d4f6b40d5c1a9

    SHA1

    2b22f3be1d328bef52e0ff4feb47b84468cebce7

    SHA256

    b205553fd808cd53410677b08e1ead0ba040e96e49d3c963f02949660bf9d3a3

    SHA512

    1dd8d99a6472cf9b29d530cbf7c64345227913f5c149182b56d3d4ed13a7d970ee60b560d226a65a50fef0cefd1d6e04da2af822c4f4025c5b6b066730a3534e

  • \Users\Admin\AppData\Local\Temp\mia1\mEXEFunc.dll

    Filesize

    99KB

    MD5

    d1623f75c7b651bfabab28cd7fcc3cc3

    SHA1

    b20fc4814c464118c49255e4e8293240fb179be7

    SHA256

    cafc99819785b403f3209a1fb554908f6d5d10786ce7316f0d93d0940d8921ff

    SHA512

    ed76811630c8e12bcc862665a46c6c0a9320af4565392c23f273d7873758816e5312e4885d0aba585edbebf30c98c588c20429edd5200e02a1e73a1d95cda363

  • \Users\Admin\AppData\Local\Temp\mia1\mWinRunExec.dll

    Filesize

    397KB

    MD5

    226acd3e8819b05531ab672b15d117e2

    SHA1

    3f6bc45686ff1b1e7e824078527e448018d7f69c

    SHA256

    c89109cb5b50d60599b2253ffb03ba3db369a3b785afcce3412bf37b72d1a5a2

    SHA512

    17782200e8ae3a51f8bf471c19c750735d730c195338ab2933214b9714b659c673d48851ce5da842595bda8e4e1d4166cf543580eb73acabc6608d7ab8f3aea4

  • \Users\Admin\AppData\Local\Temp\miaC3DC.tmp\SurpassClient.exe

    Filesize

    4.4MB

    MD5

    819b99310c7ca28651c9a2185452843a

    SHA1

    2a1dbf6650ed587af8248e49c29e925cfc9e04af

    SHA256

    7373930b0f4bf1e7ef0ac07bae1812d839f192fd27f3e2e3fc0a95387090221a

    SHA512

    3a425ed92a4259ec3b035d2a5073202a94b3de56ccf233b2c36435bbbd06ec3704f7b053055f90b515467beeb3189c48f001048c70759472f0786e4a57aaa494

  • \Users\Admin\AppData\Local\Temp\miaC3DC.tmp\mia.lib

    Filesize

    569KB

    MD5

    b21a697f173642fb9635fe6f84c56d33

    SHA1

    a8cb355623f088f8743cc0ee392539e09bef10c1

    SHA256

    6f037e0c92f16c28c483d3ba040e18756d2d229db4c3394c7ba5a9ba033bf802

    SHA512

    3c4c15f0a59561bcde5f4203e4adeda2c63aff31530de481cbcd5d4fb8711db9cb4427191fab988b1162393bf68827b59c84e0e8b93e70c6d2403f32d31fe0c3

  • \Users\Admin\AppData\Local\Temp\{DE740379-FA3B-4136-A089-A0E2074E6D31}.exe

    Filesize

    161.6MB

    MD5

    102a15c650ab7934928cd2365afef538

    SHA1

    309a3ad4983adf40558fcbc257ef280511abe5f9

    SHA256

    da6032fdf29ecb28c12ff4f8eddb6137a890bae3cf2681f73fb28d2b64d4cdf1

    SHA512

    a45c73b4d4824a5244514f9ba7893b41d86603548685e74a1ab822f3e95abb901fe7945e2da334159b807b4f42c97bf51f6577085fc985ecd089d37f0462c6d0

  • \Windows\Installer\MSI97EC.tmp

    Filesize

    391KB

    MD5

    66ec5097c09cc3c2f95d4f6b40d5c1a9

    SHA1

    2b22f3be1d328bef52e0ff4feb47b84468cebce7

    SHA256

    b205553fd808cd53410677b08e1ead0ba040e96e49d3c963f02949660bf9d3a3

    SHA512

    1dd8d99a6472cf9b29d530cbf7c64345227913f5c149182b56d3d4ed13a7d970ee60b560d226a65a50fef0cefd1d6e04da2af822c4f4025c5b6b066730a3534e

  • memory/540-79-0x00000000036B0000-0x000000000371D000-memory.dmp

    Filesize

    436KB

  • memory/1208-54-0x000007FEFB881000-0x000007FEFB883000-memory.dmp

    Filesize

    8KB

  • memory/1748-67-0x0000000073E11000-0x0000000073E13000-memory.dmp

    Filesize

    8KB

  • memory/2020-59-0x00000000753F1000-0x00000000753F3000-memory.dmp

    Filesize

    8KB

  • memory/2020-62-0x00000000021F0000-0x000000000225B000-memory.dmp

    Filesize

    428KB