Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-11-2024 03:29

General

  • Target

    2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe

  • Size

    1.4MB

  • MD5

    46e0d77fd57690bbab3c8ded7015a79a

  • SHA1

    d4b8df6b54c0eb7fdb344d75766a1a71ee74796b

  • SHA256

    7142feb70d6d709c2c6e1ad58a1c69f5348e30d3e5b7154847a7fa4fcc4aab61

  • SHA512

    ba0b8607617bfca14641ae5781a6cd161d31f83989a42b903f63db886a341f9cb96a219b790938ad68848e3436d1d3ed558f30ec605135d297417a7c70f0e37e

  • SSDEEP

    24576:E301J529+RipvL1SXk1QE1RGOTnIEQc4au9NgxnHNn/fI4Ca7:EEI9+ApwXk1QE1RzsEQPaxHNXfZ

Score
10/10

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

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

  • Drops autorun.inf file 1 TTPs 3 IoCs

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

  • Drops file in Program Files directory 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3568
    • C:\Documents and Settings\tazebama.dl_
      "C:\Documents and Settings\tazebama.dl_"
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops autorun.inf file
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3672
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 728
        3⤵
        • Program crash
        PID:4608
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3672 -ip 3672
    1⤵
      PID:4516

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Documents and Settings\tazebama.dl_

      Filesize

      149KB

      MD5

      2371fabd6555639e975c8b8a55f35643

      SHA1

      a642897675426cdf7d1f894657c1d4b3fbd08639

      SHA256

      900e6fc908e863f67af32e7d5915f14584ca6c48714a53d7b123ca1a21ee111a

      SHA512

      15c0c24d2e1e79339cbb8b030bcaa16be5c28b0e4f0bd43191f3bbf560defcf5b0d231587e52857b86126bdc5c50877ac2d7d4e2ec7969c520def32b78e58ff8

    • C:\Users\tazebama.dll

      Filesize

      32KB

      MD5

      b6a03576e595afacb37ada2f1d5a0529

      SHA1

      d598d4d0e70dec2ffa2849edaeb4db94fedcc0b8

      SHA256

      1707eaf60aa91f3791aa5643bfa038e9d8141878d61f5d701ebac51f4ae7aaad

      SHA512

      181b7cc6479352fe2c53c3630d45a839cdeb74708be6709c2a75847a54de3ffc1fdac8450270dde7174ecb23e5cb002f8ce39032429a3112b1202f3381b8918c

    • C:\autorun.inf

      Filesize

      126B

      MD5

      163e20cbccefcdd42f46e43a94173c46

      SHA1

      4c7b5048e8608e2a75799e00ecf1bbb4773279ae

      SHA256

      7780bee9df142a17e0457f3dcb2788b50fc2792370089335597d33719126fb7e

      SHA512

      e5ac0ff6b087857799ab70f68067c9dc73eeb93ccfcad87047052380b95ade3e6eb2a7d01a0f850d548a39f4b1ebb60e299d603dbe25c31b9a3585b34a0c65a8

    • C:\zPharaoh.exe

      Filesize

      149KB

      MD5

      cd69820730671bce9d8451bd54601f63

      SHA1

      6b7436c4149d674efca05e9571cd6a2da005d3ba

      SHA256

      3f8517251a12e4205b4648aada05d02268ef521fef0ea62ac289413a2c4480b1

      SHA512

      be7fd3e380d7329db619b6002bb73f0f64979d261614a05baa2d2bae5f589f3beee63c00a57d4538be7e11df84b1f4c1141a01cd24419d15fdac9298f5f89e88

    • F:\zPharaoh.exe

      Filesize

      149KB

      MD5

      01a559a6aa3edec54d1b7ee51c19bc0a

      SHA1

      1c367f67504a55cbb85b0ffed82b5908cfb7633f

      SHA256

      0218fa3183809f5487b7e975b957bf3e57d619a51c4a89e00d57843efd002549

      SHA512

      090ee9b838032fed676c9ed350705a0fdb2e3061ba440f5aac4d5289374050500dbd881edff57c8bea2f717e1f2e2ef5c28273c96747508db760bf60c25164ac

    • memory/3568-0-0x0000000000400000-0x000000000054B000-memory.dmp

      Filesize

      1.3MB

    • memory/3568-8-0x0000000000416000-0x0000000000422000-memory.dmp

      Filesize

      48KB

    • memory/3568-10-0x0000000000400000-0x000000000054B000-memory.dmp

      Filesize

      1.3MB

    • memory/3568-40-0x0000000000400000-0x000000000054B000-memory.dmp

      Filesize

      1.3MB

    • memory/3672-11-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/3672-39-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB