Analysis

  • max time kernel
    150s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 17:07

General

  • Target

    cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486.exe

  • Size

    352KB

  • MD5

    529da567cb6ee7d3669be5041b527822

  • SHA1

    a1ef7799280871750796065673e591d8c36c5741

  • SHA256

    cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486

  • SHA512

    5246f233c0df87ff853fe8e1922c23ef88ce4b4348e981fa1a8c58a901da958abf4aabd2f823da089aa358cd38dcac3b1b514d7b3e0d5edea8d75cb5d1be1943

  • SSDEEP

    6144:BTNeQS1i6ls/P6WRwC6Ebsdce2R+sMGGMnNiIP+Bp91:Bmi6lsH64tISbR/MoSB

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 40 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486.exe
    "C:\Users\Admin\AppData\Local\Temp\cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:896
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 896 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486.exe" & start C:\Users\Admin\AppData\Local\wfujpyr.exe -f
      2⤵
      • Deletes itself
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:980
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /pid 896
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1076
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 3 127.1
        3⤵
        • Runs ping.exe
        PID:2028
      • C:\Users\Admin\AppData\Local\wfujpyr.exe
        C:\Users\Admin\AppData\Local\wfujpyr.exe -f
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1380

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\wfujpyr.exe

    Filesize

    352KB

    MD5

    529da567cb6ee7d3669be5041b527822

    SHA1

    a1ef7799280871750796065673e591d8c36c5741

    SHA256

    cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486

    SHA512

    5246f233c0df87ff853fe8e1922c23ef88ce4b4348e981fa1a8c58a901da958abf4aabd2f823da089aa358cd38dcac3b1b514d7b3e0d5edea8d75cb5d1be1943

  • C:\Users\Admin\AppData\Local\wfujpyr.exe

    Filesize

    352KB

    MD5

    529da567cb6ee7d3669be5041b527822

    SHA1

    a1ef7799280871750796065673e591d8c36c5741

    SHA256

    cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486

    SHA512

    5246f233c0df87ff853fe8e1922c23ef88ce4b4348e981fa1a8c58a901da958abf4aabd2f823da089aa358cd38dcac3b1b514d7b3e0d5edea8d75cb5d1be1943

  • \Users\Admin\AppData\Local\wfujpyr.exe

    Filesize

    352KB

    MD5

    529da567cb6ee7d3669be5041b527822

    SHA1

    a1ef7799280871750796065673e591d8c36c5741

    SHA256

    cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486

    SHA512

    5246f233c0df87ff853fe8e1922c23ef88ce4b4348e981fa1a8c58a901da958abf4aabd2f823da089aa358cd38dcac3b1b514d7b3e0d5edea8d75cb5d1be1943

  • \Users\Admin\AppData\Local\wfujpyr.exe

    Filesize

    352KB

    MD5

    529da567cb6ee7d3669be5041b527822

    SHA1

    a1ef7799280871750796065673e591d8c36c5741

    SHA256

    cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486

    SHA512

    5246f233c0df87ff853fe8e1922c23ef88ce4b4348e981fa1a8c58a901da958abf4aabd2f823da089aa358cd38dcac3b1b514d7b3e0d5edea8d75cb5d1be1943

  • \Users\Admin\AppData\Local\wfujpyr.exe

    Filesize

    352KB

    MD5

    529da567cb6ee7d3669be5041b527822

    SHA1

    a1ef7799280871750796065673e591d8c36c5741

    SHA256

    cbf3cfbbef396ad6bffc362ffe193650a3f0de16702c9cee9c22c0275105d486

    SHA512

    5246f233c0df87ff853fe8e1922c23ef88ce4b4348e981fa1a8c58a901da958abf4aabd2f823da089aa358cd38dcac3b1b514d7b3e0d5edea8d75cb5d1be1943

  • memory/896-57-0x0000000001000000-0x00000000010A5000-memory.dmp

    Filesize

    660KB

  • memory/896-54-0x00000000003B0000-0x00000000003B3000-memory.dmp

    Filesize

    12KB

  • memory/896-55-0x0000000075B41000-0x0000000075B43000-memory.dmp

    Filesize

    8KB

  • memory/980-56-0x0000000000000000-mapping.dmp

  • memory/1076-58-0x0000000000000000-mapping.dmp

  • memory/1380-63-0x0000000000000000-mapping.dmp

  • memory/1380-67-0x0000000001000000-0x00000000010A5000-memory.dmp

    Filesize

    660KB

  • memory/1380-68-0x0000000001000000-0x00000000010A5000-memory.dmp

    Filesize

    660KB

  • memory/2028-59-0x0000000000000000-mapping.dmp