Analysis

  • max time kernel
    151s
  • max time network
    75s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 00:14

General

  • Target

    ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff.exe

  • Size

    105KB

  • MD5

    536ca09ffe8a16c8cb742b299fe1204d

  • SHA1

    15fa786bcc63e7a60f215f250bd2934e2a9e0603

  • SHA256

    ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff

  • SHA512

    a3c0fddc216639ca63cee3aefe4072f4560df39ece966d99a904f3b9ea7746a00855b08016b4d70a22e926643798412f1efacd810349a0cb5d88c4e7b9706829

  • SSDEEP

    1536:InE9SNA6nsDbYHTJ26p4dTR6GMyYKOsNznn3WuKDWnCvORi1wM1EAf7nctzKFKU8:yVnsDbY12e7ahn3WCCWPKEMnyc9L64

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 29 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Drops autorun.inf file 1 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff.exe
    "C:\Users\Admin\AppData\Local\Temp\ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Users\Admin\AppData\Local\Temp\ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff.exe
      74
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Loads dropped DLL
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:684
      • C:\Users\Admin\ruasoov.exe
        "C:\Users\Admin\ruasoov.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Users\Admin\ruasoov.exe
          74
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • Maps connected drives based on registry
          • Drops autorun.inf file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:1820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\ruasoov.exe

    Filesize

    105KB

    MD5

    536ca09ffe8a16c8cb742b299fe1204d

    SHA1

    15fa786bcc63e7a60f215f250bd2934e2a9e0603

    SHA256

    ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff

    SHA512

    a3c0fddc216639ca63cee3aefe4072f4560df39ece966d99a904f3b9ea7746a00855b08016b4d70a22e926643798412f1efacd810349a0cb5d88c4e7b9706829

  • C:\Users\Admin\ruasoov.exe

    Filesize

    105KB

    MD5

    536ca09ffe8a16c8cb742b299fe1204d

    SHA1

    15fa786bcc63e7a60f215f250bd2934e2a9e0603

    SHA256

    ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff

    SHA512

    a3c0fddc216639ca63cee3aefe4072f4560df39ece966d99a904f3b9ea7746a00855b08016b4d70a22e926643798412f1efacd810349a0cb5d88c4e7b9706829

  • C:\Users\Admin\ruasoov.exe

    Filesize

    105KB

    MD5

    536ca09ffe8a16c8cb742b299fe1204d

    SHA1

    15fa786bcc63e7a60f215f250bd2934e2a9e0603

    SHA256

    ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff

    SHA512

    a3c0fddc216639ca63cee3aefe4072f4560df39ece966d99a904f3b9ea7746a00855b08016b4d70a22e926643798412f1efacd810349a0cb5d88c4e7b9706829

  • \Users\Admin\ruasoov.exe

    Filesize

    105KB

    MD5

    536ca09ffe8a16c8cb742b299fe1204d

    SHA1

    15fa786bcc63e7a60f215f250bd2934e2a9e0603

    SHA256

    ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff

    SHA512

    a3c0fddc216639ca63cee3aefe4072f4560df39ece966d99a904f3b9ea7746a00855b08016b4d70a22e926643798412f1efacd810349a0cb5d88c4e7b9706829

  • \Users\Admin\ruasoov.exe

    Filesize

    105KB

    MD5

    536ca09ffe8a16c8cb742b299fe1204d

    SHA1

    15fa786bcc63e7a60f215f250bd2934e2a9e0603

    SHA256

    ddcfd76e848edc9f452652e6f662ba2eca121a3097ed9ea1267d0f3c5e3668ff

    SHA512

    a3c0fddc216639ca63cee3aefe4072f4560df39ece966d99a904f3b9ea7746a00855b08016b4d70a22e926643798412f1efacd810349a0cb5d88c4e7b9706829

  • memory/684-62-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/684-63-0x0000000075071000-0x0000000075073000-memory.dmp

    Filesize

    8KB

  • memory/684-56-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/684-59-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/684-57-0x00000000004010E4-mapping.dmp

  • memory/684-80-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1820-72-0x00000000004010E4-mapping.dmp

  • memory/1820-78-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1820-81-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/2040-66-0x0000000000000000-mapping.dmp