Analysis

  • max time kernel
    206s
  • max time network
    105s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 00:23

General

  • Target

    3edfca92f937a2516599fba8ee3a9671a3d887b10eb9670f5fc0d1371a439075.exe

  • Size

    112KB

  • MD5

    37fd36aef8ff9bea1bd247ab639ae300

  • SHA1

    75c1d23397b3503e9a88b7bf2c3e0b5d5bc1ce0c

  • SHA256

    3edfca92f937a2516599fba8ee3a9671a3d887b10eb9670f5fc0d1371a439075

  • SHA512

    bb20419bc0e4ec13511eb60db6674c19776b1b7037bc8de2442e79fb60606cf4002bc5c5efbe2a2a034057225fdd129e400f8280a6365fa3234b8a98d4277e1d

  • SSDEEP

    1536:HfwdiIigE6eXTzQ+64OM2OMATZgJ6rMhe6rWhA3KaHmKq7I8kIi/uz:odQ6eXo+TrMhe6rM7rxz

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 29 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 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3edfca92f937a2516599fba8ee3a9671a3d887b10eb9670f5fc0d1371a439075.exe
    "C:\Users\Admin\AppData\Local\Temp\3edfca92f937a2516599fba8ee3a9671a3d887b10eb9670f5fc0d1371a439075.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Users\Admin\yiicev.exe
      "C:\Users\Admin\yiicev.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:760

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\yiicev.exe

    Filesize

    112KB

    MD5

    1ccc09fe8d965264af8fc5e100801f47

    SHA1

    cd633400405e636de947c0e56934a5dd17e37aec

    SHA256

    9a148d8329d63afc7c3eae285ed391c671ea7d211f82c72c4d9d4f2c7181ff9c

    SHA512

    def9b754746e13a87b5304c36914dcca56c8bf5195654d67e2684b96abe0cf2195e1e1d4075f45ea28fc6ec8f18102cdae5caa6438e1cad69c97f4739305d491

  • C:\Users\Admin\yiicev.exe

    Filesize

    112KB

    MD5

    1ccc09fe8d965264af8fc5e100801f47

    SHA1

    cd633400405e636de947c0e56934a5dd17e37aec

    SHA256

    9a148d8329d63afc7c3eae285ed391c671ea7d211f82c72c4d9d4f2c7181ff9c

    SHA512

    def9b754746e13a87b5304c36914dcca56c8bf5195654d67e2684b96abe0cf2195e1e1d4075f45ea28fc6ec8f18102cdae5caa6438e1cad69c97f4739305d491

  • \Users\Admin\yiicev.exe

    Filesize

    112KB

    MD5

    1ccc09fe8d965264af8fc5e100801f47

    SHA1

    cd633400405e636de947c0e56934a5dd17e37aec

    SHA256

    9a148d8329d63afc7c3eae285ed391c671ea7d211f82c72c4d9d4f2c7181ff9c

    SHA512

    def9b754746e13a87b5304c36914dcca56c8bf5195654d67e2684b96abe0cf2195e1e1d4075f45ea28fc6ec8f18102cdae5caa6438e1cad69c97f4739305d491

  • \Users\Admin\yiicev.exe

    Filesize

    112KB

    MD5

    1ccc09fe8d965264af8fc5e100801f47

    SHA1

    cd633400405e636de947c0e56934a5dd17e37aec

    SHA256

    9a148d8329d63afc7c3eae285ed391c671ea7d211f82c72c4d9d4f2c7181ff9c

    SHA512

    def9b754746e13a87b5304c36914dcca56c8bf5195654d67e2684b96abe0cf2195e1e1d4075f45ea28fc6ec8f18102cdae5caa6438e1cad69c97f4739305d491

  • memory/760-59-0x0000000000000000-mapping.dmp

  • memory/1716-54-0x00000000757E1000-0x00000000757E3000-memory.dmp

    Filesize

    8KB