Analysis

  • max time kernel
    150s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 14:34

General

  • Target

    f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5.exe

  • Size

    5.9MB

  • MD5

    4ee24eae57f3cf1bcc6bfcab3f2eef27

  • SHA1

    304fb6a2add0d2ba849f3ee9a60fc6e1173fba54

  • SHA256

    f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5

  • SHA512

    278550a9d66dc9b097eea31fda0e0c145273bd97abbbfd543f6aaac721a247c89d0dcd91493988625bb8d9b045e25f467d557e941e42f3b0d8bcc0d0a0642721

  • SSDEEP

    98304:XhUCd5V5Z8mRT4DaEYvX1xkEqNDWhHsETGMA+NNSMT9E1vWIK8mviYQR/aFLZinZ:XhUC3fTTEi1xkEqlWP5Ski1uI5mviXSy

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5.exe
    "C:\Users\Admin\AppData\Local\Temp\f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1556
    • C:\Users\Admin\AppData\Local\Temp\f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5.exe
      C:\Users\Admin\AppData\Local\Temp\f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5.exe -a -d
      2⤵
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1560
      • C:\Users\Admin\AppData\Local\Temp\f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5_app.exe
        "C:\Users\Admin\AppData\Local\Temp\f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5_app.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:2360

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\cyyundun.dll

    Filesize

    332KB

    MD5

    8722259b998800a37c3991c58ce64f96

    SHA1

    d370272422272eaf9aca8bc17ba9bcba1b83df70

    SHA256

    b115d63bee020042256019ee14fa0570483180e29c4deb7ed5b8fab522b05244

    SHA512

    867872e22769ecdba19daca70d6ef2bbb9e310abd90ddd1c3ff5b9a3375ef11488f1f7ac021c579ab58b7e8125c8bada584a1e96bb15fcee5837307cb64a6857

  • C:\Users\Admin\AppData\Local\Temp\f2c9cb8fd3bfb519af2f14be237c811552558755ba148fe174ffb65bbf9e20e5_app.exe

    Filesize

    2.8MB

    MD5

    4752dce77495666d331122a4aac240ae

    SHA1

    62d5ab87a07d388d4fce290631d2c70778a3abac

    SHA256

    d8574e6d7d12a6511abf942c5212275ab4286288f80e18979b83afbb3360a64b

    SHA512

    83150e95d23e3d50acc36112452dab7ee90101103f4a7b892b7a738dffdbf295ef2f690447424be449c022f78a3d71565fa04eca55dc8cbe6b27b0255c366c38

  • memory/1556-5-0x00000000743C0000-0x0000000074427000-memory.dmp

    Filesize

    412KB

  • memory/1556-6-0x00000000743C0000-0x0000000074427000-memory.dmp

    Filesize

    412KB

  • memory/1560-13-0x0000000073DF0000-0x0000000073E57000-memory.dmp

    Filesize

    412KB

  • memory/1560-25-0x0000000073DF0000-0x0000000073E57000-memory.dmp

    Filesize

    412KB

  • memory/2360-18-0x0000000000400000-0x0000000000BF1000-memory.dmp

    Filesize

    7.9MB

  • memory/2360-19-0x0000000000401000-0x00000000004B7000-memory.dmp

    Filesize

    728KB

  • memory/2360-20-0x0000000000400000-0x0000000000BF1000-memory.dmp

    Filesize

    7.9MB

  • memory/2360-22-0x0000000000400000-0x0000000000BF1000-memory.dmp

    Filesize

    7.9MB

  • memory/2360-23-0x0000000000400000-0x0000000000BF1000-memory.dmp

    Filesize

    7.9MB

  • memory/2360-24-0x0000000000400000-0x0000000000BF1000-memory.dmp

    Filesize

    7.9MB