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Analysis

  • max time kernel
    150s
  • max time network
    68s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    21/11/2022, 16:57

General

  • Target

    f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df.exe

  • Size

    156KB

  • MD5

    11a79b8eaa38227652f85db79cf784f1

  • SHA1

    020d05a0341b35d0d87628ce567fdba915177468

  • SHA256

    f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df

  • SHA512

    f22b2f5f305ae4e23ee1a61d7807edfb78e80803b30c2c05c7cec19dab0143cc8644b752b84337a5826c97a90a4ac90dce19bbbe1328fd08346b729c78424564

  • SSDEEP

    3072:OvdtlFtmpTTW1m66Xf6X7G91F7JNZETzN7eU3:OvdtlulWA66Xf6X7G91Ft/k5

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 28 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\f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df.exe
    "C:\Users\Admin\AppData\Local\Temp\f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:800
    • C:\Users\Admin\AppData\Local\Temp\f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df.exe
      71
      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:1776
      • C:\Users\Admin\youomep.exe
        "C:\Users\Admin\youomep.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1592
        • C:\Users\Admin\youomep.exe
          71
          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:1488

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\youomep.exe

    Filesize

    156KB

    MD5

    11a79b8eaa38227652f85db79cf784f1

    SHA1

    020d05a0341b35d0d87628ce567fdba915177468

    SHA256

    f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df

    SHA512

    f22b2f5f305ae4e23ee1a61d7807edfb78e80803b30c2c05c7cec19dab0143cc8644b752b84337a5826c97a90a4ac90dce19bbbe1328fd08346b729c78424564

  • C:\Users\Admin\youomep.exe

    Filesize

    156KB

    MD5

    11a79b8eaa38227652f85db79cf784f1

    SHA1

    020d05a0341b35d0d87628ce567fdba915177468

    SHA256

    f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df

    SHA512

    f22b2f5f305ae4e23ee1a61d7807edfb78e80803b30c2c05c7cec19dab0143cc8644b752b84337a5826c97a90a4ac90dce19bbbe1328fd08346b729c78424564

  • C:\Users\Admin\youomep.exe

    Filesize

    156KB

    MD5

    11a79b8eaa38227652f85db79cf784f1

    SHA1

    020d05a0341b35d0d87628ce567fdba915177468

    SHA256

    f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df

    SHA512

    f22b2f5f305ae4e23ee1a61d7807edfb78e80803b30c2c05c7cec19dab0143cc8644b752b84337a5826c97a90a4ac90dce19bbbe1328fd08346b729c78424564

  • \Users\Admin\youomep.exe

    Filesize

    156KB

    MD5

    11a79b8eaa38227652f85db79cf784f1

    SHA1

    020d05a0341b35d0d87628ce567fdba915177468

    SHA256

    f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df

    SHA512

    f22b2f5f305ae4e23ee1a61d7807edfb78e80803b30c2c05c7cec19dab0143cc8644b752b84337a5826c97a90a4ac90dce19bbbe1328fd08346b729c78424564

  • \Users\Admin\youomep.exe

    Filesize

    156KB

    MD5

    11a79b8eaa38227652f85db79cf784f1

    SHA1

    020d05a0341b35d0d87628ce567fdba915177468

    SHA256

    f0a64a0eef2132feabbd46ec78ee14b7a2e6814964bd8508ebc3cda530ed23df

    SHA512

    f22b2f5f305ae4e23ee1a61d7807edfb78e80803b30c2c05c7cec19dab0143cc8644b752b84337a5826c97a90a4ac90dce19bbbe1328fd08346b729c78424564

  • memory/1488-78-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1488-81-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1776-63-0x0000000075521000-0x0000000075523000-memory.dmp

    Filesize

    8KB

  • memory/1776-56-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1776-62-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1776-59-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1776-80-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB