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Analysis

  • max time kernel
    168s
  • max time network
    239s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2022, 13:01

General

  • Target

    fb42df0d5ec2b31742cbf16c76d9152d415b3677c964122a7f3b4b65de489ae0.exe

  • Size

    199KB

  • MD5

    671405f6f59a49330b29dfb09ddc135e

  • SHA1

    d1cd04211165b61c283e9dc454f2e7da97c07f22

  • SHA256

    fb42df0d5ec2b31742cbf16c76d9152d415b3677c964122a7f3b4b65de489ae0

  • SHA512

    e81d4ffc6ebfa81e2d23eff9a5c30ff2ac6b1212c3eefbfdefc3462ba971ac80fde23826c0b5224129092c39f0db94d387e2d4b5e227c5ebfd9261a54c2f55d3

  • SSDEEP

    3072:2f8jmIahXzWAx5DxNn3hIE1b49CtpZGohI/4PTq4j2ub/y/Wt5mMqcs9URElFQpG:nmxoALRZ4mZGo6//j6t8Mq79iEL

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb42df0d5ec2b31742cbf16c76d9152d415b3677c964122a7f3b4b65de489ae0.exe
    "C:\Users\Admin\AppData\Local\Temp\fb42df0d5ec2b31742cbf16c76d9152d415b3677c964122a7f3b4b65de489ae0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1468
    • C:\Users\Admin\AppData\Local\Temp\fb42df0d5ec2b31742cbf16c76d9152d415b3677c964122a7f3b4b65de489ae0.exe
      "C:\Users\Admin\AppData\Local\Temp\fb42df0d5ec2b31742cbf16c76d9152d415b3677c964122a7f3b4b65de489ae0.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Adds Run key to start application
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3100
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\smss.exe" CityScape Enable
        3⤵
        • Modifies Windows Firewall
        PID:4248
      • C:\Users\Admin\AppData\Roaming\smss.exe
        /d C:\Users\Admin\AppData\Local\Temp\fb42df0d5ec2b31742cbf16c76d9152d415b3677c964122a7f3b4b65de489ae0.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4892
        • C:\Users\Admin\AppData\Roaming\smss.exe
          /d C:\Users\Admin\AppData\Local\Temp\fb42df0d5ec2b31742cbf16c76d9152d415b3677c964122a7f3b4b65de489ae0.exe
          4⤵
          • Modifies WinLogon for persistence
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetWindowsHookEx
          PID:4196

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\smss.exe

    Filesize

    199KB

    MD5

    d4752c75a33d5d6795863ac5ef1ceedf

    SHA1

    4fc87aef44c5673a671bf7bf681e57531e397734

    SHA256

    da6279cc953d898bb9ef23a184c4f68e810212cee10c116ce0d83a951b245dc8

    SHA512

    3617c5718f493a7aa0f4dbf380ccadbe498068ca5586071b4d7690db020c72d8063d394821ef5d5411812de04bd67d4f15d06542307cdca09f3b86bfda9aad76

  • C:\Users\Admin\AppData\Roaming\smss.exe

    Filesize

    199KB

    MD5

    d4752c75a33d5d6795863ac5ef1ceedf

    SHA1

    4fc87aef44c5673a671bf7bf681e57531e397734

    SHA256

    da6279cc953d898bb9ef23a184c4f68e810212cee10c116ce0d83a951b245dc8

    SHA512

    3617c5718f493a7aa0f4dbf380ccadbe498068ca5586071b4d7690db020c72d8063d394821ef5d5411812de04bd67d4f15d06542307cdca09f3b86bfda9aad76

  • C:\Users\Admin\AppData\Roaming\smss.exe

    Filesize

    199KB

    MD5

    d4752c75a33d5d6795863ac5ef1ceedf

    SHA1

    4fc87aef44c5673a671bf7bf681e57531e397734

    SHA256

    da6279cc953d898bb9ef23a184c4f68e810212cee10c116ce0d83a951b245dc8

    SHA512

    3617c5718f493a7aa0f4dbf380ccadbe498068ca5586071b4d7690db020c72d8063d394821ef5d5411812de04bd67d4f15d06542307cdca09f3b86bfda9aad76

  • memory/3100-133-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/3100-137-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/3100-142-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/4196-147-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/4196-150-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB