Analysis

  • max time kernel
    159s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 12:45

General

  • Target

    ef88ebcdb725a3515097e271e0dd5b7e735100605aa82ef734de7c1f902b95ef.exe

  • Size

    517KB

  • MD5

    4faedbf756856dfc8305187fe3eb12f9

  • SHA1

    20765f7138e063f1e9f7cc474cd842bcd146f6ec

  • SHA256

    ef88ebcdb725a3515097e271e0dd5b7e735100605aa82ef734de7c1f902b95ef

  • SHA512

    446c639dea2bc4119ec9625a057c166502eb26c562c806cd6b28a69490fd216f0b0f58f64ab054162fcdcdfab4c4d8933c2ccd20b1ba0a3f70c13f4be3d7b87e

  • SSDEEP

    12288:96RafPsMXfnOr/LeJa6IEzWdiBtwxG+buDS:oRaXxvOjL6SIDwBuO

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ef88ebcdb725a3515097e271e0dd5b7e735100605aa82ef734de7c1f902b95ef.exe
    "C:\Users\Admin\AppData\Local\Temp\ef88ebcdb725a3515097e271e0dd5b7e735100605aa82ef734de7c1f902b95ef.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Roaming\servs.exe
      "C:\Users\Admin\AppData\Roaming\servs.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Windows\system32\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\servs.exe" "servs.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:2000

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    517KB

    MD5

    4faedbf756856dfc8305187fe3eb12f9

    SHA1

    20765f7138e063f1e9f7cc474cd842bcd146f6ec

    SHA256

    ef88ebcdb725a3515097e271e0dd5b7e735100605aa82ef734de7c1f902b95ef

    SHA512

    446c639dea2bc4119ec9625a057c166502eb26c562c806cd6b28a69490fd216f0b0f58f64ab054162fcdcdfab4c4d8933c2ccd20b1ba0a3f70c13f4be3d7b87e

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

    Filesize

    517KB

    MD5

    4faedbf756856dfc8305187fe3eb12f9

    SHA1

    20765f7138e063f1e9f7cc474cd842bcd146f6ec

    SHA256

    ef88ebcdb725a3515097e271e0dd5b7e735100605aa82ef734de7c1f902b95ef

    SHA512

    446c639dea2bc4119ec9625a057c166502eb26c562c806cd6b28a69490fd216f0b0f58f64ab054162fcdcdfab4c4d8933c2ccd20b1ba0a3f70c13f4be3d7b87e

  • memory/1204-54-0x000007FEF4E60000-0x000007FEF5883000-memory.dmp

    Filesize

    10.1MB

  • memory/1204-55-0x000007FEF3B80000-0x000007FEF4C16000-memory.dmp

    Filesize

    16.6MB

  • memory/1204-56-0x000007FEFC101000-0x000007FEFC103000-memory.dmp

    Filesize

    8KB

  • memory/2000-62-0x0000000000000000-mapping.dmp

  • memory/2024-57-0x0000000000000000-mapping.dmp

  • memory/2024-60-0x000007FEF4E60000-0x000007FEF5883000-memory.dmp

    Filesize

    10.1MB

  • memory/2024-61-0x000007FEF3B80000-0x000007FEF4C16000-memory.dmp

    Filesize

    16.6MB

  • memory/2024-64-0x0000000000A26000-0x0000000000A45000-memory.dmp

    Filesize

    124KB

  • memory/2024-65-0x0000000000A26000-0x0000000000A45000-memory.dmp

    Filesize

    124KB