Analysis

  • max time kernel
    140s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    10/11/2020, 11:21

General

  • Target
    a3c074948f5e3d2b89f0035bbf7bd74b1a3ec0525dc1496b4463f55ef15f3521.exe
  • Size 725KB
  • Sample201110-ecv1276kja
  • SHA256 a3c074948f5e3d2b89f0035bbf7bd74b1a3ec0525dc1496b4463f55ef15f3521
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3c074948f5e3d2b89f0035bbf7bd74b1a3ec0525dc1496b4463f55ef15f3521.exe
    "C:\Users\Admin\AppData\Local\Temp\a3c074948f5e3d2b89f0035bbf7bd74b1a3ec0525dc1496b4463f55ef15f3521.exe"
    1⤵
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1040
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\2ec243b1-d410-4ace-8abf-c3ef5f21b179" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      PID:932
    • C:\Users\Admin\AppData\Local\Temp\a3c074948f5e3d2b89f0035bbf7bd74b1a3ec0525dc1496b4463f55ef15f3521.exe
      "C:\Users\Admin\AppData\Local\Temp\a3c074948f5e3d2b89f0035bbf7bd74b1a3ec0525dc1496b4463f55ef15f3521.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:112

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/112-7-0x0000000000340000-0x00000000003D1000-memory.dmp

        memory/112-8-0x0000000002000000-0x0000000002011000-memory.dmp

        memory/1040-0-0x0000000000570000-0x0000000000601000-memory.dmp

        memory/1040-1-0x0000000002060000-0x0000000002071000-memory.dmp

        memory/1516-2-0x000007FEF6550000-0x000007FEF67CA000-memory.dmp