Analysis

  • max time kernel
    129s
  • max time network
    126s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    07/07/2020, 23:28

General

  • Target
    tspm.bin.exe
  • Size 1.1MB
  • Sample200707-c6754rh4dx
  • SHA256 7b4a13c022f0948f0a7ace0c2ea8b85af4f596338af14c3a1be2e63f55cbb335
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • System policy modification 1 TTPs 1 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies service 2 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 66 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Interacts with shadow copies 2 TTPs 3 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Looks up external IP address via web service 2 IoCs

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

  • Enumerates connected drives 3 TTPs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • UAC bypass 3 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 750 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tspm.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\tspm.bin.exe"
    1⤵
    • System policy modification
    • Drops desktop.ini file(s)
    • Checks whether UAC is enabled
    • UAC bypass
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3740
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:3960
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1204
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1692
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3412
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1372
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:4012

Network

        MITRE ATT&CK Enterprise v6

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