Analysis

  • max time kernel
    76s
  • max time network
    78s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    18-04-2021 01:16

General

  • Target

    7fee4cf62c39b0ea803bfe48775c5bd58755da836937ddd4bc0caafba08b4212.exe

  • Size

    61KB

  • MD5

    3e0b01d02fd730bb79410fb4b8d909b4

  • SHA1

    31d8bf2c78aa058334285be25be341177adbc1b5

  • SHA256

    7fee4cf62c39b0ea803bfe48775c5bd58755da836937ddd4bc0caafba08b4212

  • SHA512

    2ce5291e66c5f952a340310eb4482dea370cec2fefde642964388b8ec002e1d307516ad5be89a85d6ed1430727ceb69138e1912adc8fd3cb6ec7123ffb20fdee

Malware Config

Signatures

  • Modifies extensions of user files 9 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 3 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7fee4cf62c39b0ea803bfe48775c5bd58755da836937ddd4bc0caafba08b4212.exe
    "C:\Users\Admin\AppData\Local\Temp\7fee4cf62c39b0ea803bfe48775c5bd58755da836937ddd4bc0caafba08b4212.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1116
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1940

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Install Root Certificate

1
T1130

Impact

Defacement

1
T1491

Replay Monitor

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Downloads

  • memory/1100-60-0x0000000000F20000-0x0000000000F21000-memory.dmp
    Filesize

    4KB

  • memory/1100-62-0x0000000075DA1000-0x0000000075DA3000-memory.dmp
    Filesize

    8KB

  • memory/1100-65-0x0000000000E40000-0x0000000000E41000-memory.dmp
    Filesize

    4KB

  • memory/1100-66-0x0000000000E45000-0x0000000000E56000-memory.dmp
    Filesize

    68KB

  • memory/1116-63-0x0000000000000000-mapping.dmp
  • memory/1940-64-0x0000000000000000-mapping.dmp