Overview

overview

10

Static

static

6

e50d52fbac...20.exe

windows7_x64

10

e50d52fbac...20.exe

windows10_x64

10

Analysis

  • max time kernel
    129s
  • max time network
    57s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    13/07/2020, 14:01

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General

  • Target
    e50d52fbac295a37f0ed0b724d4ddafca8c86bcd2391b4c481d51d5e279afd20.exe
  • Size 4.6MB
  • Sample200713-a751hw8tr6
  • SHA256 e50d52fbac295a37f0ed0b724d4ddafca8c86bcd2391b4c481d51d5e279afd20
  • MD5 SHA1 SHA512
Score
10/10
ransomwarespywarepersistence

Malware Config

Extracted

Path

  • C:\Boot\Fonts\HOW TO RESTORE YOUR FILES.TXT

Ransom Note
  • Hello! All your files are encrypted and only I can decrypt them. Contact me: [email protected] or [email protected] Write me if you want to return your files - I can do it very quickly! The header of letter must contain extension of encrypted files. I'm always reply within 24 hours. If not - check spam folder, resend your letter or try send letter from another email service (like protonmail.com). Attention! Do not rename or edit encrypted files: you may have permanent data loss. To prove that I can recover your files, I am ready to decrypt any three files (less than 1Mb) for free (except databases, Excel and backups) HURRY UP!

Signatures

  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Drops file in Program Files directory 25603 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spyware
  • Drops startup file 2 IoCs
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\e50d52fbac295a37f0ed0b724d4ddafca8c86bcd2391b4c481d51d5e279afd20.exe
    "C:\Users\Admin\AppData\Local\Temp\e50d52fbac295a37f0ed0b724d4ddafca8c86bcd2391b4c481d51d5e279afd20.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\wdwrdljfuyvejleigsm.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1776
      • C:\Windows\system32\sc.exe
        SC QUERY
        3⤵
          PID:2088
        • C:\Windows\system32\findstr.exe
          FINDSTR SERVICE_NAME
          3⤵
            PID:2172
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\wtvxhgxacrj.bat
          2⤵
            PID:2192
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\spnkkkbsmawnllba.bat
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:768
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              3⤵
              • Interacts with shadow copies
              PID:1692
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\exigmsd.bat
            2⤵
              PID:1196
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Modifies service
            • Suspicious use of AdjustPrivilegeToken
            PID:3488

          Network

                MITRE ATT&CK Enterprise v6

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                Downloads