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Analysis

  • max time kernel
    150s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    04/11/2020, 02:35

General

  • Target

    SATURN_RANSOM.bin.exe

  • Size

    338KB

  • MD5

    bbd4c2d2c72648c8f871b36261be23fd

  • SHA1

    77c525e6b8a5760823ad6036e60b3fa244db8e42

  • SHA256

    9e87f069de22ceac029a4ac56e6305d2df54227e6b0f0b3ecad52a01fbade021

  • SHA512

    38f2ff3b7ff6faa63ef0a3200e0dbb9e48e1d404a065f6919cb6d245699479896a42316f299c33c8cc068922934c64f8aa06c88b000d1676870c1d0c0f18e14a

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Enumerates VirtualBox registry keys 2 TTPs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Modifies extensions of user files 16 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Modifies service 2 TTPs 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Modifies Control Panel 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies registry class 269 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 57 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SATURN_RANSOM.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\SATURN_RANSOM.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Checks BIOS information in registry
    • Checks computer location settings
    • Drops startup file
    • Sets desktop wallpaper using registry
    • Suspicious use of WriteProcessMemory
    PID:728
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin.exe delete shadows /all /quiet & wmic.exe shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3780
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:572
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic.exe shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:924
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\#DECRYPT_MY_FILES#.txt
      2⤵
        PID:4064
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\#DECRYPT_MY_FILES#.vbs"
        2⤵
          PID:2224
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\SATURN_RANSOM.bin.exe"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4276
          • C:\Windows\SysWOW64\PING.EXE
            ping 1.1.1.1 -n 1 -w 3000
            3⤵
            • Runs ping.exe
            PID:4324
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Modifies service
        • Suspicious use of AdjustPrivilegeToken
        PID:3920
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
        1⤵
        • Drops file in Windows directory
        • Modifies Control Panel
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4092
      • C:\Windows\system32\browser_broker.exe
        C:\Windows\system32\browser_broker.exe -Embedding
        1⤵
        • Modifies Internet Explorer settings
        PID:1004
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x408
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4168
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
        • Modifies registry class
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4380
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        PID:4444
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        PID:4736
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
          PID:4908

        Network

        MITRE ATT&CK Enterprise v6

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