Overview

overview

10

Static

static

60e2ff67f5...e1.exe

windows7_x64

10

60e2ff67f5...e1.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    4294211s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    06-03-2022 05:02

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General

  • Target

    60e2ff67f5e92eebcdca4b22343d4cd663e9c63e6259d9f4563e68da38b330e1.exe

  • Size

    214KB

  • MD5

    7f5669e4d89b5a1636f05b52b7c0f9b7

  • SHA1

    12d7b1fb828cea1b1abb568bcc9d0e29e78ecdb6

  • SHA256

    60e2ff67f5e92eebcdca4b22343d4cd663e9c63e6259d9f4563e68da38b330e1

  • SHA512

    2010a75f1c8634480a42a2c995874459f4ab983fa90ae7fe7d12f0a6d53a34eb68622241f2a43c9218cb8290edb9ca6484991a7811d7e54ead7da5cb8ee3d220

Score
10/10
buranpersistenceransomware

Malware Config

Extracted

Path

C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

Family

buran

Ransom Note
!!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. To be sure we have the decryptor and it works you can send an email: [email protected] and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? Write to email: [email protected] Reserved email: [email protected] Your personal ID: F53-C6F-8B9 Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Signatures

  • Buran

    Ransomware-as-a-service based on the VegaLocker family first identified in 2019.

    ransomwareburan
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Executes dropped EXE 2 IoCs
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Modifies system certificate store 2 TTPs 5 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\60e2ff67f5e92eebcdca4b22343d4cd663e9c63e6259d9f4563e68da38b330e1.exe
    "C:\Users\Admin\AppData\Local\Temp\60e2ff67f5e92eebcdca4b22343d4cd663e9c63e6259d9f4563e68da38b330e1.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1124
    • C:\Windows\SysWOW64\notepad.exe
      notepad.exe
      2⤵
        PID:1288
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\smss.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\smss.exe" -start
        2⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1212
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /C wmic shadowcopy delete
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:280
          • C:\Windows\SysWOW64\Wbem\WMIC.exe
            wmic shadowcopy delete
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1608
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
            PID:1924
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /C bcdedit /set {default} recoveryenabled no
            3⤵
              PID:1116
            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\smss.exe
              "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\smss.exe" -agent 0
              3⤵
              • Executes dropped EXE
              • Modifies extensions of user files
              • Drops file in Program Files directory
              PID:2012
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\~temp001.bat
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:596
              • C:\Windows\SysWOW64\Wbem\WMIC.exe
                wmic shadowcopy delete
                4⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:1712
              • C:\Windows\SysWOW64\vssadmin.exe
                vssadmin delete shadows /all /quiet
                4⤵
                • Interacts with shadow copies
                PID:1052
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /C vssadmin delete shadows /all /quiet
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:320
              • C:\Windows\SysWOW64\vssadmin.exe
                vssadmin delete shadows /all /quiet
                4⤵
                • Interacts with shadow copies
                PID:1604
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /C wbadmin delete catalog -quiet
              3⤵
                PID:328
              • C:\Windows\SysWOW64\notepad.exe
                notepad.exe
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:1916
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 196
                  4⤵
                  • Program crash
                  PID:1640
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1284

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • memory/1124-54-0x0000000074FF1000-0x0000000074FF3000-memory.dmp

            Filesize

            8KB

            Download

          • memory/1288-59-0x0000000000080000-0x0000000000081000-memory.dmp

            Filesize

            4KB

            Download