Overview

overview

10

Static

static

AntiRecuvaAndDB.exe

windows7_x64

10

AntiRecuvaAndDB.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    55s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    06/10/2021, 10:29

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General

  • Target
    AntiRecuvaAndDB.exe
  • Size 51KB
  • Sample211006-mh8t2abcbr
  • SHA256 265d1ae339e9397976d9328b2c84aca61a7cb6c0bca9f2f8dc213678e2b2ad86
  • MD5 SHA1 SHA512
Score
10/10
phobosevasionpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

  • \??\c:\users\admin\desktop\##-IMPORTANT_NOTICE-##.Txt

Ransom Note
  • ::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted and now have the \"Eking\" extension. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay in bitcoins. discount will be given to those who contact within 24h .3. Q: What about guarantees? A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailbox: [email protected] or [email protected] .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I donít want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON\'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

    ransomwarephobos
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
    ransomwareevasion
  • Deletes backup catalog 3 TTPs 2 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Drops startup file 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AntiRecuvaAndDB.exe
    "C:\Users\Admin\AppData\Local\Temp\AntiRecuvaAndDB.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:604
    • C:\Users\Admin\AppData\Local\Temp\AntiRecuvaAndDB.exe
      "C:\Users\Admin\AppData\Local\Temp\AntiRecuvaAndDB.exe"
      2⤵
        PID:240
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1652
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1236
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1240
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:840
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1528
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1440
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1644
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
            PID:836
          • C:\Windows\system32\netsh.exe
            netsh firewall set opmode mode=disable
            3⤵
              PID:556
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1524
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              3⤵
              • Interacts with shadow copies
              PID:1448
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic shadowcopy delete
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1172
            • C:\Windows\system32\bcdedit.exe
              bcdedit /set {default} bootstatuspolicy ignoreallfailures
              3⤵
              • Modifies boot configuration data using bcdedit
              PID:1804
            • C:\Windows\system32\bcdedit.exe
              bcdedit /set {default} recoveryenabled no
              3⤵
              • Modifies boot configuration data using bcdedit
              PID:1680
            • C:\Windows\system32\wbadmin.exe
              wbadmin delete catalog -quiet
              3⤵
              • Deletes backup catalog
              PID:2012
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:768
        • C:\Windows\system32\wbengine.exe
          "C:\Windows\system32\wbengine.exe"
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1604
        • C:\Windows\System32\vdsldr.exe
          C:\Windows\System32\vdsldr.exe -Embedding
          1⤵
            PID:1356
          • C:\Windows\System32\vds.exe
            C:\Windows\System32\vds.exe
            1⤵
              PID:2004

            Network

                  MITRE ATT&CK Enterprise v6

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                  Downloads

                  memory/604-59-0x0000000075211000-0x0000000075213000-memory.dmp
                  Download

                  memory/836-65-0x000007FEFBAE1000-0x000007FEFBAE3000-memory.dmp
                  Download