Analysis

  • max time kernel
    150s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24/04/2022, 03:48

General

  • Target
    1-de.exe
  • Size 819KB
  • Sample220424-ecsa4acbfm
  • SHA256 a5eb835060919717bdddb6d66b08618586d55bfb41ccef791c4b5beb7ee319a3
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ako-readme.txt

  • ako

Ransom Note
  • Your network have been locked. All your files, documents, photos, databases and other important data are encrypted and have the extension: .0ZaqOC Backups and shadow copies also encrypted or removed. Any third-party software may damage encrypted data but not recover. From this moment, it will be impossible to use files until they are decrypted. The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recovery your files. To get info (decrypt your files) follow this steps: 1) Download and install Tor Browser: https://www.torproject.org/download/ 2) Open our website in TOR: http://kwvhrdibgmmpkhkidrby4mccwqpds5za6uo2thcw5gz75qncv7rbhyad.onion/AHXYFYBKTAXNGRZB 3) Paste your ID in form (you can find your ID below) !! ATTENTION !! !! Any third - party software may damage encrypted data but not recover. !! DO NOT MODIFY ENCRYPTED FILES !! DO NOT CHANGE YOUR ID !! DO NOT REMOVE YOUR ID.KEY FILE --- BEGIN PERSONAL ID --- eyJleHQiOiIuMFphcU9DIiwgImtleSI6IjhVdmV6TW1mMHhEZW53WlpsbG5RbHo veHdXTXZYTjYyKzJhN09aaFpQTlFWWnl3WXhPQWlNQ1JvSDBVSXBzMjFrcWtKN ldYYVhlckw5U1Vkc2xXM29tVStoSmNPQnd1Vm9Kd0lKcXNVR2xtc0xJazNVcHN TN2czM2ZNTmRteUFxcU1sMUJMc3JyR3g1M3BwZDRselZTTUZLVzlLb0dMNnB5Z 2I5clJIMUxWdjlhd3BwLzliaWplT3JZcTJIdXpoa0g2NFFuRG1malZtdE9rRnB qNllTK3BFVmJDM0hFZlVsczAvUE1zMGdRc1JKT2U2QytwQk9pUXlPOEhHclpsS nMyK1psTFU1TTJDTkR6TUE2VHE5UDdNWmNLeXBoWlJOeSswQ1RyakZmUCtERkQ 5SkdoV2lRclZKZWExZkV0eXc1QVlqZ1ZSdkdHUE5hNnlwTHpkeTFpZz09IiwgI m5ldHdvcmsiOiJmYWxzZSIsICJzdWJpZCI6IjAiLCAidmVyIjoiMC41In0= --- END PERSONAL ID ---
URLs
  • http://kwvhrdibgmmpkhkidrby4mccwqpds5za6uo2thcw5gz75qncv7rbhyad.onion/AHXYFYBKTAXNGRZB

Signatures

  • Ako

    Ransomware strain discovered in early 2020.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 6 IoCs
  • Deletes System State backups 3 TTPs 6 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Modifies extensions of user files 8 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Drops file in Windows directory 18 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 3 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1-de.exe
    "C:\Users\Admin\AppData\Local\Temp\1-de.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1016
    • C:\Windows\system32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1640
    • C:\Windows\system32\bcdedit.exe
      bcdedit.exe /set {default} recoveryenabled No
      2⤵
      • Modifies boot configuration data using bcdedit
      PID:2008
    • C:\Windows\system32\bcdedit.exe
      bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
      2⤵
      • Modifies boot configuration data using bcdedit
      PID:1396
    • C:\Windows\system32\wbadmin.exe
      wbadmin DELETE SYSTEMSTATEBACKUP
      2⤵
      • Deletes System State backups
      • Drops file in Windows directory
      PID:1160
    • C:\Windows\system32\wbadmin.exe
      wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest
      2⤵
      • Deletes System State backups
      • Drops file in Windows directory
      PID:812
    • C:\Windows\System32\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1992
    • C:\Windows\system32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1372
    • C:\Windows\system32\bcdedit.exe
      bcdedit.exe /set {default} recoveryenabled No
      2⤵
      • Modifies boot configuration data using bcdedit
      PID:1112
    • C:\Windows\system32\bcdedit.exe
      bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
      2⤵
      • Modifies boot configuration data using bcdedit
      PID:1884
    • C:\Windows\system32\wbadmin.exe
      wbadmin DELETE SYSTEMSTATEBACKUP
      2⤵
      • Deletes System State backups
      • Drops file in Windows directory
      PID:932
    • C:\Windows\system32\wbadmin.exe
      wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest
      2⤵
      • Deletes System State backups
      • Drops file in Windows directory
      PID:544
    • C:\Windows\System32\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:316
    • C:\Windows\system32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1996
    • C:\Windows\system32\bcdedit.exe
      bcdedit.exe /set {default} recoveryenabled No
      2⤵
      • Modifies boot configuration data using bcdedit
      PID:212
    • C:\Windows\system32\bcdedit.exe
      bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
      2⤵
      • Modifies boot configuration data using bcdedit
      PID:236
    • C:\Windows\system32\wbadmin.exe
      wbadmin DELETE SYSTEMSTATEBACKUP
      2⤵
      • Deletes System State backups
      • Drops file in Windows directory
      PID:1892
    • C:\Windows\system32\wbadmin.exe
      wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest
      2⤵
      • Deletes System State backups
      • Drops file in Windows directory
      PID:1792
    • C:\Windows\System32\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1480
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:912

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1160-58-0x000007FEFC5C1000-0x000007FEFC5C3000-memory.dmp