Resubmissions

31-03-2024 14:31

240331-rvsqssde3x 10

20-03-2024 06:31

240320-g98qfsbc71 10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240319-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-03-2024 06:31

General

  • Target

    2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe

  • Size

    294KB

  • MD5

    f637065576c46fdf526f6156a06a8102

  • SHA1

    208f7d972d29f58c6c18a58242d7764d6969c838

  • SHA256

    b08d4f13f88946dbc97537569f4516ddf832c36d4636501abbad24f505904222

  • SHA512

    9a194f4661dd716770c45bcb90052b1cc8aa90b3593bae4ddad75193a04c397a7f8ca7d03559dbba9167b90fdf31a9ce6a8d6697773809ca444e36a546eb078a

  • SSDEEP

    6144:Rr9W1lNCM2n08o/2mWwEzg+0c+BMCfAXtMcOpXaLbik+:olNJ2n08o/2XwE0+fuMCfAdMcOpXubib

Malware Config

Extracted

Path

C:\Users\Admin\Documents\read_it.txt

Ransom Note
Hello :) All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help. What can I do to get my files back? You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer. The price for the software is $300. Payment can be made in Monero only. How do I pay, where do I get Monero? Purchasing Monero varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinbase - https://www.coinbase.com/how-to-buy/monero Payment informationAmount: $300 in XMR Monero Address: 43fpjf8X9jDZjmA3wwdd695ZwZCmFyTtWaPGkfwWv66UhVX2b24wXy7QCEJYVVFP98Wb6oRcdUgXjE1tk1s669LmQ6RzXGq (IF YOU TRY TO DELETE THIS RANSOMWARE OR USE AND THIRD PART TOOLS TO TRY AND FIX IT, ALL OF YOUR FILES WILL BE GONE FOREVER!) (YOU HAVE 24 HOURS TO SEND THE FUNDS! OR ELSE ALL OF YOUR PERSONAL FILES/DATA ON THIS COMPUTER WILL BE DELETED FROM YOUR SYSTEM AND SOLD ON THE DARK WEB)

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Detects command variations typically used by ransomware 2 IoCs
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 34 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3232
    • C:\Users\Admin\AppData\Roaming\runner.exe
      "C:\Users\Admin\AppData\Roaming\runner.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4448
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1484
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3544
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4940
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2236
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4420
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2392
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2516
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:1276
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2928
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4548
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4672
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1120
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2284,i,13100272738549420251,6151825632958897606,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:2236

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Roaming\runner.exe

        Filesize

        294KB

        MD5

        f637065576c46fdf526f6156a06a8102

        SHA1

        208f7d972d29f58c6c18a58242d7764d6969c838

        SHA256

        b08d4f13f88946dbc97537569f4516ddf832c36d4636501abbad24f505904222

        SHA512

        9a194f4661dd716770c45bcb90052b1cc8aa90b3593bae4ddad75193a04c397a7f8ca7d03559dbba9167b90fdf31a9ce6a8d6697773809ca444e36a546eb078a

      • C:\Users\Admin\Documents\read_it.txt

        Filesize

        1KB

        MD5

        7e52dc42a2ec24d41406e3990ef75582

        SHA1

        3f3bf46735446cba9d6b76ee71704cdf1330dfa8

        SHA256

        cc70ff5d6016c38e22f490120c49be9ac1509e1b0288e51d21746b8f570d690a

        SHA512

        5e9fecb01d2ea2dc421324b718cb824c21e41360a6292ac24b3a535ec2654745fdf6f8a943cacd417a897e8e50d1ad6dd088fbbae1f4158ec2bc027d537cb70b

      • memory/2044-15-0x00007FFE38B50000-0x00007FFE39611000-memory.dmp

        Filesize

        10.8MB

      • memory/2044-17-0x000000001BB00000-0x000000001BB10000-memory.dmp

        Filesize

        64KB

      • memory/2044-437-0x00007FFE38B50000-0x00007FFE39611000-memory.dmp

        Filesize

        10.8MB

      • memory/2044-438-0x000000001BB00000-0x000000001BB10000-memory.dmp

        Filesize

        64KB

      • memory/3232-0-0x0000000000830000-0x0000000000880000-memory.dmp

        Filesize

        320KB

      • memory/3232-1-0x00007FFE38B50000-0x00007FFE39611000-memory.dmp

        Filesize

        10.8MB

      • memory/3232-14-0x00007FFE38B50000-0x00007FFE39611000-memory.dmp

        Filesize

        10.8MB