Analysis

  • max time kernel
    149s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    22-08-2024 18:25

General

  • Target

    2024-08-22_da7836f28eb1d6d8b9403a9446ba46bc_wannacry.exe

  • Size

    276KB

  • MD5

    da7836f28eb1d6d8b9403a9446ba46bc

  • SHA1

    8a93a6ce6540bb529b3a90ad476133a5da836cc7

  • SHA256

    d606cef96f6cbd1ce7b0b577bc0f3c12d3eec8f3da56cce9b6027c315a6ab8ee

  • SHA512

    ea437d424f193869fb99821c35deb0b1590ef256dfa46d3bd95adc647b3e5720647a6a94212942c49889bfb26b0c37799680501fba21fc45e6665b508882835f

  • SSDEEP

    6144:rswX77qtFAjI/SqAg8m5xA+ey0twt4lEr9d4Xu:rswXMAjIaqAg8GxPT0twt4lGq

Malware Config

Extracted

Path

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

Family

chaos

Ransom Note
----> Chaos is multi language ransomware. Translate your note to any language <---- 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 $1,500. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin 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: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 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.

  • Looks for VMWare Tools registry key 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 30 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\2024-08-22_da7836f28eb1d6d8b9403a9446ba46bc_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-08-22_da7836f28eb1d6d8b9403a9446ba46bc_wannacry.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Maps connected drives based on registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2732
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Drops startup file
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops desktop.ini file(s)
      • Maps connected drives based on registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2728
      • 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:1528
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2276
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1764
      • 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:1660
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2332
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1908
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1976
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:564
      • 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:1284
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3024
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2432
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2036
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1628

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        276KB

        MD5

        da7836f28eb1d6d8b9403a9446ba46bc

        SHA1

        8a93a6ce6540bb529b3a90ad476133a5da836cc7

        SHA256

        d606cef96f6cbd1ce7b0b577bc0f3c12d3eec8f3da56cce9b6027c315a6ab8ee

        SHA512

        ea437d424f193869fb99821c35deb0b1590ef256dfa46d3bd95adc647b3e5720647a6a94212942c49889bfb26b0c37799680501fba21fc45e6665b508882835f

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

        Filesize

        964B

        MD5

        4217b8b83ce3c3f70029a056546f8fd0

        SHA1

        487cdb5733d073a0427418888e8f7070fe782a03

        SHA256

        7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

        SHA512

        2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

      • \Users\Admin\AppData\Local\Temp\kMspF.dll

        Filesize

        112KB

        MD5

        2f1a50031dcf5c87d92e8b2491fdcea6

        SHA1

        71e2aaa2d1bb7dbe32a00e1d01d744830ecce08f

        SHA256

        47578a37901c82f66e4dba47acd5c3cab6d09c9911d16f5ad0413275342147ed

        SHA512

        1c66dbe1320c1a84023bdf77686a2a7ab79a3e86ba5a4ea2cda9a37f8a916137d5cfec30b28ceae181355f6f279270465ef63ae90b7e8dcd4c1a8198a7fd36a8

      • memory/2728-16-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

        Filesize

        9.9MB

      • memory/2728-17-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

        Filesize

        9.9MB

      • memory/2728-13-0x00000000001B0000-0x00000000001FC000-memory.dmp

        Filesize

        304KB

      • memory/2728-230-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

        Filesize

        9.9MB

      • memory/2728-229-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

        Filesize

        9.9MB

      • memory/2732-7-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

        Filesize

        9.9MB

      • memory/2732-0-0x000007FEF5D83000-0x000007FEF5D84000-memory.dmp

        Filesize

        4KB

      • memory/2732-18-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

        Filesize

        9.9MB

      • memory/2732-6-0x0000000000370000-0x0000000000378000-memory.dmp

        Filesize

        32KB

      • memory/2732-1-0x0000000000830000-0x000000000087C000-memory.dmp

        Filesize

        304KB