Analysis

  • max time kernel
    117s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    01-10-2024 03:33

General

  • Target

    2024-10-01_2a163665e2c9b007dddaa37bd4f5eb11_chaos_destroyer_wannacry.exe

  • Size

    23KB

  • MD5

    2a163665e2c9b007dddaa37bd4f5eb11

  • SHA1

    23e2bc9ff87681a093465389ab3b4e7dba6df7b5

  • SHA256

    fb883f97d3c70a079865c0e7e1f5c97da399b06eaaad65eaa19c7ec90ec5c09f

  • SHA512

    1612a909c5a7544e78270b800022f76e9325a713f77a676c51e5647c976dab3219d3bd1322fb18974479aa5294a0dd50f85644a781f92a06a0b6e09c6a5554c3

  • SSDEEP

    384:73MLWHn3kI3PSCV3pO/sBNakUJxr91CzxbUOeq:nn3kIVpL8xr9ixbBeq

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\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 TEST002

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.

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

    Uses wbadmin.exe to inhibit system recovery.

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

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

  • Drops desktop.ini file(s) 34 IoCs
  • 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 7 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\2024-10-01_2a163665e2c9b007dddaa37bd4f5eb11_chaos_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-01_2a163665e2c9b007dddaa37bd4f5eb11_chaos_destroyer_wannacry.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Roaming\zambaramba.exe
      "C:\Users\Admin\AppData\Roaming\zambaramba.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2744
      • 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:2556
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2948
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2016
      • 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:772
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:780
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:320
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3052
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2512
      • 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:2360
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2452
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:576
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1828
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:408

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        23KB

        MD5

        2a163665e2c9b007dddaa37bd4f5eb11

        SHA1

        23e2bc9ff87681a093465389ab3b4e7dba6df7b5

        SHA256

        fb883f97d3c70a079865c0e7e1f5c97da399b06eaaad65eaa19c7ec90ec5c09f

        SHA512

        1612a909c5a7544e78270b800022f76e9325a713f77a676c51e5647c976dab3219d3bd1322fb18974479aa5294a0dd50f85644a781f92a06a0b6e09c6a5554c3

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

        Filesize

        971B

        MD5

        6d081874126362534d35057a296d2287

        SHA1

        31208b98e212c86423e9f42b911a10073b695c38

        SHA256

        d7f27743b24a4e099216d76828ceb277d9e2e6dd2e2a958de22b3e277a01e482

        SHA512

        0b6abda02243dd63a69cba826396432fd6e9d916a06ebb9038133fa18ea112cb7caafe0188f4cb1aef2232f136b68cdbdd6fb2c726955c10ae3b3ba995d3a932

      • memory/2744-7-0x00000000012D0000-0x00000000012DC000-memory.dmp

        Filesize

        48KB

      • memory/2744-27-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

        Filesize

        9.9MB

      • memory/2744-71-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

        Filesize

        9.9MB

      • memory/2744-73-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

        Filesize

        9.9MB

      • memory/2932-0-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

        Filesize

        4KB

      • memory/2932-1-0x00000000000C0000-0x00000000000CC000-memory.dmp

        Filesize

        48KB