Resubmissions

19-04-2024 22:44

240419-2n14psad3w 10

Analysis

  • max time kernel
    50s
  • max time network
    52s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19-04-2024 22:44

Errors

Reason
Machine shutdown: "{\"level\":\"info\",\"time\":\"2024-04-19T22:45:35Z\",\"message\":\"Dirty snapshot: /var/lib/sandbox/hatchvm/win11-20240412-en/instance_5-dirty.qcow2\"}"

General

  • Target

    C11Setup.exe

  • Size

    301KB

  • MD5

    d8c4b902a949a1f83d1f83d351a54dab

  • SHA1

    87194675e37df056847ca708fd273366c33b0763

  • SHA256

    b522599154e233cec2ae4299d46cd0f2f59133d3ef79d6a630511bf5dd7360a6

  • SHA512

    825197109538f4a746f2b5d8289d2dba68631c0b112840eaa003116bdb3c3c14e404c1b75e225023a80643e88dfaac2b88694a8a3cc3db049f904eb3fd011f7d

  • SSDEEP

    3072:v3kCIQUr9irIKH11poMiMiHuZDL0SYR7c2ytBcL5BdkwvTkmEd:XInr9irIavaPdWwvqd

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\Hacked by Team TIB

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 2 IoCs
  • Deletes shadow copies 2 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 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 data under HKEY_USERS 15 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 18 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\C11Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\C11Setup.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3652
    • C:\Users\Admin\AppData\Roaming\C11Setup.exe
      "C:\Users\Admin\AppData\Roaming\C11Setup.exe"
      2⤵
      • 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:3636
      • 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:2100
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2348
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2928
      • 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:1832
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2328
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2324
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1456
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3220
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4152
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1796
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1888
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3632
    • C:\Windows\system32\OpenWith.exe
      C:\Windows\system32\OpenWith.exe -Embedding
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:5028
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
      1⤵
      • Suspicious use of SetWindowsHookEx
      PID:2704
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x4 /state0:0xa3a1b055 /state1:0x41c64e6d
      1⤵
      • Modifies data under HKEY_USERS
      • Suspicious use of SetWindowsHookEx
      PID:4880

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\C11Setup.exe.log

      Filesize

      226B

      MD5

      4ae344179932dc8e2c6fe2079f9753ef

      SHA1

      60eacc624412b1f34809780769e3b212f138ea9c

      SHA256

      3063de3898a9b34e19f8cf0beeec2b8bd6bd05896b52abd73f4703d07b8a7cd4

      SHA512

      fadfe2b83f1af8fdc50430325f69d6172d2c1e889ca3800b3b83e5535d5970c32e9a176b48563275a0630d56c96d9f88df148fd6b2d281f0fc58129e5f4dba19

    • C:\Users\Admin\AppData\Roaming\C11Setup.exe

      Filesize

      301KB

      MD5

      d8c4b902a949a1f83d1f83d351a54dab

      SHA1

      87194675e37df056847ca708fd273366c33b0763

      SHA256

      b522599154e233cec2ae4299d46cd0f2f59133d3ef79d6a630511bf5dd7360a6

      SHA512

      825197109538f4a746f2b5d8289d2dba68631c0b112840eaa003116bdb3c3c14e404c1b75e225023a80643e88dfaac2b88694a8a3cc3db049f904eb3fd011f7d

    • C:\Users\Admin\Desktop\Hacked by Team TIB

      Filesize

      964B

      MD5

      4217b8b83ce3c3f70029a056546f8fd0

      SHA1

      487cdb5733d073a0427418888e8f7070fe782a03

      SHA256

      7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

      SHA512

      2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

    • memory/3636-16-0x00007FFDA6590000-0x00007FFDA7052000-memory.dmp

      Filesize

      10.8MB

    • memory/3636-70-0x000000001B300000-0x000000001B310000-memory.dmp

      Filesize

      64KB

    • memory/3636-71-0x00007FFDA6590000-0x00007FFDA7052000-memory.dmp

      Filesize

      10.8MB

    • memory/3636-72-0x000000001B300000-0x000000001B310000-memory.dmp

      Filesize

      64KB

    • memory/3636-73-0x00007FFDA6590000-0x00007FFDA7052000-memory.dmp

      Filesize

      10.8MB

    • memory/3652-0-0x0000000000F10000-0x0000000000F62000-memory.dmp

      Filesize

      328KB

    • memory/3652-1-0x00007FFDA6590000-0x00007FFDA7052000-memory.dmp

      Filesize

      10.8MB

    • memory/3652-15-0x00007FFDA6590000-0x00007FFDA7052000-memory.dmp

      Filesize

      10.8MB