Resubmissions

13-07-2024 09:54

240713-lxbx6swdmm 10

13-07-2024 09:50

240713-lvbvdsyapd 10

13-07-2024 09:46

240713-lr1dksyajd 10

Analysis

  • max time kernel
    93s
  • max time network
    101s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-07-2024 09:46

General

  • Target

    8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720.exe

  • Size

    128KB

  • MD5

    85db480564216a2842299723f2537f57

  • SHA1

    97f5a29bb43312689de4c043dbea6a424319f407

  • SHA256

    8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720

  • SHA512

    c413c3c7dd57abacf2ea431127ddbb89884604dcbcf0a34f74de6b78dc30036602b0c36300eda1169470583a02bd34abf0371a12a6791c300fef0154fe6708c0

  • SSDEEP

    768:8Jqo2zIpszlgqr91OC/ehhegFH4MkaL5PEs:8co21lgqr91OzhvH4QL5cs

Malware Config

Extracted

Path

C:\Users\Admin\Documents\dodov2_readit.txt

Ransom Note
Welcome, DODO has returned. Your files have been encrypted and you won't be able to decrypt them. You can buy 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 $15. Payment can be made in Bitcoin or XMR. How do I pay, where do I get Bitcoin or XMR? Purchasing Bitcoin or XMR varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin or XMR. Payment information: send 0,00063 BTC or 0,086 XMR to our address, then send us email with payment confirmation and you'll get the decryption software. Bitcoin Address: bc1qsht77cpgw7kv420r4secmu88g34wvn96dsyc5s Monero Address: 442n8nf9zojie1JdkZqxDQJFDumBEgZmVZozLdYd5jVPSMws2oUPvNLJKca6JKojyA7zDCZCnMyYnKbY1JLNsbzWK6HNNqW email: [email protected]

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 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
  • Renames multiple (210) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • 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
  • 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 3 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 45 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\8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720.exe
    "C:\Users\Admin\AppData\Local\Temp\8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1916
      • 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:3796
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3800
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1160
      • 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:2572
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4816
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4540
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1764
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1588
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\dodov2_readit.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2488
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2016
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4372
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:3076
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2392

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      128KB

      MD5

      85db480564216a2842299723f2537f57

      SHA1

      97f5a29bb43312689de4c043dbea6a424319f407

      SHA256

      8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720

      SHA512

      c413c3c7dd57abacf2ea431127ddbb89884604dcbcf0a34f74de6b78dc30036602b0c36300eda1169470583a02bd34abf0371a12a6791c300fef0154fe6708c0

    • C:\Users\Admin\Documents\dodov2_readit.txt

      Filesize

      883B

      MD5

      999261e4b702e32896af31a11b78b2a8

      SHA1

      133cb68ea722bc93fa386f2ecc9c1793eee50593

      SHA256

      8283207ef64e8c5b940a1b774b19ac72d6e89fd97963856da489aa756e45e1da

      SHA512

      12d9089ad93f695271f8ce8614545a2f52b79b7473799d46daf75a86039e2947526236972bf96d242e6a6afb0d70e087ef9ee889c3b2ee70e585550d3b5e0ec5

    • memory/1916-14-0x00007FFBB3160000-0x00007FFBB3C21000-memory.dmp

      Filesize

      10.8MB

    • memory/1916-489-0x00007FFBB3160000-0x00007FFBB3C21000-memory.dmp

      Filesize

      10.8MB

    • memory/2756-1-0x00007FFBB3163000-0x00007FFBB3165000-memory.dmp

      Filesize

      8KB

    • memory/2756-0-0x0000000000880000-0x00000000008A6000-memory.dmp

      Filesize

      152KB