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Overview

overview

10

Static

static

10

Free Nitro...N).exe

windows7-x64

10

Free Nitro...N).exe

windows10-2004-x64

10

Analysis

  • max time kernel
    37s
  • max time network
    36s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 07:51

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General

  • Target

    Free Nitro V1 (NICHT ÖFFNEN).exe

  • Size

    23KB

  • MD5

    15b098986a7466a4c5262f4d4034aa70

  • SHA1

    85eef8e7bcbd7358ba4eeed6e2813b2eb394f32f

  • SHA256

    251502f58eaa174cc8e0644573a8f12e766d662b4c8d88db99080dc73748bd14

  • SHA512

    e48b29e292c6c89d28ea6b9fce4b7560fed82faa9848fcd9c227edab2f376b670e5a5b7b57a59e525456893858d5dbf7d1acd5a09f42004fea24799b5f736530

  • SSDEEP

    384:O3Mg/bqo2tvxtivpa5vYsJ5r91Cj2bDuNem:sqo2rtMp5k5r9M2bIem

Score
10/10
chaosdefense_evasionevasionexecutionimpactransomwarespywarestealer

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 $170. 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: 0.003 BTC Bitcoin Address: bc1qsn8l9fjycnlx07fddkyp6wpsddey04jg6ffrk5

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

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

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • 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.

    spywarestealer
  • 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 2 TTPs 1 IoCs

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

    ransomware
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 50 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.

    persistence
  • Uses Volume Shadow Copy service COM API

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Free Nitro V1 (NICHT ÖFFNEN).exe
    "C:\Users\Admin\AppData\Local\Temp\Free Nitro V1 (NICHT ÖFFNEN).exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3192
    • C:\Users\Admin\AppData\Roaming\Free Nitro V1.exe
      "C:\Users\Admin\AppData\Roaming\Free Nitro V1.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:5076
      • 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:1908
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:5092
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:5044
      • 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:4516
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4420
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:860
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3752
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3680
      • 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:32
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1808
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2488
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4824
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:468

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Free Nitro V1.exe
      Filesize

      23KB

      MD5

      15b098986a7466a4c5262f4d4034aa70

      SHA1

      85eef8e7bcbd7358ba4eeed6e2813b2eb394f32f

      SHA256

      251502f58eaa174cc8e0644573a8f12e766d662b4c8d88db99080dc73748bd14

      SHA512

      e48b29e292c6c89d28ea6b9fce4b7560fed82faa9848fcd9c227edab2f376b670e5a5b7b57a59e525456893858d5dbf7d1acd5a09f42004fea24799b5f736530

      Download Submit

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

      958B

      MD5

      c3100858c2ef177fbcb0be8a79c5d808

      SHA1

      f72d55236d91dc5f25ba7449e905b10f93550211

      SHA256

      3ced8d9de724facb6a6c15d7e83bb7e6da14b6621594044f106f06f392aa8365

      SHA512

      d5bc0605d51574de1d01d393255ba4fe1698afedd13042f26793fee939ec33b1d5411e401dd14dba9a14e25c4fc8b7d7a1906af0828d30f33fc35dac2f032f0c

      Download Submit

    • memory/3192-0-0x00000000008B0000-0x00000000008BC000-memory.dmp

      Filesize

      48KB

      Download

    • memory/3192-1-0x00007FFB5AE73000-0x00007FFB5AE75000-memory.dmp

      Filesize

      8KB

      Download

    • memory/5076-14-0x00007FFB5AE70000-0x00007FFB5B931000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/5076-22-0x00007FFB5AE70000-0x00007FFB5B931000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/5076-461-0x00007FFB5AE70000-0x00007FFB5B931000-memory.dmp

      Filesize

      10.8MB

      Download