Overview

overview

10

Static

static

10

installer.exe

windows10-2004-x64

10

installer.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    1750s
  • max time network
    1161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-es
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-eslocale:es-esos:windows10-2004-x64systemwindows
  • submitted
    11/05/2025, 04:26

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General

  • Target

    installer.exe

  • Size

    23KB

  • MD5

    06922caf5b678158a2e6fe89301c5f5c

  • SHA1

    aec21e9dcf48aea56c573b330edc494f58180e1e

  • SHA256

    06fd7069b75bf765c802f1f24d40c44ad52717652c3bc708c0805e39526f90bf

  • SHA512

    f58ca0b5e4153156b1f89c975fa412eba2e453948bb6eb096c8702eb24acb5aac0d7a4691bcf90ea262fd0b3f59d811b9548dabcd339ab057c85846be1c12058

  • SSDEEP

    384:2A3Mg/bqo2sDOcUiU5p7Ut3LTAzkcJtr91CHbGhZCezI:2+qo2zhrp7abTz0tr9mGh4ezI

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 $ 50. 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 contact - DIscord:sleachknight // https://discord.gg/XX4wkFbw Payment informationAmount: 0.00083333 BTC (~$ 50) Bitcoin Address: bc1qwhk0c9cyl2h45thl89s56n5md7q20u9maq2apm
URLs

https://discord.gg/XX4wkFbw

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Chaos family
    chaos
  • 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
  • Renames multiple (204) files with added filename extension

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

    ransomware
  • 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 3 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 3 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 55 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\installer.exe
    "C:\Users\Admin\AppData\Local\Temp\installer.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4908
    • C:\Users\Admin\AppData\Roaming\installer.exe
      "C:\Users\Admin\AppData\Roaming\installer.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:3572
      • 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:1440
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2364
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1044
      • 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:1404
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4576
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3568
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:876
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2332
      • 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:5000
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1728
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1692
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4680
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4340

    Network

    MITRE ATT&CK Enterprise v16

    Replay Monitor

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    Downloads

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

      226B

      MD5

      28d7fcc2b910da5e67ebb99451a5f598

      SHA1

      a5bf77a53eda1208f4f37d09d82da0b9915a6747

      SHA256

      2391511d0a66ed9f84ae54254f51c09e43be01ad685db80da3201ec880abd49c

      SHA512

      2d8eb65cbf04ca506f4ef3b9ae13ccf05ebefab702269ba70ffd1ce9e6c615db0a3ee3ac0e81a06f546fc3250b7b76155dd51241c41b507a441b658c8e761df6

      Download Submit

    • C:\Users\Admin\AppData\Roaming\installer.exe
      Filesize

      23KB

      MD5

      06922caf5b678158a2e6fe89301c5f5c

      SHA1

      aec21e9dcf48aea56c573b330edc494f58180e1e

      SHA256

      06fd7069b75bf765c802f1f24d40c44ad52717652c3bc708c0805e39526f90bf

      SHA512

      f58ca0b5e4153156b1f89c975fa412eba2e453948bb6eb096c8702eb24acb5aac0d7a4691bcf90ea262fd0b3f59d811b9548dabcd339ab057c85846be1c12058

      Download Submit

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

      1000B

      MD5

      5961fece6ca0e455ebf261420a42c7eb

      SHA1

      697f0d9367aead9ec05c0de55b2e498359d908d2

      SHA256

      cf57fdb9e63be622a40279d435f060350d441522e686538aa8a22da9eb92d4ec

      SHA512

      f842863571b1686051d99fe935606e667ce50206292be0a8d4e5eddbb531a4cde79f6d0df5f5a6340d1f75cfa6f01161d10d38c847d2248e2901465eb37c6c36

      Download Submit

    • memory/3572-17-0x00007FFD97E20000-0x00007FFD988E1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3572-22-0x000000001B2A0000-0x000000001B3A2000-memory.dmp

      Filesize

      1.0MB

      Download

    • memory/3572-26-0x00007FFD97E20000-0x00007FFD988E1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3572-484-0x00007FFD97E20000-0x00007FFD988E1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3572-485-0x00007FFD97E20000-0x00007FFD988E1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/4908-0-0x00007FFD97E23000-0x00007FFD97E25000-memory.dmp

      Filesize

      8KB

      Download

    • memory/4908-1-0x0000000000FB0000-0x0000000000FBC000-memory.dmp

      Filesize

      48KB

      Download

    • memory/4908-2-0x0000000003150000-0x0000000003190000-memory.dmp

      Filesize

      256KB

      Download

    • memory/4908-3-0x00007FFD97E23000-0x00007FFD97E25000-memory.dmp

      Filesize

      8KB

      Download
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