Malware Analysis Report

2025-06-16 06:23

Sample ID 230918-kd3fcaae38
Target 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe
SHA256 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08
Tags
chaos evasion ransomware spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08

Threat Level: Known bad

The file 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe was found to be: Known bad.

Malicious Activity Summary

chaos evasion ransomware spyware stealer

Chaos

Chaos family

Chaos Ransomware

Modifies boot configuration data using bcdedit

Reads user/profile data of web browsers

Drops startup file

Checks computer location settings

Executes dropped EXE

Drops desktop.ini file(s)

Sets desktop wallpaper using registry

Enumerates physical storage devices

Unsigned PE

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Opens file in notepad (likely ransom note)

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-18 08:29

Signatures

Chaos Ransomware

Description Indicator Process Target
N/A N/A N/A N/A

Chaos family

chaos

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-18 08:29

Reported

2023-09-18 08:31

Platform

win10v2004-20230915-en

Max time kernel

91s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe"

Signatures

Chaos

ransomware chaos

Chaos Ransomware

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Modifies boot configuration data using bcdedit

ransomware evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\bcdedit.exe N/A
N/A N/A C:\Windows\system32\bcdedit.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IMPORTANT.txt C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Reads user/profile data of web browsers

spyware stealer

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification C:\Users\Admin\Music\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\OneDrive\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Public\Videos\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Desktop\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Favorites\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Public\Documents\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Public\Desktop\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2344688013-2965468717-2034126-1000\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Pictures\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Contacts\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Public\Music\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Documents\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Saved Games\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Searches\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Links\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Public\Pictures\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Downloads\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Videos\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A
File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\zm4xo5to9.jpg" C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000_Classes\Local Settings C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Opens file in notepad (likely ransom note)

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\NOTEPAD.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\system32\NOTEPAD.EXE N/A

Processes

C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe

"C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe"

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

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

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no

C:\Windows\system32\bcdedit.exe

bcdedit /set {default} bootstatuspolicy ignoreallfailures

C:\Windows\system32\bcdedit.exe

bcdedit /set {default} recoveryenabled no

C:\Windows\system32\NOTEPAD.EXE

"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\IMPORTANT.txt

Network

Country Destination Domain Proto
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 254.210.247.8.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/1948-0-0x0000000000B70000-0x0000000000B80000-memory.dmp

memory/1948-1-0x00007FFFABFA0000-0x00007FFFACA61000-memory.dmp

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

MD5 b1228ba24ca5f75f8df9d5d177e5bb2b
SHA1 1895758de51ccfefa40239aa11055540c8c5deb7
SHA256 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08
SHA512 7abc1df0089a1a00aadc11c33eecffb5d85258acc4eac0b261ceaea77e814eaf671506383fe0074fd5779b8bc58e0f48f0d15309aa81aecf27ecc6633da4c5a4

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

MD5 b1228ba24ca5f75f8df9d5d177e5bb2b
SHA1 1895758de51ccfefa40239aa11055540c8c5deb7
SHA256 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08
SHA512 7abc1df0089a1a00aadc11c33eecffb5d85258acc4eac0b261ceaea77e814eaf671506383fe0074fd5779b8bc58e0f48f0d15309aa81aecf27ecc6633da4c5a4

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

MD5 b1228ba24ca5f75f8df9d5d177e5bb2b
SHA1 1895758de51ccfefa40239aa11055540c8c5deb7
SHA256 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08
SHA512 7abc1df0089a1a00aadc11c33eecffb5d85258acc4eac0b261ceaea77e814eaf671506383fe0074fd5779b8bc58e0f48f0d15309aa81aecf27ecc6633da4c5a4

memory/4476-14-0x00007FFFABFA0000-0x00007FFFACA61000-memory.dmp

memory/1948-15-0x00007FFFABFA0000-0x00007FFFACA61000-memory.dmp

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

MD5 46fe77013e7336b17e5270cc708a1da4
SHA1 c8949dbcaac904160eacafcbde51b52c0e5110f1
SHA256 fff91118e1d44de84c1876cfcb6ee5413c336dca888efb2d9af084047fe06cf6
SHA512 b4e5bc4e20005c869e914ab9314944215dced635991772896d07731bf1711708ce74f5660bab8669de965eeac00ce7b56cfb5fd650437dfe3336c90eb3790d52

C:\Users\Admin\AppData\Roaming\IMPORTANT.txt

MD5 46fe77013e7336b17e5270cc708a1da4
SHA1 c8949dbcaac904160eacafcbde51b52c0e5110f1
SHA256 fff91118e1d44de84c1876cfcb6ee5413c336dca888efb2d9af084047fe06cf6
SHA512 b4e5bc4e20005c869e914ab9314944215dced635991772896d07731bf1711708ce74f5660bab8669de965eeac00ce7b56cfb5fd650437dfe3336c90eb3790d52

memory/4476-435-0x00007FFFABFA0000-0x00007FFFACA61000-memory.dmp