chaos | d09b875ead838ec256b863b5e8e252d5bca9172b5479b00699ff31b4d745c92b

General

Target

Chaos Ransomware.exe
Size

23KB
MD5

98274f8ae42ac490c3441b3b14459356
SHA1

59a80c57499b6eb5de31fcbf582eeeb1c3b20e9d
SHA256

d09b875ead838ec256b863b5e8e252d5bca9172b5479b00699ff31b4d745c92b
SHA512

d436397c25a6147a791a78724cbd41d7eede4736f292760a4c7d1785b05b32953b469deec87712d8e447dda362820353393c7fc29a6e74d15c25a8233a9d9cfd

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\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 $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.
ransomware chaos

Chaos Ransomware 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\svchost.exe	family_chaos
C:\Users\Admin\AppData\Roaming\svchost.exe	family_chaos

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

3828 svchost.exe

pid	process
3828	svchost.exe

Drops startup file 3 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt	svchost.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Drops desktop.ini file(s) 34 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Windows PowerShell\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

svchost.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings svchost.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

936 NOTEPAD.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

svchost.exe

pid process

3828 svchost.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	svchost.exe

pid	process
936	NOTEPAD.EXE

pid	process
3828	svchost.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

Chaos Ransomware.exesvchost.exe

pid	process
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
632	Chaos Ransomware.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe
3828	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Chaos Ransomware.exesvchost.exe

description pid process

Token: SeDebugPrivilege 632 Chaos Ransomware.exe
Token: SeDebugPrivilege 3828 svchost.exe

description	pid	process
Token: SeDebugPrivilege	632	Chaos Ransomware.exe
Token: SeDebugPrivilege	3828	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Chaos Ransomware.exesvchost.exe

description	pid	process	target process
PID 632 wrote to memory of 3828	632	Chaos Ransomware.exe	svchost.exe
PID 632 wrote to memory of 3828	632	Chaos Ransomware.exe	svchost.exe
PID 3828 wrote to memory of 936	3828	svchost.exe	NOTEPAD.EXE
PID 3828 wrote to memory of 936	3828	svchost.exe	NOTEPAD.EXE

C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware.exe
"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:632
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Drops desktop.ini file(s)
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3828
- - 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:936

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

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

MD5
98274f8ae42ac490c3441b3b14459356

SHA1
59a80c57499b6eb5de31fcbf582eeeb1c3b20e9d

SHA256
d09b875ead838ec256b863b5e8e252d5bca9172b5479b00699ff31b4d745c92b

SHA512
d436397c25a6147a791a78724cbd41d7eede4736f292760a4c7d1785b05b32953b469deec87712d8e447dda362820353393c7fc29a6e74d15c25a8233a9d9cfd

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

MD5
98274f8ae42ac490c3441b3b14459356

SHA1
59a80c57499b6eb5de31fcbf582eeeb1c3b20e9d

SHA256
d09b875ead838ec256b863b5e8e252d5bca9172b5479b00699ff31b4d745c92b

SHA512
d436397c25a6147a791a78724cbd41d7eede4736f292760a4c7d1785b05b32953b469deec87712d8e447dda362820353393c7fc29a6e74d15c25a8233a9d9cfd

Download Submit
memory/632-114-0x0000000000920000-0x0000000000921000-memory.dmp

Filesize
4KB

Download
memory/936-121-0x0000000000000000-mapping.dmp

Download
memory/3828-116-0x0000000000000000-mapping.dmp

Download
memory/3828-123-0x000000001BF02000-0x000000001BF03000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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