chaos | d09b875ead838ec256b863b5e8e252d5bca9172b5479b00699ff31b4d745c92b

Analysis

max time kernel
138s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 01:38

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General

Target

98274f8ae42ac490c3441b3b14459356.exe
Size

23KB
MD5

98274f8ae42ac490c3441b3b14459356
SHA1

59a80c57499b6eb5de31fcbf582eeeb1c3b20e9d
SHA256

d09b875ead838ec256b863b5e8e252d5bca9172b5479b00699ff31b4d745c92b
SHA512

d436397c25a6147a791a78724cbd41d7eede4736f292760a4c7d1785b05b32953b469deec87712d8e447dda362820353393c7fc29a6e74d15c25a8233a9d9cfd
SSDEEP

384:13MLWHn3kI3fcSxlR2WpKL5l4HXEJjr91Czxb5teK:Fn3kIE69pKL5lY8jr9ixbXeK

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

resource	yara_rule
behavioral2/memory/1944-0-0x0000000000700000-0x000000000070C000-memory.dmp	family_chaos
behavioral2/files/0x0006000000023136-6.dat	family_chaos

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	98274f8ae42ac490c3441b3b14459356.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
924	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
T1552.001

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\Searches\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\Administrative Tools\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\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\AccountPictures\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3073191680-435865314-2862784915-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3308	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
924	svchost.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
1944	98274f8ae42ac490c3441b3b14459356.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1944	98274f8ae42ac490c3441b3b14459356.exe
Token: SeDebugPrivilege	924	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 924	1944	98274f8ae42ac490c3441b3b14459356.exe	83
PID 1944 wrote to memory of 924	1944	98274f8ae42ac490c3441b3b14459356.exe	83
PID 924 wrote to memory of 3308	924	svchost.exe	88
PID 924 wrote to memory of 3308	924	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\98274f8ae42ac490c3441b3b14459356.exe
"C:\Users\Admin\AppData\Local\Temp\98274f8ae42ac490c3441b3b14459356.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944
- 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:924
- - 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:3308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
23KB

MD5
98274f8ae42ac490c3441b3b14459356

SHA1
59a80c57499b6eb5de31fcbf582eeeb1c3b20e9d

SHA256
d09b875ead838ec256b863b5e8e252d5bca9172b5479b00699ff31b4d745c92b

SHA512
d436397c25a6147a791a78724cbd41d7eede4736f292760a4c7d1785b05b32953b469deec87712d8e447dda362820353393c7fc29a6e74d15c25a8233a9d9cfd

Download Submit
C:\Users\Admin\Desktop\read_it.txt

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/924-14-0x00007FF92AB70000-0x00007FF92B631000-memory.dmp

Filesize
10.8MB

Download
memory/924-68-0x00007FF92AB70000-0x00007FF92B631000-memory.dmp

Filesize
10.8MB

Download
memory/1944-0-0x0000000000700000-0x000000000070C000-memory.dmp

Filesize
48KB

Download
memory/1944-1-0x00007FF92AB70000-0x00007FF92B631000-memory.dmp

Filesize
10.8MB

Download
memory/1944-15-0x00007FF92AB70000-0x00007FF92B631000-memory.dmp

Filesize
10.8MB

Download