chaos | 001b2843e0af153d71b373962b2c0cf431cf1177b86be8be372717d620495640

Analysis

max time kernel
139s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 23:16

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General

Target

bow.exe
Size

22KB
MD5

9c521c4bc50477b65e51b8c027779b57
SHA1

e9f86154e35c597957be6a47e04ec3f8ca355081
SHA256

001b2843e0af153d71b373962b2c0cf431cf1177b86be8be372717d620495640
SHA512

bf8e44e139fe0c44e47ac182f736e02f0d28222a254883e9e9de6c737ebe1eff5216ea7efdddd1a6b59b06065a7a7afb4f39d7bfda46697b9d67e7aa924335d8
SSDEEP

384:J3MLWHn3kI3fkS0YYpAVgjuxJ3r91CrMbYxPe8:pn3kIcBpAmjC3r9SMbme8

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

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 Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.00075000 BTC Bitcoin Address: bc1qtatuanl0ux447zgmgkz0u0plkdu6wpcqwprweg

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral1/memory/540-0-0x0000000000330000-0x000000000033C000-memory.dmp	family_chaos
behavioral1/files/0x00070000000233f2-6.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	bow.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\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
4004	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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\Pictures\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\SendTo\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\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\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\Admin\Contacts\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\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\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Windows\AccountPictures\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\Recent\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2177723727-746291240-1644359950-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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-1-5-21-2177723727-746291240-1644359950-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 2 IoCs

ransomware

pid	Process
3128	NOTEPAD.EXE
2396	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4004	svchost.exe
2436	vlc.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

pid	Process
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
540	bow.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe
4004	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2436	vlc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	540	bow.exe
Token: SeDebugPrivilege	4004	svchost.exe

Suspicious use of FindShellTrayWindow 10 IoCs

pid	Process
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe

Suspicious use of SendNotifyMessage 9 IoCs

pid	Process
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe
2436	vlc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2436	vlc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 4004	540	bow.exe	92
PID 540 wrote to memory of 4004	540	bow.exe	92
PID 4004 wrote to memory of 3128	4004	svchost.exe	96
PID 4004 wrote to memory of 3128	4004	svchost.exe	96

C:\Users\Admin\AppData\Local\Temp\bow.exe
"C:\Users\Admin\AppData\Local\Temp\bow.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:540
- 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:4004
- - 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:3128

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\ResumeMove.aiff"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:2436

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\read_it.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:2396

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
22KB

MD5
9c521c4bc50477b65e51b8c027779b57

SHA1
e9f86154e35c597957be6a47e04ec3f8ca355081

SHA256
001b2843e0af153d71b373962b2c0cf431cf1177b86be8be372717d620495640

SHA512
bf8e44e139fe0c44e47ac182f736e02f0d28222a254883e9e9de6c737ebe1eff5216ea7efdddd1a6b59b06065a7a7afb4f39d7bfda46697b9d67e7aa924335d8

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

Filesize
879B

MD5
e0b9afe0300098926f26d8c87779b6c3

SHA1
4379bc495053f324fbcba749bd67f12dd3720255

SHA256
38e09652d450eec8ea0898d454ec538f2d0472f17e439b872bfa1b9b3d20ca7c

SHA512
86eabcda01223180a9bca3351257646a6d53681ea5c79383dd5244a2e5cd3ccdd2647ce883cce61178bc689852781b776d0412f5459a56abcc0cffdf21731f3d

Download Submit
memory/540-0-0x0000000000330000-0x000000000033C000-memory.dmp

Filesize
48KB

Download
memory/540-1-0x00007FFEFB0F0000-0x00007FFEFBBB1000-memory.dmp

Filesize
10.8MB

Download
memory/540-14-0x00007FFEFB0F0000-0x00007FFEFBBB1000-memory.dmp

Filesize
10.8MB

Download
memory/2436-86-0x00007FF660C90000-0x00007FF660D88000-memory.dmp

Filesize
992KB

Download
memory/2436-87-0x00007FFEF47C0000-0x00007FFEF47F4000-memory.dmp

Filesize
208KB

Download
memory/2436-88-0x00007FFEF1890000-0x00007FFEF1B46000-memory.dmp

Filesize
2.7MB

Download
memory/2436-89-0x00007FFEF07E0000-0x00007FFEF1890000-memory.dmp

Filesize
16.7MB

Download
memory/2436-90-0x00007FFEF00B0000-0x00007FFEF01BE000-memory.dmp

Filesize
1.1MB

Download
memory/4004-15-0x00007FFEFB0F0000-0x00007FFEFBBB1000-memory.dmp

Filesize
10.8MB

Download
memory/4004-91-0x00007FFEFB0F0000-0x00007FFEFBBB1000-memory.dmp

Filesize
10.8MB

Download