chaos | dec9588aefc7946cb268cb4ab431b28b5b46049ca7694ff5ab9287d88810f05f

Analysis

max time kernel
94s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
31-07-2024 10:34

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General

Target

9eb0850b7d4894ba5ee48aa159e22e00N.exe
Size

22KB
MD5

9eb0850b7d4894ba5ee48aa159e22e00
SHA1

63b409a04c83a294787cccde68106c6f0cf133bf
SHA256

dec9588aefc7946cb268cb4ab431b28b5b46049ca7694ff5ab9287d88810f05f
SHA512

c2447d22324b05647f46b720a17215049e73f484c33729f9caf3da1475a2a5591bf661e43ca415bbf6e1a3b3564bbb0ed9fd72b2f3a70c2093f5fc4f8bfd6e79
SSDEEP

384:73MLWHn3kI3fcSxlR2WpsVPCQoNbJer91Crxb51eJ:nn3kIE69pfQCer9Sxb7eJ

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 3 IoCs

resource	yara_rule
behavioral1/memory/376-1-0x00000000011F0000-0x00000000011FC000-memory.dmp	family_chaos
behavioral1/files/0x000b00000001225e-5.dat	family_chaos
behavioral1/memory/2304-8-0x0000000000920000-0x000000000092C000-memory.dmp	family_chaos

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
2304	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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Start Menu\Programs\Accessories\Accessibility\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\Public\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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
File opened for modification	C:\Users\Admin\Searches\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\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\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	svchost.exe

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

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2876	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2304	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
376	9eb0850b7d4894ba5ee48aa159e22e00N.exe
376	9eb0850b7d4894ba5ee48aa159e22e00N.exe
376	9eb0850b7d4894ba5ee48aa159e22e00N.exe
2304	svchost.exe
2304	svchost.exe
2304	svchost.exe
2304	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	376	9eb0850b7d4894ba5ee48aa159e22e00N.exe
Token: SeDebugPrivilege	2304	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 376 wrote to memory of 2304	376	9eb0850b7d4894ba5ee48aa159e22e00N.exe	31
PID 376 wrote to memory of 2304	376	9eb0850b7d4894ba5ee48aa159e22e00N.exe	31
PID 376 wrote to memory of 2304	376	9eb0850b7d4894ba5ee48aa159e22e00N.exe	31
PID 2304 wrote to memory of 2876	2304	svchost.exe	32
PID 2304 wrote to memory of 2876	2304	svchost.exe	32
PID 2304 wrote to memory of 2876	2304	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\9eb0850b7d4894ba5ee48aa159e22e00N.exe
"C:\Users\Admin\AppData\Local\Temp\9eb0850b7d4894ba5ee48aa159e22e00N.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:376
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2304
- - 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:2876

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

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
9eb0850b7d4894ba5ee48aa159e22e00

SHA1
63b409a04c83a294787cccde68106c6f0cf133bf

SHA256
dec9588aefc7946cb268cb4ab431b28b5b46049ca7694ff5ab9287d88810f05f

SHA512
c2447d22324b05647f46b720a17215049e73f484c33729f9caf3da1475a2a5591bf661e43ca415bbf6e1a3b3564bbb0ed9fd72b2f3a70c2093f5fc4f8bfd6e79

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/376-0-0x000007FEF5F73000-0x000007FEF5F74000-memory.dmp

Filesize
4KB

Download
memory/376-1-0x00000000011F0000-0x00000000011FC000-memory.dmp

Filesize
48KB

Download
memory/2304-7-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/2304-8-0x0000000000920000-0x000000000092C000-memory.dmp

Filesize
48KB

Download
memory/2304-73-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp

Filesize
9.9MB

Download
memory/2304-74-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/2304-75-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp

Filesize
9.9MB

Download