chaos | 2baa450fe71d29480b0dcf27977c156a7b3cb37f29d27f6e3fd49e2dea1abebe

General

Target

Microsoft Edge.exe
Size

218KB
MD5

c6f844c748dfaa9db24483c45fcfb31f
SHA1

8c3df16117b524addb56511f31df703c8ec3c172
SHA256

2baa450fe71d29480b0dcf27977c156a7b3cb37f29d27f6e3fd49e2dea1abebe
SHA512

d5990baeded8878005f5beb16d386454658bd29effa9657a5cc4f20056816421e01d335c22ef4bfb90f8157262dde76226ac194d2a36fe1c8f206cbcf8c38dfc

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\READ_ME.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\Microsoft Edge.exe	family_chaos
C:\Users\Admin\AppData\Roaming\Microsoft Edge.exe	family_chaos

Executes dropped EXE 1 IoCs

Processes:

Microsoft Edge.exe

pid process

1396 Microsoft Edge.exe

pid	process
1396	Microsoft Edge.exe

Drops startup file 3 IoCs

Processes:

Microsoft Edge.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Microsoft Edge.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\READ_ME.txt	Microsoft Edge.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Edge.url	Microsoft Edge.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) 33 IoCs

Processes:

Microsoft Edge.exe

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

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

System Information Discovery
T1082
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

960 NOTEPAD.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Microsoft Edge.exe

pid process

1396 Microsoft Edge.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Microsoft Edge.exeMicrosoft Edge.exe

pid process

836 Microsoft Edge.exe
1396 Microsoft Edge.exe
1396 Microsoft Edge.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Microsoft Edge.exeMicrosoft Edge.exe

description pid process

Token: SeDebugPrivilege 836 Microsoft Edge.exe
Token: SeDebugPrivilege 1396 Microsoft Edge.exe

pid	process
960	NOTEPAD.EXE

pid	process
1396	Microsoft Edge.exe

pid	process
836	Microsoft Edge.exe
1396	Microsoft Edge.exe
1396	Microsoft Edge.exe

description	pid	process
Token: SeDebugPrivilege	836	Microsoft Edge.exe
Token: SeDebugPrivilege	1396	Microsoft Edge.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Microsoft Edge.exeMicrosoft Edge.exe

description	pid	process	target process
PID 836 wrote to memory of 1396	836	Microsoft Edge.exe	Microsoft Edge.exe
PID 836 wrote to memory of 1396	836	Microsoft Edge.exe	Microsoft Edge.exe
PID 836 wrote to memory of 1396	836	Microsoft Edge.exe	Microsoft Edge.exe
PID 1396 wrote to memory of 960	1396	Microsoft Edge.exe	NOTEPAD.EXE
PID 1396 wrote to memory of 960	1396	Microsoft Edge.exe	NOTEPAD.EXE
PID 1396 wrote to memory of 960	1396	Microsoft Edge.exe	NOTEPAD.EXE

C:\Users\Admin\AppData\Local\Temp\Microsoft Edge.exe
"C:\Users\Admin\AppData\Local\Temp\Microsoft Edge.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Roaming\Microsoft Edge.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft Edge.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Drops desktop.ini file(s)
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1396
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ_ME.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:960

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\Microsoft Edge.exe

MD5
c6f844c748dfaa9db24483c45fcfb31f

SHA1
8c3df16117b524addb56511f31df703c8ec3c172

SHA256
2baa450fe71d29480b0dcf27977c156a7b3cb37f29d27f6e3fd49e2dea1abebe

SHA512
d5990baeded8878005f5beb16d386454658bd29effa9657a5cc4f20056816421e01d335c22ef4bfb90f8157262dde76226ac194d2a36fe1c8f206cbcf8c38dfc

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft Edge.exe

MD5
c6f844c748dfaa9db24483c45fcfb31f

SHA1
8c3df16117b524addb56511f31df703c8ec3c172

SHA256
2baa450fe71d29480b0dcf27977c156a7b3cb37f29d27f6e3fd49e2dea1abebe

SHA512
d5990baeded8878005f5beb16d386454658bd29effa9657a5cc4f20056816421e01d335c22ef4bfb90f8157262dde76226ac194d2a36fe1c8f206cbcf8c38dfc

Download Submit
C:\Users\Admin\AppData\Roaming\READ_ME.txt

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/836-55-0x00000000012F0000-0x00000000012F1000-memory.dmp

Filesize
4KB

Download
memory/960-62-0x0000000000000000-mapping.dmp

Download
memory/960-63-0x000007FEFBB71000-0x000007FEFBB73000-memory.dmp

Filesize
8KB

Download
memory/1396-57-0x0000000000000000-mapping.dmp

Download
memory/1396-60-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

Filesize
4KB

Download
memory/1396-65-0x000000001AE70000-0x000000001AE72000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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