chaos | 9df83e2914c2364421893bcdf3048ee04a87bb62f94ce31dbcb5a658708ba89a

Analysis

max time kernel
31s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
06/03/2023, 11:20

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General

Target
2023-03-06_84dbf5b66139cf86f87ac1d420c736c9_destroyer_wannacry.exe
Size 23KB
Sample230306-nffadabd4s
SHA256 9df83e2914c2364421893bcdf3048ee04a87bb62f94ce31dbcb5a658708ba89a
MD5 84dbf5b66139cf86f87ac1d420c736c9
SHA1 4ca604aec1c66194182b25c4cc0fdf17ef9eeb7f
SHA512 89be3e89bae993eb19945acb6c4647843eb60b33ceb68f366e878e47b4018a6c45d9427308f32980f90f5c265f752f2be620360bb1d3865276b46bbab02ffbfd
SSDEEP 384:i3Mg/bqo2j81KHNH6l8p7kLOjHJAr91Ck8fUb5jef:Yqo24wHN88peOjpAr9zkUbFef
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Extracted

Path

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

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 5 IoCs

resource	yara_rule
behavioral1/memory/836-54-0x0000000000BA0000-0x0000000000BAC000-memory.dmp	family_chaos
behavioral1/files/0x000a0000000132f5-58.dat	family_chaos
behavioral1/files/0x000a0000000132f5-59.dat	family_chaos
behavioral1/memory/920-60-0x0000000000A30000-0x0000000000A3C000-memory.dmp	family_chaos
behavioral1/memory/920-62-0x000000001AE70000-0x000000001AEF0000-memory.dmp	family_chaos

Modifies extensions of user files 5 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\UnprotectClose.raw => C:\Users\Admin\Pictures\UnprotectClose.raw.4zrw	virus.exe
File renamed	C:\Users\Admin\Pictures\AddUninstall.raw => C:\Users\Admin\Pictures\AddUninstall.raw.xowm	virus.exe
File renamed	C:\Users\Admin\Pictures\ApproveNew.png => C:\Users\Admin\Pictures\ApproveNew.png.7e8y	virus.exe
File renamed	C:\Users\Admin\Pictures\GetAssert.tif => C:\Users\Admin\Pictures\GetAssert.tif.8vuc	virus.exe
File renamed	C:\Users\Admin\Pictures\MeasureGrant.raw => C:\Users\Admin\Pictures\MeasureGrant.raw.2884	virus.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
920	virus.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

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

pid	Process
1524	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
920	virus.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
836	2023-03-06_84dbf5b66139cf86f87ac1d420c736c9_destroyer_wannacry.exe
920	virus.exe
920	virus.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	836	2023-03-06_84dbf5b66139cf86f87ac1d420c736c9_destroyer_wannacry.exe
Token: SeDebugPrivilege	920	virus.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 836 wrote to memory of 920	836	2023-03-06_84dbf5b66139cf86f87ac1d420c736c9_destroyer_wannacry.exe	28
PID 836 wrote to memory of 920	836	2023-03-06_84dbf5b66139cf86f87ac1d420c736c9_destroyer_wannacry.exe	28
PID 836 wrote to memory of 920	836	2023-03-06_84dbf5b66139cf86f87ac1d420c736c9_destroyer_wannacry.exe	28
PID 920 wrote to memory of 1524	920	virus.exe	30
PID 920 wrote to memory of 1524	920	virus.exe	30
PID 920 wrote to memory of 1524	920	virus.exe	30

C:\Users\Admin\AppData\Local\Temp\2023-03-06_84dbf5b66139cf86f87ac1d420c736c9_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2023-03-06_84dbf5b66139cf86f87ac1d420c736c9_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Roaming\virus.exe
  "C:\Users\Admin\AppData\Roaming\virus.exe"
  2⤵
  - Modifies extensions of user files
  - 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:920
- - 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:1524

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

read_it.txt

Path C:\Users\Admin\AppData\Roaming\read_it.txt
Size 964B
SHA256 7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
MD5 4217b8b83ce3c3f70029a056546f8fd0
SHA1 487cdb5733d073a0427418888e8f7070fe782a03
SHA512 2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740
MD5 SHA1 SHA512

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virus.exe

Path C:\Users\Admin\AppData\Roaming\virus.exe
Size 23KB
SHA256 9df83e2914c2364421893bcdf3048ee04a87bb62f94ce31dbcb5a658708ba89a
MD5 84dbf5b66139cf86f87ac1d420c736c9
SHA1 4ca604aec1c66194182b25c4cc0fdf17ef9eeb7f
SHA512 89be3e89bae993eb19945acb6c4647843eb60b33ceb68f366e878e47b4018a6c45d9427308f32980f90f5c265f752f2be620360bb1d3865276b46bbab02ffbfd
SSDEEP 384:i3Mg/bqo2j81KHNH6l8p7kLOjHJAr91Ck8fUb5jef:Yqo24wHN88peOjpAr9zkUbFef
MD5 SHA1 SHA512 SSDEEP

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virus.exe

Path C:\Users\Admin\AppData\Roaming\virus.exe
Size 23KB
SHA256 9df83e2914c2364421893bcdf3048ee04a87bb62f94ce31dbcb5a658708ba89a
MD5 84dbf5b66139cf86f87ac1d420c736c9
SHA1 4ca604aec1c66194182b25c4cc0fdf17ef9eeb7f
SHA512 89be3e89bae993eb19945acb6c4647843eb60b33ceb68f366e878e47b4018a6c45d9427308f32980f90f5c265f752f2be620360bb1d3865276b46bbab02ffbfd
SSDEEP 384:i3Mg/bqo2j81KHNH6l8p7kLOjHJAr91Ck8fUb5jef:Yqo24wHN88peOjpAr9zkUbFef
MD5 SHA1 SHA512 SSDEEP

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read_it.txt

Path C:\Users\Admin\Downloads\read_it.txt
Size 964B
SHA256 7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
MD5 4217b8b83ce3c3f70029a056546f8fd0
SHA1 487cdb5733d073a0427418888e8f7070fe782a03
SHA512 2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740
MD5 SHA1 SHA512

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memory/836-54-0x0000000000BA0000-0x0000000000BAC000-memory.dmp

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memory/920-60-0x0000000000A30000-0x0000000000A3C000-memory.dmp

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memory/920-62-0x000000001AE70000-0x000000001AEF0000-memory.dmp

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memory/920-523-0x000000001AE70000-0x000000001AEF0000-memory.dmp

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