chaos | c0670eb1d76dd75a08a3528919a93bbb8398b55ba34dc749673cc1ce7cd33436

Analysis

max time kernel
421s
max time network
423s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-08-2024 13:45

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General

Target

randsomware.exe
Size

23KB
MD5

d5440a95def9346312619fd007f4926d
SHA1

5565b91e8c947e78187d3aa4988699efe176aa92
SHA256

c0670eb1d76dd75a08a3528919a93bbb8398b55ba34dc749673cc1ce7cd33436
SHA512

2107241f6ae50ce5e74a7c9042e51af53ca53c88066dd753716bd81ab0f91936bbf2e45b3d713c3899f434075062ee0cac071b05069a815109aa49dad983d277
SSDEEP

384:r3MLWHn3kI3ShqoIQpClC3NRUJ2r91CrLb5ZeB:3n3kIdLQppdR82r9SLbjeB

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
behavioral1/memory/4980-0-0x0000000000C20000-0x0000000000C2C000-memory.dmp	family_chaos
behavioral1/files/0x0008000000023479-6.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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	randsomware.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\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
2840	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\OneDrive\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\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\AppData\Roaming\Microsoft\Windows\Recent\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\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\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\Admin\Links\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\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\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\Desktop\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\Searches\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\SendTo\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2412658365-3084825385-3340777666-1000\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\Accessories\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3512	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
2840	svchost.exe
856	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
4980	randsomware.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe
2840	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4980	randsomware.exe
Token: SeDebugPrivilege	2840	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 2840	4980	randsomware.exe	87
PID 4980 wrote to memory of 2840	4980	randsomware.exe	87
PID 2840 wrote to memory of 3512	2840	svchost.exe	88
PID 2840 wrote to memory of 3512	2840	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\randsomware.exe
"C:\Users\Admin\AppData\Local\Temp\randsomware.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4980
- 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:2840
- - 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:3512

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\Desktop\UnprotectWatch.xlsx"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:856

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

Filesize
350B

MD5
8e876c23ccb8c02897e043b56e4f137c

SHA1
1b40a47f8a5e79bd47292219bacee6c4132a16d2

SHA256
ef1d7c71adc9769d89a5e856b4eff2203232bbf68a70952dc33d3ee90499de49

SHA512
5ce61800b736a2cea4c35fab7492775b7c0e73765f293077394b59f95311389260aff09d739ff2bab5c35bfc58cd2a7304c40e2705eab11197b0216e725245a3

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

Filesize
23KB

MD5
d5440a95def9346312619fd007f4926d

SHA1
5565b91e8c947e78187d3aa4988699efe176aa92

SHA256
c0670eb1d76dd75a08a3528919a93bbb8398b55ba34dc749673cc1ce7cd33436

SHA512
2107241f6ae50ce5e74a7c9042e51af53ca53c88066dd753716bd81ab0f91936bbf2e45b3d713c3899f434075062ee0cac071b05069a815109aa49dad983d277

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/856-76-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/856-78-0x00007FFC856A0000-0x00007FFC856B0000-memory.dmp

Filesize
64KB

Download
memory/856-72-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/856-74-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/856-73-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/856-75-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/856-112-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/856-77-0x00007FFC856A0000-0x00007FFC856B0000-memory.dmp

Filesize
64KB

Download
memory/856-111-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/856-109-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/856-110-0x00007FFC87BF0000-0x00007FFC87C00000-memory.dmp

Filesize
64KB

Download
memory/2840-14-0x00007FFCA9790000-0x00007FFCAA251000-memory.dmp

Filesize
10.8MB

Download
memory/2840-113-0x00007FFCA9790000-0x00007FFCAA251000-memory.dmp

Filesize
10.8MB

Download
memory/4980-1-0x00007FFCA9793000-0x00007FFCA9795000-memory.dmp

Filesize
8KB

Download
memory/4980-0-0x0000000000C20000-0x0000000000C2C000-memory.dmp

Filesize
48KB

Download