chaos | c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14

Analysis

max time kernel
91s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
17-10-2022 14:20

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General

Target

c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
Size

22KB
MD5

1a2bafc6b806f8ebfc87844f6f29829b
SHA1

e337773bb1e80a51121f78a52d2b86f293453caa
SHA256

c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14
SHA512

d53bc605620b8d61d0fb9a970fca263d4450a26a1ae842a783891eec1c5a14e2246cb4455be3a497901c059258f19a9d2a0d1cba75f8599cb708829a0f371fdc
SSDEEP

384:C3MLWHn3kI3+PByviFOQConpXlC3AJ+r91Crab5uee:mn3kIqy6qWpU4+r9Sabsee

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 $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
behavioral2/memory/4788-132-0x0000000000BD0000-0x0000000000BDC000-memory.dmp	family_chaos
behavioral2/files/0x0001000000022df1-136.dat	family_chaos
behavioral2/files/0x0001000000022df1-135.dat	family_chaos

Executes dropped EXE 1 IoCs

pid	Process
1548	svchost.exe

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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

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\Desktop\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\SendTo\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\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\Start Menu\Programs\Accessibility\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\Recent\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\Documents\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\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\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\OneDrive\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Start Menu\desktop.ini	svchost.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2664	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1548	svchost.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe
1548	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
Token: SeDebugPrivilege	1548	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4788 wrote to memory of 1548	4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe	84
PID 4788 wrote to memory of 1548	4788	c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe	84
PID 1548 wrote to memory of 2664	1548	svchost.exe	88
PID 1548 wrote to memory of 2664	1548	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe
"C:\Users\Admin\AppData\Local\Temp\c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4788
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Drops startup file
  - Drops desktop.ini file(s)
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1548
- - 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:2664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

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\read_it.txt

Filesize
881B

MD5
c4f2d40600d49cf547b3e627607ad6f2

SHA1
fd3b8a69a7d661fc3cc2c182cb095de59b67a2fe

SHA256
8331cc0f70383289b254912c6180c8df36902513824ad37a23645bd4191f8e6a

SHA512
691c2776dd344af33f5e46badb2615d331fe77eb997d786496a484088e83b1b0d8176a48e826000091637b56c6853ea1519dffdbb36da8b23cf8fab283c991c9

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

Filesize
22KB

MD5
1a2bafc6b806f8ebfc87844f6f29829b

SHA1
e337773bb1e80a51121f78a52d2b86f293453caa

SHA256
c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14

SHA512
d53bc605620b8d61d0fb9a970fca263d4450a26a1ae842a783891eec1c5a14e2246cb4455be3a497901c059258f19a9d2a0d1cba75f8599cb708829a0f371fdc

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

Filesize
22KB

MD5
1a2bafc6b806f8ebfc87844f6f29829b

SHA1
e337773bb1e80a51121f78a52d2b86f293453caa

SHA256
c40400ba6365d44e4bb86faf68fdd0ef0a94813b3bab9da213661de3e92cfd14

SHA512
d53bc605620b8d61d0fb9a970fca263d4450a26a1ae842a783891eec1c5a14e2246cb4455be3a497901c059258f19a9d2a0d1cba75f8599cb708829a0f371fdc

Download Submit
memory/1548-134-0x0000000000000000-mapping.dmp

Download
memory/1548-138-0x00007FFFCDCD0000-0x00007FFFCE791000-memory.dmp

Filesize
10.8MB

Download
memory/1548-141-0x00007FFFCDCD0000-0x00007FFFCE791000-memory.dmp

Filesize
10.8MB

Download
memory/2664-139-0x0000000000000000-mapping.dmp

Download
memory/4788-132-0x0000000000BD0000-0x0000000000BDC000-memory.dmp

Filesize
48KB

Download
memory/4788-133-0x00007FFFCDCD0000-0x00007FFFCE791000-memory.dmp

Filesize
10.8MB

Download
memory/4788-137-0x00007FFFCDCD0000-0x00007FFFCE791000-memory.dmp

Filesize
10.8MB

Download