chaos | f5f9a81c3c3105e9034d3f09a3398d7a6ad4cbcf99c653c14bc19ced0a9bbd50

General

Target

202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
Size

27KB
MD5

4dd53a1b9a5bc8e1c327abfa7774e287
SHA1

220dffcf2a4064f0b01900def851823fa6e9e539
SHA256

202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89
SHA512

cee4524a1462c8272c6e3d404ac603720b02558ab2bd1f23ecb7c53afcafeef48eed10f96d05f1a2450793e8376ce368c770ca43b63931461dc7f0f34ef22588
SSDEEP

384:/FftWZPzzxAm1vp5ZRoDCFKW6pAnAQ5nelEOy5o91lDM5sp/82vG:/FW7zxAmpfyCz6pVQ5fho9kGR82+

Score

10^/10

chaos persistence ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\read_it.txt

Ransom Note

Don't worry, you can return all your files! All your files like documents, photos, databases and other important are encrypted What guarantees do we give to you? You can send 3 of your encrypted files and we decrypt it for free. You must follow these steps To decrypt your files : 1) Write on our e-mail :[email protected] ( In case of no answer in 24 hours check your spam folder or write us to this e-mail: [email protected]) 2) Obtain Bitcoin (You have to pay for decryption in Bitcoins. After payment we will send you the tool that will decrypt all your files.)

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4776-1-0x00000000000C0000-0x00000000000CE000-memory.dmp	family_chaos
C:\Users\Admin\AppData\Roaming\svchost.exe	family_chaos

Chaos 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

Processes:

202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exesvchost.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 2 IoCs

Processes:

svchost.exe

description	ioc	process
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

Processes:

svchost.exe

pid process

1772 svchost.exe
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

pid	process
1772	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	svchost.exe

Drops desktop.ini file(s) 64 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\System Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Local\Microsoft\Windows\Burn\Burn1\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Default\AppData\Local\Microsoft\Windows\WinX\Group2\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2437139445-1151884604-3026847218-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Pictures\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\3D Objects\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\AccountPictures\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\Public\Music\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\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\Default\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\Contacts\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group1\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini	svchost.exe
File opened for modification	C:\Users\Default\AppData\Local\Microsoft\Windows\WinX\Group3\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Application Shortcuts\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\Default\AppData\Local\Microsoft\Windows\WinX\Group1\desktop.ini	svchost.exe
File opened for modification	C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn2\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group2\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Downloads\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\All Users\Microsoft\Windows\Start Menu\Programs\StartUp\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group3\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Windows PowerShell\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\AccountPictures\desktop.ini	svchost.exe

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

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

svchost.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings svchost.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

1792 NOTEPAD.EXE
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exesvchost.exe

pid process

4776 202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
1772 svchost.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	svchost.exe

pid	process
1792	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exesvchost.exe

pid	process
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe
1772	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exesvchost.exe

description	pid	process
Token: SeDebugPrivilege	4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
Token: SeDebugPrivilege	1772	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exesvchost.exe

description	pid	process	target process
PID 4776 wrote to memory of 1772	4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe	svchost.exe
PID 4776 wrote to memory of 1772	4776	202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe	svchost.exe
PID 1772 wrote to memory of 1792	1772	svchost.exe	NOTEPAD.EXE
PID 1772 wrote to memory of 1792	1772	svchost.exe	NOTEPAD.EXE

C:\Users\Admin\AppData\Local\Temp\202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe
"C:\Users\Admin\AppData\Local\Temp\202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4776
- 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
  - Adds Run key to start application
  - Drops desktop.ini file(s)
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1772
- - 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:1792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
C:\Users\Admin\AppData\Local\read_it.txt

Filesize
582B

MD5
ed5cc52876db869de48a4783069c2a5e

SHA1
a9d51ceaeff715ace430f9462ab2ee4e7f33e70e

SHA256
45726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36

SHA512
1745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5

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

Filesize
27KB

MD5
4dd53a1b9a5bc8e1c327abfa7774e287

SHA1
220dffcf2a4064f0b01900def851823fa6e9e539

SHA256
202523606be3b79ee5b59b342404b0c4ec85df4182ceffd97d02fd02effdce89

SHA512
cee4524a1462c8272c6e3d404ac603720b02558ab2bd1f23ecb7c53afcafeef48eed10f96d05f1a2450793e8376ce368c770ca43b63931461dc7f0f34ef22588

Download Submit
C:\Users\Admin\Desktop\DismountSuspend.ico

Filesize
1B

MD5
d1457b72c3fb323a2671125aef3eab5d

SHA1
5bab61eb53176449e25c2c82f172b82cb13ffb9d

SHA256
8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

SHA512
ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

Download Submit
memory/1772-16-0x00007FFD146C0000-0x00007FFD15181000-memory.dmp

Filesize
10.8MB

Download
memory/1772-1259-0x00007FFD146C0000-0x00007FFD15181000-memory.dmp

Filesize
10.8MB

Download
memory/4776-0-0x00007FFD146C3000-0x00007FFD146C5000-memory.dmp

Filesize
8KB

Download
memory/4776-1-0x00000000000C0000-0x00000000000CE000-memory.dmp

Filesize
56KB

Download
memory/4776-2-0x00007FFD146C0000-0x00007FFD15181000-memory.dmp

Filesize
10.8MB

Download
memory/4776-15-0x00007FFD146C0000-0x00007FFD15181000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads