chaos | db4b65445f8a7d1f8827e510affccf6a1fd557daf81b49b50b93beea759153f8

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-03-2024 01:52

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General

Target

d4eb2a62ee12659fab50fbf927a6e9ab.exe
Size

23KB
MD5

d4eb2a62ee12659fab50fbf927a6e9ab
SHA1

529f9e09d02a107d6b50387c976b1209229545aa
SHA256

db4b65445f8a7d1f8827e510affccf6a1fd557daf81b49b50b93beea759153f8
SHA512

2ddd79445b40cb8f8ec5874b0ce2842bc0d6a5045b3d5d35efa7130b3fc88c6c8482499ee2ab6d24919556b69790758469934fae943f0058d1e13a3a11511a9e
SSDEEP

384:oOgHs6cYgBznHTQliJYcxr91CnWzwnbJ/yS:oOgHs7hznzQl2Y4r9FwnbwS

Score

10^/10

chaos ransomware

Malware Config

Extracted

Path

C:\Users\Admin\Documents\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
behavioral2/memory/1648-0-0x0000000000B00000-0x0000000000B0C000-memory.dmp	family_chaos
behavioral2/files/0x0005000000022d26-6.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	d4eb2a62ee12659fab50fbf927a6e9ab.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3508	svchost.exe

Drops desktop.ini file(s) 16 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\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\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3808065738-1666277613-1125846146-1000\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\OneDrive\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\Contacts\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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4148	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3508	svchost.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

pid	Process
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe
3508	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe
Token: SeDebugPrivilege	3508	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 3508	1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe	97
PID 1648 wrote to memory of 3508	1648	d4eb2a62ee12659fab50fbf927a6e9ab.exe	97
PID 3508 wrote to memory of 4148	3508	svchost.exe	106
PID 3508 wrote to memory of 4148	3508	svchost.exe	106

C:\Users\Admin\AppData\Local\Temp\d4eb2a62ee12659fab50fbf927a6e9ab.exe
"C:\Users\Admin\AppData\Local\Temp\d4eb2a62ee12659fab50fbf927a6e9ab.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1648
- 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:3508
- - 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:4148

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3900 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
1⤵
PID:4224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
23KB

MD5
d4eb2a62ee12659fab50fbf927a6e9ab

SHA1
529f9e09d02a107d6b50387c976b1209229545aa

SHA256
db4b65445f8a7d1f8827e510affccf6a1fd557daf81b49b50b93beea759153f8

SHA512
2ddd79445b40cb8f8ec5874b0ce2842bc0d6a5045b3d5d35efa7130b3fc88c6c8482499ee2ab6d24919556b69790758469934fae943f0058d1e13a3a11511a9e

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/1648-0-0x0000000000B00000-0x0000000000B0C000-memory.dmp

Filesize
48KB

Download
memory/1648-1-0x00007FFC3D690000-0x00007FFC3E151000-memory.dmp

Filesize
10.8MB

Download
memory/1648-14-0x00007FFC3D690000-0x00007FFC3E151000-memory.dmp

Filesize
10.8MB

Download
memory/3508-15-0x00007FFC3D690000-0x00007FFC3E151000-memory.dmp

Filesize
10.8MB

Download
memory/3508-238-0x00007FFC3D690000-0x00007FFC3E151000-memory.dmp

Filesize
10.8MB

Download