chaos | d139cf9992044e972e139f409f80f7c944ae0e03541fc3fb85f0e78a1ca03440

Analysis

max time kernel
132s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 19:39

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General

Target

2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
Size

47KB
MD5

825237535c11ac8b38d3227a9b0d68e4
SHA1

afb3d9a122d1f9c5149148ead8fdeabc8f065648
SHA256

d139cf9992044e972e139f409f80f7c944ae0e03541fc3fb85f0e78a1ca03440
SHA512

6d9a7953149d979985f470746f0f53d637e85aaaef6d50b0ee2a4af5654677784b13064caab49f51ac1e9497af13b66c36954f10b7def7ecc8f66e57e1970419
SSDEEP

768:NYqo2ycN9EpGkmc1mEnHr9usUMmT/meMFAavvlXRIrpCZ4EFkrY7IB7e5:Zo21X3lEnHr9uymjBavvlXRSCtFaYMBe

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/3652-0-0x0000000000320000-0x0000000000332000-memory.dmp	family_chaos
behavioral2/files/0x0003000000022975-6.dat	family_chaos

Detects command variations typically used by ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/3652-0-0x0000000000320000-0x0000000000332000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral2/files/0x0003000000022975-6.dat	INDICATOR_SUSPICIOUS_GENRansomware

Renames multiple (207) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 3 IoCs

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_me.txt	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	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\Music\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\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\Internet Explorer\Quick Launch\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\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	F:\$RECYCLE.BIN\S-1-5-21-3726321484-1950364574-433157660-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Administrative Tools\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\Favorites\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\AppData\Roaming\Microsoft\Windows\Recent\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\AccountPictures\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\Documents\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\AppData\Roaming\Microsoft\Windows\SendTo\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\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Libraries\desktop.ini	svchost.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\85pymyogq.jpg"	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-1-5-21-3726321484-1950364574-433157660-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
5104	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4072	svchost.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

pid	Process
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe
4072	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
Token: SeDebugPrivilege	4072	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 4072	3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe	91
PID 3652 wrote to memory of 4072	3652	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe	91
PID 4072 wrote to memory of 5104	4072	svchost.exe	99
PID 4072 wrote to memory of 5104	4072	svchost.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652
- 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)
  - Sets desktop wallpaper using registry
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4072
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_me.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:5104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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

Defacement

T1491

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Downloads

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

Filesize
47KB

MD5
825237535c11ac8b38d3227a9b0d68e4

SHA1
afb3d9a122d1f9c5149148ead8fdeabc8f065648

SHA256
d139cf9992044e972e139f409f80f7c944ae0e03541fc3fb85f0e78a1ca03440

SHA512
6d9a7953149d979985f470746f0f53d637e85aaaef6d50b0ee2a4af5654677784b13064caab49f51ac1e9497af13b66c36954f10b7def7ecc8f66e57e1970419

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

Filesize
211B

MD5
555181e356e52cf25787d4028f1e7388

SHA1
780812b54aa7483f05c2088184f7418a335c2312

SHA256
c7c665cf92588d092af5b0878503c49fb7cceb0a523b43edd819d26aabb84072

SHA512
5bacd730843c8b3e5c09c6bdaea0e03c04f498ead9b9844afb05a61c0a52c8af63ebcd9dddad33ddab93c6a18223e9b89e04eb6faaee9684c204c6599c9e4317

Download Submit
memory/3652-0-0x0000000000320000-0x0000000000332000-memory.dmp

Filesize
72KB

Download
memory/3652-1-0x00007FFBA6863000-0x00007FFBA6865000-memory.dmp

Filesize
8KB

Download
memory/4072-14-0x00007FFBA6860000-0x00007FFBA7321000-memory.dmp

Filesize
10.8MB

Download
memory/4072-483-0x00007FFBA6860000-0x00007FFBA7321000-memory.dmp

Filesize
10.8MB

Download