chaos | d139cf9992044e972e139f409f80f7c944ae0e03541fc3fb85f0e78a1ca03440

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 3 IoCs

resource	yara_rule
behavioral1/memory/2612-1-0x0000000000E10000-0x0000000000E22000-memory.dmp	family_chaos
behavioral1/memory/2328-7-0x0000000000A80000-0x0000000000A92000-memory.dmp	family_chaos
behavioral1/files/0x000d000000012350-6.dat	family_chaos

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2612-1-0x0000000000E10000-0x0000000000E22000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2328-7-0x0000000000A80000-0x0000000000A92000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000d000000012350-6.dat	INDICATOR_SUSPICIOUS_GENRansomware

Renames multiple (195) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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_me.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2328	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\Videos\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\Start Menu\Programs\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\Favorites\Links\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\Public\Music\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\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\Recent\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\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
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\Administrative Tools\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\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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-1-5-21-3452737119-3959686427-228443150-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8xc093qmn.jpg"	svchost.exe

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

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2712	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2328	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2612	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
2612	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
2328	svchost.exe
2328	svchost.exe
2328	svchost.exe
2328	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe
Token: SeDebugPrivilege	2328	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2328	2612	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe	28
PID 2612 wrote to memory of 2328	2612	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe	28
PID 2612 wrote to memory of 2328	2612	2024-05-04_825237535c11ac8b38d3227a9b0d68e4_destroyer_wannacry.exe	28
PID 2328 wrote to memory of 2712	2328	svchost.exe	30
PID 2328 wrote to memory of 2712	2328	svchost.exe	30
PID 2328 wrote to memory of 2712	2328	svchost.exe	30

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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Sets desktop wallpaper using registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2328
- - 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:2712

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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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/2328-7-0x0000000000A80000-0x0000000000A92000-memory.dmp

Filesize
72KB

Download
memory/2328-12-0x000007FEF5D40000-0x000007FEF672C000-memory.dmp

Filesize
9.9MB

Download
memory/2328-18-0x000007FEF5D40000-0x000007FEF672C000-memory.dmp

Filesize
9.9MB

Download
memory/2328-454-0x000007FEF5D40000-0x000007FEF672C000-memory.dmp

Filesize
9.9MB

Download
memory/2612-0-0x000007FEF5D43000-0x000007FEF5D44000-memory.dmp

Filesize
4KB

Download
memory/2612-1-0x0000000000E10000-0x0000000000E22000-memory.dmp

Filesize
72KB

Download