chaos | bf0c353bf4f59db1d33b62589cca64d29c915d3073c86cd04e78f1d28bb65d74

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
18-06-2024 17:25

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General

Target

2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe
Size

61KB
MD5

692028a15d45c37361cd9ebd91aa2182
SHA1

f2d2160758e0ae0d0db22fb4524947d9597aa890
SHA256

bf0c353bf4f59db1d33b62589cca64d29c915d3073c86cd04e78f1d28bb65d74
SHA512

220738ff8de81abfbedca6288ed78c04405f6499b4a2bdfea6f683fd57ddf702bd6988324bcb501b810d4a780147b13aa45714b9dce295a21a028848cf48f0c4
SSDEEP

768:cRp27mtc9Fe87E8L/+5nXWl6/JsNySGc7Q/duS+mD3eiUWGbYxDW:cv2Ec9Fe8FL2JWl6/JnVd/duS+jiri

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/2872-1-0x0000000000AE0000-0x0000000000AF6000-memory.dmp	family_chaos
behavioral1/files/0x000c000000012707-5.dat	family_chaos
behavioral1/memory/2956-7-0x0000000000EF0000-0x0000000000F06000-memory.dmp	family_chaos

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2872-1-0x0000000000AE0000-0x0000000000AF6000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000c000000012707-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2956-7-0x0000000000EF0000-0x0000000000F06000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Renames multiple (175) 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_it_cobra.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2956	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) 64 IoCs

description	ioc	Process
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\CM2WAJS5\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\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\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\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\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\KEQD8ZAD\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\HL1JTUOY\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\Public\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\NNULH633\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\OQAMAYIL\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Ringtones\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\Public\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\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\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Public\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\AppData\Local\Microsoft\Feeds Cache\66RFTKYZ\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\5VY10BSW\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Recorded TV\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Recorded TV\Sample Media\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\M221U1AY\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\Default\AppData\Roaming\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\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\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\Accessories\Windows PowerShell\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\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-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\xci4drjwu.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
1544	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2956	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2872	2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe
2872	2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe
2956	svchost.exe
2956	svchost.exe
2956	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe
Token: SeDebugPrivilege	2956	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2956	2872	2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe	28
PID 2872 wrote to memory of 2956	2872	2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe	28
PID 2872 wrote to memory of 2956	2872	2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe	28
PID 2956 wrote to memory of 1544	2956	svchost.exe	30
PID 2956 wrote to memory of 1544	2956	svchost.exe	30
PID 2956 wrote to memory of 1544	2956	svchost.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-18_692028a15d45c37361cd9ebd91aa2182_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872
- 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:2956
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it_cobra.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1544

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\Local\Google\Chrome\User Data\Crashpad\read_it_cobra.txt

Filesize
1KB

MD5
03ca3f35476cce37c86b137b3fdcbac2

SHA1
ab0d0c2ec7af3f3cd3c6517cae4f3c1bdf25b1bb

SHA256
b88da19f24b732056f1a06211d6d1a75314c2d55cd93deca96d708b6e6ae6fbc

SHA512
9ebc65df4e1c7ad5a5888edf254a1da3cfccb88bd5a69b8d5cec9bfc6681487bdc30ea1ae84e015887181c6ed8d1d4807f1837d7deb4fd1fc7f391e273ca78aa

Download Submit
C:\Users\Admin\AppData\Roaming\GrantAdd.txt

Filesize
1B

MD5
d1457b72c3fb323a2671125aef3eab5d

SHA1
5bab61eb53176449e25c2c82f172b82cb13ffb9d

SHA256
8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

SHA512
ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

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

Filesize
61KB

MD5
692028a15d45c37361cd9ebd91aa2182

SHA1
f2d2160758e0ae0d0db22fb4524947d9597aa890

SHA256
bf0c353bf4f59db1d33b62589cca64d29c915d3073c86cd04e78f1d28bb65d74

SHA512
220738ff8de81abfbedca6288ed78c04405f6499b4a2bdfea6f683fd57ddf702bd6988324bcb501b810d4a780147b13aa45714b9dce295a21a028848cf48f0c4

Download Submit
memory/2872-0-0x000007FEF5913000-0x000007FEF5914000-memory.dmp

Filesize
4KB

Download
memory/2872-1-0x0000000000AE0000-0x0000000000AF6000-memory.dmp

Filesize
88KB

Download
memory/2956-7-0x0000000000EF0000-0x0000000000F06000-memory.dmp

Filesize
88KB

Download
memory/2956-8-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

Filesize
9.9MB

Download
memory/2956-87-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

Filesize
9.9MB

Download
memory/2956-897-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

Filesize
9.9MB

Download