chaos | fb992b061173e96c9b3290fe7370fe937b0f1a6326a0070423caa1ea82b910d5

Resubmissions

17-02-2024 03:17

240217-ds1rqsac8t 10

17-02-2024 02:41

240217-c6pqysae92 10

Analysis

max time kernel
1669s
max time network
1646s
platform
windows11-21h2_x64
resource
win11-20240214-en
resource tags

arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
submitted
17-02-2024 03:17

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General

Target

2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
Size

21KB
MD5

c09a3f2e029a40c3b355e4deaf789f86
SHA1

9101fe519c536ba5cc5bfe4def3392aec33b78b4
SHA256

fb992b061173e96c9b3290fe7370fe937b0f1a6326a0070423caa1ea82b910d5
SHA512

d882d9d87112d0fbe81bcd7038734a27d508055ab05e0c426ffd2a70d267d13f057afec2736d946c8a99690189e6fc650eca47a0b21676c25a786946af212018
SSDEEP

384:e3Mg/bqo2mRnG38p+SuqwFWLJRr91CHXPRe9:cqo2Ap+DT89Rr945e9

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/4592-0-0x0000000000460000-0x000000000046C000-memory.dmp	family_chaos
behavioral2/files/0x000200000002a7e4-6.dat	family_chaos

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\read_it.txt	svchost.exe
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

Executes dropped EXE 1 IoCs

pid	Process
2356	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\Documents\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\Libraries\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\Public\Pictures\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\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\Start Menu\Programs\Accessibility\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Videos\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\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	F:\$RECYCLE.BIN\S-1-5-21-176679640-153325197-3537295364-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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-1-5-21-176679640-153325197-3537295364-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
860	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2356	svchost.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe
2356	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
Token: SeDebugPrivilege	2356	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 2356	4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe	81
PID 4592 wrote to memory of 2356	4592	2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe	81
PID 2356 wrote to memory of 860	2356	svchost.exe	83
PID 2356 wrote to memory of 860	2356	svchost.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_c09a3f2e029a40c3b355e4deaf789f86_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4592
- 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)
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2356
- - 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:860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

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Downloads

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

Filesize
21KB

MD5
c09a3f2e029a40c3b355e4deaf789f86

SHA1
9101fe519c536ba5cc5bfe4def3392aec33b78b4

SHA256
fb992b061173e96c9b3290fe7370fe937b0f1a6326a0070423caa1ea82b910d5

SHA512
d882d9d87112d0fbe81bcd7038734a27d508055ab05e0c426ffd2a70d267d13f057afec2736d946c8a99690189e6fc650eca47a0b21676c25a786946af212018

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

Filesize
5B

MD5
584da0a485f209242059e6de66aac904

SHA1
0250a7b095bc6a969adbe25de14d23c4224d37c3

SHA256
01f9bf4bb49ac52d7d7a7d61f79e51c2cba94c5f75e034143ea614f0d87b929c

SHA512
c44088e8f19a177b9f47f0c8f0e1c86083a0b9dbc61f4fb4faa104be1b978ac75d037e6aa0cb4de577cea01b118f3d202659b8501948d7a539f2e13d6d0fe4f4

Download Submit
memory/2356-14-0x00007FFD76390000-0x00007FFD76E52000-memory.dmp

Filesize
10.8MB

Download
memory/2356-457-0x00007FFD76390000-0x00007FFD76E52000-memory.dmp

Filesize
10.8MB

Download
memory/4592-0-0x0000000000460000-0x000000000046C000-memory.dmp

Filesize
48KB

Download
memory/4592-1-0x00007FFD76390000-0x00007FFD76E52000-memory.dmp

Filesize
10.8MB

Download
memory/4592-15-0x00007FFD76390000-0x00007FFD76E52000-memory.dmp

Filesize
10.8MB

Download