chaos | 752876be9feb1b458db5fba7eec916a284d70b0eede6b4f837221fd4e8ca1590

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-11-2024 05:24

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General

Target

2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe
Size

21KB
MD5

eb28bcbc53a0485a114aad710bd587b5
SHA1

c48a04b3620f663ffeb5aa856af4a503807d9126
SHA256

752876be9feb1b458db5fba7eec916a284d70b0eede6b4f837221fd4e8ca1590
SHA512

ab1c0eed70aca5d86bad8a1a474a74964027bd1ce2c1436e70dd33cdafa91009792f6ebe63fe28dbe81857fa0a2db6821d0a348d6a30ae5e3a430b374c347e5f
SSDEEP

384:33MLWHn3kIkfJ/o7p2F3+rJ8r91Cr1heS:Dn3kIgSp2Fq8r9SLeS

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/2344-1-0x0000000000CB0000-0x0000000000CBC000-memory.dmp	family_chaos
behavioral1/files/0x00090000000122ea-5.dat	family_chaos
behavioral1/memory/1728-7-0x0000000000D00000-0x0000000000D0C000-memory.dmp	family_chaos

Chaos family
chaos

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
1728	svchost.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\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\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\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\Roaming\Microsoft\Windows\Recent\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1488793075-819845221-1497111674-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Pictures\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\SendTo\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\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	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\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

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
2560	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1728	svchost.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2344	2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe
2344	2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe
2344	2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe
1728	svchost.exe
1728	svchost.exe
1728	svchost.exe
1728	svchost.exe
1728	svchost.exe
1728	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	1728	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 1728	2344	2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe	32
PID 2344 wrote to memory of 1728	2344	2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe	32
PID 2344 wrote to memory of 1728	2344	2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe	32
PID 1728 wrote to memory of 2560	1728	svchost.exe	33
PID 1728 wrote to memory of 2560	1728	svchost.exe	33
PID 1728 wrote to memory of 2560	1728	svchost.exe	33

C:\Users\Admin\AppData\Local\Temp\2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-04_eb28bcbc53a0485a114aad710bd587b5_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2344
- 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)
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1728
- - 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:2560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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
eb28bcbc53a0485a114aad710bd587b5

SHA1
c48a04b3620f663ffeb5aa856af4a503807d9126

SHA256
752876be9feb1b458db5fba7eec916a284d70b0eede6b4f837221fd4e8ca1590

SHA512
ab1c0eed70aca5d86bad8a1a474a74964027bd1ce2c1436e70dd33cdafa91009792f6ebe63fe28dbe81857fa0a2db6821d0a348d6a30ae5e3a430b374c347e5f

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

Filesize
46B

MD5
c88e72b4d57ee0f7ce21c38508560f8f

SHA1
891c51f8655586779218999605bd3cb1b9f1e2d2

SHA256
409471479757b9a066392e3f07d847204eb55a5a0d29687327f1fcb8e6085832

SHA512
5f70fe453181d94b9d6aaed105efc9d829d7c3aa41712d9d0040bf5c4caf1867b101ec69f8af5080679feb306ba943d1aa5165266c33bcc50b471fe52993a7aa

Download Submit
memory/1728-7-0x0000000000D00000-0x0000000000D0C000-memory.dmp

Filesize
48KB

Download
memory/1728-17-0x000007FEF5730000-0x000007FEF611C000-memory.dmp

Filesize
9.9MB

Download
memory/1728-74-0x000007FEF5730000-0x000007FEF611C000-memory.dmp

Filesize
9.9MB

Download
memory/1728-75-0x000007FEF5730000-0x000007FEF611C000-memory.dmp

Filesize
9.9MB

Download
memory/2344-0-0x000007FEF5733000-0x000007FEF5734000-memory.dmp

Filesize
4KB

Download
memory/2344-1-0x0000000000CB0000-0x0000000000CBC000-memory.dmp

Filesize
48KB

Download