chaos | b7e4587f99764ac6f52f26a06a6aca5bb9041c7f5501114ab10ba1f1fa8afbda

General

Target

2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe
Size

23KB
MD5

3ed020bc2731ffa944c786ac70026733
SHA1

598b4ae87879bc68cba7a73fb7e6b4cca2b39375
SHA256

b7e4587f99764ac6f52f26a06a6aca5bb9041c7f5501114ab10ba1f1fa8afbda
SHA512

fcd846fab1ee2c1cbb28f23aa93b884a483c6638fed607e5c0a1bed76d6bcde79e3248a7e29b9f463e9792ab796e5a8609daabeed3341ce8fcae8fba58cd93e9
SSDEEP

384:r3Mg/bqo2mcxtivp1AN4+X0Z/NJjr91C+xb52ew:Nqo2ptMp1g4+kR7jr9Nxbkew

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

chaos

Ransom Note

----> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help.What can I do to get my files back?You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1620-0-0x0000000000030000-0x000000000003C000-memory.dmp	family_chaos
C:\Users\Admin\AppData\Roaming\svchost.exe	family_chaos
behavioral1/memory/2212-7-0x0000000000020000-0x000000000002C000-memory.dmp	family_chaos

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Detects command variations typically used by ransomware 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1620-0-0x0000000000030000-0x000000000003C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
C:\Users\Admin\AppData\Roaming\svchost.exe	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2212-7-0x0000000000020000-0x000000000002C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
ransomware evasion

Inhibit System Recovery
T1490

Processes:

bcdedit.exebcdedit.exe

pid process

1320 bcdedit.exe
1244 bcdedit.exe
Deletes backup catalog 3 TTPs 1 IoCs
Uses wbadmin.exe to inhibit system recovery.
ransomware

Command and Scripting Interpreter
T1059

File Deletion
T1070.004

Inhibit System Recovery
T1490

Processes:

wbadmin.exe

pid process

1964 wbadmin.exe

pid	process
1320	bcdedit.exe
1244	bcdedit.exe

pid	process
1964	wbadmin.exe

Drops startup file 3 IoCs

Processes:

svchost.exe

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_it.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

Processes:

svchost.exe

pid process

2212 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

pid	process
2212	svchost.exe

Drops desktop.ini file(s) 34 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Saved Games\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\SendTo\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\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\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\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\Pictures\Sample Pictures\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\Favorites\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\Sample Videos\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\User Pinned\TaskBar\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\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\Links\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\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe

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

System Information Discovery
T1082
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

1844 vssadmin.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

1548 NOTEPAD.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

svchost.exe

pid process

2212 svchost.exe

pid	process
1844	vssadmin.exe

pid	process
1548	NOTEPAD.EXE

pid	process
2212	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exesvchost.exe

pid	process
1620	2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe
1620	2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exesvchost.exevssvc.exeWMIC.exewbengine.exe

description	pid	process
Token: SeDebugPrivilege	1620	2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2212	svchost.exe
Token: SeBackupPrivilege	2640	vssvc.exe
Token: SeRestorePrivilege	2640	vssvc.exe
Token: SeAuditPrivilege	2640	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1564	WMIC.exe
Token: SeSecurityPrivilege	1564	WMIC.exe
Token: SeTakeOwnershipPrivilege	1564	WMIC.exe
Token: SeLoadDriverPrivilege	1564	WMIC.exe
Token: SeSystemProfilePrivilege	1564	WMIC.exe
Token: SeSystemtimePrivilege	1564	WMIC.exe
Token: SeProfSingleProcessPrivilege	1564	WMIC.exe
Token: SeIncBasePriorityPrivilege	1564	WMIC.exe
Token: SeCreatePagefilePrivilege	1564	WMIC.exe
Token: SeBackupPrivilege	1564	WMIC.exe
Token: SeRestorePrivilege	1564	WMIC.exe
Token: SeShutdownPrivilege	1564	WMIC.exe
Token: SeDebugPrivilege	1564	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1564	WMIC.exe
Token: SeRemoteShutdownPrivilege	1564	WMIC.exe
Token: SeUndockPrivilege	1564	WMIC.exe
Token: SeManageVolumePrivilege	1564	WMIC.exe
Token: 33	1564	WMIC.exe
Token: 34	1564	WMIC.exe
Token: 35	1564	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1564	WMIC.exe
Token: SeSecurityPrivilege	1564	WMIC.exe
Token: SeTakeOwnershipPrivilege	1564	WMIC.exe
Token: SeLoadDriverPrivilege	1564	WMIC.exe
Token: SeSystemProfilePrivilege	1564	WMIC.exe
Token: SeSystemtimePrivilege	1564	WMIC.exe
Token: SeProfSingleProcessPrivilege	1564	WMIC.exe
Token: SeIncBasePriorityPrivilege	1564	WMIC.exe
Token: SeCreatePagefilePrivilege	1564	WMIC.exe
Token: SeBackupPrivilege	1564	WMIC.exe
Token: SeRestorePrivilege	1564	WMIC.exe
Token: SeShutdownPrivilege	1564	WMIC.exe
Token: SeDebugPrivilege	1564	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1564	WMIC.exe
Token: SeRemoteShutdownPrivilege	1564	WMIC.exe
Token: SeUndockPrivilege	1564	WMIC.exe
Token: SeManageVolumePrivilege	1564	WMIC.exe
Token: 33	1564	WMIC.exe
Token: 34	1564	WMIC.exe
Token: 35	1564	WMIC.exe
Token: SeBackupPrivilege	1968	wbengine.exe
Token: SeRestorePrivilege	1968	wbengine.exe
Token: SeSecurityPrivilege	1968	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exesvchost.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1620 wrote to memory of 2212	1620	2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe	svchost.exe
PID 1620 wrote to memory of 2212	1620	2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe	svchost.exe
PID 1620 wrote to memory of 2212	1620	2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe	svchost.exe
PID 2212 wrote to memory of 2892	2212	svchost.exe	cmd.exe
PID 2212 wrote to memory of 2892	2212	svchost.exe	cmd.exe
PID 2212 wrote to memory of 2892	2212	svchost.exe	cmd.exe
PID 2892 wrote to memory of 1844	2892	cmd.exe	vssadmin.exe
PID 2892 wrote to memory of 1844	2892	cmd.exe	vssadmin.exe
PID 2892 wrote to memory of 1844	2892	cmd.exe	vssadmin.exe
PID 2892 wrote to memory of 1564	2892	cmd.exe	WMIC.exe
PID 2892 wrote to memory of 1564	2892	cmd.exe	WMIC.exe
PID 2892 wrote to memory of 1564	2892	cmd.exe	WMIC.exe
PID 2212 wrote to memory of 844	2212	svchost.exe	cmd.exe
PID 2212 wrote to memory of 844	2212	svchost.exe	cmd.exe
PID 2212 wrote to memory of 844	2212	svchost.exe	cmd.exe
PID 844 wrote to memory of 1320	844	cmd.exe	bcdedit.exe
PID 844 wrote to memory of 1320	844	cmd.exe	bcdedit.exe
PID 844 wrote to memory of 1320	844	cmd.exe	bcdedit.exe
PID 844 wrote to memory of 1244	844	cmd.exe	bcdedit.exe
PID 844 wrote to memory of 1244	844	cmd.exe	bcdedit.exe
PID 844 wrote to memory of 1244	844	cmd.exe	bcdedit.exe
PID 2212 wrote to memory of 2044	2212	svchost.exe	cmd.exe
PID 2212 wrote to memory of 2044	2212	svchost.exe	cmd.exe
PID 2212 wrote to memory of 2044	2212	svchost.exe	cmd.exe
PID 2044 wrote to memory of 1964	2044	cmd.exe	wbadmin.exe
PID 2044 wrote to memory of 1964	2044	cmd.exe	wbadmin.exe
PID 2044 wrote to memory of 1964	2044	cmd.exe	wbadmin.exe
PID 2212 wrote to memory of 1548	2212	svchost.exe	NOTEPAD.EXE
PID 2212 wrote to memory of 1548	2212	svchost.exe	NOTEPAD.EXE
PID 2212 wrote to memory of 1548	2212	svchost.exe	NOTEPAD.EXE

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_3ed020bc2731ffa944c786ac70026733_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1620

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:2212

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
3⤵
- Suspicious use of WriteProcessMemory
PID:2892

C:\Windows\system32\vssadmin.exe
vssadmin delete shadows /all /quiet
4⤵
- Interacts with shadow copies
PID:1844

C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1564

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
3⤵
- Suspicious use of WriteProcessMemory
PID:844

C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
4⤵
- Modifies boot configuration data using bcdedit
PID:1320

C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled no
4⤵
- Modifies boot configuration data using bcdedit
PID:1244

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
3⤵
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\system32\wbadmin.exe
wbadmin delete catalog -quiet
4⤵
- Deletes backup catalog
PID:1964

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:1548

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2640

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1968

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:664

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:476

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

3

T1070

File Deletion

3

T1070.004

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

4

T1490

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe
Filesize
23KB

MD5
3ed020bc2731ffa944c786ac70026733

SHA1
598b4ae87879bc68cba7a73fb7e6b4cca2b39375

SHA256
b7e4587f99764ac6f52f26a06a6aca5bb9041c7f5501114ab10ba1f1fa8afbda

SHA512
fcd846fab1ee2c1cbb28f23aa93b884a483c6638fed607e5c0a1bed76d6bcde79e3248a7e29b9f463e9792ab796e5a8609daabeed3341ce8fcae8fba58cd93e9

Download Submit
C:\Users\Admin\Documents\read_it.txt
Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/1620-0-0x0000000000030000-0x000000000003C000-memory.dmp

Filesize
48KB

Download
memory/1620-1-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

Filesize
9.9MB

Download
memory/1620-8-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-7-0x0000000000020000-0x000000000002C000-memory.dmp

Filesize
48KB

Download
memory/2212-9-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-11-0x000000001ABE0000-0x000000001AC60000-memory.dmp

Filesize
512KB

Download
memory/2212-449-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-450-0x000000001ABE0000-0x000000001AC60000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads