chaos | ca091bb2a571373745d6c0056c0631da60b1246b5983b111a727281a8c4ae3ab

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
24-04-2024 04:30

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General

Target

2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe
Size

23KB
MD5

4e0c54d61cf300429aeeaa2419b63ca7
SHA1

f20b5d8eb5ff36fa02a7bbe65af817a2fb4f19d3
SHA256

ca091bb2a571373745d6c0056c0631da60b1246b5983b111a727281a8c4ae3ab
SHA512

f7f0487380ecd0367e42885d6cc4cc515436cef05b1b59a14a477dcb651c8bea8e5c4400109a8abf61bd0f8a347894c23ba8bdecfff640a82c894404f3ddc818
SSDEEP

384:y3Mg/bqo2mcxtivpZqjuwzUrJlr91CIaxb5Ues:Iqo2ptMpgjKdlr9Naxbees

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

resource	yara_rule
behavioral1/memory/2860-0-0x00000000001F0000-0x00000000001FC000-memory.dmp	family_chaos
behavioral1/files/0x000b00000001224c-5.dat	family_chaos
behavioral1/memory/2704-7-0x0000000001330000-0x000000000133C000-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

resource	yara_rule
behavioral1/memory/2860-0-0x00000000001F0000-0x00000000001FC000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000b00000001224c-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2704-7-0x0000000001330000-0x000000000133C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1192	bcdedit.exe
1248	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

pid	Process
2032	wbadmin.exe

Drops startup file 3 IoCs

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

pid	Process
2704	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\Saved Games\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\Documents\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\Videos\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\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\Programs\Administrative Tools\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\Downloads\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\Start Menu\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\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\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\Public\Music\Sample Music\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\Searches\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

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

pid	Process
1944	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
336	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2704	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2860	2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe
2860	2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe
2704	svchost.exe
2704	svchost.exe
2704	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2704	svchost.exe
Token: SeBackupPrivilege	1564	vssvc.exe
Token: SeRestorePrivilege	1564	vssvc.exe
Token: SeAuditPrivilege	1564	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1736	WMIC.exe
Token: SeSecurityPrivilege	1736	WMIC.exe
Token: SeTakeOwnershipPrivilege	1736	WMIC.exe
Token: SeLoadDriverPrivilege	1736	WMIC.exe
Token: SeSystemProfilePrivilege	1736	WMIC.exe
Token: SeSystemtimePrivilege	1736	WMIC.exe
Token: SeProfSingleProcessPrivilege	1736	WMIC.exe
Token: SeIncBasePriorityPrivilege	1736	WMIC.exe
Token: SeCreatePagefilePrivilege	1736	WMIC.exe
Token: SeBackupPrivilege	1736	WMIC.exe
Token: SeRestorePrivilege	1736	WMIC.exe
Token: SeShutdownPrivilege	1736	WMIC.exe
Token: SeDebugPrivilege	1736	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1736	WMIC.exe
Token: SeRemoteShutdownPrivilege	1736	WMIC.exe
Token: SeUndockPrivilege	1736	WMIC.exe
Token: SeManageVolumePrivilege	1736	WMIC.exe
Token: 33	1736	WMIC.exe
Token: 34	1736	WMIC.exe
Token: 35	1736	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1736	WMIC.exe
Token: SeSecurityPrivilege	1736	WMIC.exe
Token: SeTakeOwnershipPrivilege	1736	WMIC.exe
Token: SeLoadDriverPrivilege	1736	WMIC.exe
Token: SeSystemProfilePrivilege	1736	WMIC.exe
Token: SeSystemtimePrivilege	1736	WMIC.exe
Token: SeProfSingleProcessPrivilege	1736	WMIC.exe
Token: SeIncBasePriorityPrivilege	1736	WMIC.exe
Token: SeCreatePagefilePrivilege	1736	WMIC.exe
Token: SeBackupPrivilege	1736	WMIC.exe
Token: SeRestorePrivilege	1736	WMIC.exe
Token: SeShutdownPrivilege	1736	WMIC.exe
Token: SeDebugPrivilege	1736	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1736	WMIC.exe
Token: SeRemoteShutdownPrivilege	1736	WMIC.exe
Token: SeUndockPrivilege	1736	WMIC.exe
Token: SeManageVolumePrivilege	1736	WMIC.exe
Token: 33	1736	WMIC.exe
Token: 34	1736	WMIC.exe
Token: 35	1736	WMIC.exe
Token: SeBackupPrivilege	2244	wbengine.exe
Token: SeRestorePrivilege	2244	wbengine.exe
Token: SeSecurityPrivilege	2244	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2704	2860	2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe	28
PID 2860 wrote to memory of 2704	2860	2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe	28
PID 2860 wrote to memory of 2704	2860	2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe	28
PID 2704 wrote to memory of 2892	2704	svchost.exe	30
PID 2704 wrote to memory of 2892	2704	svchost.exe	30
PID 2704 wrote to memory of 2892	2704	svchost.exe	30
PID 2892 wrote to memory of 1944	2892	cmd.exe	32
PID 2892 wrote to memory of 1944	2892	cmd.exe	32
PID 2892 wrote to memory of 1944	2892	cmd.exe	32
PID 2892 wrote to memory of 1736	2892	cmd.exe	35
PID 2892 wrote to memory of 1736	2892	cmd.exe	35
PID 2892 wrote to memory of 1736	2892	cmd.exe	35
PID 2704 wrote to memory of 1408	2704	svchost.exe	37
PID 2704 wrote to memory of 1408	2704	svchost.exe	37
PID 2704 wrote to memory of 1408	2704	svchost.exe	37
PID 1408 wrote to memory of 1192	1408	cmd.exe	39
PID 1408 wrote to memory of 1192	1408	cmd.exe	39
PID 1408 wrote to memory of 1192	1408	cmd.exe	39
PID 1408 wrote to memory of 1248	1408	cmd.exe	40
PID 1408 wrote to memory of 1248	1408	cmd.exe	40
PID 1408 wrote to memory of 1248	1408	cmd.exe	40
PID 2704 wrote to memory of 2176	2704	svchost.exe	41
PID 2704 wrote to memory of 2176	2704	svchost.exe	41
PID 2704 wrote to memory of 2176	2704	svchost.exe	41
PID 2176 wrote to memory of 2032	2176	cmd.exe	43
PID 2176 wrote to memory of 2032	2176	cmd.exe	43
PID 2176 wrote to memory of 2032	2176	cmd.exe	43
PID 2704 wrote to memory of 336	2704	svchost.exe	47
PID 2704 wrote to memory of 336	2704	svchost.exe	47
PID 2704 wrote to memory of 336	2704	svchost.exe	47

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\2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_4e0c54d61cf300429aeeaa2419b63ca7_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2860
- 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:2704
- - 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:1944
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1736
- - 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:1408
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1192
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1248
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2176
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2032
- - 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:336

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1564

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2244

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2992

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

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

Filesize
23KB

MD5
4e0c54d61cf300429aeeaa2419b63ca7

SHA1
f20b5d8eb5ff36fa02a7bbe65af817a2fb4f19d3

SHA256
ca091bb2a571373745d6c0056c0631da60b1246b5983b111a727281a8c4ae3ab

SHA512
f7f0487380ecd0367e42885d6cc4cc515436cef05b1b59a14a477dcb651c8bea8e5c4400109a8abf61bd0f8a347894c23ba8bdecfff640a82c894404f3ddc818

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/2704-8-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

Filesize
9.9MB

Download
memory/2704-7-0x0000000001330000-0x000000000133C000-memory.dmp

Filesize
48KB

Download
memory/2704-10-0x000000001AF70000-0x000000001AFF0000-memory.dmp

Filesize
512KB

Download
memory/2704-453-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

Filesize
9.9MB

Download
memory/2704-454-0x000000001AF70000-0x000000001AFF0000-memory.dmp

Filesize
512KB

Download
memory/2860-0-0x00000000001F0000-0x00000000001FC000-memory.dmp

Filesize
48KB

Download
memory/2860-1-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

Filesize
9.9MB

Download
memory/2860-452-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

Filesize
9.9MB

Download