chaos | b79883156cf021e22179ca553d3bd0138c9b236a7b85444361f428094009e1b1

Analysis

max time kernel
22s
max time network
20s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
25-08-2024 06:29

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General

Target

2024-08-25_305d975e0c3df4168d24f2c816ff46d7_destroyer_wannacry.exe
Size

77KB
MD5

305d975e0c3df4168d24f2c816ff46d7
SHA1

1c233c2fa3de1e804ee8de90236dabdecb39bac2
SHA256

b79883156cf021e22179ca553d3bd0138c9b236a7b85444361f428094009e1b1
SHA512

e67ef2a586e6b3dcc4810fa26000a7eb789bb1ed32b9f893432f6e84fe0c3d60336df64717bb5ad9afd85ff3638cc6dc7c1687870fa6495d5edeb04d53b14adf
SSDEEP

1536:k3kIDltwI21r9itLjEHZEnogTM2L/AXuCaWJeBEiU0u/4MTnjx:k3kUl21r9iZt/IS/A2WM9Unb/x

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\IMPORTANT.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/2488-1-0x00000000012F0000-0x000000000130A000-memory.dmp	family_chaos
behavioral1/files/0x000900000001227c-5.dat	family_chaos
behavioral1/memory/2052-7-0x0000000000A80000-0x0000000000A9A000-memory.dmp	family_chaos

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2728	bcdedit.exe
2072	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
2348	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	winint.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IMPORTANT.txt	winint.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winint.url	winint.exe

Executes dropped EXE 1 IoCs

pid	Process
2052	winint.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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	winint.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	winint.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	winint.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2212144002-1172735686-1556890956-1000\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	winint.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	winint.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	winint.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	winint.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	winint.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	winint.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	winint.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	winint.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3xgysajt1.jpg"	winint.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	winint.exe

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

System Information Discovery
T1082

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
1648	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1228	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2052	winint.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2488	2024-08-25_305d975e0c3df4168d24f2c816ff46d7_destroyer_wannacry.exe
2052	winint.exe
2052	winint.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	2024-08-25_305d975e0c3df4168d24f2c816ff46d7_destroyer_wannacry.exe
Token: SeDebugPrivilege	2052	winint.exe
Token: SeBackupPrivilege	1692	vssvc.exe
Token: SeRestorePrivilege	1692	vssvc.exe
Token: SeAuditPrivilege	1692	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2920	WMIC.exe
Token: SeSecurityPrivilege	2920	WMIC.exe
Token: SeTakeOwnershipPrivilege	2920	WMIC.exe
Token: SeLoadDriverPrivilege	2920	WMIC.exe
Token: SeSystemProfilePrivilege	2920	WMIC.exe
Token: SeSystemtimePrivilege	2920	WMIC.exe
Token: SeProfSingleProcessPrivilege	2920	WMIC.exe
Token: SeIncBasePriorityPrivilege	2920	WMIC.exe
Token: SeCreatePagefilePrivilege	2920	WMIC.exe
Token: SeBackupPrivilege	2920	WMIC.exe
Token: SeRestorePrivilege	2920	WMIC.exe
Token: SeShutdownPrivilege	2920	WMIC.exe
Token: SeDebugPrivilege	2920	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2920	WMIC.exe
Token: SeRemoteShutdownPrivilege	2920	WMIC.exe
Token: SeUndockPrivilege	2920	WMIC.exe
Token: SeManageVolumePrivilege	2920	WMIC.exe
Token: 33	2920	WMIC.exe
Token: 34	2920	WMIC.exe
Token: 35	2920	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2920	WMIC.exe
Token: SeSecurityPrivilege	2920	WMIC.exe
Token: SeTakeOwnershipPrivilege	2920	WMIC.exe
Token: SeLoadDriverPrivilege	2920	WMIC.exe
Token: SeSystemProfilePrivilege	2920	WMIC.exe
Token: SeSystemtimePrivilege	2920	WMIC.exe
Token: SeProfSingleProcessPrivilege	2920	WMIC.exe
Token: SeIncBasePriorityPrivilege	2920	WMIC.exe
Token: SeCreatePagefilePrivilege	2920	WMIC.exe
Token: SeBackupPrivilege	2920	WMIC.exe
Token: SeRestorePrivilege	2920	WMIC.exe
Token: SeShutdownPrivilege	2920	WMIC.exe
Token: SeDebugPrivilege	2920	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2920	WMIC.exe
Token: SeRemoteShutdownPrivilege	2920	WMIC.exe
Token: SeUndockPrivilege	2920	WMIC.exe
Token: SeManageVolumePrivilege	2920	WMIC.exe
Token: 33	2920	WMIC.exe
Token: 34	2920	WMIC.exe
Token: 35	2920	WMIC.exe
Token: SeBackupPrivilege	2440	wbengine.exe
Token: SeRestorePrivilege	2440	wbengine.exe
Token: SeSecurityPrivilege	2440	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2052	2488	2024-08-25_305d975e0c3df4168d24f2c816ff46d7_destroyer_wannacry.exe	29
PID 2488 wrote to memory of 2052	2488	2024-08-25_305d975e0c3df4168d24f2c816ff46d7_destroyer_wannacry.exe	29
PID 2488 wrote to memory of 2052	2488	2024-08-25_305d975e0c3df4168d24f2c816ff46d7_destroyer_wannacry.exe	29
PID 2052 wrote to memory of 3052	2052	winint.exe	31
PID 2052 wrote to memory of 3052	2052	winint.exe	31
PID 2052 wrote to memory of 3052	2052	winint.exe	31
PID 3052 wrote to memory of 1648	3052	cmd.exe	33
PID 3052 wrote to memory of 1648	3052	cmd.exe	33
PID 3052 wrote to memory of 1648	3052	cmd.exe	33
PID 3052 wrote to memory of 2920	3052	cmd.exe	36
PID 3052 wrote to memory of 2920	3052	cmd.exe	36
PID 3052 wrote to memory of 2920	3052	cmd.exe	36
PID 2052 wrote to memory of 1984	2052	winint.exe	38
PID 2052 wrote to memory of 1984	2052	winint.exe	38
PID 2052 wrote to memory of 1984	2052	winint.exe	38
PID 1984 wrote to memory of 2728	1984	cmd.exe	40
PID 1984 wrote to memory of 2728	1984	cmd.exe	40
PID 1984 wrote to memory of 2728	1984	cmd.exe	40
PID 1984 wrote to memory of 2072	1984	cmd.exe	41
PID 1984 wrote to memory of 2072	1984	cmd.exe	41
PID 1984 wrote to memory of 2072	1984	cmd.exe	41
PID 2052 wrote to memory of 2160	2052	winint.exe	42
PID 2052 wrote to memory of 2160	2052	winint.exe	42
PID 2052 wrote to memory of 2160	2052	winint.exe	42
PID 2160 wrote to memory of 2348	2160	cmd.exe	44
PID 2160 wrote to memory of 2348	2160	cmd.exe	44
PID 2160 wrote to memory of 2348	2160	cmd.exe	44
PID 2052 wrote to memory of 1228	2052	winint.exe	48
PID 2052 wrote to memory of 1228	2052	winint.exe	48
PID 2052 wrote to memory of 1228	2052	winint.exe	48

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\2024-08-25_305d975e0c3df4168d24f2c816ff46d7_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-25_305d975e0c3df4168d24f2c816ff46d7_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Users\Admin\AppData\Roaming\winint.exe
  "C:\Users\Admin\AppData\Roaming\winint.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:2052
- - 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:3052
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1648
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2920
- - 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:1984
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2728
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2072
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2160
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2348
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\IMPORTANT.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1228

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1692

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2440

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:812

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

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

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

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

Filesize
77KB

MD5
305d975e0c3df4168d24f2c816ff46d7

SHA1
1c233c2fa3de1e804ee8de90236dabdecb39bac2

SHA256
b79883156cf021e22179ca553d3bd0138c9b236a7b85444361f428094009e1b1

SHA512
e67ef2a586e6b3dcc4810fa26000a7eb789bb1ed32b9f893432f6e84fe0c3d60336df64717bb5ad9afd85ff3638cc6dc7c1687870fa6495d5edeb04d53b14adf

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/2052-7-0x0000000000A80000-0x0000000000A9A000-memory.dmp

Filesize
104KB

Download
memory/2052-72-0x000007FEF4B93000-0x000007FEF4B94000-memory.dmp

Filesize
4KB

Download
memory/2052-78-0x000007FEF4B90000-0x000007FEF557C000-memory.dmp

Filesize
9.9MB

Download
memory/2052-79-0x000007FEF4B90000-0x000007FEF557C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-0-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/2488-1-0x00000000012F0000-0x000000000130A000-memory.dmp

Filesize
104KB

Download