chaos | 6aeca042b584b45f29a74186ae490e7c09a40f20d7fccca9358d5c79c75ae85e

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 20:21

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General

Target

2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe
Size

29KB
MD5

0f1c3242c7f577cb3687f7dfe592bac3
SHA1

4871fc4c95e72aef2110b4c8e49b06a4d5fa1170
SHA256

6aeca042b584b45f29a74186ae490e7c09a40f20d7fccca9358d5c79c75ae85e
SHA512

069467c163aac7d5058422fca4d1e11f6e4525ca9d137f7eed2bc7844b20de6c7023fc75e84791a1dea6466f650cea9893b23f247dfc85968d70359828bb73c4
SSDEEP

768:2OgHsv2zm3FHMBar9dYbjT7EKBTnYD3T7:hgMeaiar9d8798DD7

Score

10^/10

chaos defense_evasion discovery evasion execution impact ransomware

Malware Config

Extracted

Path

C:\Users\Admin\Documents\ENCRYPTED!!!!

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/2396-1-0x00000000001D0000-0x00000000001DC000-memory.dmp	family_chaos
behavioral1/files/0x000a00000001225f-5.dat	family_chaos
behavioral1/memory/2160-7-0x0000000001250000-0x000000000125C000-memory.dmp	family_chaos

Chaos 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
2084	bcdedit.exe
2144	bcdedit.exe

Renames multiple (103) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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
592	wbadmin.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2160	svchost.exe

Drops desktop.ini file(s) 14 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3551809350-4263495960-1443967649-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

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
2672	vssadmin.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\_auto_file\shell	rundll32.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2160	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2396	2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe
2396	2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe
2396	2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe
2160	svchost.exe
2160	svchost.exe
2160	svchost.exe
2160	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2660	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2160	svchost.exe
Token: SeBackupPrivilege	1896	vssvc.exe
Token: SeRestorePrivilege	1896	vssvc.exe
Token: SeAuditPrivilege	1896	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2476	WMIC.exe
Token: SeSecurityPrivilege	2476	WMIC.exe
Token: SeTakeOwnershipPrivilege	2476	WMIC.exe
Token: SeLoadDriverPrivilege	2476	WMIC.exe
Token: SeSystemProfilePrivilege	2476	WMIC.exe
Token: SeSystemtimePrivilege	2476	WMIC.exe
Token: SeProfSingleProcessPrivilege	2476	WMIC.exe
Token: SeIncBasePriorityPrivilege	2476	WMIC.exe
Token: SeCreatePagefilePrivilege	2476	WMIC.exe
Token: SeBackupPrivilege	2476	WMIC.exe
Token: SeRestorePrivilege	2476	WMIC.exe
Token: SeShutdownPrivilege	2476	WMIC.exe
Token: SeDebugPrivilege	2476	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2476	WMIC.exe
Token: SeRemoteShutdownPrivilege	2476	WMIC.exe
Token: SeUndockPrivilege	2476	WMIC.exe
Token: SeManageVolumePrivilege	2476	WMIC.exe
Token: 33	2476	WMIC.exe
Token: 34	2476	WMIC.exe
Token: 35	2476	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2476	WMIC.exe
Token: SeSecurityPrivilege	2476	WMIC.exe
Token: SeTakeOwnershipPrivilege	2476	WMIC.exe
Token: SeLoadDriverPrivilege	2476	WMIC.exe
Token: SeSystemProfilePrivilege	2476	WMIC.exe
Token: SeSystemtimePrivilege	2476	WMIC.exe
Token: SeProfSingleProcessPrivilege	2476	WMIC.exe
Token: SeIncBasePriorityPrivilege	2476	WMIC.exe
Token: SeCreatePagefilePrivilege	2476	WMIC.exe
Token: SeBackupPrivilege	2476	WMIC.exe
Token: SeRestorePrivilege	2476	WMIC.exe
Token: SeShutdownPrivilege	2476	WMIC.exe
Token: SeDebugPrivilege	2476	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2476	WMIC.exe
Token: SeRemoteShutdownPrivilege	2476	WMIC.exe
Token: SeUndockPrivilege	2476	WMIC.exe
Token: SeManageVolumePrivilege	2476	WMIC.exe
Token: 33	2476	WMIC.exe
Token: 34	2476	WMIC.exe
Token: 35	2476	WMIC.exe
Token: SeBackupPrivilege	580	wbengine.exe
Token: SeRestorePrivilege	580	wbengine.exe
Token: SeSecurityPrivilege	580	wbengine.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2660	AcroRd32.exe
2660	AcroRd32.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2160	2396	2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe	30
PID 2396 wrote to memory of 2160	2396	2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe	30
PID 2396 wrote to memory of 2160	2396	2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe	30
PID 2160 wrote to memory of 1268	2160	svchost.exe	32
PID 2160 wrote to memory of 1268	2160	svchost.exe	32
PID 2160 wrote to memory of 1268	2160	svchost.exe	32
PID 1268 wrote to memory of 2672	1268	cmd.exe	34
PID 1268 wrote to memory of 2672	1268	cmd.exe	34
PID 1268 wrote to memory of 2672	1268	cmd.exe	34
PID 1268 wrote to memory of 2476	1268	cmd.exe	37
PID 1268 wrote to memory of 2476	1268	cmd.exe	37
PID 1268 wrote to memory of 2476	1268	cmd.exe	37
PID 2160 wrote to memory of 3068	2160	svchost.exe	39
PID 2160 wrote to memory of 3068	2160	svchost.exe	39
PID 2160 wrote to memory of 3068	2160	svchost.exe	39
PID 3068 wrote to memory of 2084	3068	cmd.exe	41
PID 3068 wrote to memory of 2084	3068	cmd.exe	41
PID 3068 wrote to memory of 2084	3068	cmd.exe	41
PID 3068 wrote to memory of 2144	3068	cmd.exe	42
PID 3068 wrote to memory of 2144	3068	cmd.exe	42
PID 3068 wrote to memory of 2144	3068	cmd.exe	42
PID 2160 wrote to memory of 1636	2160	svchost.exe	43
PID 2160 wrote to memory of 1636	2160	svchost.exe	43
PID 2160 wrote to memory of 1636	2160	svchost.exe	43
PID 1636 wrote to memory of 592	1636	cmd.exe	45
PID 1636 wrote to memory of 592	1636	cmd.exe	45
PID 1636 wrote to memory of 592	1636	cmd.exe	45
PID 2160 wrote to memory of 2748	2160	svchost.exe	49
PID 2160 wrote to memory of 2748	2160	svchost.exe	49
PID 2160 wrote to memory of 2748	2160	svchost.exe	49
PID 2748 wrote to memory of 2660	2748	rundll32.exe	51
PID 2748 wrote to memory of 2660	2748	rundll32.exe	51
PID 2748 wrote to memory of 2660	2748	rundll32.exe	51
PID 2748 wrote to memory of 2660	2748	rundll32.exe	51

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\2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-03_0f1c3242c7f577cb3687f7dfe592bac3_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2396
- 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:2160
- - 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:1268
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2672
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2476
- - 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:3068
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2084
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2144
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1636
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:592
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\ENCRYPTED!!!!
    3⤵
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:2748
  - - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
      "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\ENCRYPTED!!!!"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      PID:2660

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1896

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:580

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2132

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2016

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

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
8b463cc9e9a4948d7470bd18506c98fa

SHA1
8c970bf4ca8b3c790ad3fd7e57ef2b2ea9fe4a72

SHA256
b578613c673560c5949baef90f94f04f7680ad664041412d4fabc3384004e4e4

SHA512
d1c9b80b72a4440e8d62826f0d9391738b52bd426a489482a432cf8fec62216535308650150811521610eea414bd9bd0503a726b422ba15c3a21d8e38db11342

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

Filesize
29KB

MD5
0f1c3242c7f577cb3687f7dfe592bac3

SHA1
4871fc4c95e72aef2110b4c8e49b06a4d5fa1170

SHA256
6aeca042b584b45f29a74186ae490e7c09a40f20d7fccca9358d5c79c75ae85e

SHA512
069467c163aac7d5058422fca4d1e11f6e4525ca9d137f7eed2bc7844b20de6c7023fc75e84791a1dea6466f650cea9893b23f247dfc85968d70359828bb73c4

Download Submit
C:\Users\Admin\Documents\ENCRYPTED!!!!

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/2160-7-0x0000000001250000-0x000000000125C000-memory.dmp

Filesize
48KB

Download
memory/2160-9-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2160-10-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2160-235-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2396-0-0x000007FEF5F53000-0x000007FEF5F54000-memory.dmp

Filesize
4KB

Download
memory/2396-1-0x00000000001D0000-0x00000000001DC000-memory.dmp

Filesize
48KB

Download