chaos | 0d6fe69218326150026cb50294c854b46dc96884fcdb5ae46e12ee1610eb3e74

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
03-03-2024 09:25

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General

Target

2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe
Size

594KB
MD5

1fd43603dfafb9f49be5d639d59bea00
SHA1

362ae0ff9e9399e0a1b59db9ca2c3bddb7e78a47
SHA256

0d6fe69218326150026cb50294c854b46dc96884fcdb5ae46e12ee1610eb3e74
SHA512

cb8edc654c8c4d18ac1d32d65a714ef66aa2bcd290a47becba1bb70017d7b55a2d0923d30a2a30d4dfdc46b6e1a8c3cbb79eb1a893610f0955e86beee8bab9ce
SSDEEP

6144:t1r9Sb9q3146ghFGjfaLl3uw7t+B8a34isaS:QSAhFGjiLlb7t2844is

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\s3don

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/2080-0-0x00000000009C0000-0x0000000000A5A000-memory.dmp	family_chaos
behavioral1/files/0x000d000000012253-5.dat	family_chaos
behavioral1/memory/2692-7-0x00000000002F0000-0x000000000038A000-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/2080-0-0x00000000009C0000-0x0000000000A5A000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000d000000012253-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2692-7-0x00000000002F0000-0x000000000038A000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1652	bcdedit.exe
2812	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
1260	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
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
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\s3don	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2692	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\Public\Music\Sample 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\Favorites\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\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\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\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\AppData\Roaming\Microsoft\Windows\Start Menu\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	F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\Public\Pictures\Sample 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\Public\Documents\desktop.ini	svchost.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\6tbyyh3mq.jpg"	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
2836	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2692	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2080	2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe
2080	2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2896	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2080	2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe
Token: SeDebugPrivilege	2692	svchost.exe
Token: SeBackupPrivilege	2204	vssvc.exe
Token: SeRestorePrivilege	2204	vssvc.exe
Token: SeAuditPrivilege	2204	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1872	WMIC.exe
Token: SeSecurityPrivilege	1872	WMIC.exe
Token: SeTakeOwnershipPrivilege	1872	WMIC.exe
Token: SeLoadDriverPrivilege	1872	WMIC.exe
Token: SeSystemProfilePrivilege	1872	WMIC.exe
Token: SeSystemtimePrivilege	1872	WMIC.exe
Token: SeProfSingleProcessPrivilege	1872	WMIC.exe
Token: SeIncBasePriorityPrivilege	1872	WMIC.exe
Token: SeCreatePagefilePrivilege	1872	WMIC.exe
Token: SeBackupPrivilege	1872	WMIC.exe
Token: SeRestorePrivilege	1872	WMIC.exe
Token: SeShutdownPrivilege	1872	WMIC.exe
Token: SeDebugPrivilege	1872	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1872	WMIC.exe
Token: SeRemoteShutdownPrivilege	1872	WMIC.exe
Token: SeUndockPrivilege	1872	WMIC.exe
Token: SeManageVolumePrivilege	1872	WMIC.exe
Token: 33	1872	WMIC.exe
Token: 34	1872	WMIC.exe
Token: 35	1872	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1872	WMIC.exe
Token: SeSecurityPrivilege	1872	WMIC.exe
Token: SeTakeOwnershipPrivilege	1872	WMIC.exe
Token: SeLoadDriverPrivilege	1872	WMIC.exe
Token: SeSystemProfilePrivilege	1872	WMIC.exe
Token: SeSystemtimePrivilege	1872	WMIC.exe
Token: SeProfSingleProcessPrivilege	1872	WMIC.exe
Token: SeIncBasePriorityPrivilege	1872	WMIC.exe
Token: SeCreatePagefilePrivilege	1872	WMIC.exe
Token: SeBackupPrivilege	1872	WMIC.exe
Token: SeRestorePrivilege	1872	WMIC.exe
Token: SeShutdownPrivilege	1872	WMIC.exe
Token: SeDebugPrivilege	1872	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1872	WMIC.exe
Token: SeRemoteShutdownPrivilege	1872	WMIC.exe
Token: SeUndockPrivilege	1872	WMIC.exe
Token: SeManageVolumePrivilege	1872	WMIC.exe
Token: 33	1872	WMIC.exe
Token: 34	1872	WMIC.exe
Token: 35	1872	WMIC.exe
Token: SeBackupPrivilege	2368	wbengine.exe
Token: SeRestorePrivilege	2368	wbengine.exe
Token: SeSecurityPrivilege	2368	wbengine.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2896	AcroRd32.exe
2896	AcroRd32.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 2692	2080	2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe	28
PID 2080 wrote to memory of 2692	2080	2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe	28
PID 2080 wrote to memory of 2692	2080	2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe	28
PID 2692 wrote to memory of 2584	2692	svchost.exe	29
PID 2692 wrote to memory of 2584	2692	svchost.exe	29
PID 2692 wrote to memory of 2584	2692	svchost.exe	29
PID 2584 wrote to memory of 2836	2584	cmd.exe	31
PID 2584 wrote to memory of 2836	2584	cmd.exe	31
PID 2584 wrote to memory of 2836	2584	cmd.exe	31
PID 2584 wrote to memory of 1872	2584	cmd.exe	35
PID 2584 wrote to memory of 1872	2584	cmd.exe	35
PID 2584 wrote to memory of 1872	2584	cmd.exe	35
PID 2692 wrote to memory of 2736	2692	svchost.exe	37
PID 2692 wrote to memory of 2736	2692	svchost.exe	37
PID 2692 wrote to memory of 2736	2692	svchost.exe	37
PID 2736 wrote to memory of 1652	2736	cmd.exe	39
PID 2736 wrote to memory of 1652	2736	cmd.exe	39
PID 2736 wrote to memory of 1652	2736	cmd.exe	39
PID 2736 wrote to memory of 2812	2736	cmd.exe	40
PID 2736 wrote to memory of 2812	2736	cmd.exe	40
PID 2736 wrote to memory of 2812	2736	cmd.exe	40
PID 2692 wrote to memory of 2516	2692	svchost.exe	41
PID 2692 wrote to memory of 2516	2692	svchost.exe	41
PID 2692 wrote to memory of 2516	2692	svchost.exe	41
PID 2516 wrote to memory of 1260	2516	cmd.exe	43
PID 2516 wrote to memory of 1260	2516	cmd.exe	43
PID 2516 wrote to memory of 1260	2516	cmd.exe	43
PID 2692 wrote to memory of 1748	2692	svchost.exe	47
PID 2692 wrote to memory of 1748	2692	svchost.exe	47
PID 2692 wrote to memory of 1748	2692	svchost.exe	47
PID 1748 wrote to memory of 2896	1748	rundll32.exe	49
PID 1748 wrote to memory of 2896	1748	rundll32.exe	49
PID 1748 wrote to memory of 2896	1748	rundll32.exe	49
PID 1748 wrote to memory of 2896	1748	rundll32.exe	49

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\2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-03_1fd43603dfafb9f49be5d639d59bea00_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2080
- 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)
  - Sets desktop wallpaper using registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2692
- - 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:2584
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2836
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1872
- - 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:2736
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1652
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2812
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2516
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1260
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\s3don
    3⤵
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:1748
  - - 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\s3don"
      4⤵
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      PID:2896

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2204

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2368

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:384

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:788

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

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\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
6b795099b2e94a7920bd1b103590406d

SHA1
e1bcf0bee7fc9cdba57c87f032a21a50b6d26dc7

SHA256
8e40a66d75af7c23b2880056c8a7df1b41c8533cbffb7f2244729d9fcc260103

SHA512
b6acb9676c0e70664b8b85a390ee07d563b086430ee6b1a30161b8d6c68f9296cb096ee2c083e3831756505daad9314c5cbd485ecbf1db22d6c7e618ce418a58

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

Filesize
594KB

MD5
1fd43603dfafb9f49be5d639d59bea00

SHA1
362ae0ff9e9399e0a1b59db9ca2c3bddb7e78a47

SHA256
0d6fe69218326150026cb50294c854b46dc96884fcdb5ae46e12ee1610eb3e74

SHA512
cb8edc654c8c4d18ac1d32d65a714ef66aa2bcd290a47becba1bb70017d7b55a2d0923d30a2a30d4dfdc46b6e1a8c3cbb79eb1a893610f0955e86beee8bab9ce

Download Submit
C:\Users\Admin\Desktop\s3don

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/2080-0-0x00000000009C0000-0x0000000000A5A000-memory.dmp

Filesize
616KB

Download
memory/2080-1-0x000007FEF55C0000-0x000007FEF5FAC000-memory.dmp

Filesize
9.9MB

Download
memory/2080-8-0x000007FEF55C0000-0x000007FEF5FAC000-memory.dmp

Filesize
9.9MB

Download
memory/2692-7-0x00000000002F0000-0x000000000038A000-memory.dmp

Filesize
616KB

Download
memory/2692-9-0x000007FEF55C0000-0x000007FEF5FAC000-memory.dmp

Filesize
9.9MB

Download
memory/2692-75-0x000000001B0B0000-0x000000001B130000-memory.dmp

Filesize
512KB

Download
memory/2692-94-0x000007FEF55C0000-0x000007FEF5FAC000-memory.dmp

Filesize
9.9MB

Download
memory/2692-95-0x000000001B0B0000-0x000000001B130000-memory.dmp

Filesize
512KB

Download