chaos | a3c442d58a5b6f05a7faf34b88b8c1ea2aeab52f76cd22ebbb4bc611fbac99ae

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-09-2024 18:22

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General

Target

2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
Size

25KB
MD5

2136851bb03a3f5b5dfeb64558e2074a
SHA1

992bb4b51f2ef49508dff162bf75a53450dde994
SHA256

a3c442d58a5b6f05a7faf34b88b8c1ea2aeab52f76cd22ebbb4bc611fbac99ae
SHA512

85cbf62b565bd3a0a624ddcc1c48f93d5cce8c59a54658ec28a5323ee269b1db9bdf49968c32728ebac54179c3cc8617310acb7dde439f0907589aae699c5356
SSDEEP

384:o3Mg/bqo2shyDpqyJOjPJDRr91CKnZKurAy3Yrek:Wqo2KipVOjhNr9PZKurEek

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\DECRYPTION INFORMATION.txt

Ransom Note

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 $100. 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 - https://www.coinmama.com Bitpanda - https://www.bitpanda.com Payment information Amount: 0.0017 BTC ($100) Bitcoin Address: bc1q909n8v9tmhfnh5ptrfjqjum2tp9tuucag6ldvm Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software - it may cause permanent data loss. We are always ready to cooperate and find the best way to solve your problem. Our company values its reputation. We give all guarantees of your files decryption. What are your recommendations? - Never change the name of the files, if you want to manipulate the files, be sure to back them up. If there are any problems with the files, we are not responsible for them. - Never work with intermediary companies because they charge you more money. Have a nice day :)

URLs

https://www.coinmama.com

https://www.bitpanda.com

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2160-1-0x0000000000EF0000-0x0000000000EFC000-memory.dmp	family_chaos
behavioral1/files/0x000d000000016aa9-5.dat	family_chaos
behavioral1/memory/2236-7-0x00000000003F0000-0x00000000003FC000-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
2068	bcdedit.exe
2516	bcdedit.exe

Renames multiple (221) 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
2416	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\DECRYPTION INFORMATION.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2236	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\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\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\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1846800975-3917212583-2893086201-1000\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\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\Administrative Tools\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\Music\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\Programs\Maintenance\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\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Admin\Documents\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\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\Links for United States\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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

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
2396	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2236	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2160	2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
2160	2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
2160	2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
2236	svchost.exe
2236	svchost.exe
2236	svchost.exe
2236	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2160	2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2236	svchost.exe
Token: SeBackupPrivilege	1708	vssvc.exe
Token: SeRestorePrivilege	1708	vssvc.exe
Token: SeAuditPrivilege	1708	vssvc.exe
Token: SeIncreaseQuotaPrivilege	848	WMIC.exe
Token: SeSecurityPrivilege	848	WMIC.exe
Token: SeTakeOwnershipPrivilege	848	WMIC.exe
Token: SeLoadDriverPrivilege	848	WMIC.exe
Token: SeSystemProfilePrivilege	848	WMIC.exe
Token: SeSystemtimePrivilege	848	WMIC.exe
Token: SeProfSingleProcessPrivilege	848	WMIC.exe
Token: SeIncBasePriorityPrivilege	848	WMIC.exe
Token: SeCreatePagefilePrivilege	848	WMIC.exe
Token: SeBackupPrivilege	848	WMIC.exe
Token: SeRestorePrivilege	848	WMIC.exe
Token: SeShutdownPrivilege	848	WMIC.exe
Token: SeDebugPrivilege	848	WMIC.exe
Token: SeSystemEnvironmentPrivilege	848	WMIC.exe
Token: SeRemoteShutdownPrivilege	848	WMIC.exe
Token: SeUndockPrivilege	848	WMIC.exe
Token: SeManageVolumePrivilege	848	WMIC.exe
Token: 33	848	WMIC.exe
Token: 34	848	WMIC.exe
Token: 35	848	WMIC.exe
Token: SeIncreaseQuotaPrivilege	848	WMIC.exe
Token: SeSecurityPrivilege	848	WMIC.exe
Token: SeTakeOwnershipPrivilege	848	WMIC.exe
Token: SeLoadDriverPrivilege	848	WMIC.exe
Token: SeSystemProfilePrivilege	848	WMIC.exe
Token: SeSystemtimePrivilege	848	WMIC.exe
Token: SeProfSingleProcessPrivilege	848	WMIC.exe
Token: SeIncBasePriorityPrivilege	848	WMIC.exe
Token: SeCreatePagefilePrivilege	848	WMIC.exe
Token: SeBackupPrivilege	848	WMIC.exe
Token: SeRestorePrivilege	848	WMIC.exe
Token: SeShutdownPrivilege	848	WMIC.exe
Token: SeDebugPrivilege	848	WMIC.exe
Token: SeSystemEnvironmentPrivilege	848	WMIC.exe
Token: SeRemoteShutdownPrivilege	848	WMIC.exe
Token: SeUndockPrivilege	848	WMIC.exe
Token: SeManageVolumePrivilege	848	WMIC.exe
Token: 33	848	WMIC.exe
Token: 34	848	WMIC.exe
Token: 35	848	WMIC.exe
Token: SeBackupPrivilege	700	wbengine.exe
Token: SeRestorePrivilege	700	wbengine.exe
Token: SeSecurityPrivilege	700	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 2236	2160	2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe	30
PID 2160 wrote to memory of 2236	2160	2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe	30
PID 2160 wrote to memory of 2236	2160	2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe	30
PID 2236 wrote to memory of 2988	2236	svchost.exe	32
PID 2236 wrote to memory of 2988	2236	svchost.exe	32
PID 2236 wrote to memory of 2988	2236	svchost.exe	32
PID 2988 wrote to memory of 2396	2988	cmd.exe	34
PID 2988 wrote to memory of 2396	2988	cmd.exe	34
PID 2988 wrote to memory of 2396	2988	cmd.exe	34
PID 2988 wrote to memory of 848	2988	cmd.exe	37
PID 2988 wrote to memory of 848	2988	cmd.exe	37
PID 2988 wrote to memory of 848	2988	cmd.exe	37
PID 2236 wrote to memory of 884	2236	svchost.exe	39
PID 2236 wrote to memory of 884	2236	svchost.exe	39
PID 2236 wrote to memory of 884	2236	svchost.exe	39
PID 884 wrote to memory of 2068	884	cmd.exe	41
PID 884 wrote to memory of 2068	884	cmd.exe	41
PID 884 wrote to memory of 2068	884	cmd.exe	41
PID 884 wrote to memory of 2516	884	cmd.exe	42
PID 884 wrote to memory of 2516	884	cmd.exe	42
PID 884 wrote to memory of 2516	884	cmd.exe	42
PID 2236 wrote to memory of 1028	2236	svchost.exe	43
PID 2236 wrote to memory of 1028	2236	svchost.exe	43
PID 2236 wrote to memory of 1028	2236	svchost.exe	43
PID 1028 wrote to memory of 2416	1028	cmd.exe	45
PID 1028 wrote to memory of 2416	1028	cmd.exe	45
PID 1028 wrote to memory of 2416	1028	cmd.exe	45
PID 2236 wrote to memory of 3064	2236	svchost.exe	50
PID 2236 wrote to memory of 3064	2236	svchost.exe	50
PID 2236 wrote to memory of 3064	2236	svchost.exe	50

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\2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2160
- 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:2236
- - 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:2988
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2396
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:848
- - 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:884
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2068
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2516
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1028
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2416
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\DECRYPTION INFORMATION.txt
    3⤵
    PID:3064

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1708

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:700

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1832

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1288

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

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

Replay Monitor

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Downloads

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

Filesize
25KB

MD5
2136851bb03a3f5b5dfeb64558e2074a

SHA1
992bb4b51f2ef49508dff162bf75a53450dde994

SHA256
a3c442d58a5b6f05a7faf34b88b8c1ea2aeab52f76cd22ebbb4bc611fbac99ae

SHA512
85cbf62b565bd3a0a624ddcc1c48f93d5cce8c59a54658ec28a5323ee269b1db9bdf49968c32728ebac54179c3cc8617310acb7dde439f0907589aae699c5356

Download Submit
C:\Users\Admin\Documents\DECRYPTION INFORMATION.txt

Filesize
1KB

MD5
74514450303945d01027fc42364029dd

SHA1
625933e2e6d685ebd31f08dd8e6219e4dc2d8dc8

SHA256
166a930b29979241f105c78b2f786a710f208599bb304a16acca3de570be26c6

SHA512
6c5b1215bad6919306f16cbf26263292fcba0786db9121a64edcaf8f5c6d1e657f463e2fdfc2ee0c7abd9088aab03fa03f26ac9823ad7d1cd2c7dc56000b2535

Download Submit
memory/2160-0-0x000007FEF53E3000-0x000007FEF53E4000-memory.dmp

Filesize
4KB

Download
memory/2160-1-0x0000000000EF0000-0x0000000000EFC000-memory.dmp

Filesize
48KB

Download
memory/2236-7-0x00000000003F0000-0x00000000003FC000-memory.dmp

Filesize
48KB

Download
memory/2236-9-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

Filesize
9.9MB

Download
memory/2236-16-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

Filesize
9.9MB

Download
memory/2236-505-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

Filesize
9.9MB

Download