chaos | 62a1c371bea432fcd5707d25810ab573b6ec269625c59db9539e3939d3fe9554

Resubmissions

24/03/2024, 00:36

240324-ax2m2sfa39 10

Analysis

max time kernel
90s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
24/03/2024, 00:36

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Report Analysis Logs

General

Target

Private Chat V2.0.exe
Size

124KB
MD5

8d6cf920922372018823199536ab94b9
SHA1

c93931bbdda0f4efe54f5eaa7dd04c362d93689a
SHA256

62a1c371bea432fcd5707d25810ab573b6ec269625c59db9539e3939d3fe9554
SHA512

11a4499b072c1dabe61c19acb29da374b4d4979c2581bcc49c3bae43f5bec295d03d9af74158152f95310eb3aedfff3bac92c0d9f3f063fba283caeee5c5f41c
SSDEEP

3072:jo8d30hr9ynxJxaJ3e6ua0g0qcB2f/u80kcmU/C7eJBz4gdw:Bd4r9ynxkbOqguxU6iW

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\README.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 $50. Payment can be made in Bitcoin (Bitcoin Address: bc1qakhl8eu20ely220fxm6d3tjsk2al64vrha4sxa), Ethereum (ETH Address: 0x22D2C1C38b3c26C9E403B34ea5aF42Af00e90d9f), Binance Coin (BNB Address: bnb17CqMQFeuB3NTzJ2X28tfRmWaPyPQgvoHV0205gfc6ykk), or through PayPal (Burner Account: [email protected]). After sent u can also email the email: [email protected] with proof of payment and u will recieve ur decryption key You can make the payment directly by visiting this PayPal site: PayPal Payment Site. How do I pay, where do I get Bitcoin, Ethereum, Binance Coin, or PayPal? Purchasing Bitcoin, Ethereum, or Binance Coin varies from country to country, you are best advised to do a quick Google search yourself to find out how to buy Bitcoin, Ethereum, Binance Coin, or set up a PayPal account. These sites will help you to get fast and reliable Bitcoin, Ethereum, Binance Coin, or PayPal. Coinmama - https://www.coinmama.com/ Bitpanda - https://www.bitpanda.com/ If you will try to seek for help or advice we recommend not to. Why you ask? Because no other software can decrypt this ransomware, only us have the special key to unlock it. So getting other decrypters will be worthless. Don't even think about calling the cops: we will snitch about your pedo activity! You have exactly 12 hours from now to pay up or your PC will be locked for a very long time, approximately 125 Years! Have fun buddy. We monitor every move you make, 👁️‍🗨️ with 8 eyes on you, always one step ahead 👁️, lurking in your devices.

Emails

[email protected]

URLs

https://www.coinmama.com/

https://www.bitpanda.com/

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral1/memory/3204-0-0x0000000000DE0000-0x0000000000E04000-memory.dmp	family_chaos
behavioral1/files/0x000200000002a7a9-6.dat	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

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
656	bcdedit.exe
1520	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
3452	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Private Chat.url	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Private Chat.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\README.txt	Private Chat.exe

Executes dropped EXE 1 IoCs

pid	Process
3084	Private Chat.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\Internet Explorer\Quick Launch\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Private Chat.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2930051783-2551506282-3430162621-1000\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\OneDrive\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini	Private Chat.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-1-5-21-2930051783-2551506282-3430162621-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a13vtlv0g.jpg"	Private Chat.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe

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
4984	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2930051783-2551506282-3430162621-1000_Classes\Local Settings	Private Chat.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1444	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3084	Private Chat.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3204	Private Chat V2.0.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe
3084	Private Chat.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	3204	Private Chat V2.0.exe
Token: SeDebugPrivilege	3084	Private Chat.exe
Token: SeBackupPrivilege	4808	vssvc.exe
Token: SeRestorePrivilege	4808	vssvc.exe
Token: SeAuditPrivilege	4808	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1836	WMIC.exe
Token: SeSecurityPrivilege	1836	WMIC.exe
Token: SeTakeOwnershipPrivilege	1836	WMIC.exe
Token: SeLoadDriverPrivilege	1836	WMIC.exe
Token: SeSystemProfilePrivilege	1836	WMIC.exe
Token: SeSystemtimePrivilege	1836	WMIC.exe
Token: SeProfSingleProcessPrivilege	1836	WMIC.exe
Token: SeIncBasePriorityPrivilege	1836	WMIC.exe
Token: SeCreatePagefilePrivilege	1836	WMIC.exe
Token: SeBackupPrivilege	1836	WMIC.exe
Token: SeRestorePrivilege	1836	WMIC.exe
Token: SeShutdownPrivilege	1836	WMIC.exe
Token: SeDebugPrivilege	1836	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1836	WMIC.exe
Token: SeRemoteShutdownPrivilege	1836	WMIC.exe
Token: SeUndockPrivilege	1836	WMIC.exe
Token: SeManageVolumePrivilege	1836	WMIC.exe
Token: 33	1836	WMIC.exe
Token: 34	1836	WMIC.exe
Token: 35	1836	WMIC.exe
Token: 36	1836	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1836	WMIC.exe
Token: SeSecurityPrivilege	1836	WMIC.exe
Token: SeTakeOwnershipPrivilege	1836	WMIC.exe
Token: SeLoadDriverPrivilege	1836	WMIC.exe
Token: SeSystemProfilePrivilege	1836	WMIC.exe
Token: SeSystemtimePrivilege	1836	WMIC.exe
Token: SeProfSingleProcessPrivilege	1836	WMIC.exe
Token: SeIncBasePriorityPrivilege	1836	WMIC.exe
Token: SeCreatePagefilePrivilege	1836	WMIC.exe
Token: SeBackupPrivilege	1836	WMIC.exe
Token: SeRestorePrivilege	1836	WMIC.exe
Token: SeShutdownPrivilege	1836	WMIC.exe
Token: SeDebugPrivilege	1836	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1836	WMIC.exe
Token: SeRemoteShutdownPrivilege	1836	WMIC.exe
Token: SeUndockPrivilege	1836	WMIC.exe
Token: SeManageVolumePrivilege	1836	WMIC.exe
Token: 33	1836	WMIC.exe
Token: 34	1836	WMIC.exe
Token: 35	1836	WMIC.exe
Token: 36	1836	WMIC.exe
Token: SeBackupPrivilege	5084	wbengine.exe
Token: SeRestorePrivilege	5084	wbengine.exe
Token: SeSecurityPrivilege	5084	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 3084	3204	Private Chat V2.0.exe	78
PID 3204 wrote to memory of 3084	3204	Private Chat V2.0.exe	78
PID 3084 wrote to memory of 4812	3084	Private Chat.exe	80
PID 3084 wrote to memory of 4812	3084	Private Chat.exe	80
PID 4812 wrote to memory of 4984	4812	cmd.exe	82
PID 4812 wrote to memory of 4984	4812	cmd.exe	82
PID 4812 wrote to memory of 1836	4812	cmd.exe	85
PID 4812 wrote to memory of 1836	4812	cmd.exe	85
PID 3084 wrote to memory of 2868	3084	Private Chat.exe	87
PID 3084 wrote to memory of 2868	3084	Private Chat.exe	87
PID 2868 wrote to memory of 656	2868	cmd.exe	89
PID 2868 wrote to memory of 656	2868	cmd.exe	89
PID 2868 wrote to memory of 1520	2868	cmd.exe	90
PID 2868 wrote to memory of 1520	2868	cmd.exe	90
PID 3084 wrote to memory of 2172	3084	Private Chat.exe	91
PID 3084 wrote to memory of 2172	3084	Private Chat.exe	91
PID 2172 wrote to memory of 3452	2172	cmd.exe	93
PID 2172 wrote to memory of 3452	2172	cmd.exe	93
PID 3084 wrote to memory of 1444	3084	Private Chat.exe	97
PID 3084 wrote to memory of 1444	3084	Private Chat.exe	97

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\Private Chat V2.0.exe
"C:\Users\Admin\AppData\Local\Temp\Private Chat V2.0.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Users\Admin\AppData\Roaming\Private Chat.exe
  "C:\Users\Admin\AppData\Roaming\Private Chat.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Sets desktop wallpaper using registry
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3084
- - 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:4812
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:4984
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1836
- - 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:2868
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:656
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1520
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2172
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:3452
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1444

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4808

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5084

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:4656

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:2516

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

Peripheral Device Discovery

T1120

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\Private Chat.exe

Filesize
124KB

MD5
8d6cf920922372018823199536ab94b9

SHA1
c93931bbdda0f4efe54f5eaa7dd04c362d93689a

SHA256
62a1c371bea432fcd5707d25810ab573b6ec269625c59db9539e3939d3fe9554

SHA512
11a4499b072c1dabe61c19acb29da374b4d4979c2581bcc49c3bae43f5bec295d03d9af74158152f95310eb3aedfff3bac92c0d9f3f063fba283caeee5c5f41c

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

Filesize
1KB

MD5
c748d4e5fedf548bc3d2516a68b2055f

SHA1
1e3bcd8e55cbc0abb37e8812df4be12a4b19ac3d

SHA256
1015fb7b4dc41f629cbcf4875ad83df7d1720ae66b5a099ed39c0bdc205b3258

SHA512
e7b744a85a87c3695a9a60761459299f4c1a812030498e8de31d034a2934f49882d0228a6fe50dd4cae2d281d4af96348972267664c9431b629459824356487a

Download Submit
memory/3084-15-0x00007FFA01730000-0x00007FFA021F2000-memory.dmp

Filesize
10.8MB

Download
memory/3084-20-0x000000001BCF0000-0x000000001BD00000-memory.dmp

Filesize
64KB

Download
memory/3084-443-0x00007FFA01730000-0x00007FFA021F2000-memory.dmp

Filesize
10.8MB

Download
memory/3084-444-0x000000001BCF0000-0x000000001BD00000-memory.dmp

Filesize
64KB

Download
memory/3204-0-0x0000000000DE0000-0x0000000000E04000-memory.dmp

Filesize
144KB

Download
memory/3204-1-0x00007FFA01730000-0x00007FFA021F2000-memory.dmp

Filesize
10.8MB

Download
memory/3204-14-0x00007FFA01730000-0x00007FFA021F2000-memory.dmp

Filesize
10.8MB

Download