chaos | 62a1c371bea432fcd5707d25810ab573b6ec269625c59db9539e3939d3fe9554

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-03-2024 21:46

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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 3 IoCs

resource	yara_rule
behavioral1/memory/1756-0-0x0000000000F70000-0x0000000000F94000-memory.dmp	family_chaos
behavioral1/files/0x000b000000014221-4.dat	family_chaos
behavioral1/memory/2108-7-0x0000000000F30000-0x0000000000F54000-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

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
400	bcdedit.exe
1204	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
1564	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
2108	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\Downloads\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\Favorites\Links for United States\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\Saved Games\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\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Videos\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\Documents\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\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\Favorites\Links\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\Accessories\Accessibility\Desktop.ini	Private Chat.exe
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	F:\$RECYCLE.BIN\S-1-5-21-3787592910-3720486031-2929222812-1000\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Public\Videos\Sample Videos\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\Searches\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\Music\desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Music\Sample Music\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\Videos\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\SendTo\Desktop.ini	Private Chat.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Private Chat.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-1-5-21-3787592910-3720486031-2929222812-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dgoelevbs.jpg"	Private Chat.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	Private Chat.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
1948	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2332	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2108	Private Chat.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1756	Private Chat V2.0.exe
1756	Private Chat V2.0.exe
2108	Private Chat.exe
2108	Private Chat.exe
2108	Private Chat.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1756	Private Chat V2.0.exe
Token: SeDebugPrivilege	2108	Private Chat.exe
Token: SeBackupPrivilege	240	vssvc.exe
Token: SeRestorePrivilege	240	vssvc.exe
Token: SeAuditPrivilege	240	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2100	WMIC.exe
Token: SeSecurityPrivilege	2100	WMIC.exe
Token: SeTakeOwnershipPrivilege	2100	WMIC.exe
Token: SeLoadDriverPrivilege	2100	WMIC.exe
Token: SeSystemProfilePrivilege	2100	WMIC.exe
Token: SeSystemtimePrivilege	2100	WMIC.exe
Token: SeProfSingleProcessPrivilege	2100	WMIC.exe
Token: SeIncBasePriorityPrivilege	2100	WMIC.exe
Token: SeCreatePagefilePrivilege	2100	WMIC.exe
Token: SeBackupPrivilege	2100	WMIC.exe
Token: SeRestorePrivilege	2100	WMIC.exe
Token: SeShutdownPrivilege	2100	WMIC.exe
Token: SeDebugPrivilege	2100	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2100	WMIC.exe
Token: SeRemoteShutdownPrivilege	2100	WMIC.exe
Token: SeUndockPrivilege	2100	WMIC.exe
Token: SeManageVolumePrivilege	2100	WMIC.exe
Token: 33	2100	WMIC.exe
Token: 34	2100	WMIC.exe
Token: 35	2100	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2100	WMIC.exe
Token: SeSecurityPrivilege	2100	WMIC.exe
Token: SeTakeOwnershipPrivilege	2100	WMIC.exe
Token: SeLoadDriverPrivilege	2100	WMIC.exe
Token: SeSystemProfilePrivilege	2100	WMIC.exe
Token: SeSystemtimePrivilege	2100	WMIC.exe
Token: SeProfSingleProcessPrivilege	2100	WMIC.exe
Token: SeIncBasePriorityPrivilege	2100	WMIC.exe
Token: SeCreatePagefilePrivilege	2100	WMIC.exe
Token: SeBackupPrivilege	2100	WMIC.exe
Token: SeRestorePrivilege	2100	WMIC.exe
Token: SeShutdownPrivilege	2100	WMIC.exe
Token: SeDebugPrivilege	2100	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2100	WMIC.exe
Token: SeRemoteShutdownPrivilege	2100	WMIC.exe
Token: SeUndockPrivilege	2100	WMIC.exe
Token: SeManageVolumePrivilege	2100	WMIC.exe
Token: 33	2100	WMIC.exe
Token: 34	2100	WMIC.exe
Token: 35	2100	WMIC.exe
Token: SeBackupPrivilege	952	wbengine.exe
Token: SeRestorePrivilege	952	wbengine.exe
Token: SeSecurityPrivilege	952	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 2108	1756	Private Chat V2.0.exe	28
PID 1756 wrote to memory of 2108	1756	Private Chat V2.0.exe	28
PID 1756 wrote to memory of 2108	1756	Private Chat V2.0.exe	28
PID 2108 wrote to memory of 1600	2108	Private Chat.exe	30
PID 2108 wrote to memory of 1600	2108	Private Chat.exe	30
PID 2108 wrote to memory of 1600	2108	Private Chat.exe	30
PID 1600 wrote to memory of 1948	1600	cmd.exe	32
PID 1600 wrote to memory of 1948	1600	cmd.exe	32
PID 1600 wrote to memory of 1948	1600	cmd.exe	32
PID 1600 wrote to memory of 2100	1600	cmd.exe	36
PID 1600 wrote to memory of 2100	1600	cmd.exe	36
PID 1600 wrote to memory of 2100	1600	cmd.exe	36
PID 2108 wrote to memory of 1716	2108	Private Chat.exe	38
PID 2108 wrote to memory of 1716	2108	Private Chat.exe	38
PID 2108 wrote to memory of 1716	2108	Private Chat.exe	38
PID 1716 wrote to memory of 400	1716	cmd.exe	40
PID 1716 wrote to memory of 400	1716	cmd.exe	40
PID 1716 wrote to memory of 400	1716	cmd.exe	40
PID 1716 wrote to memory of 1204	1716	cmd.exe	41
PID 1716 wrote to memory of 1204	1716	cmd.exe	41
PID 1716 wrote to memory of 1204	1716	cmd.exe	41
PID 2108 wrote to memory of 1976	2108	Private Chat.exe	42
PID 2108 wrote to memory of 1976	2108	Private Chat.exe	42
PID 2108 wrote to memory of 1976	2108	Private Chat.exe	42
PID 1976 wrote to memory of 1564	1976	cmd.exe	44
PID 1976 wrote to memory of 1564	1976	cmd.exe	44
PID 1976 wrote to memory of 1564	1976	cmd.exe	44
PID 2108 wrote to memory of 2332	2108	Private Chat.exe	48
PID 2108 wrote to memory of 2332	2108	Private Chat.exe	48
PID 2108 wrote to memory of 2332	2108	Private Chat.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\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:1756
- 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
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2108
- - 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:1600
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1948
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2100
- - 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:1716
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:400
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1204
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1976
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1564
- - 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:2332

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:240

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:952

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1952

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1940

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\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/1756-0-0x0000000000F70000-0x0000000000F94000-memory.dmp

Filesize
144KB

Download
memory/1756-1-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

Filesize
9.9MB

Download
memory/1756-8-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-7-0x0000000000F30000-0x0000000000F54000-memory.dmp

Filesize
144KB

Download
memory/2108-9-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-11-0x000000001ADF0000-0x000000001AE70000-memory.dmp

Filesize
512KB

Download
memory/2108-483-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-484-0x000000001ADF0000-0x000000001AE70000-memory.dmp

Filesize
512KB

Download