Analysis
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max time kernel
143s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
23-03-2024 21:46
Behavioral task
behavioral1
Sample
Private Chat V2.0.exe
Resource
win7-20240221-en
windows7-x64
19 signatures
150 seconds
Behavioral task
behavioral2
Sample
Private Chat V2.0.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
22 signatures
150 seconds
General
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Target
Private Chat V2.0.exe
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Size
124KB
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MD5
8d6cf920922372018823199536ab94b9
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SHA1
c93931bbdda0f4efe54f5eaa7dd04c362d93689a
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SHA256
62a1c371bea432fcd5707d25810ab573b6ec269625c59db9539e3939d3fe9554
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SHA512
11a4499b072c1dabe61c19acb29da374b4d4979c2581bcc49c3bae43f5bec295d03d9af74158152f95310eb3aedfff3bac92c0d9f3f063fba283caeee5c5f41c
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SSDEEP
3072:jo8d30hr9ynxJxaJ3e6ua0g0qcB2f/u80kcmU/C7eJBz4gdw:Bd4r9ynxkbOqguxU6iW
Score
10/10
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
URLs
https://www.coinmama.com/
https://www.bitpanda.com/
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/4444-0-0x0000000000F90000-0x0000000000FB4000-memory.dmp family_chaos behavioral2/files/0x000900000002326a-6.dat family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 284 bcdedit.exe 308 bcdedit.exe -
pid Process 2296 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation Private Chat V2.0.exe Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation Private Chat.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 5080 Private Chat.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Saved Games\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\Libraries\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-1-5-21-3808065738-1666277613-1125846146-1000\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\Contacts\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\Pictures\Saved Pictures\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Music\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\System Tools\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Videos\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\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\Admin\Pictures\Camera Roll\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\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\Maintenance\Desktop.ini Private Chat.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\23qlzm04w.jpg" Private Chat.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process 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 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 -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4364 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings Private Chat.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 4500 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 5080 Private Chat.exe -
Suspicious behavior: EnumeratesProcesses 53 IoCs
pid Process 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 4444 Private Chat V2.0.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe 5080 Private Chat.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4444 Private Chat V2.0.exe Token: SeDebugPrivilege 5080 Private Chat.exe Token: SeBackupPrivilege 4820 vssvc.exe Token: SeRestorePrivilege 4820 vssvc.exe Token: SeAuditPrivilege 4820 vssvc.exe Token: SeIncreaseQuotaPrivilege 2296 WMIC.exe Token: SeSecurityPrivilege 2296 WMIC.exe Token: SeTakeOwnershipPrivilege 2296 WMIC.exe Token: SeLoadDriverPrivilege 2296 WMIC.exe Token: SeSystemProfilePrivilege 2296 WMIC.exe Token: SeSystemtimePrivilege 2296 WMIC.exe Token: SeProfSingleProcessPrivilege 2296 WMIC.exe Token: SeIncBasePriorityPrivilege 2296 WMIC.exe Token: SeCreatePagefilePrivilege 2296 WMIC.exe Token: SeBackupPrivilege 2296 WMIC.exe Token: SeRestorePrivilege 2296 WMIC.exe Token: SeShutdownPrivilege 2296 WMIC.exe Token: SeDebugPrivilege 2296 WMIC.exe Token: SeSystemEnvironmentPrivilege 2296 WMIC.exe Token: SeRemoteShutdownPrivilege 2296 WMIC.exe Token: SeUndockPrivilege 2296 WMIC.exe Token: SeManageVolumePrivilege 2296 WMIC.exe Token: 33 2296 WMIC.exe Token: 34 2296 WMIC.exe Token: 35 2296 WMIC.exe Token: 36 2296 WMIC.exe Token: SeIncreaseQuotaPrivilege 2296 WMIC.exe Token: SeSecurityPrivilege 2296 WMIC.exe Token: SeTakeOwnershipPrivilege 2296 WMIC.exe Token: SeLoadDriverPrivilege 2296 WMIC.exe Token: SeSystemProfilePrivilege 2296 WMIC.exe Token: SeSystemtimePrivilege 2296 WMIC.exe Token: SeProfSingleProcessPrivilege 2296 WMIC.exe Token: SeIncBasePriorityPrivilege 2296 WMIC.exe Token: SeCreatePagefilePrivilege 2296 WMIC.exe Token: SeBackupPrivilege 2296 WMIC.exe Token: SeRestorePrivilege 2296 WMIC.exe Token: SeShutdownPrivilege 2296 WMIC.exe Token: SeDebugPrivilege 2296 WMIC.exe Token: SeSystemEnvironmentPrivilege 2296 WMIC.exe Token: SeRemoteShutdownPrivilege 2296 WMIC.exe Token: SeUndockPrivilege 2296 WMIC.exe Token: SeManageVolumePrivilege 2296 WMIC.exe Token: 33 2296 WMIC.exe Token: 34 2296 WMIC.exe Token: 35 2296 WMIC.exe Token: 36 2296 WMIC.exe Token: SeBackupPrivilege 3156 wbengine.exe Token: SeRestorePrivilege 3156 wbengine.exe Token: SeSecurityPrivilege 3156 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4444 wrote to memory of 5080 4444 Private Chat V2.0.exe 100 PID 4444 wrote to memory of 5080 4444 Private Chat V2.0.exe 100 PID 5080 wrote to memory of 2344 5080 Private Chat.exe 110 PID 5080 wrote to memory of 2344 5080 Private Chat.exe 110 PID 2344 wrote to memory of 4364 2344 cmd.exe 112 PID 2344 wrote to memory of 4364 2344 cmd.exe 112 PID 2344 wrote to memory of 2296 2344 cmd.exe 116 PID 2344 wrote to memory of 2296 2344 cmd.exe 116 PID 5080 wrote to memory of 3656 5080 Private Chat.exe 117 PID 5080 wrote to memory of 3656 5080 Private Chat.exe 117 PID 3656 wrote to memory of 284 3656 cmd.exe 119 PID 3656 wrote to memory of 284 3656 cmd.exe 119 PID 3656 wrote to memory of 308 3656 cmd.exe 120 PID 3656 wrote to memory of 308 3656 cmd.exe 120 PID 5080 wrote to memory of 2848 5080 Private Chat.exe 121 PID 5080 wrote to memory of 2848 5080 Private Chat.exe 121 PID 2848 wrote to memory of 2296 2848 cmd.exe 123 PID 2848 wrote to memory of 2296 2848 cmd.exe 123 PID 5080 wrote to memory of 4500 5080 Private Chat.exe 127 PID 5080 wrote to memory of 4500 5080 Private Chat.exe 127 -
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.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\Private Chat V2.0.exe"C:\Users\Admin\AppData\Local\Temp\Private Chat V2.0.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4444 -
C:\Users\Admin\AppData\Roaming\Private Chat.exe"C:\Users\Admin\AppData\Roaming\Private Chat.exe"2⤵
- Checks computer location settings
- 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:5080 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2344 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4364
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2296
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:3656 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:284
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:308
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2848 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2296
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt3⤵
- Opens file in notepad (likely ransom note)
PID:4500
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4820
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3156
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4984
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4576
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:81⤵PID:5148
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
124KB
MD58d6cf920922372018823199536ab94b9
SHA1c93931bbdda0f4efe54f5eaa7dd04c362d93689a
SHA25662a1c371bea432fcd5707d25810ab573b6ec269625c59db9539e3939d3fe9554
SHA51211a4499b072c1dabe61c19acb29da374b4d4979c2581bcc49c3bae43f5bec295d03d9af74158152f95310eb3aedfff3bac92c0d9f3f063fba283caeee5c5f41c
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Filesize
1KB
MD5c748d4e5fedf548bc3d2516a68b2055f
SHA11e3bcd8e55cbc0abb37e8812df4be12a4b19ac3d
SHA2561015fb7b4dc41f629cbcf4875ad83df7d1720ae66b5a099ed39c0bdc205b3258
SHA512e7b744a85a87c3695a9a60761459299f4c1a812030498e8de31d034a2934f49882d0228a6fe50dd4cae2d281d4af96348972267664c9431b629459824356487a