16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20

Resubmissions

12/10/2022, 06:19

221012-g299bacgaq 10

04/10/2022, 09:54

221004-lw7nfsaeb5 10

Analysis

max time kernel
93s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2022, 09:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
Size

48KB
MD5

4f6173eb23deaff1670b1b2f0f6882fe
SHA1

8b0aa4a785803ebcd71fa71dfe5b3671c1ab6c13
SHA256

16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20
SHA512

192bf3985320e342d6808b5581f2dbcdfaafe57ebd6c08e067b1609568790432f03f7af123e3f7ddeafe94ad2ede11ab295fbc28c9111caf50f66af597e66735
SSDEEP

768:AUAXzPLCUW6R/bUHUWSLa/SET7Q74guCNP:YC16lYHMa7TU3xP

Score

10^/10

persistence ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\RedKrypt-Notes-README.txt

Ransom Note

ALL YOUR FILES HAVE BEEN ENCRYPTED BY THE REDKRYPT RANSOMWARE Why me? RedKrypt doesn't choose victims. Victims choose RedKrypt. How I can recovery my files? You cannot use third party software for decrypt your files: you can use only the official RedKrypt Decryption Tool. Follow this istructions: 1) Copy your decryption ID 2) Write to [email protected] and send your decryption id 3) We'll reply with our conditions, and the decryption tool will be sent to you. YOUR REDKRYPT CLIENT-ID: 36F4858E078BFBFF000306D2

Emails

[email protected]

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4936	RedKryptDecryptor.exe

Modifies extensions of user files 12 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\RenameReset.crw => C:\Users\Admin\Pictures\RenameReset.crw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\UseBlock.png => C:\Users\Admin\Pictures\UseBlock.png.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\ConfirmSkip.tif => C:\Users\Admin\Pictures\ConfirmSkip.tif.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\JoinFind.tif => C:\Users\Admin\Pictures\JoinFind.tif.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\JoinSync.crw => C:\Users\Admin\Pictures\JoinSync.crw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\MergeFind.crw => C:\Users\Admin\Pictures\MergeFind.crw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\OpenLimit.raw => C:\Users\Admin\Pictures\OpenLimit.raw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\PushEnter.crw => C:\Users\Admin\Pictures\PushEnter.crw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\WatchGrant.raw => C:\Users\Admin\Pictures\WatchGrant.raw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\JoinRevoke.crw => C:\Users\Admin\Pictures\JoinRevoke.crw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\PushAdd.raw => C:\Users\Admin\Pictures\PushAdd.raw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File renamed	C:\Users\Admin\Pictures\ResizeUndo.raw => C:\Users\Admin\Pictures\ResizeUndo.raw.p.redkrypt	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.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
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\REDKRYPTdecryptor = "C:\\Users\\Admin\\Desktop\\RedKryptDecryptor.exe"	RedKryptDecryptor.exe

Drops desktop.ini file(s) 37 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\3D Objects\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\OneDrive\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Application Shortcuts\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn1\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn2\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group2\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group3\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group1\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1772	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 4936	1772	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe	86
PID 1772 wrote to memory of 4936	1772	16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe	86

C:\Users\Admin\AppData\Local\Temp\16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe
"C:\Users\Admin\AppData\Local\Temp\16764b173314ddeb7341f18a7b33066a319476847ba715c53c4f0f8e9ed43a20.exe"
1⤵
- Modifies extensions of user files
- Drops startup file
- Drops desktop.ini file(s)
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Users\Admin\Desktop\RedKryptDecryptor.exe
  "C:\Users\Admin\Desktop\RedKryptDecryptor.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:4936

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\Desktop\RedKryptDecryptor.exe

Filesize
28KB

MD5
e17fd90c493ad8f1cbf7cc6d2539fd26

SHA1
343996c6d91fd673a18841fc18539a3486f9cc52

SHA256
2638ad4669db45a9dd7fbdd46a828f51890a108b095b9ebdb8a4c1cd7c1a221b

SHA512
3ed8d6f114a494b45429d8d413110e63effe183229b23f45d866ccae782a854b0b790661d0a891bf3e46d2bd7badd90bc460bdecd8ffb0e440d22e6c40bf62dc

Download Submit
C:\Users\Admin\Desktop\RedKryptDecryptor.exe

Filesize
28KB

MD5
e17fd90c493ad8f1cbf7cc6d2539fd26

SHA1
343996c6d91fd673a18841fc18539a3486f9cc52

SHA256
2638ad4669db45a9dd7fbdd46a828f51890a108b095b9ebdb8a4c1cd7c1a221b

SHA512
3ed8d6f114a494b45429d8d413110e63effe183229b23f45d866ccae782a854b0b790661d0a891bf3e46d2bd7badd90bc460bdecd8ffb0e440d22e6c40bf62dc

Download Submit
memory/1772-132-0x00007FFC2C580000-0x00007FFC2CFB6000-memory.dmp

Filesize
10.2MB

Download
memory/1772-133-0x0000000002E32000-0x0000000002E42000-memory.dmp

Filesize
64KB

Download
memory/1772-134-0x0000000002E72000-0x0000000002E82000-memory.dmp

Filesize
64KB

Download
memory/4936-138-0x00007FFC2C580000-0x00007FFC2CFB6000-memory.dmp

Filesize
10.2MB

Download