darkside | 1b9d3728a2c489d4166e8752525c88cf532db6409cf1147d6955ab4302c89b48

Analysis

max time kernel
146s
max time network
272s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2025, 06:54

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General

Target

19022025_0655_sample.exe
Size

62KB
MD5

bf41fc54f96d0106d34f1c48827006e4
SHA1

cb998d02179f514a537f660046f5014f587fadd8
SHA256

1b9d3728a2c489d4166e8752525c88cf532db6409cf1147d6955ab4302c89b48
SHA512

d061cb6d31a4dab3aaefb7334347566d7678a48fd16d8db5e7ba55142884d50822b4e5877b5de8a14550f125aba13a947514aa789104aac9c538bbd865ea5b54
SSDEEP

1536:Ncw2LbyC+HX4fWEsAWyuAlfV/0Hjpl0PMRmIPT1c/ebioQ+Cf:ND5fHo+9ZyPRViL0PwPof

Score

10^/10

darkside credential_access discovery ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\3D Objects\README.05fb5ce5.TXT

Family

darkside

Ransom Note

----------- [ Welcome to Dark Side] -------------> What happend? ---------------------------------------------- Your computers and servers are encrypted, backups are deleted. We use strong encryption algorithms, so you cannot decrypt your data. But you can restore everything by purchasing a special program from us - universal decryptor. This program will restore all your network. Follow our instructions below and you will recover all your data. Data leak ---------------------------------------------- First of all we have uploaded more then 100 GB data. Example of data: - Accounting data - Executive data - Sales data - Customer Support data - Marketing data - Quality data - And more other... Your personal leak page: http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC The data is preloaded and will be automatically published if you do not pay. After publication, your data will be available for at least 6 months on our tor cdn servers. We are ready: - To provide you the evidence of stolen data - To give you universal decrypting tool for all encrypted files. - To delete all the stolen data. What guarantees? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. We guarantee to decrypt one file for free. Go to the site and contact us. How to get access on website? ---------------------------------------------- Using a TOR browser: 1) Download and install TOR browser from this site: https://torproject.org/ 2) Open our website: http://darksidfqzcuhtk2.onion/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68 When you open our website, put the following data in the input form: Key: pr9gzRnMz6qEwr6ovMT0cbjd9yT56NctfQZGIiVVLgo0ME2EQpAUyZucG9BLrOJjno5XLPvCN11TFfnlFHa42u5mJxoeR5k5RUgQAC1MC6LBUj4YOOAUyiBrR HQSUM3pzGoEPRVOzXSZ8YqkJyFL0TDFBbWaBKQDOSo9GzKKoVRQ0Eb02F5geTPkTAqZZSfSQ6PBBlTGPSgGe2kCyuwwp7lDmRSJlNnHssMMZHVhXzyZ6fxiBY gNiuusFK8JNI5nrtRPp3bMAc6OEddxfJWj6o2GT1Xg9j87Jp4Oyv43E1J61jLJAWBkmoBB3Gqv07mtyDW5PnmxBlNzABbLFEvJMQL23sR8nnw4svzcZHxrqD1 xRcxqyeKtsaQ5yqLvyQgMdnrI2QoCqkHYYUfBIzjO8BXyBZdmjHanXE57jdDAhjaDUUqfL917cCyJr1uwVR0Xj5lJXe8BIKHd3dFrz70CsIXFAhicOsBlFzIn daNcAXXyL8Fg1avIXOcuEkGRDXt8Cs8b3TAB6n4DrbLJdiFjECo8yCA9pxvzqjXatumUloblWFZaUoLVYzP !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!!

URLs

http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC

http://darksidfqzcuhtk2.onion/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68

Signatures

DarkSide
Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.
ransomware darkside
Darkside family
darkside
Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
credential_access stealer

Windows Credential Manager
T1555.004

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\README.05fb5ce5.TXT	19022025_0655_sample.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\README.05fb5ce5.TXT	19022025_0655_sample.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\05fb5ce5.BMP"	19022025_0655_sample.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	19022025_0655_sample.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	19022025_0655_sample.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	19022025_0655_sample.exe

Modifies Control Panel 2 IoCs

defense_evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Control Panel\Desktop	19022025_0655_sample.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Control Panel\Desktop\WallpaperStyle = "10"	19022025_0655_sample.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\05fb5ce5.BMP"	19022025_0655_sample.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.05fb5ce5	19022025_0655_sample.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.05fb5ce5\ = "05fb5ce5"	19022025_0655_sample.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\05fb5ce5\DefaultIcon	19022025_0655_sample.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\05fb5ce5	19022025_0655_sample.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\05fb5ce5\DefaultIcon\ = "C:\\ProgramData\\05fb5ce5.ico"	19022025_0655_sample.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 3872	2516	19022025_0655_sample.exe	86
PID 2516 wrote to memory of 3872	2516	19022025_0655_sample.exe	86
PID 2516 wrote to memory of 3872	2516	19022025_0655_sample.exe	86
PID 3872 wrote to memory of 2588	3872	19022025_0655_sample.exe	88
PID 3872 wrote to memory of 2588	3872	19022025_0655_sample.exe	88
PID 3872 wrote to memory of 2588	3872	19022025_0655_sample.exe	88

C:\Users\Admin\AppData\Local\Temp\19022025_0655_sample.exe
"C:\Users\Admin\AppData\Local\Temp\19022025_0655_sample.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1776

C:\Users\Admin\AppData\Local\Temp\19022025_0655_sample.exe
"C:\Users\Admin\AppData\Local\Temp\19022025_0655_sample.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Users\Admin\AppData\Local\Temp\19022025_0655_sample.exe
  "C:\Users\Admin\AppData\Local\Temp\19022025_0655_sample.exe"
  2⤵
  - Sets desktop wallpaper using registry
  - System Location Discovery: System Language Discovery
  - Modifies Control Panel
  - Modifies data under HKEY_USERS
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3872
- - C:\Users\Admin\AppData\Local\Temp\19022025_0655_sample.exe
    C:\Users\Admin\AppData\Local\Temp\19022025_0655_sample.exe -worker work0 3872 688
    3⤵
    - Drops startup file
    PID:2588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Windows Credential Manager

T1555.004

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact