zhen | 18f4123ee42f5a29f8df7bd1cf95ab73441f082584f390aa218c2dd1134f4055

Resubmissions

20-09-2020 09:53

200920-9rh6v6y6ga 10

20-09-2020 09:09

200920-94a3wvdaln 10

20-09-2020 07:26

200920-gyqrj2hcqj 10

20-09-2020 07:11

200920-xak2q5j4ha 10

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General

Target

ioxyfx.dat
Size

7.1MB
Sample

200920-94a3wvdaln
MD5

d5f9fa1a8dca5319432f51a5891f7794
SHA1

2a937328f5b99eccb9b8c13ed71d6ffb9dff4521
SHA256

18f4123ee42f5a29f8df7bd1cf95ab73441f082584f390aa218c2dd1134f4055
SHA512

87013b63a9b153c5268784928394dfbf1eeff1b91eea6bdf187025e63d25c535e468e59a33f47d23682a386605bb314311e50a7edd1d6deb1b60f5008237a7d0

Score

10^/10

Malware Config

Targets

- Target
  
  ioxyfx.dat
- Size
  
  7.1MB
- MD5
  
  d5f9fa1a8dca5319432f51a5891f7794
- SHA1
  
  2a937328f5b99eccb9b8c13ed71d6ffb9dff4521
- SHA256
  
  18f4123ee42f5a29f8df7bd1cf95ab73441f082584f390aa218c2dd1134f4055
- SHA512
  
  87013b63a9b153c5268784928394dfbf1eeff1b91eea6bdf187025e63d25c535e468e59a33f47d23682a386605bb314311e50a7edd1d6deb1b60f5008237a7d0
Score

10^/10

zhen discovery evasion exploit persistence pyinstaller ransomware spyware bootkit
- Deletes Windows Defender Definitions
  Uses mpcmdrun utility to delete all AV definitions.
  evasion
- Zhen Executable
- Zhen Ransomware
  First seen in September 2020. Drops ransomnote as .ini file.
  ransomware zhen
- Executes dropped EXE
- Modifies WinLogon to allow AutoLogon
  Enables rebooting of the machine without requiring login credentials.
  ransomware bootkit
- Modifies extensions of user files
  Ransomware generally changes the extension on encrypted files.
  ransomware
- Possible privilege escalation attempt
  exploit
- Loads dropped DLL
- Modifies file permissions
  discovery
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware
- Adds Run key to start application
  persistence
- Drops file in System32 directory
- Sets desktop wallpaper using registry
  ransomware
behavioral1 behavioral2

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Impair Defenses

T1562

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Tasks

Resubmissions

Sharing

General

Malware Config

Targets

Deletes Windows Defender Definitions

Zhen Executable

Zhen Ransomware

Executes dropped EXE

Modifies WinLogon to allow AutoLogon

Modifies extensions of user files

Possible privilege escalation attempt

Loads dropped DLL

Modifies file permissions

Reads user/profile data of web browsers

Adds Run key to start application

Drops file in System32 directory

Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v6

Tasks

static1

behavioral1

behavioral2