zhen | e693ba3857027dd1c9e234dcadd35e76a96b2fa9b34a618f2b4a2b3b9403cf2d | Triage

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Overview

overview

Static

static

e693ba3857...2d.exe

windows7_x64

e693ba3857...2d.exe

windows10-2004_x64

8

Sharing

General

Target

e693ba3857027dd1c9e234dcadd35e76a96b2fa9b34a618f2b4a2b3b9403cf2d
Size

7.4MB
Sample

220419-dhv4haghek
MD5

1cf5dd5e5b0074edcba997bb52ca95ca
SHA1

aa64c566f081986367b805ce3093f188b7fa9af8
SHA256

e693ba3857027dd1c9e234dcadd35e76a96b2fa9b34a618f2b4a2b3b9403cf2d
SHA512

7373691c3a14fe7c4bfcbee3c9e0cf671a06ebe2ddfb011bca34e71edf2593cdd47ec08d32d0d46974da5a40ddf1d86c033574612756a308507dd9e7796c8134

Score

10^/10

zhen discovery evasion exploit persistence ransomware spyware stealer

Static task

static1

Behavioral task

behavioral1

Sample

e693ba3857027dd1c9e234dcadd35e76a96b2fa9b34a618f2b4a2b3b9403cf2d.exe

Resource

win7-20220414-en

zhen discovery evasion exploit persistence ransomware spyware stealer

windows7_x64

0 signatures

0 seconds

Behavioral task

behavioral2

Sample

e693ba3857027dd1c9e234dcadd35e76a96b2fa9b34a618f2b4a2b3b9403cf2d.exe

Resource

win10v2004-20220414-en

windows10-2004_x64

0 signatures

0 seconds

Malware Config

Targets

- Target
  
  e693ba3857027dd1c9e234dcadd35e76a96b2fa9b34a618f2b4a2b3b9403cf2d
- Size
  
  7.4MB
- MD5
  
  1cf5dd5e5b0074edcba997bb52ca95ca
- SHA1
  
  aa64c566f081986367b805ce3093f188b7fa9af8
- SHA256
  
  e693ba3857027dd1c9e234dcadd35e76a96b2fa9b34a618f2b4a2b3b9403cf2d
- SHA512
  
  7373691c3a14fe7c4bfcbee3c9e0cf671a06ebe2ddfb011bca34e71edf2593cdd47ec08d32d0d46974da5a40ddf1d86c033574612756a308507dd9e7796c8134
Score

10^/10

zhen discovery evasion exploit persistence ransomware spyware stealer
- Deletes Windows Defender Definitions
  Uses mpcmdrun utility to delete all AV definitions.
  evasion
- Zhen Ransomware
  First seen in September 2020. Drops ransomnote as .ini file.
  ransomware zhen
- Executes dropped EXE
- Modifies extensions of user files
  Ransomware generally changes the extension on encrypted files.
  ransomware
- Possible privilege escalation attempt
  exploit
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- 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 stealer
- 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

Persistence

Registry Run Keys / Startup Folder

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

Impair Defenses

Modify Registry

Credential Access

Credentials in Files

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Defacement

Tasks

static1

behavioral1

zhendiscoveryevasionexploitpersistenceransomwarespywarestealer

behavioral2

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