043308721b7ee6a1a93250a1d013a1a761fef7368c9ab483514c31a1584c86d9 | Triage

Sharing

General

Target

043308721b7ee6a1a93250a1d013a1a761fef7368c9ab483514c31a1584c86d9
Size

566KB
Sample

241029-yeacvayfpp
MD5

67f8b2f83aa50da8186f03e69358c160
SHA1

e9010ec5abfab7162ba0caf507d3246f6680bcdc
SHA256

043308721b7ee6a1a93250a1d013a1a761fef7368c9ab483514c31a1584c86d9
SHA512

66d5392f7a10a4e1beded35b41e3e4c73fba4a2a9cad4139353c29b7cac04fa9babf9049054eaa4c3475e52dc6854734a75a62480eeb8e5258509a90c7aca6df
SSDEEP

6144:etzgx2GdlblXkmatlBF7MuJGSN4r8jZlIPMTaE+q4Ow9waqgpJOuKWK519CkBOwh:e0nlXkXfBFINSdwPbQvbgyv7O/j

Score

9^/10

credential_access discovery exploit persistence ransomware spyware stealer

Malware Config

Targets

- Target
  
  043308721b7ee6a1a93250a1d013a1a761fef7368c9ab483514c31a1584c86d9
- Size
  
  566KB
- MD5
  
  67f8b2f83aa50da8186f03e69358c160
- SHA1
  
  e9010ec5abfab7162ba0caf507d3246f6680bcdc
- SHA256
  
  043308721b7ee6a1a93250a1d013a1a761fef7368c9ab483514c31a1584c86d9
- SHA512
  
  66d5392f7a10a4e1beded35b41e3e4c73fba4a2a9cad4139353c29b7cac04fa9babf9049054eaa4c3475e52dc6854734a75a62480eeb8e5258509a90c7aca6df
- SSDEEP
  
  6144:etzgx2GdlblXkmatlBF7MuJGSN4r8jZlIPMTaE+q4Ow9waqgpJOuKWK519CkBOwh:e0nlXkXfBFINSdwPbQvbgyv7O/j
Score

9^/10

credential_access discovery exploit persistence ransomware spyware stealer
- Renames multiple (8473) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Possible privilege escalation attempt
  exploit
- Credentials from Password Stores: Windows Credential Manager
  Suspicious access to Credentials History.
  credential_access stealer
- Deletes itself
- Executes dropped EXE
- 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
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Credentials from Password Stores

Credentials from Web Browsers

Windows Credential Manager

Unsecured Credentials

Credentials In Files

Discovery

Browser Information Discovery

System Location Discovery

System Language Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

credential_accessdiscoveryexploitpersistenceransomwarespywarestealer

behavioral2

credential_accessdiscoveryexploitpersistenceransomwarespywarestealer