General

  • Target

    5229bb2c720b5044459cdafa2eadcf140054609488df98c4eb7c5b628a798a37

  • Size

    2.0MB

  • Sample

    240524-vj9fyscg2y

  • MD5

    75165714fba3c7d7a36c9418c94c90ba

  • SHA1

    ac01c280c585c6a92ebf272fa183a6a137e778f3

  • SHA256

    5229bb2c720b5044459cdafa2eadcf140054609488df98c4eb7c5b628a798a37

  • SHA512

    7fcaee9bce66bbc5874605f2b981adef95ccc5d041b2bf7fb9d049aad76810e01ce1468bd0ee8159ebe763363a05a5dbc66fd5462ccada8abb516bd6517dbd6a

  • SSDEEP

    49152:s4K3x1vUOJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18OtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      5229bb2c720b5044459cdafa2eadcf140054609488df98c4eb7c5b628a798a37

    • Size

      2.0MB

    • MD5

      75165714fba3c7d7a36c9418c94c90ba

    • SHA1

      ac01c280c585c6a92ebf272fa183a6a137e778f3

    • SHA256

      5229bb2c720b5044459cdafa2eadcf140054609488df98c4eb7c5b628a798a37

    • SHA512

      7fcaee9bce66bbc5874605f2b981adef95ccc5d041b2bf7fb9d049aad76810e01ce1468bd0ee8159ebe763363a05a5dbc66fd5462ccada8abb516bd6517dbd6a

    • SSDEEP

      49152:s4K3x1vUOJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18OtIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Tasks