General

  • Target

    d1d1c42d5724469759bd4e2530e69cfc41f0a4285d5aa8486fa9ef668f7150bf

  • Size

    1.9MB

  • Sample

    240527-mk638age5x

  • MD5

    8c7d488d1800fe3d44a3819964579623

  • SHA1

    c79dd17dc87c6adeb04418c15d39de6c691439f8

  • SHA256

    d1d1c42d5724469759bd4e2530e69cfc41f0a4285d5aa8486fa9ef668f7150bf

  • SHA512

    ac84c87ee77cedd82b1c3dada98e47c47ebbab39d42c4d57a8e3ef5ef46d72ca9ff0312ec4fbef12164ec3d15543c13c1afac101cc487db832192b8bf86d1cec

  • SSDEEP

    49152:CdKfTn6vWJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnttIuoITsdZ

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

      d1d1c42d5724469759bd4e2530e69cfc41f0a4285d5aa8486fa9ef668f7150bf

    • Size

      1.9MB

    • MD5

      8c7d488d1800fe3d44a3819964579623

    • SHA1

      c79dd17dc87c6adeb04418c15d39de6c691439f8

    • SHA256

      d1d1c42d5724469759bd4e2530e69cfc41f0a4285d5aa8486fa9ef668f7150bf

    • SHA512

      ac84c87ee77cedd82b1c3dada98e47c47ebbab39d42c4d57a8e3ef5ef46d72ca9ff0312ec4fbef12164ec3d15543c13c1afac101cc487db832192b8bf86d1cec

    • SSDEEP

      49152:CdKfTn6vWJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnttIuoITsdZ

    • 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 Enterprise v15

Tasks