General

  • Target

    a42b02b5982a9377fda991f5da92e16a8cc3330104e257b80f36da6b85eeb0c5

  • Size

    1.9MB

  • Sample

    240527-kj93dadh7w

  • MD5

    4eba330661f361a3ac57e84eaf8af125

  • SHA1

    06828942abc7cde3ca374aca1608562d7eefab1a

  • SHA256

    a42b02b5982a9377fda991f5da92e16a8cc3330104e257b80f36da6b85eeb0c5

  • SHA512

    81781cc58cce0119eb6eed4d97777d28c58fb7da4a3785c6334934c61fd586e86a5b6aea6d15e696aff79109bf195154a54148cc11e205b9d9624011681b0b7d

  • SSDEEP

    49152:CdKfTn6veJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn9tIuoITsdZ

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

      a42b02b5982a9377fda991f5da92e16a8cc3330104e257b80f36da6b85eeb0c5

    • Size

      1.9MB

    • MD5

      4eba330661f361a3ac57e84eaf8af125

    • SHA1

      06828942abc7cde3ca374aca1608562d7eefab1a

    • SHA256

      a42b02b5982a9377fda991f5da92e16a8cc3330104e257b80f36da6b85eeb0c5

    • SHA512

      81781cc58cce0119eb6eed4d97777d28c58fb7da4a3785c6334934c61fd586e86a5b6aea6d15e696aff79109bf195154a54148cc11e205b9d9624011681b0b7d

    • SSDEEP

      49152:CdKfTn6veJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn9tIuoITsdZ

    • 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