General

  • Target

    ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08

  • Size

    2.0MB

  • Sample

    240526-kb9rmscd2x

  • MD5

    ac1cc39dc3df2ab7197ec22259a09e17

  • SHA1

    6716724fad0181e499477b7ef431ede9223fdc89

  • SHA256

    ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08

  • SHA512

    ab0af5cb8f712db3b7d5a281a05b60ee952f2572261b0ad74e659fe09cec480430ece369d7e3970c864db91728bc760f9f4f2af220bc6009fb87ed801ac9a771

  • 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

      ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08

    • Size

      2.0MB

    • MD5

      ac1cc39dc3df2ab7197ec22259a09e17

    • SHA1

      6716724fad0181e499477b7ef431ede9223fdc89

    • SHA256

      ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08

    • SHA512

      ab0af5cb8f712db3b7d5a281a05b60ee952f2572261b0ad74e659fe09cec480430ece369d7e3970c864db91728bc760f9f4f2af220bc6009fb87ed801ac9a771

    • 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