General

  • Target

    4e8e0745c51a4fc3589d7d6f894e94e06e14108e4d72a37e3d80d7e81e0d63dd

  • Size

    2.0MB

  • Sample

    240525-bwcg7saa96

  • MD5

    0112d0f3f370bb3276dc5eb4e4d7a632

  • SHA1

    d3aa87f36f4a8956020fed75746ee54a1beced20

  • SHA256

    4e8e0745c51a4fc3589d7d6f894e94e06e14108e4d72a37e3d80d7e81e0d63dd

  • SHA512

    661299178fc76044b9e10e047435c0ef127e07ab0883c2c648f9ac008ae282a04a7acd83bd0e5f5a4ff81cca302cc3efa60adad10e686cba177c1558802b22b7

  • SSDEEP

    49152:s4K3x1vUSJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18StIuoITsdZ

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

      4e8e0745c51a4fc3589d7d6f894e94e06e14108e4d72a37e3d80d7e81e0d63dd

    • Size

      2.0MB

    • MD5

      0112d0f3f370bb3276dc5eb4e4d7a632

    • SHA1

      d3aa87f36f4a8956020fed75746ee54a1beced20

    • SHA256

      4e8e0745c51a4fc3589d7d6f894e94e06e14108e4d72a37e3d80d7e81e0d63dd

    • SHA512

      661299178fc76044b9e10e047435c0ef127e07ab0883c2c648f9ac008ae282a04a7acd83bd0e5f5a4ff81cca302cc3efa60adad10e686cba177c1558802b22b7

    • SSDEEP

      49152:s4K3x1vUSJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18StIuoITsdZ

    • 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