General

  • Target

    93968d3ba125b600933bf9d2ca2fc96be5ba96e245bd9e61c7251f8393217285

  • Size

    2.0MB

  • Sample

    240525-ezwxssed87

  • MD5

    9b653493bd4ef94da04866d3759d8d4f

  • SHA1

    eb9aa7551678bf3d308d16e11bfe48ab1d90d6ee

  • SHA256

    93968d3ba125b600933bf9d2ca2fc96be5ba96e245bd9e61c7251f8393217285

  • SHA512

    fe825a81e302d1cabeba2a568f181cd33e08bdb7c310332350dab80907532594249b93a36b5c6527b0fc590fa95c43cdc9fd71e9b939524cb42c421be1401b5e

  • SSDEEP

    49152:s4K3x1vUaJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18atIuoITsdZ

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

      93968d3ba125b600933bf9d2ca2fc96be5ba96e245bd9e61c7251f8393217285

    • Size

      2.0MB

    • MD5

      9b653493bd4ef94da04866d3759d8d4f

    • SHA1

      eb9aa7551678bf3d308d16e11bfe48ab1d90d6ee

    • SHA256

      93968d3ba125b600933bf9d2ca2fc96be5ba96e245bd9e61c7251f8393217285

    • SHA512

      fe825a81e302d1cabeba2a568f181cd33e08bdb7c310332350dab80907532594249b93a36b5c6527b0fc590fa95c43cdc9fd71e9b939524cb42c421be1401b5e

    • SSDEEP

      49152:s4K3x1vUaJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18atIuoITsdZ

    • 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