General

  • Target

    e299ae80607c6324ecc9e650e7032ad24673b9f173811f2aa9cb7bed12f3d2fd

  • Size

    2.0MB

  • Sample

    240525-3affhseb5x

  • MD5

    389fa24ed89adf67904aaa0c9f8c0b53

  • SHA1

    217df8071c101d775448bc32f50bede0ea262690

  • SHA256

    e299ae80607c6324ecc9e650e7032ad24673b9f173811f2aa9cb7bed12f3d2fd

  • SHA512

    77b2030e37de8c879656266cdd446182370b1cabae4ca2955c427d93bc41a1cc5b4ef62118331e6d9938421ca9444c86205331fcfa3c13c0ddba6a94c6c416a5

  • SSDEEP

    49152:s4K3x1vUeJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18etIuoITsdZ

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

      e299ae80607c6324ecc9e650e7032ad24673b9f173811f2aa9cb7bed12f3d2fd

    • Size

      2.0MB

    • MD5

      389fa24ed89adf67904aaa0c9f8c0b53

    • SHA1

      217df8071c101d775448bc32f50bede0ea262690

    • SHA256

      e299ae80607c6324ecc9e650e7032ad24673b9f173811f2aa9cb7bed12f3d2fd

    • SHA512

      77b2030e37de8c879656266cdd446182370b1cabae4ca2955c427d93bc41a1cc5b4ef62118331e6d9938421ca9444c86205331fcfa3c13c0ddba6a94c6c416a5

    • SSDEEP

      49152:s4K3x1vUeJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18etIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

4
T1005

Tasks