General

  • Target

    6f70feca23db40bc38ee96e342114a34c9391b156f0af2f37bd691c155aee845

  • Size

    2.0MB

  • Sample

    240526-3ld2tsgb8x

  • MD5

    d73f74414a8901e5fe110c33426984b6

  • SHA1

    3c3dee0d190b1418cc5037da53064772879d4f63

  • SHA256

    6f70feca23db40bc38ee96e342114a34c9391b156f0af2f37bd691c155aee845

  • SHA512

    cecabc1a921331b71b04f1b13748d005585508d935ed379ed0dcfa136267b71725f4b5e5adbad8407f51496f22613de01bae2c3942afd34b4ed4ff5a5cb8eb14

  • SSDEEP

    49152:OePpQEtJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEttIuoITsdZ

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

      6f70feca23db40bc38ee96e342114a34c9391b156f0af2f37bd691c155aee845

    • Size

      2.0MB

    • MD5

      d73f74414a8901e5fe110c33426984b6

    • SHA1

      3c3dee0d190b1418cc5037da53064772879d4f63

    • SHA256

      6f70feca23db40bc38ee96e342114a34c9391b156f0af2f37bd691c155aee845

    • SHA512

      cecabc1a921331b71b04f1b13748d005585508d935ed379ed0dcfa136267b71725f4b5e5adbad8407f51496f22613de01bae2c3942afd34b4ed4ff5a5cb8eb14

    • SSDEEP

      49152:OePpQEtJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEttIuoITsdZ

    • 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