General

  • Target

    418d379a2131463d8754428c82ae6ff22202c7f44582f692425408ffea66bcbb

  • Size

    2.0MB

  • Sample

    240526-221p4afd5s

  • MD5

    374eb8818192c4c027bed57ad8b70430

  • SHA1

    1868c30e1fdf0d910583d11069f0f60a8736ee09

  • SHA256

    418d379a2131463d8754428c82ae6ff22202c7f44582f692425408ffea66bcbb

  • SHA512

    fe170b74fc2e3142d3aabf77e73aeb0f112e535df691b00bb35aa05e4251de35715521e7b2e09a39c5a1bdd35c49cfaa35f27e1df84f30f0e81700471d6afcd8

  • 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

      418d379a2131463d8754428c82ae6ff22202c7f44582f692425408ffea66bcbb

    • Size

      2.0MB

    • MD5

      374eb8818192c4c027bed57ad8b70430

    • SHA1

      1868c30e1fdf0d910583d11069f0f60a8736ee09

    • SHA256

      418d379a2131463d8754428c82ae6ff22202c7f44582f692425408ffea66bcbb

    • SHA512

      fe170b74fc2e3142d3aabf77e73aeb0f112e535df691b00bb35aa05e4251de35715521e7b2e09a39c5a1bdd35c49cfaa35f27e1df84f30f0e81700471d6afcd8

    • 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