General

  • Target

    fc80f7f615d4130160c30ec1c8e4cd885a7f42978ead2509cfdd350ad3547882.dll

  • Size

    646KB

  • Sample

    220202-w4s55sbagl

  • MD5

    a04d8167d9f4313b9f1e6ba38900306c

  • SHA1

    3f0c0c5555707a52247b91452c75692c1f30c8b6

  • SHA256

    fc80f7f615d4130160c30ec1c8e4cd885a7f42978ead2509cfdd350ad3547882

  • SHA512

    e53147644d7e062eded21378e70538d4124fde41c72b228e6f3790f770a2e2f93daeac080884fc37eab6b74c8c7ab70684c20e915f4e599be5d6ec8233ddefbf

Malware Config

Extracted

Family

vidar

Version

50

Botnet

1131

C2

https://mastodon.social/@prophef6

https://noc.social/@prophef5

Attributes
  • profile_id

    1131

Targets

    • Target

      fc80f7f615d4130160c30ec1c8e4cd885a7f42978ead2509cfdd350ad3547882.dll

    • Size

      646KB

    • MD5

      a04d8167d9f4313b9f1e6ba38900306c

    • SHA1

      3f0c0c5555707a52247b91452c75692c1f30c8b6

    • SHA256

      fc80f7f615d4130160c30ec1c8e4cd885a7f42978ead2509cfdd350ad3547882

    • SHA512

      e53147644d7e062eded21378e70538d4124fde41c72b228e6f3790f770a2e2f93daeac080884fc37eab6b74c8c7ab70684c20e915f4e599be5d6ec8233ddefbf

    • SystemBC

      SystemBC is a proxy and remote administration tool first seen in 2019.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

      suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2

      suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

      suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

    • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

      suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

      suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

      suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Vidar Stealer

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • 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.

    • Checks whether UAC is enabled

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks