General

  • Target
    New Bank Details.exe
  • Size 689KB
  • Sample210907-h4e2mafddn
  • SHA256 091fb99d751df7e9e867422f401ff7181adc35c6f90ad2c8aafd54e3ec724771
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • oski

C2
  • http://bctpump.us

Targets

    • Target
      New Bank Details.exe
    • Size 689KB
    • SHA256 091fb99d751df7e9e867422f401ff7181adc35c6f90ad2c8aafd54e3ec724771
    • MD5 SHA1 SHA512
    • Oski

      Oski is an infostealer targeting browser data, crypto wallets.

    • 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 Vidar/Arkei/Megumin/Oski Stealer Data Exfil

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

    • Downloads MZ/PE file

    • Loads dropped DLL

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks