General

  • Target
    RFQ OM - RFQ No. OM-1267-V .exe
  • Size 65KB
  • Sample220526-ds2c9sfhd6
  • SHA256 41257a21d27bcb773bb43e7b23c918d5ea4135a868b915d0fb738cd5c19af256
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • oski

C2
  • yungfang.co.vu

Targets

    • Target
      RFQ OM - RFQ No. OM-1267-V .exe
    • Size 65KB
    • SHA256 41257a21d27bcb773bb43e7b23c918d5ea4135a868b915d0fb738cd5c19af256
    • 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 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/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

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Loads dropped DLL

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks