Resubmissions

08/06/2022, 14:06

220608-regzcsaebr10

08/06/2022, 13:56

220608-q8y93adhf610

General

  • Target
    invoice for payment.exe
  • Size 65KB
  • Sample220608-regzcsaebr
  • SHA256 89ec309c384717284199d66d01669738ce37d9fb445a8f7f2259dfd6ca888f5d
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • oski

C2
  • yungfang.co.vu

Targets

    • Target
      invoice for payment.exe
    • Size 65KB
    • SHA256 89ec309c384717284199d66d01669738ce37d9fb445a8f7f2259dfd6ca888f5d
    • 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