General

  • Target

    SecuriteInfo.com.Trojan.Siggen17.51840.28598.22391

  • Size

    533KB

  • Sample

    220517-jhkwesbcgr

  • MD5

    7b10b8b40ff00cd26af35a791d2f7894

  • SHA1

    173b914f1131d607fa9607ec9330b005474e8045

  • SHA256

    95e67dec1a50e9a83fbb5b430c1b21b851e1f0aa8da0ee9efbece3085ad4c462

  • SHA512

    da6bfdcde04b81309193623d7c45736a1aaa865505f1b99789df8008260e1eeb211ce091179426022ed3d8d078e75a157122506e76098f26325335409138736f

Malware Config

Extracted

Family

oski

C2

unitech.co.vu

Targets

    • Target

      SecuriteInfo.com.Trojan.Siggen17.51840.28598.22391

    • Size

      533KB

    • MD5

      7b10b8b40ff00cd26af35a791d2f7894

    • SHA1

      173b914f1131d607fa9607ec9330b005474e8045

    • SHA256

      95e67dec1a50e9a83fbb5b430c1b21b851e1f0aa8da0ee9efbece3085ad4c462

    • SHA512

      da6bfdcde04b81309193623d7c45736a1aaa865505f1b99789df8008260e1eeb211ce091179426022ed3d8d078e75a157122506e76098f26325335409138736f

    • 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

    • 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 Enterprise v6

Tasks