General

  • Target

    385a01c35c74812f7398c13083009258893c4570ecccedb2f182555d065bc68d

  • Size

    390KB

  • Sample

    211104-hx5cyadbfj

  • MD5

    22f934036d8405eaf679a08f51babbec

  • SHA1

    95ef18afe610cd1cda291646ee2c45ab8b48177a

  • SHA256

    385a01c35c74812f7398c13083009258893c4570ecccedb2f182555d065bc68d

  • SHA512

    1a132af03a93d796f14539f3b8c6ad3f346bbc88fb97cec7613bdf35ac6af6eb9d821dc41b0d2561a30c622bd47ae8ea3ec49b10bed24323d31810747a1a9502

Malware Config

Extracted

Family

oski

C2

chrisupdated.xyz

Targets

    • Target

      385a01c35c74812f7398c13083009258893c4570ecccedb2f182555d065bc68d

    • Size

      390KB

    • MD5

      22f934036d8405eaf679a08f51babbec

    • SHA1

      95ef18afe610cd1cda291646ee2c45ab8b48177a

    • SHA256

      385a01c35c74812f7398c13083009258893c4570ecccedb2f182555d065bc68d

    • SHA512

      1a132af03a93d796f14539f3b8c6ad3f346bbc88fb97cec7613bdf35ac6af6eb9d821dc41b0d2561a30c622bd47ae8ea3ec49b10bed24323d31810747a1a9502

    • 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

    • 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 Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Tasks