General

  • Target

    SKM_C258 Up21042213080.exe

  • Size

    245KB

  • Sample

    210422-6jdjc2c29x

  • MD5

    4b307765c72ab613ab271134f9f2a818

  • SHA1

    7c16e65a70d92c7a633990c772242a5069b79423

  • SHA256

    a2941f7a8317fef14fd8297468e6dab4f2fb3dec806871dbd4cb7f9c7ade5b4e

  • SHA512

    177f17e4447291f16ab4b174ada22ee214bd67c6df57f04e8dd464c86c6fec0cde27b68066fcae8ec4ee62e9b61ad8b5f331bd1e564315eb5e8341391a30588b

Malware Config

Extracted

Family

oski

C2

45.144.225.118

Extracted

Family

azorult

C2

http://lexusbiscuit.com/OiuBn/index.php

Targets

    • Target

      SKM_C258 Up21042213080.exe

    • Size

      245KB

    • MD5

      4b307765c72ab613ab271134f9f2a818

    • SHA1

      7c16e65a70d92c7a633990c772242a5069b79423

    • SHA256

      a2941f7a8317fef14fd8297468e6dab4f2fb3dec806871dbd4cb7f9c7ade5b4e

    • SHA512

      177f17e4447291f16ab4b174ada22ee214bd67c6df57f04e8dd464c86c6fec0cde27b68066fcae8ec4ee62e9b61ad8b5f331bd1e564315eb5e8341391a30588b

    • Azorult

      An information stealer that was first discovered in 2016, targeting browsing history and passwords.

    • Oski

      Oski is an infostealer targeting browser data, crypto wallets.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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

5
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

5
T1005

Tasks