General

  • Target

    af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae

  • Size

    468KB

  • Sample

    220324-yssrcadgc2

  • MD5

    6d054ce190fd0da92b895d7cb5397b03

  • SHA1

    3bd56aa669000a6c19223bda713dc313f8279771

  • SHA256

    af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae

  • SHA512

    58697957dde090133d027b13a18d462c786ac41c11c32faef0b2751e30b37530e0ec9368c3beac6f4077e1d42f89a1a76eb95cacf3c93a2b0d5e8411fcec2e29

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1428011164:AAFKIFGek20EZJPbNxOt7K2R-Cf-IiVGehs/sendMessage?chat_id=1280541017

Targets

    • Target

      af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae

    • Size

      468KB

    • MD5

      6d054ce190fd0da92b895d7cb5397b03

    • SHA1

      3bd56aa669000a6c19223bda713dc313f8279771

    • SHA256

      af5294cacf991f14f15ce90f8be38188b54e46d4fd1d8f509f946d8cde3ef3ae

    • SHA512

      58697957dde090133d027b13a18d462c786ac41c11c32faef0b2751e30b37530e0ec9368c3beac6f4077e1d42f89a1a76eb95cacf3c93a2b0d5e8411fcec2e29

    • Matiex

      Matiex is a keylogger and infostealer first seen in July 2020.

    • Matiex Main Payload

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Drops startup file

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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 Microsoft Outlook profiles

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks