General

  • Target

    b4fd099f95248286fb005d5fc93399d9.exe

  • Size

    477KB

  • Sample

    220301-vzabssahc6

  • MD5

    b4fd099f95248286fb005d5fc93399d9

  • SHA1

    4fca12d0d25a2115b5958de3aa9830f36361fbbb

  • SHA256

    d8924e2835e52e70b5c4fa4fa0a91e9b06776f778d065d62773a4564586d486c

  • SHA512

    05c742c18b03adb4153f1f921311f4aaba01ddc04cd329a8079bd9b56db46ab45cfae32c7a88db3becde49f76859a6c24452fa6dbd1c1738bb0d59e8aa45f2ef

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1474029845:AAESF02q0JZytndFFaKINAGOHrylDk8NpJA/sendMessage?chat_id=1481651786

Targets

    • Target

      b4fd099f95248286fb005d5fc93399d9.exe

    • Size

      477KB

    • MD5

      b4fd099f95248286fb005d5fc93399d9

    • SHA1

      4fca12d0d25a2115b5958de3aa9830f36361fbbb

    • SHA256

      d8924e2835e52e70b5c4fa4fa0a91e9b06776f778d065d62773a4564586d486c

    • SHA512

      05c742c18b03adb4153f1f921311f4aaba01ddc04cd329a8079bd9b56db46ab45cfae32c7a88db3becde49f76859a6c24452fa6dbd1c1738bb0d59e8aa45f2ef

    • 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.

    • 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