Analysis

  • max time kernel
    57s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20-01-2023 13:22

General

  • Target

    b9713bbd42cc46a3c53e391a5e0925968b5b335205a02866fb4edeb2b337226c.exe

  • Size

    608KB

  • MD5

    4622942793ebac6a734337176a346809

  • SHA1

    5c7c0cceb1d1ecdd052e29a9e6a46e4ea3cfb282

  • SHA256

    b9713bbd42cc46a3c53e391a5e0925968b5b335205a02866fb4edeb2b337226c

  • SHA512

    a7164f6a8b9d555efd12bebb3801834c539c73090fdc0cfc436c4b0a53a324169af9b8ba21bb7e2b81698e14ea92da5d0fe477563a323ebeaced40a1870392a6

  • SSDEEP

    12288:YqoOQ5sHbNuZpA/uOr3YZnQlRZDynctXm2sThT6ycNYn:X1Q4oZpA2Or3YuyctW2K6Fm

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    wise101@bajajindai.net
  • Password:
    ze5qw@iC?1E}

Signatures

  • Matiex

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

  • Matiex Main payload 6 IoCs
  • Reads user/profile data of local email clients 2 TTPs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b9713bbd42cc46a3c53e391a5e0925968b5b335205a02866fb4edeb2b337226c.exe
    "C:\Users\Admin\AppData\Local\Temp\b9713bbd42cc46a3c53e391a5e0925968b5b335205a02866fb4edeb2b337226c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\Temp\b9713bbd42cc46a3c53e391a5e0925968b5b335205a02866fb4edeb2b337226c.exe
      "C:\Users\Admin\AppData\Local\Temp\b9713bbd42cc46a3c53e391a5e0925968b5b335205a02866fb4edeb2b337226c.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1356

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1356-57-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/1356-58-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/1356-60-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/1356-61-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/1356-62-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/1356-63-0x000000000046BEDE-mapping.dmp
  • memory/1356-65-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/1356-67-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/1780-54-0x0000000000BC0000-0x0000000000C58000-memory.dmp
    Filesize

    608KB

  • memory/1780-55-0x00000000762F1000-0x00000000762F3000-memory.dmp
    Filesize

    8KB

  • memory/1780-56-0x0000000002060000-0x00000000020EE000-memory.dmp
    Filesize

    568KB