Analysis

  • max time kernel
    150s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7-20220331-en
  • submitted
    14-04-2022 11:58

General

  • Target

    53833eaa5c4c091fb3e25aa7707d1ff5ecf01aa3a69da439742186466c85042e.exe

  • Size

    562KB

  • MD5

    bb3686437e0d66932c91effd44532f19

  • SHA1

    c48e84822d9fd0ca1735de610d739252fc9266bd

  • SHA256

    53833eaa5c4c091fb3e25aa7707d1ff5ecf01aa3a69da439742186466c85042e

  • SHA512

    08e0b6a16d68ecf2e97a4f5d0ad5be677674d666f10d9a6911941cc34bbe1e3d34c37b842483990e0705fc9ed5790a83023fe539243913199d6b03bb583c3c06

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    mail.spamora.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Emotion1

Signatures

  • Matiex

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

  • Matiex Main Payload 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\53833eaa5c4c091fb3e25aa7707d1ff5ecf01aa3a69da439742186466c85042e.exe
    "C:\Users\Admin\AppData\Local\Temp\53833eaa5c4c091fb3e25aa7707d1ff5ecf01aa3a69da439742186466c85042e.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:768
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v whatsapp /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\appmodule.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1264
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v whatsapp /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\appmodule.exe"
        3⤵
        • Adds Run key to start application
        PID:1536
    • C:\Users\Admin\AppData\Roaming\appmodule.exe
      "C:\Users\Admin\AppData\Roaming\appmodule.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1384
      • C:\Users\Admin\AppData\Roaming\appmodule.exe
        "C:\Users\Admin\AppData\Roaming\appmodule.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1012

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\appmodule.exe

    Filesize

    562KB

    MD5

    bb3686437e0d66932c91effd44532f19

    SHA1

    c48e84822d9fd0ca1735de610d739252fc9266bd

    SHA256

    53833eaa5c4c091fb3e25aa7707d1ff5ecf01aa3a69da439742186466c85042e

    SHA512

    08e0b6a16d68ecf2e97a4f5d0ad5be677674d666f10d9a6911941cc34bbe1e3d34c37b842483990e0705fc9ed5790a83023fe539243913199d6b03bb583c3c06

  • C:\Users\Admin\AppData\Roaming\appmodule.exe

    Filesize

    562KB

    MD5

    bb3686437e0d66932c91effd44532f19

    SHA1

    c48e84822d9fd0ca1735de610d739252fc9266bd

    SHA256

    53833eaa5c4c091fb3e25aa7707d1ff5ecf01aa3a69da439742186466c85042e

    SHA512

    08e0b6a16d68ecf2e97a4f5d0ad5be677674d666f10d9a6911941cc34bbe1e3d34c37b842483990e0705fc9ed5790a83023fe539243913199d6b03bb583c3c06

  • C:\Users\Admin\AppData\Roaming\appmodule.exe

    Filesize

    562KB

    MD5

    bb3686437e0d66932c91effd44532f19

    SHA1

    c48e84822d9fd0ca1735de610d739252fc9266bd

    SHA256

    53833eaa5c4c091fb3e25aa7707d1ff5ecf01aa3a69da439742186466c85042e

    SHA512

    08e0b6a16d68ecf2e97a4f5d0ad5be677674d666f10d9a6911941cc34bbe1e3d34c37b842483990e0705fc9ed5790a83023fe539243913199d6b03bb583c3c06

  • \Users\Admin\AppData\Local\Temp\b35bc50e-fc56-4239-a7d0-bb79118b31c9\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • \Users\Admin\AppData\Roaming\appmodule.exe

    Filesize

    562KB

    MD5

    bb3686437e0d66932c91effd44532f19

    SHA1

    c48e84822d9fd0ca1735de610d739252fc9266bd

    SHA256

    53833eaa5c4c091fb3e25aa7707d1ff5ecf01aa3a69da439742186466c85042e

    SHA512

    08e0b6a16d68ecf2e97a4f5d0ad5be677674d666f10d9a6911941cc34bbe1e3d34c37b842483990e0705fc9ed5790a83023fe539243913199d6b03bb583c3c06

  • memory/768-55-0x0000000000610000-0x000000000063A000-memory.dmp

    Filesize

    168KB

  • memory/768-54-0x0000000000130000-0x00000000001C2000-memory.dmp

    Filesize

    584KB

  • memory/1012-70-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1012-72-0x000000000047204E-mapping.dmp

  • memory/1012-77-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1012-75-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1012-71-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1012-66-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1012-67-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1012-69-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1264-56-0x0000000000000000-mapping.dmp

  • memory/1384-65-0x0000000074E30000-0x0000000074EB0000-memory.dmp

    Filesize

    512KB

  • memory/1384-62-0x0000000000E70000-0x0000000000F02000-memory.dmp

    Filesize

    584KB

  • memory/1384-59-0x0000000000000000-mapping.dmp

  • memory/1384-63-0x0000000000460000-0x000000000047C000-memory.dmp

    Filesize

    112KB

  • memory/1536-57-0x0000000000000000-mapping.dmp