Overview

overview

10

Static

static

Tax Invoic...2).exe

windows7_x64

10

Tax Invoic...2).exe

windows10-2004_x64

10

Analysis

  • max time kernel
    155s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    02-05-2022 21:30

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General

  • Target

    Tax Invoices IN102738 IN102739 IN102740 (2).exe

  • Size

    867KB

  • MD5

    1edc97d794a36b1e6c0c4757f56becad

  • SHA1

    8ff5c4d412ac10443a79e02f80579c1d5f0c53e2

  • SHA256

    d2e9e5d1c73e145f6ca508dd8f1397ea4ce5fa1172468889f65133f0af0d08ea

  • SHA512

    e820ea714c71e671557e3e2b32c4c6690cd48f04cd3c5480cf4822a3acb51e522577fc3e500f7fe4b473f7c8a210987b36268ec8bcbe08c8f4766dc3f9876917

Score
10/10
matiexcollectionkeyloggerspywarestealer

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:     smtp
  • Host:
    srvc13.turhost.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    italik2015

Signatures

  • Matiex

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

    stealerkeyloggermatiex
  • Matiex Main Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    spywarestealer
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Tax Invoices IN102738 IN102739 IN102740 (2).exe
    "C:\Users\Admin\AppData\Local\Temp\Tax Invoices IN102738 IN102739 IN102740 (2).exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1004
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eRRgZe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2C08.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3568
    • C:\Users\Admin\AppData\Local\Temp\Tax Invoices IN102738 IN102739 IN102740 (2).exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2444
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2444 -s 2016
        3⤵
        • Program crash
        PID:5024
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2444 -ip 2444
    1⤵
      PID:2224

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Credential Access

    Credentials in Files

    2
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Data from Local System

    2
    T1005

    Email Collection

    1
    T1114

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Tax Invoices IN102738 IN102739 IN102740 (2).exe.log
      Filesize

      1KB

      MD5

      400f1cc1a0a0ce1cdabda365ab3368ce

      SHA1

      1ecf683f14271d84f3b6063493dce00ff5f42075

      SHA256

      c8fa64f4b69df13ed6408fd4a204f318a36c2f38c85d4a4d42adfc9173f73765

      SHA512

      14c8cfd58d097e5e89c8cabe1e665173f1ccf604a9ef70cdcb84116e265f90819c19c891be408e0ad7e29086a5c2ea2883b7a7d1184878dbbac63e2cabcd1c45

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\tmp2C08.tmp
      Filesize

      1KB

      MD5

      67589ef7ded77b99dd02d13571db1556

      SHA1

      8fef20515b52eedc116d0dbf18675be54e34d1db

      SHA256

      f28f5cf5b04eb54345d4061abd0a0aeed1ccadd650b135bd7188401edf65be24

      SHA512

      aac3900f1f6e72ea03761977548d3aa75d1e577be3ee248c347d4a584def26362853d413db0662ed5f830d65b1f36ab00a63b2c75c879ab8d5ebe1a298dd4c91

      Download Submit
    • memory/1004-130-0x00000000006E0000-0x00000000007C2000-memory.dmp
      Filesize

      904KB

      Download
    • memory/1004-131-0x0000000007F10000-0x00000000084B4000-memory.dmp
      Filesize

      5.6MB

      Download
    • memory/1004-132-0x0000000007B00000-0x0000000007B92000-memory.dmp
      Filesize

      584KB

      Download
    • memory/1004-133-0x0000000007AC0000-0x0000000007ACA000-memory.dmp
      Filesize

      40KB

      Download
    • memory/1004-134-0x000000000A390000-0x000000000A42C000-memory.dmp
      Filesize

      624KB

      Download
    • memory/2444-137-0x0000000000000000-mapping.dmp
      Download
    • memory/2444-138-0x0000000000400000-0x0000000000476000-memory.dmp
      Filesize

      472KB

      Download
    • memory/2444-140-0x0000000005060000-0x00000000050C6000-memory.dmp
      Filesize

      408KB

      Download
    • memory/3568-135-0x0000000000000000-mapping.dmp
      Download