Overview

overview

10

Static

static

Tax Invoic...2).exe

windows7_x64

10

Tax Invoic...2).exe

windows10-2004_x64

10

Analysis

  • max time kernel
    72s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20220414-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 6 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 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⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eRRgZe" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD1E0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2036
    • C:\Users\Admin\AppData\Local\Temp\Tax Invoices IN102738 IN102739 IN102740 (2).exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1988
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1988 -s 1800
        3⤵
        • Program crash
        PID:1200

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

System Information Discovery

1
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\Temp\tmpD1E0.tmp
    Filesize

    1KB

    MD5

    7d1a81a8119dc78d336245eea7a4645b

    SHA1

    1f8cc5b0465edec35bdc8067615e63af1399672f

    SHA256

    01cfcabd28339622098492f7e54ad227ddcee837917b4d049bb822e54bd6d294

    SHA512

    572a9bb24f94829a84c7b6238a2885c59e78bf19055f67c164cffbb4d486b711395130e1090f739267a33517f4152c931926c9baf9fd0652381a3fb462bc44a2

    Download Submit
  • memory/1200-71-0x0000000000000000-mapping.dmp
    Download
  • memory/1540-54-0x0000000000E40000-0x0000000000F22000-memory.dmp
    Filesize

    904KB

    Download
  • memory/1540-55-0x00000000008E0000-0x00000000008EA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/1540-56-0x0000000004970000-0x0000000004A1A000-memory.dmp
    Filesize

    680KB

    Download
  • memory/1988-65-0x000000000047023E-mapping.dmp
    Download
  • memory/1988-60-0x0000000000400000-0x0000000000476000-memory.dmp
    Filesize

    472KB

    Download
  • memory/1988-62-0x0000000000400000-0x0000000000476000-memory.dmp
    Filesize

    472KB

    Download
  • memory/1988-63-0x0000000000400000-0x0000000000476000-memory.dmp
    Filesize

    472KB

    Download
  • memory/1988-59-0x0000000000400000-0x0000000000476000-memory.dmp
    Filesize

    472KB

    Download
  • memory/1988-64-0x0000000000400000-0x0000000000476000-memory.dmp
    Filesize

    472KB

    Download
  • memory/1988-67-0x0000000000400000-0x0000000000476000-memory.dmp
    Filesize

    472KB

    Download
  • memory/1988-69-0x0000000000400000-0x0000000000476000-memory.dmp
    Filesize

    472KB

    Download
  • memory/1988-70-0x0000000074B51000-0x0000000074B53000-memory.dmp
    Filesize

    8KB

    Download
  • memory/2036-57-0x0000000000000000-mapping.dmp
    Download