Analysis

  • max time kernel
    135s
  • max time network
    176s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    18-04-2022 10:53

General

  • Target

    e97eb4c69c852bc11196e42af00aac74903f6093f253bdab650df2c747df1087.exe

  • Size

    970KB

  • MD5

    4dec4e571974acfd903c9c9e6d554e19

  • SHA1

    b7503c0e814605983b0b896dc71f354be2f410a2

  • SHA256

    e97eb4c69c852bc11196e42af00aac74903f6093f253bdab650df2c747df1087

  • SHA512

    089772ffba6de7c359b1cb8c49b1cd6b6c002a932c01bf74f49023df515ae241429821184cc59e168e52e003730f89706b148c716954a00594b70f603aa0969d

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    vbdftvthblxjhmhi

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    vbdftvthblxjhmhi

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
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e97eb4c69c852bc11196e42af00aac74903f6093f253bdab650df2c747df1087.exe
    "C:\Users\Admin\AppData\Local\Temp\e97eb4c69c852bc11196e42af00aac74903f6093f253bdab650df2c747df1087.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1732
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\weVsPguwy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5707.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1068
    • C:\Users\Admin\AppData\Local\Temp\e97eb4c69c852bc11196e42af00aac74903f6093f253bdab650df2c747df1087.exe
      "C:\Users\Admin\AppData\Local\Temp\e97eb4c69c852bc11196e42af00aac74903f6093f253bdab650df2c747df1087.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1584

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp5707.tmp
    Filesize

    1KB

    MD5

    986cbe1608fe9f6b00970046d052dfbb

    SHA1

    36ea54ac6c5e1f2ad87cf41498e198846e0d3e1b

    SHA256

    6241ca6dc07af5e9fb8a7429e5ba0a3831555a3c9eaedf511fc93b57ca22c757

    SHA512

    6902882379792c4aec6d33ca340cb6319e6039a5622788eb829962153cf43756680990410efd87ab81a449c3c6901df89457e95b5df5a339ab2720cf511dd40d

  • memory/1068-58-0x0000000000000000-mapping.dmp
  • memory/1584-64-0x0000000000400000-0x0000000000474000-memory.dmp
    Filesize

    464KB

  • memory/1584-60-0x0000000000400000-0x0000000000474000-memory.dmp
    Filesize

    464KB

  • memory/1584-61-0x0000000000400000-0x0000000000474000-memory.dmp
    Filesize

    464KB

  • memory/1584-63-0x0000000000400000-0x0000000000474000-memory.dmp
    Filesize

    464KB

  • memory/1584-65-0x0000000000400000-0x0000000000474000-memory.dmp
    Filesize

    464KB

  • memory/1584-66-0x000000000046E0BE-mapping.dmp
  • memory/1584-68-0x0000000000400000-0x0000000000474000-memory.dmp
    Filesize

    464KB

  • memory/1584-70-0x0000000000400000-0x0000000000474000-memory.dmp
    Filesize

    464KB

  • memory/1584-71-0x0000000004C35000-0x0000000004C46000-memory.dmp
    Filesize

    68KB

  • memory/1732-57-0x00000000055E0000-0x0000000005654000-memory.dmp
    Filesize

    464KB

  • memory/1732-56-0x00000000050C0000-0x0000000005142000-memory.dmp
    Filesize

    520KB

  • memory/1732-55-0x0000000000210000-0x0000000000220000-memory.dmp
    Filesize

    64KB

  • memory/1732-54-0x0000000001260000-0x0000000001358000-memory.dmp
    Filesize

    992KB