Analysis

  • max time kernel
    42s
  • max time network
    87s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11-02-2023 08:47

General

  • Target

    67f1c7ac6d42dbef538d693299efe53f.exe

  • Size

    576KB

  • MD5

    67f1c7ac6d42dbef538d693299efe53f

  • SHA1

    3f50db5ab472e4b3c26bbd29f8d0ca263aa2d206

  • SHA256

    304fe28472a190be87a8ba280d25c15462adbe87dd31f60ce094fb01e2edbeb5

  • SHA512

    986e01b9dbad0c9814681d1eb724d2dac2493da1a1d36513f32d8c72c8207f34e0618186526a13bd4bed75f6981ed29fbf97a39e599592050064e82d65dc7438

  • SSDEEP

    12288:aCe8LxGQ7MRSRAsDYeQBWlWc4b70eU06zTwjZ++R5Mi6/ZVgCp0TLAXZo:aN88Q7aQjDYLWlhW7JUyZ++R5PyZ5pc5

Malware Config

Signatures

  • Matiex

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

  • Matiex Main payload 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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
  • 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\67f1c7ac6d42dbef538d693299efe53f.exe
    "C:\Users\Admin\AppData\Local\Temp\67f1c7ac6d42dbef538d693299efe53f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1292
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml"
        3⤵
        • Creates scheduled task(s)
        PID:1480
    • C:\Users\Admin\AppData\Local\Temp\67f1c7ac6d42dbef538d693299efe53f.exe
      "C:\Users\Admin\AppData\Local\Temp\67f1c7ac6d42dbef538d693299efe53f.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:964
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 1640
        3⤵
        • Program crash
        PID:1832

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

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

  • C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml
    Filesize

    1KB

    MD5

    64874be9f369ac711ed7544324818c9f

    SHA1

    6a28869bb2496b85316e729fff9f1ad47d86a3c3

    SHA256

    7e044c703725ec8c9d3d3aa2dd7fbadb79fc1d4548f87e4acf1ea5e5db94fb85

    SHA512

    4fdc481e33554babcd1ef18894876415b37b9f6c57c54015a71414b100574a06ac569e42f9d45e58561f53f0f09a4eb022ea8a884beed10f5f3d145f8579e44b

  • memory/964-55-0x000000000040188B-mapping.dmp
  • memory/964-56-0x0000000075B41000-0x0000000075B43000-memory.dmp
    Filesize

    8KB

  • memory/964-59-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/964-61-0x0000000000890000-0x0000000000902000-memory.dmp
    Filesize

    456KB

  • memory/1292-54-0x0000000000000000-mapping.dmp
  • memory/1480-58-0x0000000000000000-mapping.dmp
  • memory/1832-62-0x0000000000000000-mapping.dmp
  • memory/1940-57-0x00000000002CA000-0x00000000002D0000-memory.dmp
    Filesize

    24KB