Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10v200722
  • submitted
    28-08-2020 06:33

General

  • Target

    1XrdOdPqR6jBVMu.exe

  • Size

    507KB

  • MD5

    e5a4d65f4234001c405be18760073317

  • SHA1

    9aaf994aa6cee464fde60749d9a1aba698199b41

  • SHA256

    021f4846815c6c2c0fcd2a808054c52c0569526bd4fb049b47ceb061e822d354

  • SHA512

    27892695e298ac1be6f982b97be4a9da56ed31031c3cb83d8e98815d1676442672aa3626a8a14782e638fa988a96dcb3229c72356374f7193fc8ee7469fdcc69

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    kin.hosting-mexico.net
  • Port:
    26
  • Username:
    rm@timbradompresarial.com
  • Password:
    VN=m3-pILg4f

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 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.

  • 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
  • Drops file in Windows directory 1 IoCs
  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe
    "C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2076
    • C:\Users\Admin\AppData\Local\Temp\1XrdOdPqR6jBVMu.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3932
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:3100
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious use of AdjustPrivilegeToken
      PID:804

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\1XrdOdPqR6jBVMu.exe.log
      MD5

      c06096aa9d34190ba8e1bff54a0c0ddd

      SHA1

      f323e5569d5a914edd51a76ed796799457e80098

      SHA256

      f5d012397631bf3b944ef49a26c9f6115dfb7aea516a2bc8a67119d7fc824271

      SHA512

      52cd129e9b28ac080c292724c27bead11af7851a654e8eae2f98fffbea7bfcac3e0542485f531c2e8ca02b4efdfd2836d1e1ad917b43d24bc31ce91c55f3eafe

    • memory/2076-9-0x0000000007810000-0x0000000007882000-memory.dmp
      Filesize

      456KB

    • memory/2076-6-0x0000000005290000-0x0000000005291000-memory.dmp
      Filesize

      4KB

    • memory/2076-10-0x0000000007980000-0x0000000007981000-memory.dmp
      Filesize

      4KB

    • memory/2076-5-0x0000000005000000-0x0000000005001000-memory.dmp
      Filesize

      4KB

    • memory/2076-11-0x000000000B240000-0x000000000B2D8000-memory.dmp
      Filesize

      608KB

    • memory/2076-7-0x0000000005300000-0x0000000005303000-memory.dmp
      Filesize

      12KB

    • memory/2076-8-0x00000000074C0000-0x00000000074C1000-memory.dmp
      Filesize

      4KB

    • memory/2076-1-0x0000000000770000-0x0000000000771000-memory.dmp
      Filesize

      4KB

    • memory/2076-4-0x0000000005050000-0x0000000005051000-memory.dmp
      Filesize

      4KB

    • memory/2076-3-0x0000000005660000-0x0000000005661000-memory.dmp
      Filesize

      4KB

    • memory/2076-0-0x0000000073530000-0x0000000073C1E000-memory.dmp
      Filesize

      6.9MB

    • memory/3100-21-0x0000000000000000-mapping.dmp
    • memory/3932-13-0x000000000046D49E-mapping.dmp
    • memory/3932-12-0x0000000000400000-0x0000000000472000-memory.dmp
      Filesize

      456KB

    • memory/3932-15-0x0000000073530000-0x0000000073C1E000-memory.dmp
      Filesize

      6.9MB

    • memory/3932-20-0x0000000004ED0000-0x0000000004ED1000-memory.dmp
      Filesize

      4KB

    • memory/3932-22-0x00000000065C0000-0x00000000065C1000-memory.dmp
      Filesize

      4KB