Analysis

  • max time kernel
    135s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    30-06-2020 08:58

General

  • Target

    invoice - OP234156.exe

  • Size

    1.0MB

  • MD5

    7dd09efa0dbec9e5859058990bae29be

  • SHA1

    799c2be5ff5774803b13b3aebaaa292f4cb53e01

  • SHA256

    5de19be53ca23befa21883db456fb708b1a47bd399aa93ab5794d6a2ef9aede3

  • SHA512

    357436e8139492f1d2cf4429730ce22ce067cf6c031f1c3814f168c4e59e5fdcea3a665395c0116ab52c3e234dcedcf260318d77f952b5dab4d966555e966b28

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    john5on.muller@yandex.com
  • Password:
    41k2c4yfVG

Signatures

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Suspicious use of WriteProcessMemory 37 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\invoice - OP234156.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice - OP234156.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    PID:3748
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wUhohFkzV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7AF7.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3836
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
      "{path}"
      2⤵
        PID:3928
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
        "{path}"
        2⤵
          PID:4016
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
          "{path}"
          2⤵
            PID:3800
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
            "{path}"
            2⤵
              PID:1880
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
              "{path}"
              2⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              • Suspicious use of SetThreadContext
              • Suspicious use of AdjustPrivilegeToken
              PID:3992
              • C:\Windows\SysWOW64\schtasks.exe
                "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TrbHIOAUntKXQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp19C.tmp"
                3⤵
                • Creates scheduled task(s)
                PID:1044
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
                "{path}"
                3⤵
                  PID:1360
                • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
                  "{path}"
                  3⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1412

            Network

            MITRE ATT&CK Matrix ATT&CK v6

            Execution

            Scheduled Task

            1
            T1053

            Persistence

            Scheduled Task

            1
            T1053

            Privilege Escalation

            Scheduled Task

            1
            T1053

            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_v2.0_32\UsageLogs\RegSvcs.exe.log
            • C:\Users\Admin\AppData\Local\Temp\tmp19C.tmp
            • C:\Users\Admin\AppData\Local\Temp\tmp7AF7.tmp
            • memory/1044-4-0x0000000000000000-mapping.dmp
            • memory/1412-6-0x0000000000400000-0x000000000044C000-memory.dmp
              Filesize

              304KB

            • memory/1412-7-0x0000000000446A5E-mapping.dmp
            • memory/3836-0-0x0000000000000000-mapping.dmp
            • memory/3992-2-0x0000000000400000-0x00000000004B0000-memory.dmp
              Filesize

              704KB

            • memory/3992-3-0x0000000000476A32-mapping.dmp