Analysis

  • max time kernel
    99s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    21-01-2021 18:33

General

  • Target

    davincii.exe

  • Size

    109KB

  • MD5

    8806d043a732233b3f67303b04a9d6ae

  • SHA1

    cf20cbe1b3faf096b37803b6cfd7879804a4223c

  • SHA256

    0f69e45987ceaa32367537a7d745cde7cacdee5385e157d19a4799dde8dbf5ac

  • SHA512

    fce92071fe63c7499e7bb37fd97bff491ff51140e89ea4da6541afc372359947ab2568c868f06f9cb3138c120d123b71d0811da3c8f074b301f3851d7462051d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.atulvideo.com
  • Port:
    587
  • Username:
    davincii@atulvideo.com
  • Password:
    WR@Q]rUZ-eQ#

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Drops file in Drivers directory 1 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\davincii.exe
    "C:\Users\Admin\AppData\Local\Temp\davincii.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:64
    • C:\Users\Admin\AppData\Local\Temp\davincii.exe
      "C:\Users\Admin\AppData\Local\Temp\davincii.exe"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1156
    • C:\Users\Admin\AppData\Local\Temp\davincii.exe
      "C:\Users\Admin\AppData\Local\Temp\davincii.exe"
      2⤵
        PID:196
      • C:\Users\Admin\AppData\Local\Temp\davincii.exe
        "C:\Users\Admin\AppData\Local\Temp\davincii.exe"
        2⤵
          PID:1616
        • C:\Users\Admin\AppData\Local\Temp\davincii.exe
          "C:\Users\Admin\AppData\Local\Temp\davincii.exe"
          2⤵
            PID:2292
          • C:\Users\Admin\AppData\Local\Temp\davincii.exe
            "C:\Users\Admin\AppData\Local\Temp\davincii.exe"
            2⤵
              PID:1080

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Defense Evasion

          Modify Registry

          1
          T1112

          Credential Access

          Credentials in Files

          3
          T1081

          Collection

          Data from Local System

          3
          T1005

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/64-3-0x0000000000900000-0x0000000000901000-memory.dmp
            Filesize

            4KB

          • memory/64-5-0x0000000005860000-0x0000000005861000-memory.dmp
            Filesize

            4KB

          • memory/64-6-0x0000000005360000-0x0000000005361000-memory.dmp
            Filesize

            4KB

          • memory/64-7-0x0000000002D00000-0x0000000002D01000-memory.dmp
            Filesize

            4KB

          • memory/64-8-0x00000000054A0000-0x00000000054A1000-memory.dmp
            Filesize

            4KB

          • memory/64-9-0x00000000055E0000-0x00000000055E1000-memory.dmp
            Filesize

            4KB

          • memory/64-10-0x0000000006360000-0x00000000063BE000-memory.dmp
            Filesize

            376KB

          • memory/64-31-0x0000000005580000-0x0000000005581000-memory.dmp
            Filesize

            4KB

          • memory/64-2-0x0000000073160000-0x000000007384E000-memory.dmp
            Filesize

            6.9MB

          • memory/196-15-0x000000000043770E-mapping.dmp
          • memory/1080-30-0x000000000043770E-mapping.dmp
          • memory/1156-14-0x0000000073160000-0x000000007384E000-memory.dmp
            Filesize

            6.9MB

          • memory/1156-12-0x000000000043770E-mapping.dmp
          • memory/1156-32-0x0000000004F10000-0x0000000004F11000-memory.dmp
            Filesize

            4KB

          • memory/1156-11-0x0000000000400000-0x000000000043C000-memory.dmp
            Filesize

            240KB

          • memory/1156-33-0x0000000004FA0000-0x0000000004FA1000-memory.dmp
            Filesize

            4KB

          • memory/1156-34-0x0000000005B40000-0x0000000005B41000-memory.dmp
            Filesize

            4KB

          • memory/1156-37-0x0000000004F11000-0x0000000004F12000-memory.dmp
            Filesize

            4KB

          • memory/1616-19-0x000000000043770E-mapping.dmp
          • memory/1616-21-0x0000000073160000-0x000000007384E000-memory.dmp
            Filesize

            6.9MB

          • memory/2292-25-0x000000000043770E-mapping.dmp
          • memory/2292-26-0x0000000073160000-0x000000007384E000-memory.dmp
            Filesize

            6.9MB