Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    13-07-2020 06:34

General

  • Target

    Payment doc747322.exe

  • Size

    491KB

  • MD5

    88087279864b6d4db153f6dd9c68f065

  • SHA1

    7e8a69d8aecc43d9449af37efb5fcdaee1cf4166

  • SHA256

    112fe86589f5587620a62be8ebeab2ee9898f770762f7be2b92a229c46d52917

  • SHA512

    7c9003242e32bbca7890e0393c370686e3a4011e98e6b3c77859d73d6b97ab89752c1da3c2909bee3ee72333117721f63ecdb856317ebde71cb8ed854c786dfd

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    killdemall007

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    killdemall007

Signatures

  • AgentTesla

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

  • AgentTesla Payload 17 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment doc747322.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment doc747322.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:792
    • C:\Users\Admin\AppData\Local\Temp\Payment doc747322.exe
      "{path}"
      2⤵
        PID:3868
      • C:\Users\Admin\AppData\Local\Temp\Payment doc747322.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3896
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
          dw20.exe -x -s 1876
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1172
    • C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
      C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
      1⤵
        PID:2296

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Payment doc747322.exe.log

        MD5

        3c257ea23fb2068f749387beb208d8c9

        SHA1

        f16d295344a455949f9cca28e32c8744893ae7b4

        SHA256

        6bb131942a2d77e16887bee2a5c2c291c8f96200ba6309746bdece6ebb047e65

        SHA512

        9e7ed3ca22caab77f372bd39801efe5ce9f1c63fcd3eb363bfedfa691472ef427a775a0d6ad70e6ce38290120a0a24ebcc39e08e5b9979f943eb8208498462ea

      • memory/1172-20-0x0000000002EB0000-0x0000000002EB1000-memory.dmp

        Filesize

        4KB

      • memory/1172-21-0x0000000002A10000-0x0000000002A11000-memory.dmp

        Filesize

        4KB

      • memory/1172-3-0x0000000000000000-mapping.dmp

      • memory/1172-4-0x00000000027A0000-0x00000000027A1000-memory.dmp

        Filesize

        4KB

      • memory/3896-10-0x000000000046861E-mapping.dmp

      • memory/3896-14-0x000000000046861E-mapping.dmp

      • memory/3896-7-0x000000000046861E-mapping.dmp

      • memory/3896-8-0x000000000046861E-mapping.dmp

      • memory/3896-9-0x000000000046861E-mapping.dmp

      • memory/3896-1-0x000000000046861E-mapping.dmp

      • memory/3896-11-0x000000000046861E-mapping.dmp

      • memory/3896-12-0x000000000046861E-mapping.dmp

      • memory/3896-13-0x000000000046861E-mapping.dmp

      • memory/3896-5-0x000000000046861E-mapping.dmp

      • memory/3896-15-0x000000000046861E-mapping.dmp

      • memory/3896-16-0x000000000046861E-mapping.dmp

      • memory/3896-17-0x000000000046861E-mapping.dmp

      • memory/3896-18-0x000000000046861E-mapping.dmp

      • memory/3896-19-0x000000000046861E-mapping.dmp

      • memory/3896-6-0x000000000046861E-mapping.dmp

      • memory/3896-0-0x0000000000400000-0x000000000046E000-memory.dmp

        Filesize

        440KB