Analysis

  • max time kernel
    126s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    26-02-2021 03:12

General

  • Target

    Additional documents required.exe

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://files.000webhost.com/
  • Port:
    21
  • Username:
    zinco
  • Password:
    computer147

Signatures

  • AgentTesla

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

  • AgentTesla 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Additional documents required.exe
    "C:\Users\Admin\AppData\Local\Temp\Additional documents required.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:412
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lHxDNGlOENUG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC375.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:732
    • C:\Users\Admin\AppData\Local\Temp\Additional documents required.exe
      "{path}"
      2⤵
        PID:1164
      • C:\Users\Admin\AppData\Local\Temp\Additional documents required.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        PID:1296

    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

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Additional documents required.exe.log
      MD5

      0c2899d7c6746f42d5bbe088c777f94c

      SHA1

      622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

      SHA256

      5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

      SHA512

      ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

    • C:\Users\Admin\AppData\Local\Temp\tmpC375.tmp
      MD5

      f059836708f2b09100a626d20440c3be

      SHA1

      11d7859f840560384305b22164a525893afd3d87

      SHA256

      f45c568a3162cf59a92b4a1fb0c64e47ee38ebfff8dc71b96821df607caa8018

      SHA512

      cbcfe2875f7bd20da60edaf8061fb831011a3b4464327550a700e24d63ff6b0eea820d5992924ca16bd6ccefc41469aa99d5e805802c8eb67e4cd90dd7733d23

    • memory/412-11-0x0000000008570000-0x00000000085F1000-memory.dmp
      Filesize

      516KB

    • memory/412-3-0x0000000000430000-0x0000000000431000-memory.dmp
      Filesize

      4KB

    • memory/412-7-0x0000000004E90000-0x0000000004E91000-memory.dmp
      Filesize

      4KB

    • memory/412-8-0x00000000050F0000-0x00000000050F1000-memory.dmp
      Filesize

      4KB

    • memory/412-9-0x00000000054B0000-0x00000000054BB000-memory.dmp
      Filesize

      44KB

    • memory/412-10-0x0000000006FF0000-0x0000000006FF1000-memory.dmp
      Filesize

      4KB

    • memory/412-2-0x0000000073920000-0x000000007400E000-memory.dmp
      Filesize

      6.9MB

    • memory/412-6-0x0000000004F10000-0x0000000004F11000-memory.dmp
      Filesize

      4KB

    • memory/412-5-0x00000000054E0000-0x00000000054E1000-memory.dmp
      Filesize

      4KB

    • memory/732-12-0x0000000000000000-mapping.dmp
    • memory/1296-15-0x00000000004375DE-mapping.dmp
    • memory/1296-14-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1296-17-0x0000000073920000-0x000000007400E000-memory.dmp
      Filesize

      6.9MB

    • memory/1296-22-0x0000000005050000-0x0000000005051000-memory.dmp
      Filesize

      4KB

    • memory/1296-23-0x00000000051F0000-0x00000000051F1000-memory.dmp
      Filesize

      4KB

    • memory/1296-24-0x0000000005D60000-0x0000000005D61000-memory.dmp
      Filesize

      4KB