Analysis

  • max time kernel
    117s
  • max time network
    141s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    30-06-2020 06:46

General

  • Target

    200004396.exe

  • Size

    399KB

  • MD5

    7e90e5f5106e876f9f080b224cbc069d

  • SHA1

    8e52b1163bcc86538aa8beb66166cba9c1ee426c

  • SHA256

    7ac2dee76520e25a21918a6ee79eedaf1a9de51aaee643d21d9cf6346451555e

  • SHA512

    4f60c309c6abb4757b68261736a4ab0eb14252316ee673e872080c323a89be6761139b0e95fdafdc8eb05e14a99aa74d21c735a35182f808fcb76f3eb12f2d0f

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    f.grac3@yandex.ru
  • Password:
    HYBRID@@@

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 use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\200004396.exe
    "C:\Users\Admin\AppData\Local\Temp\200004396.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OegXSQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA07C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2520
    • C:\Users\Admin\AppData\Local\Temp\200004396.exe
      "{path}"
      2⤵
        PID:3960
      • C:\Users\Admin\AppData\Local\Temp\200004396.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4028

    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_v2.0_32\UsageLogs\200004396.exe.log
      MD5

      3753b01eddc20f64178eaf3d55b5c146

      SHA1

      ca50665940eb8519e1df0c1f185fb72a271c2a66

      SHA256

      99096651b1d9b4a7562f56c8e42c06d1166f7f22a93816e2862317ada8154b37

      SHA512

      566366e651e94fab25454fb0199508cd62a64723137b32fbd5bee531110403d9194b9a4fc053740c571a69e820c1c72e48d65fc3a5410a22b6ae9d2e55508bf3

    • C:\Users\Admin\AppData\Local\Temp\tmpA07C.tmp
      MD5

      3c130dfaf8176d72dc8eb4347dd342a2

      SHA1

      d1af8845a500ec2f4cb35ee9a3bd14b020d5c2b6

      SHA256

      d44742aec91b9aca5ef4c560188e5a569dfba1268a33cc5bf6c9e57fac855156

      SHA512

      d1415c1126586d7d66091d3cb9baa3b54e20d899b620b473029423fdaf64fbbe9b6123bcd22ad23cb1077ac06f4d28b69a5d9543348754c380e4ba216aa3e530

    • memory/2520-0-0x0000000000000000-mapping.dmp
    • memory/4028-2-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/4028-3-0x0000000000446A4E-mapping.dmp