Analysis

  • max time kernel
    129s
  • max time network
    22s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    07-07-2020 11:40

General

  • Target

    vbc(26).exe

  • Size

    557KB

  • MD5

    5172f944e8874206da2ddbc6959cacb7

  • SHA1

    22958bfde97aaab9e6c844d944104d9ce8140ebf

  • SHA256

    3f354781f665a6a9064df443b5f61f3c0db884d94f14e34fd957b0d7548fa7f0

  • SHA512

    25a2b1063f600e2e65d58f783b64f2ac11b6321da6e4c6f629d795d3443fbec136c973c8bb1871932c8fafa1feb4e16ac028c755c9deb685d5235fe026f5fa27

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    rijo@gleoman.com
  • Password:
    96965648

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\vbc(26).exe
    "C:\Users\Admin\AppData\Local\Temp\vbc(26).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:376
    • C:\Users\Admin\AppData\Local\Temp\vbc(26).exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1844

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/376-1-0x0000000000000000-0x0000000000000000-disk.dmp
  • memory/1844-2-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1844-3-0x000000000044707E-mapping.dmp
  • memory/1844-4-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1844-5-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB