Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:16

General

  • Target

    Resume For a Job.exe

  • Size

    493KB

  • MD5

    ab25cea9f47198353f10b89bea4736e3

  • SHA1

    05b91a17ff73cdd1f27afeab94c14c26eafb777a

  • SHA256

    7965e56d288f6cdd4ae1c7f260dd5ddb1e6fb1c1485ff3d78f50fc1cbcb0b7ee

  • SHA512

    fc30f65820ccac91918c528e0ffa3299835c431569e2070ca8dda13c9e789e52dfe5b5cce39f043f7967d1b598a2bf9f48ad124a83a65ef77562bb39fc00f6ac

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.bnb-spa.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    tPo!47:glt$E

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Resume For a Job.exe
    "C:\Users\Admin\AppData\Local\Temp\Resume For a Job.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PKqhPOQJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp50CF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:204
    • C:\Users\Admin\AppData\Local\Temp\Resume For a Job.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4264

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp50CF.tmp

    Filesize

    1KB

    MD5

    e54b24a1f850baa78ede711b66e12026

    SHA1

    0626efbedb7773872bb8496eecd34d90212a2475

    SHA256

    e67a5f77d4946c5dea45910711bf1d38c0d3f5b97cab079cf280ae6ccbb355b1

    SHA512

    0c8b0926da5627b9d298dc69fbe4e75c74c828113c7a9fcd0fd10c7437ea2c835a9354c06b2fff109e538b3f1ecca5bb1aefaf1903839e5125a37c5b7207bef5

  • memory/204-131-0x0000000000000000-mapping.dmp

  • memory/2156-130-0x0000000074AF0000-0x00000000750A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4264-133-0x0000000000000000-mapping.dmp

  • memory/4264-134-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/4264-135-0x0000000074AF0000-0x00000000750A1000-memory.dmp

    Filesize

    5.7MB