Analysis

  • max time kernel
    143s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:14

General

  • Target

    ORDERlist85398pdf.exe

  • Size

    522KB

  • MD5

    7ad886548166e2b8367171f5f9d22822

  • SHA1

    481bac80866886055838cb358528fe0971b1ac3d

  • SHA256

    b7482c61434635d571649f327745f55945828178069d73bf9d1bb9298e8de89c

  • SHA512

    bc8a37eb67bc8e9ba3c661e757980a3b1aceb204dcd72fc37fe8e309c7893d4f04b5aa695f6378a0628a3ce6f59d3faef3352ce436d343a056722b3b72657ecf

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    secure231.servconfig.com
  • Port:
    587
  • Username:
    info@eltaef.com
  • Password:
    eltaefSH6548883

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
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ORDERlist85398pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\ORDERlist85398pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3388
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YotmjbfFRcHWsb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8D22.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4612
    • C:\Users\Admin\AppData\Local\Temp\ORDERlist85398pdf.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:5108
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:3424

    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

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp8D22.tmp
      Filesize

      1KB

      MD5

      de7bd4f69614127d605e455a36f2940e

      SHA1

      821dc8075de960d6062817e4d7af2f7b932b4e8f

      SHA256

      ac336b4a38c7fc4dbc1d0704829b6f811937987e4cdf536c49cdde90fd26dee6

      SHA512

      100f0ea8a9bb6022edbde68e2d0728e258326d71998dceca3f1c9524e3bded8ebcdf2aa2738dcb2d8eacbdcf5653303431d172ba82c0d9c77aed502df6373a2c

    • memory/3388-130-0x0000000000AC0000-0x0000000000B48000-memory.dmp
      Filesize

      544KB

    • memory/3388-131-0x0000000007F30000-0x00000000084D4000-memory.dmp
      Filesize

      5.6MB

    • memory/3388-132-0x0000000007A20000-0x0000000007AB2000-memory.dmp
      Filesize

      584KB

    • memory/3388-133-0x00000000079C0000-0x00000000079CA000-memory.dmp
      Filesize

      40KB

    • memory/3388-134-0x000000000B4B0000-0x000000000B54C000-memory.dmp
      Filesize

      624KB

    • memory/3424-141-0x0000000000000000-mapping.dmp
    • memory/4612-135-0x0000000000000000-mapping.dmp
    • memory/5108-137-0x0000000000000000-mapping.dmp
    • memory/5108-138-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/5108-139-0x0000000005FC0000-0x0000000006026000-memory.dmp
      Filesize

      408KB

    • memory/5108-140-0x0000000006A10000-0x0000000006A60000-memory.dmp
      Filesize

      320KB