Analysis

  • max time kernel
    91s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 03:17

General

  • Target

    0020027409011933_05-13-2020.exe

  • Size

    402KB

  • MD5

    fbc66dd14f31214c68d15659f71219bf

  • SHA1

    36301d647b8549e60564c34063a4a8a7b7bd1b76

  • SHA256

    3e2931cb793d52c5e3253abd7efa9c5c5da9fe766cc93a012ff784fe48694c7a

  • SHA512

    578e2bad1dc7a5775d4b13b34cb75d054d554de7f53aa8cecc2f85bff594abd43a63fc9d1e06ba90745f225b3a17bc7fe40e78c0e2c13de51dee7240aff5c0d3

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.elhelado.com.mx
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    4042Ad@+

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.elhelado.com.mx
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    4042Ad@+

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\0020027409011933_05-13-2020.exe
    "C:\Users\Admin\AppData\Local\Temp\0020027409011933_05-13-2020.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2432
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HyjXbggHLexDHw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA00D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4516
    • C:\Users\Admin\AppData\Local\Temp\0020027409011933_05-13-2020.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:2408
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:2152

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\0020027409011933_05-13-2020.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • C:\Users\Admin\AppData\Local\Temp\tmpA00D.tmp

      Filesize

      1KB

      MD5

      91da13f5648a76434b9786f979316e53

      SHA1

      6e9db8af2b5c57265a7bf68459181c697a22e745

      SHA256

      33302212d6c0d46994891ad479365561938c4c9f1c2d44c1de881bf77cc3cbd9

      SHA512

      b49b7559700f55cf6f2681c490a5b02a8165585a2e4dc8f5e05514bdac647bfef7e0b53a965b0f97bb3821e170d59153fe2e43333c99eae10a26b13d5a637eac

    • memory/2152-142-0x0000000000000000-mapping.dmp

    • memory/2408-138-0x0000000000000000-mapping.dmp

    • memory/2408-139-0x0000000000400000-0x0000000000450000-memory.dmp

      Filesize

      320KB

    • memory/2408-141-0x0000000005E70000-0x0000000005ED6000-memory.dmp

      Filesize

      408KB

    • memory/2408-143-0x0000000006CE0000-0x0000000006D30000-memory.dmp

      Filesize

      320KB

    • memory/2432-133-0x0000000005200000-0x0000000005292000-memory.dmp

      Filesize

      584KB

    • memory/2432-134-0x0000000005170000-0x000000000517A000-memory.dmp

      Filesize

      40KB

    • memory/2432-135-0x0000000008C70000-0x0000000008D0C000-memory.dmp

      Filesize

      624KB

    • memory/2432-131-0x00000000008A0000-0x000000000090A000-memory.dmp

      Filesize

      424KB

    • memory/2432-132-0x00000000057B0000-0x0000000005D54000-memory.dmp

      Filesize

      5.6MB

    • memory/4516-136-0x0000000000000000-mapping.dmp