Analysis

  • max time kernel
    151s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:16

General

  • Target

    4959696069969605pdf.exe

  • Size

    565KB

  • MD5

    3f6bc3fd4ea20b8bc31396374ab1829f

  • SHA1

    35fdfb9d4d1647efcf699a7e1e96e5cc754cc23b

  • SHA256

    d29da0500ff7aecab3d24397cb745554f399dce5ab59f4ed7a95f6f959b62584

  • SHA512

    5539e38f6ee9ed9c450cc6538d99201940007a4bd0c1f16fc0e4f49c64d0407d49d19690eb0f1beba157af01d46a131aa7a5f75fb763bf6c21c38c962d945db9

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    chukwudi123

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    chukwudi123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4959696069969605pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\4959696069969605pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2352
    • C:\Users\Admin\AppData\Local\Temp\4959696069969605pdf.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4536

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\4959696069969605pdf.exe.log

    Filesize

    667B

    MD5

    fad44290d2f569240416a287677a6b34

    SHA1

    0799266664e37852987cc24398f9a70c7e56742b

    SHA256

    e955c99499359471526e95c22a084d1578997c39ecab988badf6798cfbd995b0

    SHA512

    ee4136ac147d41646368eeb16390598c1da2b9e3bb8331b43062a72e4ad1d05eec56dcc727f9b5b447756c3edc855b08ef0c241073a5f88e749714f2beb98bc3

  • memory/2352-130-0x00000000749D0000-0x0000000074F81000-memory.dmp

    Filesize

    5.7MB

  • memory/4536-131-0x0000000000000000-mapping.dmp

  • memory/4536-132-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/4536-134-0x00000000749D0000-0x0000000074F81000-memory.dmp

    Filesize

    5.7MB