Analysis

  • max time kernel
    155s
  • max time network
    177s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 11:39

General

  • Target

    m.exe

  • Size

    483KB

  • MD5

    28c050fb50ef0099f20bb70ff0a67da1

  • SHA1

    c445b687ffe5a725582da71502984ba7944ef148

  • SHA256

    41401278ff415b94769fc39e72450ae5f510f1097a90e650ac3ab417159b2925

  • SHA512

    a651c1d1765af1d69aed4aedf4d81bd0ccc4d77b38cdbe04629e1972c8e93751287b2eef6122fafb2bb644e919fb4a7e517d876311cd37edf2694f494f0675a6

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    arseno.murphy@yandex.com
  • Password:
    legend1234$$

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    arseno.murphy@yandex.com
  • Password:
    legend1234$$

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 3 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\m.exe
    "C:\Users\Admin\AppData\Local\Temp\m.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3672
    • C:\Users\Admin\AppData\Local\Temp\m.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:908

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

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Downloads

  • memory/908-137-0x0000000000000000-mapping.dmp
  • memory/908-138-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/908-139-0x0000000005F90000-0x0000000005FF6000-memory.dmp
    Filesize

    408KB

  • memory/908-140-0x00000000062F0000-0x0000000006340000-memory.dmp
    Filesize

    320KB

  • memory/3672-130-0x0000000000610000-0x0000000000690000-memory.dmp
    Filesize

    512KB

  • memory/3672-131-0x00000000054F0000-0x0000000005A94000-memory.dmp
    Filesize

    5.6MB

  • memory/3672-132-0x0000000005030000-0x00000000050C2000-memory.dmp
    Filesize

    584KB

  • memory/3672-133-0x00000000050E0000-0x00000000050EA000-memory.dmp
    Filesize

    40KB

  • memory/3672-134-0x0000000005160000-0x0000000005172000-memory.dmp
    Filesize

    72KB

  • memory/3672-135-0x00000000051C0000-0x00000000051E2000-memory.dmp
    Filesize

    136KB

  • memory/3672-136-0x0000000008BD0000-0x0000000008C6C000-memory.dmp
    Filesize

    624KB