Analysis

  • max time kernel
    141s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    14-04-2022 12:34

General

  • Target

    986efb76b3f07c81294445c6845cb2606a8defff65166ce9967753b43484a01a.exe

  • Size

    854KB

  • MD5

    f3a67d95d42e4418dd640758b5302ce5

  • SHA1

    29910d022b481416b95f3bd1437f332290956dff

  • SHA256

    986efb76b3f07c81294445c6845cb2606a8defff65166ce9967753b43484a01a

  • SHA512

    dcf03e5599c29c0f62fc72cfd9870bcc0c5d32cd1adfa280a86dc11fd2f3e35b44a13506f34b415ced1bb74b5f723ee0714bae4d43740e6102b58ad4b72ce581

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Prince11

Signatures

  • AgentTesla

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

  • Meta Stealer Stealer

    Meta Stealer steals passwords stored in browsers, written in C++.

  • 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 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\986efb76b3f07c81294445c6845cb2606a8defff65166ce9967753b43484a01a.exe
    "C:\Users\Admin\AppData\Local\Temp\986efb76b3f07c81294445c6845cb2606a8defff65166ce9967753b43484a01a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:892
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ANiDrL" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEFAD.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3992
    • C:\Users\Admin\AppData\Local\Temp\986efb76b3f07c81294445c6845cb2606a8defff65166ce9967753b43484a01a.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4632

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\986efb76b3f07c81294445c6845cb2606a8defff65166ce9967753b43484a01a.exe.log

    Filesize

    1KB

    MD5

    6f8f3a9a57cb30e686d3355e656031e0

    SHA1

    acccd6befb1a2f40e662280bc5182e086a0d079b

    SHA256

    283586e83b25099a5698cb9caf9c594a37060d11e0f55c81bb9c6d4f728448ea

    SHA512

    8f11d645ff4f8d5b1c45b06eb52cd45319659255306d60e80e33abfd04b9e3b1164679f11a8a23bd493e4b3f6b9841d70e553a01835eeaf6035b4d05e4fd7b54

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

    Filesize

    1KB

    MD5

    7fb0f5c76a46d492fd027c688680fd3a

    SHA1

    ab85ce81f63b051ff506a2214695ed90e4a61df7

    SHA256

    fab759f3d9b02d58be2f645bb530bde04c8f881c2d0b6620efa95f77f9e15d9f

    SHA512

    948e561448d29cc6f9d5e88fbcce9a507a07d9d9c35eb13227fa49e54d0fb8820f400585e9551e705068b68fdd01a8e463cb11ee825dd276591104dac1ad0a4d

  • memory/892-131-0x0000000005200000-0x00000000057A4000-memory.dmp

    Filesize

    5.6MB

  • memory/892-132-0x0000000004C50000-0x0000000004CE2000-memory.dmp

    Filesize

    584KB

  • memory/892-133-0x0000000004C10000-0x0000000004C1A000-memory.dmp

    Filesize

    40KB

  • memory/892-134-0x00000000088D0000-0x0000000008DFC000-memory.dmp

    Filesize

    5.2MB

  • memory/892-135-0x0000000009270000-0x000000000930C000-memory.dmp

    Filesize

    624KB

  • memory/892-130-0x0000000000190000-0x000000000026C000-memory.dmp

    Filesize

    880KB

  • memory/4632-139-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/4632-141-0x0000000006610000-0x0000000006676000-memory.dmp

    Filesize

    408KB

  • memory/4632-142-0x0000000006880000-0x00000000068D0000-memory.dmp

    Filesize

    320KB