Analysis

  • max time kernel
    140s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:51

General

  • Target

    PO#2207020 p2.exe

  • Size

    472KB

  • MD5

    3f3ffffb3df0dd6d10b540fd78f87e18

  • SHA1

    d1d384f586d649e82dab478b935c68c111ed3115

  • SHA256

    8b54843b4acb823d224d090a1c2246860d643318959d95fa342b588fcba6a0c4

  • SHA512

    6bab494acd0a74152a276533881a2141ef51794530b9451f27e123a9d8fc9e9bd4f624af8a61035839246daa5ca4fe30acdd9183c71875b9275c72f98b9122b5

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.aylaalgan.com.tr
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    20162016

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.aylaalgan.com.tr
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    20162016

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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 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\PO#2207020 p2.exe
    "C:\Users\Admin\AppData\Local\Temp\PO#2207020 p2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1588
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NZJKcTZO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC1C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1992
    • C:\Users\Admin\AppData\Local\Temp\PO#2207020 p2.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:2276

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\PO#2207020 p2.exe.log

    Filesize

    408B

    MD5

    04ad5d645afd4aad8257d37d2b197bd9

    SHA1

    f27458933c22a18ed06c3ef023d9356bae6f5e89

    SHA256

    519a7b0a515b09c8d149c48a26e782e13decd80c2a2957a751f58801bed026d0

    SHA512

    34097f7ec87c917ebb2f38a156a33ff1b5f8570141acd666a1fce2cd5d40e464762a3a596a44f078318f92823a7d7b961751c4399040a09e5eddb941f22c4754

  • C:\Users\Admin\AppData\Local\Temp\tmpBC1C.tmp

    Filesize

    1KB

    MD5

    09f38b9bc6b3ded8f4d833d41efd937a

    SHA1

    f4da857f279e691fab05704ea4d2ac70ad9def01

    SHA256

    60345045bd1517f691e6c099d80df80b546047085edfe6761fd172a522acb6be

    SHA512

    1adad4833199f05852c079c4f47142333ea5c699fd125f6e358a1f8cea713fc14969f6b35d1469d1c85d7496e7b0756b3dd85eadd34e81b7d42e6e8fa3ef7f58

  • memory/1588-130-0x0000000075080000-0x0000000075631000-memory.dmp

    Filesize

    5.7MB

  • memory/1992-131-0x0000000000000000-mapping.dmp

  • memory/2276-133-0x0000000000000000-mapping.dmp

  • memory/2276-134-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/2276-136-0x0000000075080000-0x0000000075631000-memory.dmp

    Filesize

    5.7MB