Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:38

General

  • Target

    ff5d13d49200bed78996c65f2eecfae2638c9d8d0cace76ba2faf3403b518af9.exe

  • Size

    769KB

  • MD5

    e78508f102005950c6ecf3677a2689cd

  • SHA1

    f7967bdf537730e85356125b70c1d08cb7b80edc

  • SHA256

    ff5d13d49200bed78996c65f2eecfae2638c9d8d0cace76ba2faf3403b518af9

  • SHA512

    5678fb1d33c27ba3f31ec2b258b24dbf4bf6afdb36aa983aeda3bc5e9cd32c7672c275614bda5f548a9954570e37cb68f8431428a8590216bfd606801f8d0417

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.zasapparels.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    store55555

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.zasapparels.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    store55555

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 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\ff5d13d49200bed78996c65f2eecfae2638c9d8d0cace76ba2faf3403b518af9.exe
    "C:\Users\Admin\AppData\Local\Temp\ff5d13d49200bed78996c65f2eecfae2638c9d8d0cace76ba2faf3403b518af9.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YXeSIfxdFoEn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF8E7.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2444
    • C:\Users\Admin\AppData\Local\Temp\ff5d13d49200bed78996c65f2eecfae2638c9d8d0cace76ba2faf3403b518af9.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:2732

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF8E7.tmp
    Filesize

    1KB

    MD5

    e16c5581e1fc74d9836c1d2f3d38051a

    SHA1

    50e0d49e6422b3871de67e681a480bc59c386ba4

    SHA256

    06b702bd2eac8db916bcc2595c1dd4f97b3134a84becebdeeafed1747a590c06

    SHA512

    8da156590ff30f98748d0c0c64e836eac522fff1566905f60a06e4b7ef875e4e7c981a75967fa4cf0d4102e267a71072d44535f67e4a2e1fd2e417ec6e3b4dd8

  • memory/2156-130-0x0000000000160000-0x0000000000226000-memory.dmp
    Filesize

    792KB

  • memory/2156-131-0x00000000051D0000-0x0000000005774000-memory.dmp
    Filesize

    5.6MB

  • memory/2156-132-0x0000000004C20000-0x0000000004CB2000-memory.dmp
    Filesize

    584KB

  • memory/2156-133-0x0000000005910000-0x0000000005A96000-memory.dmp
    Filesize

    1.5MB

  • memory/2156-134-0x0000000005100000-0x000000000519C000-memory.dmp
    Filesize

    624KB

  • memory/2444-135-0x0000000000000000-mapping.dmp
  • memory/2732-137-0x0000000000000000-mapping.dmp
  • memory/2732-138-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2732-139-0x0000000006220000-0x0000000006286000-memory.dmp
    Filesize

    408KB

  • memory/2732-140-0x00000000068D0000-0x0000000006920000-memory.dmp
    Filesize

    320KB

  • memory/2732-141-0x0000000006B70000-0x0000000006B7A000-memory.dmp
    Filesize

    40KB