Analysis

  • max time kernel
    150s
  • max time network
    190s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:56

General

  • Target

    PAYMENT_.exe

  • Size

    467KB

  • MD5

    d2a853f4673bcc9b9b2d17989cb3ba53

  • SHA1

    cee8b196927b10efef3d4efd36a0570f861a0ee0

  • SHA256

    c340fad2083b06131ba9375a8a9a90a71a7b5d9d6153a4c50ab4df210709af7e

  • SHA512

    86bc93532b0ce626548d928b7fd0643e6a428243abf5398528a375302592753ecaeb3c2ed2e01180a79dc2180bc35b5903a02a994211241849b2da3fb888be62

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.orientalkuwait.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Operatingmanager1&

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.orientalkuwait.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Operatingmanager1&

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • CoreCCC Packer 1 IoCs

    Detects CoreCCC packer used to load .NET malware.

  • 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 WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PAYMENT_.exe
    "C:\Users\Admin\AppData\Local\Temp\PAYMENT_.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1164
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fKYLva" /XML "C:\Users\Admin\AppData\Local\Temp\tmp928B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4640
    • C:\Users\Admin\AppData\Local\Temp\PAYMENT_.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1076
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:4136

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp928B.tmp

      Filesize

      1KB

      MD5

      3df8b11726c13950652667f649380840

      SHA1

      41eae28998a5a0165c37d6af81e37e02eb1c71de

      SHA256

      bd4f9e48acab4df2362ad3e757d5a9f02aadcdca4cf0985ce6545d58684665d8

      SHA512

      0167bbc78d56572b207c3b4f24000d4fdf3689c92a531cea47d076e4f83d4873d47e4eacca958e963ffdaae544a2cb476b4cab23936fdba44ed696bee0fd19df

    • memory/1076-137-0x0000000000000000-mapping.dmp

    • memory/1076-138-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/1076-139-0x0000000005C20000-0x0000000005C86000-memory.dmp

      Filesize

      408KB

    • memory/1076-140-0x0000000006700000-0x0000000006750000-memory.dmp

      Filesize

      320KB

    • memory/1164-130-0x0000000000CA0000-0x0000000000D1C000-memory.dmp

      Filesize

      496KB

    • memory/1164-131-0x0000000005D80000-0x0000000006324000-memory.dmp

      Filesize

      5.6MB

    • memory/1164-132-0x00000000056E0000-0x0000000005772000-memory.dmp

      Filesize

      584KB

    • memory/1164-133-0x00000000058F0000-0x00000000058FA000-memory.dmp

      Filesize

      40KB

    • memory/1164-134-0x0000000009430000-0x00000000094CC000-memory.dmp

      Filesize

      624KB

    • memory/4136-141-0x0000000000000000-mapping.dmp

    • memory/4640-135-0x0000000000000000-mapping.dmp