Analysis

  • max time kernel
    115s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2024 02:32

General

  • Target

    b089fa2bc45c847783b8eb957d9d1023f707a96073f2657d6a838eaf5619949b.exe

  • Size

    618KB

  • MD5

    adc47f20cba61f1a2f8171791a455d09

  • SHA1

    62508fbdde7bfb78e927495bb96d78ceb832a1ae

  • SHA256

    b089fa2bc45c847783b8eb957d9d1023f707a96073f2657d6a838eaf5619949b

  • SHA512

    49ee25101729fe1d351d6b96861be96c0fe273ecc3c3378fc42848ef1d46f6e6128982b695de7a8639b1529791c541f4ad2077c93c11155dc0d5ebbe63e8414c

  • SSDEEP

    12288:4JMa5WyV/cXi7Cc8oZJfLyXrCt9vFjMRL9fPzDYUE8P8ITjEQ:4OS/kJoMIFCRhfgq8+j7

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.y-pt.com
  • Port:
    587
  • Username:
    maxwell@y-pt.com
  • Password:
    LILKOOLL14!

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.y-pt.com
  • Port:
    587
  • Username:
    maxwell@y-pt.com
  • Password:
    LILKOOLL14!
  • Email To:
    richibigi6@gmail.com

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
  • Detects executables packed with SmartAssembly 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b089fa2bc45c847783b8eb957d9d1023f707a96073f2657d6a838eaf5619949b.exe
    "C:\Users\Admin\AppData\Local\Temp\b089fa2bc45c847783b8eb957d9d1023f707a96073f2657d6a838eaf5619949b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Local\Temp\b089fa2bc45c847783b8eb957d9d1023f707a96073f2657d6a838eaf5619949b.exe
      "C:\Users\Admin\AppData\Local\Temp\b089fa2bc45c847783b8eb957d9d1023f707a96073f2657d6a838eaf5619949b.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3160
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4080 --field-trial-handle=2228,i,521073434451423547,2311651514500527526,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4868

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Credential Access

    Unsecured Credentials

    4
    T1552

    Credentials In Files

    3
    T1552.001

    Credentials in Registry

    1
    T1552.002

    Collection

    Data from Local System

    4
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b089fa2bc45c847783b8eb957d9d1023f707a96073f2657d6a838eaf5619949b.exe.log
      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • memory/2932-8-0x0000000005F90000-0x0000000006014000-memory.dmp
      Filesize

      528KB

    • memory/2932-3-0x0000000005260000-0x00000000052F2000-memory.dmp
      Filesize

      584KB

    • memory/2932-9-0x0000000008540000-0x00000000085DC000-memory.dmp
      Filesize

      624KB

    • memory/2932-0-0x00000000753A0000-0x0000000075B50000-memory.dmp
      Filesize

      7.7MB

    • memory/2932-5-0x0000000005300000-0x000000000530A000-memory.dmp
      Filesize

      40KB

    • memory/2932-6-0x0000000005250000-0x0000000005262000-memory.dmp
      Filesize

      72KB

    • memory/2932-7-0x0000000005310000-0x000000000531C000-memory.dmp
      Filesize

      48KB

    • memory/2932-1-0x00000000007D0000-0x0000000000870000-memory.dmp
      Filesize

      640KB

    • memory/2932-15-0x00000000753A0000-0x0000000075B50000-memory.dmp
      Filesize

      7.7MB

    • memory/2932-2-0x00000000058E0000-0x0000000005E84000-memory.dmp
      Filesize

      5.6MB

    • memory/2932-4-0x0000000005430000-0x0000000005440000-memory.dmp
      Filesize

      64KB

    • memory/3160-13-0x00000000753A0000-0x0000000075B50000-memory.dmp
      Filesize

      7.7MB

    • memory/3160-14-0x0000000002AF0000-0x0000000002B00000-memory.dmp
      Filesize

      64KB

    • memory/3160-19-0x0000000002AF0000-0x0000000002B00000-memory.dmp
      Filesize

      64KB

    • memory/3160-16-0x00000000053D0000-0x0000000005436000-memory.dmp
      Filesize

      408KB

    • memory/3160-17-0x0000000006900000-0x0000000006950000-memory.dmp
      Filesize

      320KB

    • memory/3160-18-0x00000000753A0000-0x0000000075B50000-memory.dmp
      Filesize

      7.7MB

    • memory/3160-10-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB