Analysis

  • max time kernel
    150s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:02

General

  • Target

    CL00485Q1902589CLSCTB.exe

  • Size

    512KB

  • MD5

    c608f248429afc058f2a9b0ba3a3e98f

  • SHA1

    46b3668dc85850542e96bab175a4c23d34d1155e

  • SHA256

    8d47f598292fe9256f28a9b23751612ba420e885d9cf09fb8d389fb2b53ea5ac

  • SHA512

    7770b281d9d6ef400d476cf78c95e6cc192b2842d7628354df25223e1d45056f60aa11ae22ea0766552eb75cc91c24b79330c8c70fb77b34e3cc83651443040a

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    amblessed22

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    amblessed22

Signatures

  • AgentTesla

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

  • SnakeBOT

    SnakeBOT is a heavily obfuscated .NET downloader.

  • AgentTesla Payload 1 IoCs
  • Contains SnakeBOT related strings 1 IoCs
  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CL00485Q1902589CLSCTB.exe
    "C:\Users\Admin\AppData\Local\Temp\CL00485Q1902589CLSCTB.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1120
    • C:\Users\Admin\AppData\Local\Temp\CL00485Q1902589CLSCTB.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:840
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:528

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\CL00485Q1902589CLSCTB.exe.log

      Filesize

      1KB

      MD5

      400f1cc1a0a0ce1cdabda365ab3368ce

      SHA1

      1ecf683f14271d84f3b6063493dce00ff5f42075

      SHA256

      c8fa64f4b69df13ed6408fd4a204f318a36c2f38c85d4a4d42adfc9173f73765

      SHA512

      14c8cfd58d097e5e89c8cabe1e665173f1ccf604a9ef70cdcb84116e265f90819c19c891be408e0ad7e29086a5c2ea2883b7a7d1184878dbbac63e2cabcd1c45

    • memory/528-140-0x0000000000000000-mapping.dmp

    • memory/840-135-0x0000000000000000-mapping.dmp

    • memory/840-136-0x0000000000400000-0x0000000000450000-memory.dmp

      Filesize

      320KB

    • memory/840-138-0x00000000063F0000-0x0000000006456000-memory.dmp

      Filesize

      408KB

    • memory/840-139-0x0000000006C00000-0x0000000006C50000-memory.dmp

      Filesize

      320KB

    • memory/1120-130-0x0000000000940000-0x00000000009CA000-memory.dmp

      Filesize

      552KB

    • memory/1120-131-0x0000000007DB0000-0x0000000008354000-memory.dmp

      Filesize

      5.6MB

    • memory/1120-132-0x00000000078A0000-0x0000000007932000-memory.dmp

      Filesize

      584KB

    • memory/1120-133-0x0000000007850000-0x000000000785A000-memory.dmp

      Filesize

      40KB

    • memory/1120-134-0x000000000AE30000-0x000000000AECC000-memory.dmp

      Filesize

      624KB