Analysis

  • max time kernel
    152s
  • max time network
    214s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/11/2022, 12:49

General

  • Target
    SecuriteInfo.com.Win32.CrypterX-gen.23740.23288.exe
  • Size 921KB
  • Sample221129-p2cxtaaf33
  • SHA256 36143d6674053884d6bf2ce1e5bc8dd6f31b9d6b4d2fae272e37ac5649d00520
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot5083863399:AAH9g72QTdN88jNOd6_tBrE8gEd-FpXnfHE/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla payload 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 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.23740.23288.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.23740.23288.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4144
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.23740.23288.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.23740.23288.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4952

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        SecuriteInfo.com.Win32.CrypterX-gen.23740.23288.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SecuriteInfo.com.Win32.CrypterX-gen.23740.23288.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512

        memory/4144-132-0x00000000003E0000-0x00000000004CC000-memory.dmp

        memory/4144-133-0x00000000054E0000-0x0000000005A84000-memory.dmp

        memory/4144-134-0x0000000004E50000-0x0000000004EE2000-memory.dmp

        memory/4144-135-0x0000000004EF0000-0x0000000004EFA000-memory.dmp

        memory/4144-136-0x0000000007A90000-0x0000000007B2C000-memory.dmp

        memory/4952-138-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/4952-140-0x0000000006170000-0x00000000061D6000-memory.dmp

        memory/4952-141-0x00000000066F0000-0x0000000006740000-memory.dmp