Analysis

  • max time kernel
    53s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    14-01-2021 02:23

General

  • Target

    sample2.bin.exe

  • Size

    594KB

  • MD5

    b0f2d519ccae5bf1435264e0979770ce

  • SHA1

    212da7b3ed9c89d83941f6bb0dba889fa24f8f6a

  • SHA256

    a4fdc26d6b70eaf0a62cca36286412901f48881eae616d38b96d8ae0cb0f29c7

  • SHA512

    a50b9d27abdf6195a2689ff911e11cbc6f71cbf69d1872c765a9fc92b3a2a8e2717e260c76d1c91576d59f6b105a27b1cccc6056251dc80a0dc8afecbff3507c

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    nwama@bulklogs.top
  • Password:
    pPCXThF2

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    nwama@bulklogs.top
  • Password:
    pPCXThF2

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sample2.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\sample2.bin.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:648
    • C:\Users\Admin\AppData\Local\Temp\sample2.bin.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3160
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:2736

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\sample2.bin.exe.log
      MD5

      ba91c4a69e9720e5fae902c41db57ebf

      SHA1

      aebe29335244f6a0b8d2e8aa42e2e0bf3a76286e

      SHA256

      d1adb28192182d7fb43b686df022fb3e257becd95075057695143307cbadbf8c

      SHA512

      15b04e7dd227db93bee19de65cc26b9ce412a1541b45ddf40dc087669e1f5bf64620166461ec3f800bcd99e281016c52868003e45e91be6aed76c551c9e058bc

    • memory/2736-5-0x0000000000000000-mapping.dmp
    • memory/3160-2-0x0000000000400000-0x0000000000450000-memory.dmp
      Filesize

      320KB

    • memory/3160-3-0x000000000044ABDE-mapping.dmp