Analysis

  • max time kernel
    126s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    16-04-2021 19:11

General

  • Target

    Payment Advice.pdf..exe

  • Size

    866KB

  • MD5

    4a3d5a4a2dc407cebfc5931be709064d

  • SHA1

    4af07e40fbf839e188206ecc31c8e21148abcd67

  • SHA256

    165064cd4b06721491a3d57b5e111faddb9cf6ff0b448b4d5387bb1eb8bb62f2

  • SHA512

    2748cd53a6d79c4ac7eff49cbf0e0f4a585a23bb5c4c55159cf22c9dc080117d9e38c88ca69644c32d062fa802c60a3eb9e109cbae06b869895dd1d6fbca26b2

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.lallyautomobiles.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Welcome@2021

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Drops file in Drivers directory 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 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\Payment Advice.pdf..exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Advice.pdf..exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1808
    • C:\Users\Admin\AppData\Local\Temp\Payment Advice.pdf..exe
      "{path}"
      2⤵
        PID:3948
      • C:\Users\Admin\AppData\Local\Temp\Payment Advice.pdf..exe
        "{path}"
        2⤵
        • Drops file in Drivers directory
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3968

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      MD5

      0c2899d7c6746f42d5bbe088c777f94c

      SHA1

      622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

      SHA256

      5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

      SHA512

      ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

    • memory/1808-121-0x00000000055F0000-0x00000000055F5000-memory.dmp

      Filesize

      20KB

    • memory/1808-123-0x000000000ADD0000-0x000000000AE37000-memory.dmp

      Filesize

      412KB

    • memory/1808-118-0x00000000053A0000-0x00000000053A1000-memory.dmp

      Filesize

      4KB

    • memory/1808-119-0x0000000007290000-0x0000000007291000-memory.dmp

      Filesize

      4KB

    • memory/1808-120-0x0000000005180000-0x0000000005212000-memory.dmp

      Filesize

      584KB

    • memory/1808-114-0x0000000000920000-0x0000000000921000-memory.dmp

      Filesize

      4KB

    • memory/1808-122-0x00000000088F0000-0x0000000008999000-memory.dmp

      Filesize

      676KB

    • memory/1808-117-0x00000000052C0000-0x00000000052C1000-memory.dmp

      Filesize

      4KB

    • memory/1808-116-0x00000000057C0000-0x00000000057C1000-memory.dmp

      Filesize

      4KB

    • memory/3968-125-0x000000000043762E-mapping.dmp

    • memory/3968-124-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/3968-131-0x0000000005640000-0x0000000005641000-memory.dmp

      Filesize

      4KB

    • memory/3968-132-0x0000000005BB0000-0x0000000005BB1000-memory.dmp

      Filesize

      4KB

    • memory/3968-133-0x0000000006360000-0x0000000006361000-memory.dmp

      Filesize

      4KB