Analysis

  • max time kernel
    129s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    20-10-2021 05:31

General

  • Target

    Invoice 204498.exe

  • Size

    476KB

  • MD5

    aa968f7bd982cc2c85f28a845c4ecb3f

  • SHA1

    8bfb6a0b7ada40a5a0585eed5686fc0a4a7601d8

  • SHA256

    79f55618c67e8e0d6210d594cd167a070b0e1b81abcc239d889b8edd3e3f85d6

  • SHA512

    15a4d8b0de611f5df5cb3311e358b327bd499bc6ed5c33bee7bbe32a7f1e5d5f395a36567238b15421008cd79815efcf1cc68c9382d9cab39be1bf575d766ada

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.karanex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    zarazita404

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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 behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 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\Invoice 204498.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice 204498.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Users\Admin\AppData\Local\Temp\Invoice 204498.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice 204498.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4068

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Invoice 204498.exe.log

    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/2168-122-0x000000000AE90000-0x000000000AE91000-memory.dmp

    Filesize

    4KB

  • memory/2168-118-0x00000000075F0000-0x00000000075F1000-memory.dmp

    Filesize

    4KB

  • memory/2168-119-0x0000000007550000-0x0000000007A4E000-memory.dmp

    Filesize

    5.0MB

  • memory/2168-120-0x0000000007590000-0x0000000007591000-memory.dmp

    Filesize

    4KB

  • memory/2168-121-0x00000000079D0000-0x00000000079D7000-memory.dmp

    Filesize

    28KB

  • memory/2168-115-0x0000000000810000-0x0000000000811000-memory.dmp

    Filesize

    4KB

  • memory/2168-123-0x000000000B030000-0x000000000B088000-memory.dmp

    Filesize

    352KB

  • memory/2168-117-0x0000000007A50000-0x0000000007A51000-memory.dmp

    Filesize

    4KB

  • memory/4068-124-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/4068-125-0x000000000043788E-mapping.dmp

  • memory/4068-131-0x00000000053B0000-0x00000000058AE000-memory.dmp

    Filesize

    5.0MB

  • memory/4068-132-0x0000000005840000-0x0000000005841000-memory.dmp

    Filesize

    4KB

  • memory/4068-133-0x0000000006110000-0x0000000006111000-memory.dmp

    Filesize

    4KB