Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 01:16

General

  • Target

    527d855013361c51f69a24bdc87218d9a74965cb07fbd5ae778625b1d5fb5872.exe

  • Size

    1.1MB

  • MD5

    cdb9b4f4ed7d8dccb32ce06504e602ac

  • SHA1

    2457d885e21e903b9429b83269e7a0256556a835

  • SHA256

    527d855013361c51f69a24bdc87218d9a74965cb07fbd5ae778625b1d5fb5872

  • SHA512

    1a2c2c81197563b0ecf6f98517ba255262f37d53eebde1ef98acda7e1da1bcd1ba1bd7560a75a27e0cfb8bf51ada31bc1c939a93df3d45bdcd0c3ee9070f92ff

  • SSDEEP

    24576:7ZDbNjDaC9cAUzgNnDVU6dQ9Xcdrx3jtW:7HjDZWAnhU6dzda

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.medicalhome.com.pe
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    MHinfo01

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\527d855013361c51f69a24bdc87218d9a74965cb07fbd5ae778625b1d5fb5872.exe
    "C:\Users\Admin\AppData\Local\Temp\527d855013361c51f69a24bdc87218d9a74965cb07fbd5ae778625b1d5fb5872.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4464
    • C:\Users\Admin\AppData\Local\Temp\527d855013361c51f69a24bdc87218d9a74965cb07fbd5ae778625b1d5fb5872.exe
      "C:\Users\Admin\AppData\Local\Temp\527d855013361c51f69a24bdc87218d9a74965cb07fbd5ae778625b1d5fb5872.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\527d855013361c51f69a24bdc87218d9a74965cb07fbd5ae778625b1d5fb5872.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/2068-10-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/2068-20-0x00000000744A0000-0x0000000074C50000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-19-0x00000000065E0000-0x0000000006630000-memory.dmp

    Filesize

    320KB

  • memory/2068-16-0x00000000050E0000-0x0000000005146000-memory.dmp

    Filesize

    408KB

  • memory/2068-15-0x00000000744A0000-0x0000000074C50000-memory.dmp

    Filesize

    7.7MB

  • memory/2068-13-0x00000000744A0000-0x0000000074C50000-memory.dmp

    Filesize

    7.7MB

  • memory/4464-4-0x0000000005090000-0x000000000509A000-memory.dmp

    Filesize

    40KB

  • memory/4464-8-0x0000000006E90000-0x0000000006F48000-memory.dmp

    Filesize

    736KB

  • memory/4464-9-0x0000000009590000-0x000000000962C000-memory.dmp

    Filesize

    624KB

  • memory/4464-7-0x0000000005310000-0x0000000005320000-memory.dmp

    Filesize

    64KB

  • memory/4464-6-0x0000000005650000-0x000000000566A000-memory.dmp

    Filesize

    104KB

  • memory/4464-5-0x00000000744A0000-0x0000000074C50000-memory.dmp

    Filesize

    7.7MB

  • memory/4464-14-0x00000000744A0000-0x0000000074C50000-memory.dmp

    Filesize

    7.7MB

  • memory/4464-0-0x00000000744AE000-0x00000000744AF000-memory.dmp

    Filesize

    4KB

  • memory/4464-3-0x00000000050E0000-0x0000000005172000-memory.dmp

    Filesize

    584KB

  • memory/4464-2-0x0000000005690000-0x0000000005C34000-memory.dmp

    Filesize

    5.6MB

  • memory/4464-1-0x0000000000560000-0x0000000000682000-memory.dmp

    Filesize

    1.1MB