Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20231130-en
  • resource tags

    arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2023 17:38

General

  • Target

    91x238L9RRduvJF.exe

  • Size

    804KB

  • MD5

    49b446341decd153c56637ef759c0612

  • SHA1

    ce42d15a9ffd291c89a8810217b0f9ae7d6f85ce

  • SHA256

    d3842fcfe3df7efedf048a12e97555a857b59a43c26308a47aced12a1edcc428

  • SHA512

    6b4c90e5387b1e22f6dddd544fa36cfa39e8d3941a49640502ce01f085528270fe51b9a69e1f19f5ee21a1ca2073ce00a3c79904c6172659ede44613917debae

  • SSDEEP

    12288:WRbKE6jD/62iNG5nF8BmMzeFjdrpAtKbG4O7Xx/cKT53n11Yu8j4b:WNKtD/61IGmTlpAH4M9cKTpwu

Malware Config

Extracted

Family

agenttesla

C2

https://discord.com/api/webhooks/1179504720205856969/B43YV8FQQ3fdR-uW_OyGnX6VvnYrSqTFk2OymXDpd-oX57sjQwwu5bIRXdjpwwSOHyyt

Signatures

  • AgentTesla

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

  • 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.

  • 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 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91x238L9RRduvJF.exe
    "C:\Users\Admin\AppData\Local\Temp\91x238L9RRduvJF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\91x238L9RRduvJF.exe
      "C:\Users\Admin\AppData\Local\Temp\91x238L9RRduvJF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3044

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1740-0-0x0000000001240000-0x0000000001310000-memory.dmp

    Filesize

    832KB

  • memory/1740-1-0x0000000074D90000-0x000000007547E000-memory.dmp

    Filesize

    6.9MB

  • memory/1740-2-0x0000000004CD0000-0x0000000004D10000-memory.dmp

    Filesize

    256KB

  • memory/1740-3-0x00000000002B0000-0x00000000002C8000-memory.dmp

    Filesize

    96KB

  • memory/1740-4-0x00000000002E0000-0x00000000002E8000-memory.dmp

    Filesize

    32KB

  • memory/1740-5-0x00000000002F0000-0x00000000002FA000-memory.dmp

    Filesize

    40KB

  • memory/1740-6-0x0000000005320000-0x000000000539C000-memory.dmp

    Filesize

    496KB

  • memory/1740-20-0x0000000074D90000-0x000000007547E000-memory.dmp

    Filesize

    6.9MB

  • memory/3044-8-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3044-9-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3044-11-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3044-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3044-15-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3044-17-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3044-19-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3044-21-0x0000000074D90000-0x000000007547E000-memory.dmp

    Filesize

    6.9MB

  • memory/3044-7-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3044-22-0x00000000049E0000-0x0000000004A20000-memory.dmp

    Filesize

    256KB

  • memory/3044-23-0x0000000074D90000-0x000000007547E000-memory.dmp

    Filesize

    6.9MB