Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231130-en
  • resource tags

    arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2023 12:28

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:2208
    • 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:2932

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2208-1-0x0000000074BF0000-0x00000000752DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2208-0-0x0000000000120000-0x00000000001F0000-memory.dmp

    Filesize

    832KB

  • memory/2208-2-0x0000000004C00000-0x0000000004C40000-memory.dmp

    Filesize

    256KB

  • memory/2208-3-0x0000000000700000-0x0000000000718000-memory.dmp

    Filesize

    96KB

  • memory/2208-4-0x00000000006B0000-0x00000000006B8000-memory.dmp

    Filesize

    32KB

  • memory/2208-5-0x0000000000720000-0x000000000072A000-memory.dmp

    Filesize

    40KB

  • memory/2208-6-0x00000000051E0000-0x000000000525C000-memory.dmp

    Filesize

    496KB

  • memory/2208-19-0x0000000074BF0000-0x00000000752DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2932-8-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2932-9-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2932-10-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2932-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2932-14-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2932-16-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2932-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2932-7-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2932-20-0x0000000074BF0000-0x00000000752DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2932-21-0x00000000042B0000-0x00000000042F0000-memory.dmp

    Filesize

    256KB

  • memory/2932-22-0x0000000074BF0000-0x00000000752DE000-memory.dmp

    Filesize

    6.9MB