Analysis

  • max time kernel
    145s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 14:43

General

  • Target

    0291bdd5b73f076ae911084b41f30e87808ef4416803610d21d216a6ea9b530b.exe

  • Size

    510KB

  • MD5

    d6b36e841c63c13adad7bf5cb9a45e8a

  • SHA1

    b7e7ba661d32657294cd1b61011c1587b3155298

  • SHA256

    0291bdd5b73f076ae911084b41f30e87808ef4416803610d21d216a6ea9b530b

  • SHA512

    8c58057790ffe9c076c5dac6365c328fa419cceccd6d09ef4224b6466d4d8757a099115c644c61862cf69c2774e2b80909e54d5f6e6f6f59e463258a0e60aa34

  • SSDEEP

    6144:IIw3XI7yWEnFVonnnxRYciyXRhHd3fwi5Qxe+1nnbn9KVOWyH+tsucEvSYXAygkg:4IbHDHFwiL88A+tsyr0kqDYBPZDi6a

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Loads dropped DLL 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0291bdd5b73f076ae911084b41f30e87808ef4416803610d21d216a6ea9b530b.exe
    "C:\Users\Admin\AppData\Local\Temp\0291bdd5b73f076ae911084b41f30e87808ef4416803610d21d216a6ea9b530b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3168
    • C:\Users\Admin\AppData\Local\Temp\0291bdd5b73f076ae911084b41f30e87808ef4416803610d21d216a6ea9b530b.exe
      "C:\Users\Admin\AppData\Local\Temp\0291bdd5b73f076ae911084b41f30e87808ef4416803610d21d216a6ea9b530b.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsj451A.tmp\System.dll

    Filesize

    11KB

    MD5

    9625d5b1754bc4ff29281d415d27a0fd

    SHA1

    80e85afc5cccd4c0a3775edbb90595a1a59f5ce0

    SHA256

    c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448

    SHA512

    dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b

  • memory/444-31-0x00000000718CE000-0x00000000718CF000-memory.dmp

    Filesize

    4KB

  • memory/444-33-0x0000000039710000-0x0000000039CB4000-memory.dmp

    Filesize

    5.6MB

  • memory/444-12-0x0000000077388000-0x0000000077389000-memory.dmp

    Filesize

    4KB

  • memory/444-14-0x00000000773A5000-0x00000000773A6000-memory.dmp

    Filesize

    4KB

  • memory/444-13-0x0000000000480000-0x00000000016D4000-memory.dmp

    Filesize

    18.3MB

  • memory/444-30-0x0000000077301000-0x0000000077421000-memory.dmp

    Filesize

    1.1MB

  • memory/444-29-0x0000000000480000-0x00000000016D4000-memory.dmp

    Filesize

    18.3MB

  • memory/444-42-0x00000000718C0000-0x0000000072070000-memory.dmp

    Filesize

    7.7MB

  • memory/444-41-0x00000000718CE000-0x00000000718CF000-memory.dmp

    Filesize

    4KB

  • memory/444-34-0x0000000039DC0000-0x0000000039E26000-memory.dmp

    Filesize

    408KB

  • memory/444-32-0x0000000000480000-0x00000000004C2000-memory.dmp

    Filesize

    264KB

  • memory/444-35-0x00000000718C0000-0x0000000072070000-memory.dmp

    Filesize

    7.7MB

  • memory/444-36-0x000000003A490000-0x000000003A4E0000-memory.dmp

    Filesize

    320KB

  • memory/444-37-0x000000003A4E0000-0x000000003A572000-memory.dmp

    Filesize

    584KB

  • memory/444-38-0x000000003A740000-0x000000003A74A000-memory.dmp

    Filesize

    40KB

  • memory/3168-11-0x0000000010004000-0x0000000010005000-memory.dmp

    Filesize

    4KB

  • memory/3168-10-0x0000000077301000-0x0000000077421000-memory.dmp

    Filesize

    1.1MB