Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03-06-2024 09:13

General

  • Target

    JS ONSAN-VESSEL_DETAILS(1)(1).xlsx.scr

  • Size

    844KB

  • MD5

    d1473af035ad29a5106b6e0c86136c62

  • SHA1

    d8aa3f840097d53cb03d35020e1ec904aa779b6c

  • SHA256

    09e3dca360715fc66070377bbf9ac07c8af08b6f5bc11a8e9de381368b21a32d

  • SHA512

    ab1c50459147d77ab5359d1899d7107c698e712cc6e6cd6371236a4a59ad04d755c563e8d58e9ef3e92ebbb7b575da798af1c2e16becb6040e141d7503820ed9

  • SSDEEP

    24576:JMYeNVDN5i/7oYEADXg/7w6y5frNhSXiRIVqf:JMYePN5i/7vEWwjwNfrrSXwIVq

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://beirutrest.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    9yXQ39wz(uL+

Signatures

  • AgentTesla

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

  • 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.

  • 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 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\JS ONSAN-VESSEL_DETAILS(1)(1).xlsx.scr
    "C:\Users\Admin\AppData\Local\Temp\JS ONSAN-VESSEL_DETAILS(1)(1).xlsx.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2340
    • C:\Users\Admin\AppData\Local\Temp\JS ONSAN-VESSEL_DETAILS(1)(1).xlsx.scr
      "C:\Users\Admin\AppData\Local\Temp\JS ONSAN-VESSEL_DETAILS(1)(1).xlsx.scr"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2340-0-0x000000007419E000-0x000000007419F000-memory.dmp

    Filesize

    4KB

  • memory/2340-1-0x0000000000B80000-0x0000000000C58000-memory.dmp

    Filesize

    864KB

  • memory/2340-2-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2340-3-0x00000000003E0000-0x00000000003F6000-memory.dmp

    Filesize

    88KB

  • memory/2340-4-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/2340-5-0x0000000000450000-0x0000000000460000-memory.dmp

    Filesize

    64KB

  • memory/2340-6-0x0000000005400000-0x0000000005482000-memory.dmp

    Filesize

    520KB

  • memory/2340-22-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2596-11-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2596-19-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2596-17-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2596-15-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2596-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2596-12-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2596-9-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2596-20-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2596-21-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB

  • memory/2596-8-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2596-23-0x0000000074190000-0x000000007487E000-memory.dmp

    Filesize

    6.9MB