Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    30/04/2024, 18:05

General

  • Target

    Invoice # 2357.exe

  • Size

    573KB

  • MD5

    100db370d21c6125afd6d3358d100860

  • SHA1

    cb7a55063bcad757c98db289720b79cc127e8c55

  • SHA256

    60cec2b7e0df1c0b13e6b636ae979b2e6abb5e567a62326bf36c73c84a348636

  • SHA512

    a9ea18c130358aae6d5516f765a09c1325a25237ab27aff1656b2e774aa81506e0d397190b3a9456c77e638da630ddd0618e6f56c68531ccbe9b3b3dd1213669

  • SSDEEP

    12288:lfKDRvpATCjwb5PpJYuFAVM8YyoCP7r9r/+ppppppppppppppppppppppppppppd:EbATvRpJT8YZC1q

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7185592808:AAH40VecOIxIokAMjd2dL-3MoQxpbXJyxfE/

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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice # 2357.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice # 2357.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\Invoice # 2357.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice # 2357.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2376

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1444-0-0x00000000010F0000-0x0000000001186000-memory.dmp

    Filesize

    600KB

  • memory/1444-1-0x0000000074110000-0x00000000747FE000-memory.dmp

    Filesize

    6.9MB

  • memory/1444-2-0x0000000004600000-0x0000000004640000-memory.dmp

    Filesize

    256KB

  • memory/1444-20-0x0000000074110000-0x00000000747FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2376-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2376-15-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2376-13-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2376-11-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2376-4-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2376-7-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2376-5-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2376-16-0x0000000074090000-0x000000007477E000-memory.dmp

    Filesize

    6.9MB

  • memory/2376-17-0x0000000001080000-0x00000000010C0000-memory.dmp

    Filesize

    256KB

  • memory/2376-3-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2376-21-0x0000000074090000-0x000000007477E000-memory.dmp

    Filesize

    6.9MB

  • memory/2376-22-0x0000000001080000-0x00000000010C0000-memory.dmp

    Filesize

    256KB