Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17/12/2024, 15:40 UTC

General

  • Target

    comprobante de pago.exe

  • Size

    2.4MB

  • MD5

    2be05e23b58f0391fa6ff8f4fd3e4cf2

  • SHA1

    6016c4770545b024784d39359aa1476b468ff127

  • SHA256

    d41dac29dbd4d480221a0598ef8a784fcc856f2cca2dae9c8dd38adc01d7ebb8

  • SHA512

    6753dbc9b858ccbc08c402b21da4b3d43785097f5cfd8e02cb894c4d55735e34e907403737b5a7d183c5fe94bc6a034613cf434c582408ab3ebb22c1067a42de

  • SSDEEP

    49152:w3ASbdYAm4zEbdYAm4zWbdYAm4z23Ag3AWbdYAm4zSbdYAm4zO3AKBGmhesZjzQ:iA4drWdr0drkASA0dr4dr8AVHsBzQ

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.horeca-bucuresti.ro
  • Port:
    21
  • Username:
    biggiemma@horeca-bucuresti.ro
  • Password:
    e)rWKbKP8~mO

Signatures

  • AgentTesla

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

  • Agenttesla family
  • 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 3 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
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\comprobante de pago.exe
    "C:\Users\Admin\AppData\Local\Temp\comprobante de pago.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2088
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2192

Network

  • flag-us
    DNS
    ip-api.com
    regasm.exe
    Remote address:
    8.8.8.8:53
    Request
    ip-api.com
    IN A
    Response
    ip-api.com
    IN A
    208.95.112.1
  • flag-us
    GET
    http://ip-api.com/line/?fields=hosting
    regasm.exe
    Remote address:
    208.95.112.1:80
    Request
    GET /line/?fields=hosting HTTP/1.1
    Host: ip-api.com
    Connection: Keep-Alive
    Response
    HTTP/1.1 200 OK
    Date: Tue, 17 Dec 2024 15:41:00 GMT
    Content-Type: text/plain; charset=utf-8
    Content-Length: 6
    Access-Control-Allow-Origin: *
    X-Ttl: 59
    X-Rl: 43
  • 208.95.112.1:80
    http://ip-api.com/line/?fields=hosting
    http
    regasm.exe
    310 B
    347 B
    5
    4

    HTTP Request

    GET http://ip-api.com/line/?fields=hosting

    HTTP Response

    200
  • 8.8.8.8:53
    ip-api.com
    dns
    regasm.exe
    56 B
    72 B
    1
    1

    DNS Request

    ip-api.com

    DNS Response

    208.95.112.1

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2088-1-0x0000000000010000-0x0000000000279000-memory.dmp

    Filesize

    2.4MB

  • memory/2088-4-0x00000000004A0000-0x00000000004A1000-memory.dmp

    Filesize

    4KB

  • memory/2088-10-0x000000007294A000-0x000000007294B000-memory.dmp

    Filesize

    4KB

  • memory/2088-9-0x0000000000620000-0x0000000000720000-memory.dmp

    Filesize

    1024KB

  • memory/2088-11-0x0000000072940000-0x0000000072A93000-memory.dmp

    Filesize

    1.3MB

  • memory/2088-36-0x0000000072940000-0x0000000072A93000-memory.dmp

    Filesize

    1.3MB

  • memory/2088-43-0x0000000072940000-0x0000000072A93000-memory.dmp

    Filesize

    1.3MB

  • memory/2192-42-0x0000000000400000-0x0000000000447000-memory.dmp

    Filesize

    284KB

  • memory/2192-40-0x0000000000400000-0x0000000000447000-memory.dmp

    Filesize

    284KB

  • memory/2192-37-0x0000000000400000-0x0000000000447000-memory.dmp

    Filesize

    284KB

  • memory/2192-45-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

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