Overview

overview

10

Static

static

3

DEMANDA LA...65.exe

windows7-x64

10

DEMANDA LA...65.exe

windows10-2004-x64

10

DEMANDA LA...MM.dll

windows7-x64

10

DEMANDA LA...MM.dll

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2024 21:23

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    DEMANDA LABORAL POR ABUSO DE CONFIANZA 01/WINMM.dll

  • Size

    5.0MB

  • MD5

    c1e4443c640d1dc0b408356a0ef216be

  • SHA1

    9ca2853691bf347e12e620dadcf6ea1cceb817fe

  • SHA256

    812e1927550e39501b2477df2479dc239b428d11bbae81e719c220769ccd7b34

  • SHA512

    2d47e620c46634519a861b68ac779e22a910b1f3495d5fb8a3fbad43601bc430a13e538d571192c6aaae83fda2d0c1607901aa7a360bea18da732d1bf81b86c3

  • SSDEEP

    98304:3yhaH4iFZp4lHd4iQfJuI5Tf4rYfthIfsuspcZpccVHu2S5nneBOc7uZ:3dH4i6l2wWFhnbi/HuveB

Score
10/10
remcosgusdiscoveryrat

Malware Config

Extracted

Family

remcos

Botnet

GUS

C2

mastergusta.kozow.com:5151

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-6Q2P7E

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

    ratremcos
  • Remcos family
    remcos
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

    discovery
  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\DEMANDA LABORAL POR ABUSO DE CONFIANZA 01\WINMM.dll",#1
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3564
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c schtasks /create /tn "8M2nd3VkhBIAnPBDO" /tr "C:\Users\Admin\AppData\Roaming\rundll32.exe" /sc onlogon /rl highest /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4132
      • C:\Windows\system32\schtasks.exe
        schtasks /create /tn "8M2nd3VkhBIAnPBDO" /tr "C:\Users\Admin\AppData\Roaming\rundll32.exe" /sc onlogon /rl highest /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1240
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4056
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\tzae.vbs"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1756

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\svchost.exe
    Filesize

    481KB

    MD5

    1b092f1dca5c6155e160c454446926cf

    SHA1

    e27464092f4ae4b9116fcccd00e43eb631719e85

    SHA256

    47d0885bbcbb363ded1b6cf13099e201e53e2cd8ab877692ff2df93c3a320b96

    SHA512

    272b0db029f8aac92695491254307db0bb3d1f950496d3ee968a9e177b04d151c8acb95be8b942ead6624935a46091c948ce04592fe6b12dfe12fd4104d25682

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\tzae.vbs
    Filesize

    500B

    MD5

    f1da013fa58295ac94372331e618f047

    SHA1

    b52f602bca7d2b9a04a55be4a1a4de857c98cbdb

    SHA256

    01df7d7ec8acb49f038a93cf1aeb9a79ddda138fa38992f477e6448689c09cd9

    SHA512

    fc1cfb5f09b5d96958d9387f582629e6691e996890ea345466fc47e214be074c9c625f3fb7f4e86d7e5b9864edcfe0d40031e6a0d6c496c5427d21bcffba26a8

    Download Submit

  • memory/3564-0-0x0000000000400000-0x0000000000849000-memory.dmp

    Filesize

    4.3MB

    Download

  • memory/3564-19-0x000000006D080000-0x000000006D595000-memory.dmp

    Filesize

    5.1MB

    Download