Overview

overview

10

Static

static

3

01 DEMANDA...ZA.exe

windows7-x64

4

01 DEMANDA...ZA.exe

windows10-2004-x64

10

CiscoSpark...er.dll

windows7-x64

10

CiscoSpark...er.dll

windows10-2004-x64

10

VERSION.dll

windows7-x64

1

VERSION.dll

windows10-2004-x64

1

Analysis

  • max time kernel
    118s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-12-2024 19:18

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General

  • Target

    01 DEMANDA LABORAL POR ABUSO DE CONFIANZA.exe

  • Size

    121KB

  • MD5

    9c521a90653df5d1efbd0cea12318863

  • SHA1

    ec2afaf10b78dabfead9e9e485d454789c244188

  • SHA256

    85bcfc9de06bd0751245ad882f7e2141f340cdedefcaefb8deabbc0792088a58

  • SHA512

    d1bbb5e07e7df5fe6da9786ecee06c0dfd9e46067de48a139323aa045f81139b78404c4f3f77b1f6f58c3b11d1edf88d0c06ad42fcf7482436367f2444e6152e

  • SSDEEP

    1536:WMlHLXYAcNG6d2vlvPahT21HXNMMUpOh1lyDi8pgI7G/mJK:9raZ2AtmXmpXDiUgIK/MK

Score
10/10
remcosmellisdiscoveryrat

Malware Config

Extracted

Family

remcos

Botnet

mellis

C2

melloreservas.kozow.com:5353

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-OX0E5C

  • 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:\Users\Admin\AppData\Local\Temp\01 DEMANDA LABORAL POR ABUSO DE CONFIANZA.exe
    "C:\Users\Admin\AppData\Local\Temp\01 DEMANDA LABORAL POR ABUSO DE CONFIANZA.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3156
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c schtasks /create /tn "l1TC0x" /tr "C:\Users\Admin\AppData\Roaming\01 DEMANDA LABORAL POR ABUSO DE CONFIANZA.exe" /sc onlogon /rl highest /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4704
      • C:\Windows\system32\schtasks.exe
        schtasks /create /tn "l1TC0x" /tr "C:\Users\Admin\AppData\Roaming\01 DEMANDA LABORAL POR ABUSO DE CONFIANZA.exe" /sc onlogon /rl highest /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3964
    • 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:4068
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\cckuxumqbbpcmdjrzeflniptwxwjwcd.vbs"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1352

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    500B

    MD5

    f1da013fa58295ac94372331e618f047

    SHA1

    b52f602bca7d2b9a04a55be4a1a4de857c98cbdb

    SHA256

    01df7d7ec8acb49f038a93cf1aeb9a79ddda138fa38992f477e6448689c09cd9

    SHA512

    fc1cfb5f09b5d96958d9387f582629e6691e996890ea345466fc47e214be074c9c625f3fb7f4e86d7e5b9864edcfe0d40031e6a0d6c496c5427d21bcffba26a8

    Download Submit

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

    481KB

    MD5

    a30283c01840f1a26afe40ae0b576bf8

    SHA1

    f4568fda687c1720b80ff07a12b38f8d1d6af33c

    SHA256

    e2a4a7e147898dc2d01f1b4d2892000395f5e43770a25ecdb170bb185ac0477a

    SHA512

    8fc5de3c634032f57cebf8f7967ecca0952a37e5c949f34cc208f7734a6162e8276699de1b4501ba196170468b4ef472002db09dc3fcee072e66ff3477a24c54

    Download Submit

  • memory/3156-0-0x0000000000400000-0x0000000000A22000-memory.dmp

    Filesize

    6.1MB

    Download

  • memory/3156-20-0x0000000068840000-0x0000000068F29000-memory.dmp

    Filesize

    6.9MB

    Download