Overview

overview

10

Static

static

1

envifa.vbs

windows7-x64

10

envifa.vbs

windows10-2004-x64

10

Sharing

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General

  • Target

    envifa.vbs

  • Size

    151KB

  • Sample

    231213-mxhw6achg4

  • MD5

    64782d163bcd2fbbbf72bf768a4b57a4

  • SHA1

    9feca15cae48fb30fc12cc241243e5294cf3b79f

  • SHA256

    0bede06c4b670f1dff945866768c643ece0db8618cf042ffeeda9d88aad09880

  • SHA512

    7c7b0c74fff9b480fd61b80903b8a8ed9a1124229e0922e286eb82146b630ecb95cc6b80fb24c72d72eed978dc1f6998e1d4f01f7806137b153692db17d0e033

  • SSDEEP

    1536:sp9p9p9p9p9p9p9pu20WwCqPv3+NhlV9p9p9p9p9p9p9p9p5MTp9p9p9p9p9p9pL:d

Score
10/10
remcosremotehostpersistencerat

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://uploaddeimagens.com.br/images/004/686/431/original/dll_vbe.jpg?1702073941
exe.dropper

https://uploaddeimagens.com.br/images/004/686/431/original/dll_vbe.jpg?1702073941

Extracted

Family

remcos

Botnet

RemoteHost

C2

remccoss2023.duckdns.org:4576

Attributes
  • audio_folder

    MicRecords

  • 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

    registros.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-E5ZBB0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Capturas de pantalla

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      envifa.vbs

    • Size

      151KB

    • MD5

      64782d163bcd2fbbbf72bf768a4b57a4

    • SHA1

      9feca15cae48fb30fc12cc241243e5294cf3b79f

    • SHA256

      0bede06c4b670f1dff945866768c643ece0db8618cf042ffeeda9d88aad09880

    • SHA512

      7c7b0c74fff9b480fd61b80903b8a8ed9a1124229e0922e286eb82146b630ecb95cc6b80fb24c72d72eed978dc1f6998e1d4f01f7806137b153692db17d0e033

    • SSDEEP

      1536:sp9p9p9p9p9p9p9pu20WwCqPv3+NhlV9p9p9p9p9p9p9p9p5MTp9p9p9p9p9p9pL:d

    Score
    10/10
    remcosremotehostpersistencerat

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks