Overview

overview

10

Static

static

10

remcos.exe

windows10-2004-x64

10

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General

  • Target

    remcos.exe

  • Size

    469KB

  • Sample

    241130-vlthhstlcq

  • MD5

    e0a193382a236af12dfaf3d1914c6ec5

  • SHA1

    1931c500aead108e6c9b3626c456ff283af87b55

  • SHA256

    036d32579d1986bae981d1a1259c6911c4014d18c04687f5c607597cc13703ab

  • SHA512

    09c3d300b15d4e7f94943a741eda611f10764ebbdbad649052093974f427bce5cbad4ef1cdca6784b7bb6e7a9b4f5abbf5f6b46b3deab55786e2c8d615b85511

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSOn9:uiLJbpI7I2WhQqZ7O9

Score
10/10
remcosremotehostdiscoveryevasionpersistencerattrojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

lesbian-failures.gl.at.ply.gg:11241

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    SecurityHealthSystray.exe

  • copy_folder

    SecurityHealthSystray

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-FGMZB0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    SecurityHealthSystray.exe

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      remcos.exe

    • Size

      469KB

    • MD5

      e0a193382a236af12dfaf3d1914c6ec5

    • SHA1

      1931c500aead108e6c9b3626c456ff283af87b55

    • SHA256

      036d32579d1986bae981d1a1259c6911c4014d18c04687f5c607597cc13703ab

    • SHA512

      09c3d300b15d4e7f94943a741eda611f10764ebbdbad649052093974f427bce5cbad4ef1cdca6784b7bb6e7a9b4f5abbf5f6b46b3deab55786e2c8d615b85511

    • SSDEEP

      12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSOn9:uiLJbpI7I2WhQqZ7O9

    Score
    10/10
    remcosremotehostdiscoveryevasionpersistencerattrojan

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • UAC bypass

      evasiontrojan

    • Adds policy Run key to start application

      persistence

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

4
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks