Overview

overview

10

Static

static

1

8516bed104...d2.xls

windows7-x64

10

8516bed104...d2.xls

windows10-2004-x64

1

Sharing

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General

  • Target

    8516bed10436ef604d5e00b62d9c1f2424d7b89c4e0a8ec758a20840e430d2d2

  • Size

    139KB

  • Sample

    240521-s5p84aaf93

  • MD5

    33c24bfd204eb430c7fb4f62c823dec3

  • SHA1

    c158a1a1e8ec1559a5dac3d87bae1ce7fc105cdf

  • SHA256

    8516bed10436ef604d5e00b62d9c1f2424d7b89c4e0a8ec758a20840e430d2d2

  • SHA512

    fffd30da7bf8813d2c2a5fbea011eb2ccf74c41be7a55c9dd3a597101cdecf887a0f808203e930d2a2f3d92c81752a8e8a2e83e98ac380fe206325d81b13539e

  • SSDEEP

    3072:w0WF26TWkRjpx3AMh0I+Cu4nxmdfRud/pp7M98PQ7hJS5mH:w0W86Tfj7wu0snKfI1pp7M98o7hJSS

Score
10/10
remcosremotehostexecutionpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.172.31.6:1070

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

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-5YSTYW

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      8516bed10436ef604d5e00b62d9c1f2424d7b89c4e0a8ec758a20840e430d2d2

    • Size

      139KB

    • MD5

      33c24bfd204eb430c7fb4f62c823dec3

    • SHA1

      c158a1a1e8ec1559a5dac3d87bae1ce7fc105cdf

    • SHA256

      8516bed10436ef604d5e00b62d9c1f2424d7b89c4e0a8ec758a20840e430d2d2

    • SHA512

      fffd30da7bf8813d2c2a5fbea011eb2ccf74c41be7a55c9dd3a597101cdecf887a0f808203e930d2a2f3d92c81752a8e8a2e83e98ac380fe206325d81b13539e

    • SSDEEP

      3072:w0WF26TWkRjpx3AMh0I+Cu4nxmdfRud/pp7M98PQ7hJS5mH:w0W86Tfj7wu0snKfI1pp7M98o7hJSS

    Score
    10/10
    remcosremotehostexecutionpersistencerat

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Abuses OpenXML format to download file from external location

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Exploitation for Client Execution

1
T1203

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

2
T1112

Credential Access

Discovery

System Information Discovery

3
T1082

Query Registry

3
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks