Overview

overview

10

Static

static

Request fo...df.exe

windows7_x64

10

Request fo...df.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    b528b21b9d7de9c759e0249ae2d30582255cc370f159eb9cd6a115da0f9923dc

  • Size

    398KB

  • Sample

    220520-2anlfsaahr

  • MD5

    a2aca1910990d517fbd73c67b8d5cd22

  • SHA1

    37e5ae8cf9836180c1d080b77887aceb87d945ab

  • SHA256

    b528b21b9d7de9c759e0249ae2d30582255cc370f159eb9cd6a115da0f9923dc

  • SHA512

    842eb4bec39778a5a4adeda48da52f8f5d5c630f21c6f89120af3eece54174c1a00947f398174bf20a230397ff69210733faa6281324a50c34aa72ecb460be9e

Score
10/10
remcosseptember boyevasionrat

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

september boy

C2

jackyjian1965.hopto.org:5285

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-C4E1UN

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Targets

    • Target

      Request for quotation and No_863972 order,pdf.exe

    • Size

      544KB

    • MD5

      e84d1f5c3a8f6c79d8516f221104191c

    • SHA1

      a8b97e5f46d406c15c0abb55accf6fe2da3dfbec

    • SHA256

      e17255079fd94918e8e003447c4698ec67af308f62fdadec71e9751d24d5d93f

    • SHA512

      eb5257c6f0e649f7418a77b6f4840fb39e6d6dcb68e53a26790bf3909e9a7af533624679dc75aac3b5e37d9d267228d04002fa358a2d46372d9219fed4e88f6a

    Score
    10/10
    remcosseptember boyevasionrat

    • Remcos

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

      ratremcos

    • Looks for VirtualBox Guest Additions in registry

      evasion

    • Looks for VMWare Tools registry key

      evasion

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Uses the VBS compiler for execution

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Scripting

1
T1064

Credential Access

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks