Overview

overview

10

Static

static

10

Operagx.exe

windows7-x64

10

Operagx.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Operagx.bin

  • Size

    92KB

  • Sample

    240620-c4eszaydpk

  • MD5

    338855fb71a903f1757fe495521b9592

  • SHA1

    936ebddbcfdd3918261b235a6f1f964339c87aee

  • SHA256

    88b9ba5dcd5d823a93ba2cf64d7644e991646d9e31686fca37d60862057f9e54

  • SHA512

    384f7fcf215bbc67d71dec9777925524bfa9714a1aa1f17e90f02d229ab522d26191a46b1fe0c665f14c263b2d82144fe8aa53de870dca4788bb50a05f2af064

  • SSDEEP

    1536:whhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6krl:WhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+B

Score
10/10
remcostestpersistencerat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

TEST

C2

0.tcp.ngrok.io:11181

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    Calc.exe

  • copy_folder

    system8

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_ojycawqfhr

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Calc

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      Operagx.bin

    • Size

      92KB

    • MD5

      338855fb71a903f1757fe495521b9592

    • SHA1

      936ebddbcfdd3918261b235a6f1f964339c87aee

    • SHA256

      88b9ba5dcd5d823a93ba2cf64d7644e991646d9e31686fca37d60862057f9e54

    • SHA512

      384f7fcf215bbc67d71dec9777925524bfa9714a1aa1f17e90f02d229ab522d26191a46b1fe0c665f14c263b2d82144fe8aa53de870dca4788bb50a05f2af064

    • SSDEEP

      1536:whhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6krl:WhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+B

    Score
    10/10
    remcostestpersistencerat

    • Remcos

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

      ratremcos

    • detects Windows exceutables potentially bypassing UAC using eventvwr.exe

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    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

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks