Overview

overview

10

Static

static

10

cd4d28a18d...13.exe

windows7-x64

10

cd4d28a18d...13.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    cd4d28a18dcf8944c2d6363a30fe0cbca2b1d52d48b43ae46965edfba8c8b013.exe

  • Size

    84KB

  • Sample

    230313-hzym6sba31

  • MD5

    99de3db1171255a9e1e8f5caf97966c3

  • SHA1

    3a12838170a93d401ebd0081fde14e26342a78f7

  • SHA256

    cd4d28a18dcf8944c2d6363a30fe0cbca2b1d52d48b43ae46965edfba8c8b013

  • SHA512

    043d79d054c40eb7a914ff7722af22ed64aea92db16997da6f6f66545f9a60cd0e98e031027c8e01a0680a29a88837ea0a8c127a9a87d5861ca9b53b60d2c27c

  • SSDEEP

    1536:/hhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP60r:ZhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+b

Score
10/10
remcosupdateevasionpersistencerattrojan

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Update

C2

ytuna1709.duckdns.org:3035

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    Windows Start-Up Audio.exe

  • copy_folder

    Microsoft Start-Up Media

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %WinDir%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    Windows Display

  • keylog_path

    %WinDir%

  • mouse_option

    false

  • mutex

    Windows Audio

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Microsoft Sound Endpoint

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    Username;password;proforma;invoice;notepad

Targets

    • Target

      cd4d28a18dcf8944c2d6363a30fe0cbca2b1d52d48b43ae46965edfba8c8b013.exe

    • Size

      84KB

    • MD5

      99de3db1171255a9e1e8f5caf97966c3

    • SHA1

      3a12838170a93d401ebd0081fde14e26342a78f7

    • SHA256

      cd4d28a18dcf8944c2d6363a30fe0cbca2b1d52d48b43ae46965edfba8c8b013

    • SHA512

      043d79d054c40eb7a914ff7722af22ed64aea92db16997da6f6f66545f9a60cd0e98e031027c8e01a0680a29a88837ea0a8c127a9a87d5861ca9b53b60d2c27c

    • SSDEEP

      1536:/hhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP60r:ZhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+b

    Score
    10/10
    remcosupdateevasionpersistencerattrojan

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

3
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

Impact

Tasks