Overview

overview

10

Static

static

1

Drwg.xls

windows7-x64

10

Drwg.xls

windows10-2004-x64

1

Sharing

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General

  • Target

    Drwg.xls

  • Size

    308KB

  • Sample

    240522-wtvafsbe31

  • MD5

    fd1a4445eb0ac43a444303dfbcd14bff

  • SHA1

    cdd327c448729d39584282a461d10c37b3f00a4f

  • SHA256

    cfa70bdd4f97f10fdb4067b7683edc6aefcd90ac65e83e783efc3e8ffbfedc03

  • SHA512

    2243b86581a8bfa0315367d5c914a2a72f4137585b9ce4e86bacd6ecf42ef570e591ec39dff5262769307590fbb138417149a9f8dedb442bd42eddc59eaa78fa

  • SSDEEP

    6144:lKW5fnuSrQBkay4KX4mEmHSCn0rhia5WQ2P2TFHsEvT9KLtXqO:vvuSrgkayFX4/ULTPasEvYLtq

Score
10/10
remcosfreshcollectionexecutionratspywarestealer

Malware Config

Extracted

Family

remcos

Botnet

Fresh

C2

manxzas12.duckdns.org:14646

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-21CR3E

  • 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

      Drwg.xls

    • Size

      308KB

    • MD5

      fd1a4445eb0ac43a444303dfbcd14bff

    • SHA1

      cdd327c448729d39584282a461d10c37b3f00a4f

    • SHA256

      cfa70bdd4f97f10fdb4067b7683edc6aefcd90ac65e83e783efc3e8ffbfedc03

    • SHA512

      2243b86581a8bfa0315367d5c914a2a72f4137585b9ce4e86bacd6ecf42ef570e591ec39dff5262769307590fbb138417149a9f8dedb442bd42eddc59eaa78fa

    • SSDEEP

      6144:lKW5fnuSrQBkay4KX4mEmHSCn0rhia5WQ2P2TFHsEvT9KLtXqO:vvuSrgkayFX4/ULTPasEvYLtq

    Score
    10/10
    remcosfreshcollectionexecutionratspywarestealer

    • Remcos

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

      ratremcos

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • 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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Accesses Microsoft Outlook accounts

      collection

    • 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

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

3
T1082

Query Registry

3
T1012

Lateral Movement

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks