General

  • Target

    MAEB-157-88949280.docx.doc

  • Size

    10KB

  • Sample

    221005-l3crnaebfj

  • MD5

    49f5dca0159055482bcb7440bcda8fcb

  • SHA1

    ca87c82b8713faa52017f375a9f9a63d9c13fb2f

  • SHA256

    204327a339923b46b1fece95a1d1b6d0b2e2b5917ad10e65b27fefa6d717ea33

  • SHA512

    cffc825895d7cd0c02dccd5585e5bb4cad386fda0361259d0d562d6fa8148e62bd46cf714172459cb1ddb887d1020491786bbf7f034e0f9189ae29e04978418c

  • SSDEEP

    192:ScIMmtPYqPC7UpG/bkpbJNOfrdlJFtGxV3Orl:SPXgqPCfIJNOfjJFtGxxOR

Malware Config

Extracted

Rule
Microsoft Office WebSettings Relationship
C2

http://document_docs@1806680503/wwuuUASDbjasduhuasduyuASHUDHUSADHUASDU/jjjhjjhjhjhhggftftftftftftf.doc

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.populargroup.pk
  • Port:
    587
  • Username:
    stores.pfi3@populargroup.pk
  • Password:
    Shahid0786pfi3

Extracted

Family

remcos

Botnet

RemoteHost

C2

mam.mastercoa.co:37824

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-3FCFQU

  • 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

Targets

    • Target

      MAEB-157-88949280.docx.doc

    • Size

      10KB

    • MD5

      49f5dca0159055482bcb7440bcda8fcb

    • SHA1

      ca87c82b8713faa52017f375a9f9a63d9c13fb2f

    • SHA256

      204327a339923b46b1fece95a1d1b6d0b2e2b5917ad10e65b27fefa6d717ea33

    • SHA512

      cffc825895d7cd0c02dccd5585e5bb4cad386fda0361259d0d562d6fa8148e62bd46cf714172459cb1ddb887d1020491786bbf7f034e0f9189ae29e04978418c

    • SSDEEP

      192:ScIMmtPYqPC7UpG/bkpbJNOfrdlJFtGxV3Orl:SPXgqPCfIJNOfjJFtGxxOR

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • Remcos

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

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Abuses OpenXML format to download file from external location

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook accounts

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Scripting

1
T1064

Modify Registry

3
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

3
T1005

Email Collection

2
T1114

Tasks