Overview

overview

10

Static

static

1

PO 4500025813.xls

windows7-x64

10

PO 4500025813.xls

windows10-2004-x64

1

Sharing

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General

  • Target

    PO 4500025813.xls

  • Size

    236KB

  • Sample

    240523-wvxf7sbe56

  • MD5

    1a1256f2cb9b79e436d93cb4ef7965e9

  • SHA1

    d759cc8c94f83d931d339bf576c2d2a6d2edc111

  • SHA256

    547e6df90153f3d2b2c8ae05399fef0b98431f2ec3d5628cb570acf0f0af393e

  • SHA512

    04a0cf5fd50ed7765a2231fc20d2a682ea562dfb18a302de159a97dd9610b79f09385289558478d4d07f068697479b52ec452b1b28cedcfb92b6149563c5b04a

  • SSDEEP

    6144:4e4UcLe0JOqPQZR8MDdATCR3tSve2wZX/wi6O9whspx:2UP/qPQZR8MxAm/SWjZPtrwS

Score
10/10
remcosfreshcollectionexecutionpersistenceratspywarestealer

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

      PO 4500025813.xls

    • Size

      236KB

    • MD5

      1a1256f2cb9b79e436d93cb4ef7965e9

    • SHA1

      d759cc8c94f83d931d339bf576c2d2a6d2edc111

    • SHA256

      547e6df90153f3d2b2c8ae05399fef0b98431f2ec3d5628cb570acf0f0af393e

    • SHA512

      04a0cf5fd50ed7765a2231fc20d2a682ea562dfb18a302de159a97dd9610b79f09385289558478d4d07f068697479b52ec452b1b28cedcfb92b6149563c5b04a

    • SSDEEP

      6144:4e4UcLe0JOqPQZR8MDdATCR3tSve2wZX/wi6O9whspx:2UP/qPQZR8MxAm/SWjZPtrwS

    Score
    10/10
    remcosfreshcollectionexecutionpersistenceratspywarestealer

    • 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

    • Adds Run key to start application

      persistence

    • 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

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

2
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