Overview

overview

10

Static

static

3

f99f95fa5c...8c.exe

windows7-x64

7

f99f95fa5c...8c.exe

windows10-2004-x64

10

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

Sharing

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General

  • Target

    f99f95fa5cd8015a84c6aef4ce0444b5e26e8c6bff54c13335a4d1a92201418c.exe

  • Size

    2.4MB

  • Sample

    240207-1kqm5abef2

  • MD5

    1414d0efbbb09adb1ba13bf4425674e2

  • SHA1

    6baa8796c4b669fbdcb6bcbdae2a54c83ddee8cc

  • SHA256

    f99f95fa5cd8015a84c6aef4ce0444b5e26e8c6bff54c13335a4d1a92201418c

  • SHA512

    73bb2737f9ef75661a038eac9c5921cd2e5260b4af032a0aa6950b322114181df541b6cb606490bc81bab152f43b5dc5104a7be142f0121da24f951f9fc2c776

  • SSDEEP

    49152:vgzFgXJBY8OQ7HnUjp3i1JNQvjJO0amGSNTgj8tff0JtvViqfKHv1uBERCZju:YzIjr7Hnspy1JNkKJSNTgaXOVGv1uSR5

Score
10/10
guloaderremcos2024collectiondownloaderpersistenceratspywarestealer

Malware Config

Extracted

Family

remcos

Botnet

2024

C2

72.11.158.94:1604

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    vexplorers.exe

  • copy_folder

    vexplorers

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-800RNZ

  • 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

      f99f95fa5cd8015a84c6aef4ce0444b5e26e8c6bff54c13335a4d1a92201418c.exe

    • Size

      2.4MB

    • MD5

      1414d0efbbb09adb1ba13bf4425674e2

    • SHA1

      6baa8796c4b669fbdcb6bcbdae2a54c83ddee8cc

    • SHA256

      f99f95fa5cd8015a84c6aef4ce0444b5e26e8c6bff54c13335a4d1a92201418c

    • SHA512

      73bb2737f9ef75661a038eac9c5921cd2e5260b4af032a0aa6950b322114181df541b6cb606490bc81bab152f43b5dc5104a7be142f0121da24f951f9fc2c776

    • SSDEEP

      49152:vgzFgXJBY8OQ7HnUjp3i1JNQvjJO0amGSNTgj8tff0JtvViqfKHv1uBERCZju:YzIjr7Hnspy1JNkKJSNTgaXOVGv1uSR5

    Score
    10/10
    guloaderremcos2024collectiondownloaderpersistenceratspywarestealer

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Remcos

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

      ratremcos

    • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

    • Detects executables built or packed with MPress PE compressor

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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 NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

    • Target

      $PLUGINSDIR/System.dll

    • Size

      12KB

    • MD5

      564bb0373067e1785cba7e4c24aab4bf

    • SHA1

      7c9416a01d821b10b2eef97b80899d24014d6fc1

    • SHA256

      7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5

    • SHA512

      22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

    • SSDEEP

      192:nenY0qWTlt70IAj/lQ0sEWc/wtYbBH2aDybC7y+XBDIwL:n8+Qlt70Fj/lQRY/9VjjfL

    Score
    3/10
    behavioral3behavioral4

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

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks