Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-07-2024 01:07

General

  • Target

    1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe

  • Size

    483KB

  • MD5

    2b985c758a227407855e1d8e14f8863d

  • SHA1

    993301bbe17c097debb66c6dec278d4f74063b41

  • SHA256

    1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288

  • SHA512

    258627a5105f0d03f2cdf3f3980adc64f740fa0557a2e46e216e45ed8bf51424008aa2945795b8f215ae7ce8c83ff253ac0ef3a8b104c4a3beabc5c052eae0d9

  • SSDEEP

    6144:QXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZoAX0cNz5Gv:QX7tPMK8ctGe4Dzl4h2QnuPs/ZoGcv

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

maveing.duckdns.org:18576

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

    Notepo

  • keylog_path

    %Temp%

  • mouse_option

    false

  • mutex

    Rmc-F4JFYD

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 9 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe
    "C:\Users\Admin\AppData\Local\Temp\1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3104
    • C:\Users\Admin\AppData\Local\Temp\1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe
      C:\Users\Admin\AppData\Local\Temp\1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe /stext "C:\Users\Admin\AppData\Local\Temp\feqac"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:2388
    • C:\Users\Admin\AppData\Local\Temp\1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe
      C:\Users\Admin\AppData\Local\Temp\1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe /stext "C:\Users\Admin\AppData\Local\Temp\qywtdezdv"
      2⤵
      • Accesses Microsoft Outlook accounts
      • System Location Discovery: System Language Discovery
      PID:5044
    • C:\Users\Admin\AppData\Local\Temp\1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe
      C:\Users\Admin\AppData\Local\Temp\1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288.exe /stext "C:\Users\Admin\AppData\Local\Temp\aabldxkxisvp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4984

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Notepo\logs.dat

    Filesize

    144B

    MD5

    a4a8f435429b9a366154b3755bddedf5

    SHA1

    5599292e9747cc967cb102d76c5e582d3292a517

    SHA256

    617fe4cb7b8e7282ff2ed9becc913031b329ef283080eadce6c1881dd6d54d8f

    SHA512

    60b3463f8c05fb230636013ee4a45441c7e4ff7f0ebab784cd683b597e86e532ea1d0a2d982f9336f3b8a872d756c2874dbd0d069f55a1a828fb54955d96f660

  • C:\Users\Admin\AppData\Local\Temp\feqac

    Filesize

    4KB

    MD5

    bfad3231b66bc41dc26604f95ff7798f

    SHA1

    3bb8a68b16f2dc00e7ae9757fd4be2d10dbe91f1

    SHA256

    5b925ab999c036167ea8ddb4ea5256d33f56405a62faf0c40837d3e69588c5e2

    SHA512

    1339ac589e8a88ce019a638a68f8db4d93193b24c8252fe4825de02b816c4572fcc9722d48752904ccba5968072b8dd5070117ad88e8aa4a5dcd53d3c3b5cc0a

  • memory/2388-27-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2388-13-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2388-5-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2388-1-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2388-10-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3104-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3104-30-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3104-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3104-34-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3104-33-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/4984-12-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4984-25-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4984-7-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4984-11-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4984-20-0x0000000000430000-0x00000000004F9000-memory.dmp

    Filesize

    804KB

  • memory/4984-14-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/5044-16-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/5044-15-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/5044-6-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/5044-23-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/5044-3-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB