Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2024 15:05

General

  • Target

    MalwareBazaar.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 10 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\MalwareBazaar.exe
    "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
      C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe /stext "C:\Users\Admin\AppData\Local\Temp\sxrzxtubupzzgyowswnamrhywiwhuk"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:968
    • C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
      C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe /stext "C:\Users\Admin\AppData\Local\Temp\dzesymfdqxrmqekikghbpecpxwoqnvwkf"
      2⤵
      • Accesses Microsoft Outlook accounts
      • System Location Discovery: System Language Discovery
      PID:888
    • C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
      C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe /stext "C:\Users\Admin\AppData\Local\Temp\ntkdy"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1560

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

    43743511e278d786c57459df3244a772

    SHA1

    a5ce6c581250aa0be529070b03899a1006ebe97a

    SHA256

    c29b71d575e6fefac1679e2307b6f627b669efef36b750923d51a7a72f33c0de

    SHA512

    fb65af3f9ae1c93d904fedaad498bb1b452f0a920eebe49e214a2e735bd4700395109e9bc0e6aed81980e64664472c37077d91f400830e5f5a51d75a462902ae

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

    Filesize

    4KB

    MD5

    5f9f645ff4e46b384ac7a261904aabcb

    SHA1

    203a1216e576f93c2236a833b93c32c4fd8a0d3b

    SHA256

    887d93e6cbd14afa0cdf26f303b89cc1963ca5c5d7faba6c91ae87be183273b3

    SHA512

    b679e91072a1c3fa59e40ff6565c23549f33520c9c6bc8d1f4e055d65dddec3a8e93c165060668fbabae9f27de28985cc826b23f8402caa5d7bd4455165acbde

  • memory/888-21-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/888-16-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/888-13-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/888-11-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/888-4-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/968-3-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/968-10-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/968-17-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/968-18-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/968-29-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1560-9-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1560-14-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1560-25-0x0000000000430000-0x00000000004F9000-memory.dmp

    Filesize

    804KB

  • memory/1560-27-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1560-12-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1560-15-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1560-7-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2288-32-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2288-35-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2288-36-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2288-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2288-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB