Analysis

  • max time kernel
    148s
  • max time network
    133s
  • 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 13:55

General

  • Target

    172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.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\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe
    "C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1704
    • C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\eiutivcdwncctaxtginkkzjucjwwvt"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:4060
    • C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\pczlbnnxswupvolfqsadneelkpnfoetspb"
      2⤵
      • Accesses Microsoft Outlook accounts
      • System Location Discovery: System Language Discovery
      PID:3616
    • C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\refwbg"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:624

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

    b0cb83a216121dddde47a9fa44734f5d

    SHA1

    882a60bb6650905d761069fe36fcbb2da1b23d4f

    SHA256

    672c8ca20721425146b0cbe93fed11372be3f9331165dfb2169e21e51c5623aa

    SHA512

    8f711821c776950d8822d30b658f4075793c1aca5b663044ec08e5d6c5a17be22d5f58bda78a2b09971f726b3a8c660673cf66df0d3d7b9f62a15f57c48b21a2

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

    Filesize

    4KB

    MD5

    982ebb238759653970e22ee9fad24470

    SHA1

    15fca6be8cc4a276c9f70a73f28c52c3b0eead15

    SHA256

    c8b9cad5602932ea51b923f39f4b2d9aedf1f4915880d89032ab6636acaf9bea

    SHA512

    c8777edf0dd3e72e0cf3bb89db2bc7856fed0eeca7199806fec341e9168899e3b700c73a6b2e7cb0e8ccc5523116d6ecfde5c9ebcc83288a162dd1b0ea78201b

  • memory/624-7-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/624-24-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/624-17-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/624-14-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/624-13-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1704-33-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1704-29-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1704-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1704-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1704-34-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1704-32-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3616-8-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3616-5-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3616-21-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3616-16-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3616-11-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4060-26-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4060-15-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4060-10-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4060-12-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4060-3-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB