Analysis

  • max time kernel
    155s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-04-2024 01:36

General

  • Target

    a1f0f4676e135cc88ab8b6a25c70530fa193b1718bd2ba7b6ac1c997c241f6c8.exe

  • Size

    483KB

  • MD5

    c16b61d355597e973962354a54d9105a

  • SHA1

    418f9f2d76cc53b40f6f7321f93bff947af7a699

  • SHA256

    a1f0f4676e135cc88ab8b6a25c70530fa193b1718bd2ba7b6ac1c997c241f6c8

  • SHA512

    9e4ede43e4cce4a0312cb52a795bf04bf75b7f5c8dfd837f47d86968db11febc92434d1aa71d88e785d3e99e12a99d997ce0edc9061fe2b380f82d03f7c7071e

  • SSDEEP

    6144:aXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZDAXYcNH5Gv:aX7tPMK8ctGe4Dzl4h2QnuPs/ZDicv

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

jansuri.kozow.com:7232

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-3XBWOL

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 23 IoCs
  • Detects executables built or packed with MPress PE compressor 18 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 3 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 3 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1f0f4676e135cc88ab8b6a25c70530fa193b1718bd2ba7b6ac1c997c241f6c8.exe
    "C:\Users\Admin\AppData\Local\Temp\a1f0f4676e135cc88ab8b6a25c70530fa193b1718bd2ba7b6ac1c997c241f6c8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:32
    • \??\c:\program files (x86)\internet explorer\iexplore.exe
      "c:\program files (x86)\internet explorer\iexplore.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4028
      • \??\c:\program files (x86)\internet explorer\iexplore.exe
        "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\aoebuqpap"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1448
      • \??\c:\program files (x86)\internet explorer\iexplore.exe
        "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\lrktviacdcuwb"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1728
      • \??\c:\program files (x86)\internet explorer\iexplore.exe
        "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\nlpewbkvrkmbmlsd"
        3⤵
          PID:4792
        • \??\c:\program files (x86)\internet explorer\iexplore.exe
          "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\nlpewbkvrkmbmlsd"
          3⤵
            PID:3572
          • \??\c:\program files (x86)\internet explorer\iexplore.exe
            "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\nlpewbkvrkmbmlsd"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2260
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:4284

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          4KB

          MD5

          10fa8ec140c204486092fb161e567ec7

          SHA1

          4d63e1f8df3afefedb19df73d7ee5f3b1e7b6473

          SHA256

          7176ca3d0196ec46f178107fdb587adaef3f6ea65daa80eccd2371a515880e04

          SHA512

          9db4eeb3f07d8d0579f75f3426c91156809152d8c1a37c9a27bf159888f6dd97f1212ac80f5bbb17e4d86f3087c512ccba2ca50a2db07d071370bd36364e1f76

        • memory/1448-26-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1448-40-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1448-12-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1448-19-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1728-29-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1728-27-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1728-24-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1728-22-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1728-13-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2260-25-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2260-28-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2260-21-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2260-16-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/4028-11-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-45-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/4028-0-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-9-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-10-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-8-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-7-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-6-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-5-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-2-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-4-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-1-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-42-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/4028-20-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-46-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/4028-49-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/4028-48-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-47-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/4028-50-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-51-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-52-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-53-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-55-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-56-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-57-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-58-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-59-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB

        • memory/4028-60-0x0000000000700000-0x0000000000782000-memory.dmp

          Filesize

          520KB