Analysis

  • max time kernel
    152s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/03/2024, 07:33

General

  • Target
    c5YXaP80M6975Ej.exe
  • Size 891KB
  • Sample240323-jdh62aef32
  • SHA256 a25bdcab7a38affd0798e5d674341724726c866e7cd7348b3d75bdb47ccca230
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • Host

C2
  • 37.120.235.114:2269

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-FCA9SV

  • 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.

  • NirSoft MailPassView 7 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 5 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 19 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 5 IoCs
  • Suspicious use of SetThreadContext 16 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious behavior: MapViewOfSection 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
    "C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3596
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\sirYRCGgC.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1864
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sirYRCGgC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp431.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4916
    • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
      "C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2572
      • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
        C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\qoopqqhwbppgfyptapkuojd"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2320
      • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
        C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\bitiqisqpxhtqmdxszwvzoqtec"
        3⤵
          PID:4604
        • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
          C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\bitiqisqpxhtqmdxszwvzoqtec"
          3⤵
            PID:3956
          • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
            C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\bitiqisqpxhtqmdxszwvzoqtec"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:3600
          • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
            C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\lkhbrbcjdfzystzbbkjpcblbnjuav"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1376
          • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
            C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\xxofmbpdcxjhnvgh"
            3⤵
            • Suspicious use of UnmapMainImage
            PID:1376
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1376 -s 12
              4⤵
              • Program crash
              PID:3204
          • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
            C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\azuynuaxqfcmpbulwrsz"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:2500
          • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
            C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\ktziomlyenuzahqxocfauzz"
            3⤵
              PID:3148
            • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
              C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\ktziomlyenuzahqxocfauzz"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4088
            • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
              C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\eiviktfkrky"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:2060
            • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
              C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\pcaslmqensqxowj"
              3⤵
                PID:4496
              • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\pcaslmqensqxowj"
                3⤵
                  PID:3000
                • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                  C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\pcaslmqensqxowj"
                  3⤵
                  • Accesses Microsoft Outlook accounts
                  PID:4508
                • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                  C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\regllwafbaicydxlic"
                  3⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1612
                • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                  C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\dznqg"
                  3⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:3604
                • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                  C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\otbihxgt"
                  3⤵
                  • Accesses Microsoft Outlook accounts
                  PID:3468
                • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                  C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\yvgbiqrmchd"
                  3⤵
                    PID:3600
                  • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                    C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\yvgbiqrmchd"
                    3⤵
                      PID:2308
                    • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                      C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\yvgbiqrmchd"
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:3668
                    • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                      C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\avfyhkcobkbyj"
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2316
                    • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                      C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\dxkradnqpstctnch"
                      3⤵
                      • Accesses Microsoft Outlook accounts
                      PID:2352
                    • C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe
                      C:\Users\Admin\AppData\Local\Temp\c5YXaP80M6975Ej.exe /stext "C:\Users\Admin\AppData\Local\Temp\nrqkbvxjdalpwtylptpe"
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1236
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1376 -ip 1376
                  1⤵
                    PID:816
                  • 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=3644 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
                    1⤵
                      PID:1504

                    Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          logs.dat

                          • Path C:\ProgramData\remcos\logs.dat
                          • Size 144B
                          • SHA256 f3bbb96369962b90e4700a61f54b72f9601693e8ae28474284278bfee03f64a3
                          • MD5 SHA1 SHA512

                          __PSScriptPolicyTest_z1ahmbo1.cyl.ps1

                          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z1ahmbo1.cyl.ps1
                          • Size 60B
                          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                          • MD5 SHA1 SHA512

                          bhvC251.tmp

                          • Path C:\Users\Admin\AppData\Local\Temp\bhvC251.tmp
                          • Size 6.5MB
                          • SHA256 394b5c22629674fd4e5bd278a25b36f0ae660dee62c974f7b04dc7308f85c9b7
                          • MD5 SHA1 SHA512 SSDEEP

                          chp9ECC.tmp

                          • Path C:\Users\Admin\AppData\Local\Temp\chp9ECC.tmp
                          • Size 220KB
                          • SHA256 ebd34ebd586d89a768cd16c5c773ab32bd260462047f200b995e3956a1bf0a2f
                          • MD5 SHA1 SHA512 SSDEEP

                          chp9EDD.tmp

                          • Path C:\Users\Admin\AppData\Local\Temp\chp9EDD.tmp
                          • Size 56KB
                          • SHA256 8297a7698f19bb81539a18363db100c55e357fa73f773c2b883d2c4161f6a259
                          • MD5 SHA1 SHA512 SSDEEP

                          qoopqqhwbppgfyptapkuojd

                          • Path C:\Users\Admin\AppData\Local\Temp\qoopqqhwbppgfyptapkuojd
                          • Size 4KB
                          • SHA256 7176ca3d0196ec46f178107fdb587adaef3f6ea65daa80eccd2371a515880e04
                          • MD5 SHA1 SHA512 SSDEEP

                          tmp431.tmp

                          • Path C:\Users\Admin\AppData\Local\Temp\tmp431.tmp
                          • Size 1KB
                          • SHA256 1bb7c06faff1ec7c8c6ddfc1ac79f5f0f96c8fddb4b9aa72d2e2a454f377883f
                          • MD5 SHA1 SHA512

                          memory/1376-84-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/1376-91-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/1376-93-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/1376-95-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/1612-159-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/1612-165-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/1612-172-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/1864-32-0x0000000005210000-0x0000000005232000-memory.dmp

                          memory/1864-115-0x0000000074510000-0x0000000074CC0000-memory.dmp

                          memory/1864-66-0x00000000067B0000-0x00000000067E2000-memory.dmp

                          memory/1864-20-0x00000000053B0000-0x00000000059D8000-memory.dmp

                          memory/1864-67-0x0000000070D00000-0x0000000070D4C000-memory.dmp

                          memory/1864-64-0x000000007F180000-0x000000007F190000-memory.dmp

                          memory/1864-128-0x0000000074510000-0x0000000074CC0000-memory.dmp

                          memory/1864-124-0x00000000078B0000-0x00000000078B8000-memory.dmp

                          memory/1864-122-0x00000000078C0000-0x00000000078DA000-memory.dmp

                          memory/1864-121-0x0000000007870000-0x0000000007884000-memory.dmp

                          memory/1864-120-0x0000000007780000-0x000000000778E000-memory.dmp

                          memory/1864-118-0x0000000007710000-0x0000000007721000-memory.dmp

                          memory/1864-80-0x0000000006790000-0x00000000067AE000-memory.dmp

                          memory/1864-117-0x0000000007790000-0x0000000007826000-memory.dmp

                          memory/1864-18-0x0000000004D70000-0x0000000004D80000-memory.dmp

                          memory/1864-39-0x00000000052B0000-0x0000000005316000-memory.dmp

                          memory/1864-40-0x0000000005C10000-0x0000000005C76000-memory.dmp

                          memory/1864-45-0x0000000005DE0000-0x0000000006134000-memory.dmp

                          memory/1864-113-0x0000000007580000-0x000000000758A000-memory.dmp

                          memory/1864-19-0x0000000004D70000-0x0000000004D80000-memory.dmp

                          memory/1864-48-0x0000000006240000-0x000000000625E000-memory.dmp

                          memory/1864-16-0x0000000074510000-0x0000000074CC0000-memory.dmp

                          memory/1864-49-0x00000000065C0000-0x000000000660C000-memory.dmp

                          memory/1864-83-0x0000000007430000-0x00000000074D3000-memory.dmp

                          memory/1864-97-0x0000000007510000-0x000000000752A000-memory.dmp

                          memory/1864-96-0x0000000007B60000-0x00000000081DA000-memory.dmp

                          memory/1864-15-0x0000000004C20000-0x0000000004C56000-memory.dmp

                          memory/1864-57-0x0000000004D70000-0x0000000004D80000-memory.dmp

                          memory/2060-149-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/2060-154-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/2060-174-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/2320-105-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/2320-62-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/2320-65-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/2320-69-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/2500-137-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/2500-140-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/2500-144-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/2572-125-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-129-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-61-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-176-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-60-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-23-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-58-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-22-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-56-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-55-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-53-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-52-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-51-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-107-0x0000000010000000-0x0000000010019000-memory.dmp

                          memory/2572-50-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-111-0x0000000010000000-0x0000000010019000-memory.dmp

                          memory/2572-112-0x0000000010000000-0x0000000010019000-memory.dmp

                          memory/2572-114-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-47-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-46-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-116-0x0000000010000000-0x0000000010019000-memory.dmp

                          memory/2572-33-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-30-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-31-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-26-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-27-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-123-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-132-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-130-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/2572-24-0x0000000000400000-0x0000000000482000-memory.dmp

                          memory/3468-199-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/3596-9-0x00000000073F0000-0x00000000074B0000-memory.dmp

                          memory/3596-7-0x0000000006E00000-0x0000000006E08000-memory.dmp

                          memory/3596-4-0x0000000005B20000-0x0000000005B30000-memory.dmp

                          memory/3596-5-0x0000000005910000-0x000000000591A000-memory.dmp

                          memory/3596-1-0x0000000000E20000-0x0000000000F04000-memory.dmp

                          memory/3596-6-0x0000000006DE0000-0x0000000006DF6000-memory.dmp

                          memory/3596-21-0x0000000074510000-0x0000000074CC0000-memory.dmp

                          memory/3596-2-0x0000000005E50000-0x00000000063F4000-memory.dmp

                          memory/3596-0-0x0000000074510000-0x0000000074CC0000-memory.dmp

                          memory/3596-28-0x0000000074510000-0x0000000074CC0000-memory.dmp

                          memory/3596-8-0x0000000006F30000-0x0000000006F3C000-memory.dmp

                          memory/3596-3-0x0000000005940000-0x00000000059D2000-memory.dmp

                          memory/3596-10-0x0000000009A20000-0x0000000009ABC000-memory.dmp

                          memory/3600-79-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/3600-90-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/3600-82-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/3600-94-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/3604-208-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/3604-189-0x0000000000400000-0x0000000000478000-memory.dmp

                          memory/3668-209-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/4088-143-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/4088-145-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/4088-141-0x0000000000400000-0x0000000000424000-memory.dmp

                          memory/4508-164-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/4508-155-0x0000000000400000-0x0000000000462000-memory.dmp

                          memory/4508-158-0x0000000000400000-0x0000000000462000-memory.dmp