Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    31/03/2026, 23:26

General

  • Target
    transaction report.exe
  • Size 267KB
  • Sample260331-3es76sh13s
  • SHA256 bfd37bd93dd704927aa58505d0d8215b2e1dd8dc6e69cde508531f1df6cf2d17
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • remcos

Version
  • 7.2.1 Pro

Botnet
  • RemoteHost

C2
  • 172.245.4.226:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-8PO6T1

  • 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.

  • Remcos family
  • Detected Nirsoft tools 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • NSIS installer 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\transaction report.exe
    "C:\Users\Admin\AppData\Local\Temp\transaction report.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4276
    • C:\Users\Admin\AppData\Local\Temp\transaction report.exe
      "C:\Users\Admin\AppData\Local\Temp\transaction report.exe"
      2⤵
        PID:4848
      • C:\Users\Admin\AppData\Local\Temp\transaction report.exe
        "C:\Users\Admin\AppData\Local\Temp\transaction report.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3436
        • C:\Users\Admin\AppData\Local\Temp\transaction report.exe
          "C:\Users\Admin\AppData\Local\Temp\transaction report.exe"
          3⤵
            PID:5992
          • C:\ProgramData\Remcos\remcos.exe
            "C:\ProgramData\Remcos\remcos.exe"
            3⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Drops file in Program Files directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:4532
            • C:\ProgramData\Remcos\remcos.exe
              "C:\ProgramData\Remcos\remcos.exe"
              4⤵
              • Executes dropped EXE
              PID:668
            • C:\ProgramData\Remcos\remcos.exe
              "C:\ProgramData\Remcos\remcos.exe"
              4⤵
              • Loads dropped DLL
              • Adds Run key to start application
              • Suspicious use of NtCreateThreadExHideFromDebugger
              • Suspicious use of NtSetInformationThreadHideFromDebugger
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:5808
              • C:\ProgramData\Remcos\remcos.exe
                "C:\ProgramData\Remcos\remcos.exe"
                5⤵
                • Executes dropped EXE
                PID:1452
              • C:\Windows\SysWOW64\userinit.exe
                /stext "C:\Users\Admin\AppData\Local\Temp\eizamk"
                5⤵
                  PID:3076
                • C:\Windows\SysWOW64\userinit.exe
                  /stext "C:\Users\Admin\AppData\Local\Temp\eizamk"
                  5⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4960
                • C:\Windows\SysWOW64\userinit.exe
                  /stext "C:\Users\Admin\AppData\Local\Temp\ocetfdggy"
                  5⤵
                    PID:908
                  • C:\Windows\SysWOW64\userinit.exe
                    /stext "C:\Users\Admin\AppData\Local\Temp\ocetfdggy"
                    5⤵
                    • Accesses Microsoft Outlook accounts
                    • System Location Discovery: System Language Discovery
                    PID:712
                  • C:\Windows\SysWOW64\userinit.exe
                    /stext "C:\Users\Admin\AppData\Local\Temp\zeklfvriuwgnl"
                    5⤵
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:112

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                remcos.exe

                • Path C:\ProgramData\Remcos\remcos.exe
                • Size 267KB
                • SHA256 bfd37bd93dd704927aa58505d0d8215b2e1dd8dc6e69cde508531f1df6cf2d17
                • MD5 SHA1 SHA512 SSDEEP TLSH

                05DDC6AA91765AACACDB0A5F96DF8199

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\05DDC6AA91765AACACDB0A5F96DF8199
                • Size 993B
                • SHA256 a6f8f5d4ffd1e825ffce9a55861f16aa4dbe67871b1696b976194dd8be1fdf29
                • MD5 SHA1 SHA512 TLSH

                24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
                • Size 1KB
                • SHA256 804ceb8a68cc5284375e653b6ae715d8edc41cde7d4c4a43a0678ebe6c7c2c37
                • MD5 SHA1 SHA512 TLSH

                4FA45AE1010E09657982D8D28B3BD38E_5EC5F15E90CE3367DAA957D66231D354

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\4FA45AE1010E09657982D8D28B3BD38E_5EC5F15E90CE3367DAA957D66231D354
                • Size 472B
                • SHA256 6ef759738539e38b5e08b325e45f75f42f1fca463f8da5181bace04344a06e3e
                • MD5 SHA1 SHA512 TLSH

                B3513D73A177A2707D910183759B389B_550D7637D8A8DBA8382B5E4B505F43EE

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B3513D73A177A2707D910183759B389B_550D7637D8A8DBA8382B5E4B505F43EE
                • Size 472B
                • SHA256 d5f488225e7e0a8993ba549d242ed106eac4869415f7de7d85f95729162fe1f9
                • MD5 SHA1 SHA512 TLSH

                05DDC6AA91765AACACDB0A5F96DF8199

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\05DDC6AA91765AACACDB0A5F96DF8199
                • Size 170B
                • SHA256 58dacbaf8fb345760643bf8d1fddcd34cdb9d4a632255da489d2e55bba18108e
                • MD5 SHA1 SHA512 TLSH

                24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
                • Size 410B
                • SHA256 cb2050ac36f222ea0021a270296d5d9e1a7e52203835bcf4e21e01bda0ce9461
                • MD5 SHA1 SHA512 TLSH

                4FA45AE1010E09657982D8D28B3BD38E_5EC5F15E90CE3367DAA957D66231D354

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\4FA45AE1010E09657982D8D28B3BD38E_5EC5F15E90CE3367DAA957D66231D354
                • Size 402B
                • SHA256 be63cf8025023716a471f035a6c9e18c06e590d3a675bf56048c56f695a00124
                • MD5 SHA1 SHA512 TLSH

                B3513D73A177A2707D910183759B389B_550D7637D8A8DBA8382B5E4B505F43EE

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B3513D73A177A2707D910183759B389B_550D7637D8A8DBA8382B5E4B505F43EE
                • Size 398B
                • SHA256 0f711d4dc493a5ad2bb2a20fa74e724a032d8f22b82aa73586f695ffa6cfeff0
                • MD5 SHA1 SHA512 TLSH

                eizamk

                • Path C:\Users\Admin\AppData\Local\Temp\eizamk
                • Size 2B
                • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
                • MD5 SHA1 SHA512

                nsk2BC1.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nsk2BC1.tmp
                • Size 52B
                • SHA256 a9493973dd293917f3ebb932ab255f8cac40121707548de100d5969956bb1266
                • MD5 SHA1 SHA512 TLSH

                nsk2C11.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nsk2C11.tmp
                • Size 56B
                • SHA256 127d261f78aa09a513d6d9d703da0157e1bc3fed4cda5686cfec855fb87f7bb7
                • MD5 SHA1 SHA512 TLSH

                nso6800.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nso6800.tmp
                • Size 36B
                • SHA256 54612b8b7d7976541e093f32ed341e57dcb7a76496e83f8f06063bdbdf7123f6
                • MD5 SHA1 SHA512

                nso6850.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nso6850.tmp
                • Size 15B
                • SHA256 384e1fc0d130aa5cbfa9077f6de89b555e096afb67cd2dd827933b992549e69c
                • MD5 SHA1 SHA512

                nso6850.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nso6850.tmp
                • Size 25B
                • SHA256 f0cacd1092fb6045718b0220cc7b9f5ed18c3e4d6013b4aecb9f2bd95299f017
                • MD5 SHA1 SHA512

                nsp2B90.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nsp2B90.tmp
                • Size 45B
                • SHA256 8d563467c54bb057b01f2366722a14e9416510bf4955afa746cbeb2f221312fc
                • MD5 SHA1 SHA512

                nsp2B90.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nsp2B90.tmp
                • Size 74B
                • SHA256 d3c781a1855c8a70f5aca88d9e2c92afffa80541334731f62caa9494aa8a0c36
                • MD5 SHA1 SHA512 TLSH

                nsp2BE1.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nsp2BE1.tmp
                • Size 60B
                • SHA256 69d40fe62033f14efeb9c4a1c230ae21db2ca411a084b0a04be14943f5e21769
                • MD5 SHA1 SHA512 TLSH

                nsp2BE1.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nsp2BE1.tmp
                • Size 42B
                • SHA256 f18b2423fc4db496485fc6527134baf80cbd41c2377748a0ded5d7544c0c7cd6
                • MD5 SHA1 SHA512

                nsp2BE1.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nsp2BE1.tmp
                • Size 53B
                • SHA256 491cbc175c61a404c85ce3d535ddd612af7a531bcf82f926d5749e6717b50f09
                • MD5 SHA1 SHA512 TLSH

                nst6820.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nst6820.tmp
                • Size 44B
                • SHA256 474fb07da9ddb43749386efc3e7f41741b230bee16b727da6dfad58763375f0e
                • MD5 SHA1 SHA512

                nst6820.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nst6820.tmp
                • Size 36B
                • SHA256 b99bdb970c67e8e392cd72bca7972fd83cc0614b5e7c626975236366ad1d343e
                • MD5 SHA1 SHA512

                System.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nsv2BB1.tmp\System.dll
                • Size 11KB
                • SHA256 6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e
                • MD5 SHA1 SHA512 SSDEEP TLSH

                nsv2C9F.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\nsv2C9F.tmp
                • Size 29B
                • SHA256 1cd17ebc8f026d74e357291a799786fd75557cfb6752ab682fb941ae1e91dc2a
                • MD5 SHA1 SHA512

                Essayet148.bue

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\planlgningen\betragte\Niccolo198\Essayet148.bue
                • Size 29KB
                • SHA256 0cf544317fb533537ac7e3e1249a70a4d30433b7cae3b2d591106e0353f64d25
                • MD5 SHA1 SHA512 SSDEEP TLSH

                Pre

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\planlgningen\betragte\Niccolo198\Pre
                • Size 61KB
                • SHA256 4c238920ccf51a28c246f635585d9fca09a91f210939b5561d71a7a1c085ad86
                • MD5 SHA1 SHA512 SSDEEP TLSH

                Ventepositions

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\planlgningen\betragte\Niccolo198\Ventepositions
                • Size 215KB
                • SHA256 e40f302de4ecaafce67aa4b725ee09d288095a199cc0dcd22b2bc4518cfc4ab2
                • MD5 SHA1 SHA512 SSDEEP TLSH

                agons.pro

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\planlgningen\betragte\Niccolo198\agons.pro
                • Size 121B
                • SHA256 aa0d01d8c1f447e6b68c52a559940335ed0e36ab95326aa7b3bab6e451568e3e
                • MD5 SHA1 SHA512

                discrepate.out

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\planlgningen\betragte\Niccolo198\discrepate.out
                • Size 1KB
                • SHA256 5d036a00588c5b7bef7479653e823ff4912b9621d19d611fa086ab09617f897e
                • MD5 SHA1 SHA512 TLSH

                haandvrksbagerens.tek

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\planlgningen\betragte\Niccolo198\haandvrksbagerens.tek
                • Size 26KB
                • SHA256 0b99322c14ebbf72ade7b7fd12b76a2984c871202986d3d14a849427f46fcace
                • MD5 SHA1 SHA512 SSDEEP TLSH

                subtraktionsmaskinens.pak

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\planlgningen\betragte\Niccolo198\subtraktionsmaskinens.pak
                • Size 47KB
                • SHA256 919116dd5d6d51974f443b9ac8a57886d5f1e8b01499d941f31fa3b3c022932b
                • MD5 SHA1 SHA512 SSDEEP TLSH

                tilbagevistes.cat

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\planlgningen\betragte\Niccolo198\tilbagevistes.cat
                • Size 14KB
                • SHA256 5956133656faf7c9e1c19910416f1cfaa7ff0f5d0d6c4dd3f51d90c43ec11629
                • MD5 SHA1 SHA512 SSDEEP TLSH

                memory/112-1189-0x0000000001060000-0x00000000010DA000-memory.dmp

                memory/112-1190-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/112-1187-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/712-1192-0x0000000001200000-0x000000000127A000-memory.dmp

                memory/712-1193-0x0000000000400000-0x000000000045E000-memory.dmp

                memory/908-1183-0x00000000003A0000-0x00000000003FE000-memory.dmp

                memory/3076-1205-0x0000000000640000-0x00000000006BE000-memory.dmp

                memory/3076-1181-0x0000000000640000-0x00000000006BE000-memory.dmp

                memory/3436-562-0x0000000077128000-0x0000000077129000-memory.dmp

                memory/3436-563-0x00000000771BB000-0x00000000771BC000-memory.dmp

                memory/3436-564-0x000000007713B000-0x000000007713C000-memory.dmp

                memory/3436-579-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/3436-584-0x0000000077091000-0x00000000771B3000-memory.dmp

                memory/3436-593-0x0000000036170000-0x000000003626E000-memory.dmp

                memory/3436-592-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/4276-561-0x0000000073E34000-0x0000000073E35000-memory.dmp

                memory/4960-1196-0x00000000013C0000-0x000000000143A000-memory.dmp

                memory/4960-1195-0x0000000000400000-0x000000000047E000-memory.dmp

                memory/4960-1184-0x0000000000400000-0x000000000047E000-memory.dmp

                memory/5808-1211-0x0000000036140000-0x000000003623E000-memory.dmp

                memory/5808-1210-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1201-0x0000000036D30000-0x0000000036D49000-memory.dmp

                memory/5808-1204-0x0000000036140000-0x000000003623E000-memory.dmp

                memory/5808-1203-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1176-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1206-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1208-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1198-0x0000000036D30000-0x0000000036D49000-memory.dmp

                memory/5808-1202-0x0000000036D30000-0x0000000036D49000-memory.dmp

                memory/5808-1212-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1215-0x0000000036140000-0x000000003623E000-memory.dmp

                memory/5808-1214-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1216-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1218-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1220-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1222-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1224-0x0000000000450000-0x0000000001767000-memory.dmp

                memory/5808-1226-0x0000000000450000-0x0000000001767000-memory.dmp