Analysis

  • max time kernel
    147s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-08-2024 01:55

General

  • Target

    c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe

  • Size

    26KB

  • MD5

    a5a3902eda13fdecf1320b900d2e5395

  • SHA1

    3ec2b7adde1d0b5ef806f079bc0d669e32cb65ca

  • SHA256

    c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2

  • SHA512

    e40af0c9a62ba2b47801fb164a608da0829bc1c6d6b64a985af64721d51f9400527e5aef3345409ffb31152582444d524789931b5a9fcf9edacf69424fed765b

  • SSDEEP

    768:cACzsa2x1nyUuHMFSlWXokQPhbOcjC49N0b:r0b2x1nyUuHMgIXokQPgcjC49NG

Malware Config

Extracted

Family

remcos

Botnet

marshal11

C2

185.150.191.117:4609

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-O92MFO

  • 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.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 5 IoCs

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

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3428
      • C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe
        "C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe"
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:468
      • C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe
        "C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4312
        • C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe
          C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe /stext "C:\Users\Admin\AppData\Local\Temp\uuesaszkczvjbvobzedqzxpaisltsqlvmm"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3356
        • C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe
          C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe /stext "C:\Users\Admin\AppData\Local\Temp\wpjlbk"
          3⤵
            PID:536
          • C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe
            C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe /stext "C:\Users\Admin\AppData\Local\Temp\wpjlbk"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:2216
          • C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe
            C:\Users\Admin\AppData\Local\Temp\c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2.exe /stext "C:\Users\Admin\AppData\Local\Temp\hrxvbdvgm"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:540
      • 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 --field-trial-handle=4056,i,5469445176230119590,7931734017267321834,262144 --variations-seed-version --mojo-platform-channel-handle=4288 /prefetch:8
        1⤵
          PID:3336

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          4KB

          MD5

          cda83eba5a004554ccdc061fd3df499c

          SHA1

          58ff2ecb9d47be10335e104896c87c62dc328523

          SHA256

          e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

          SHA512

          f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

        • memory/468-0-0x000000007476E000-0x000000007476F000-memory.dmp

          Filesize

          4KB

        • memory/468-1-0x0000000000E10000-0x0000000000E1E000-memory.dmp

          Filesize

          56KB

        • memory/468-2-0x0000000074760000-0x0000000074F10000-memory.dmp

          Filesize

          7.7MB

        • memory/468-3-0x0000000006A80000-0x0000000006B9E000-memory.dmp

          Filesize

          1.1MB

        • memory/468-17-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-19-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-63-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-67-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-65-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-61-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-59-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-57-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-55-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-53-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-51-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-49-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-47-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-45-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-43-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-41-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-39-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-38-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-35-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-33-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-31-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-29-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-27-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-25-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-23-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-21-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-15-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-13-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-11-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-9-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-7-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-5-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-4-0x0000000006A80000-0x0000000006B98000-memory.dmp

          Filesize

          1.1MB

        • memory/468-1078-0x0000000074760000-0x0000000074F10000-memory.dmp

          Filesize

          7.7MB

        • memory/468-1079-0x0000000006DA0000-0x0000000006E38000-memory.dmp

          Filesize

          608KB

        • memory/468-1080-0x0000000006E70000-0x0000000006EBC000-memory.dmp

          Filesize

          304KB

        • memory/468-1081-0x0000000008600000-0x0000000008BA4000-memory.dmp

          Filesize

          5.6MB

        • memory/468-1082-0x0000000008090000-0x00000000080E4000-memory.dmp

          Filesize

          336KB

        • memory/468-1086-0x0000000074760000-0x0000000074F10000-memory.dmp

          Filesize

          7.7MB

        • memory/468-1088-0x0000000074760000-0x0000000074F10000-memory.dmp

          Filesize

          7.7MB

        • memory/468-1089-0x0000000074760000-0x0000000074F10000-memory.dmp

          Filesize

          7.7MB

        • memory/468-1090-0x000000007476E000-0x000000007476F000-memory.dmp

          Filesize

          4KB

        • memory/468-1097-0x0000000074760000-0x0000000074F10000-memory.dmp

          Filesize

          7.7MB

        • memory/540-1116-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/540-1120-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2216-1119-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2216-1115-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/3356-1117-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3356-1131-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4312-1096-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/4312-1141-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB