Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    08/09/2024, 04:26

General

  • Target
    B89BA7DD8D61CEDBACAA00AABEF600B7.exe
  • Size 1.7MB
  • Sample240908-e2h4qayare
  • SHA256 e1f193deaa71595b668320d294635988f66c0f1ab1ab218e08fe3ae87fe10838
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 45.143.200.21:3389

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-EFBISE

  • 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
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 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 12 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1280
      • C:\Users\Admin\AppData\Local\Temp\B89BA7DD8D61CEDBACAA00AABEF600B7.exe
        "C:\Users\Admin\AppData\Local\Temp\B89BA7DD8D61CEDBACAA00AABEF600B7.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3032
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k move Early Early.cmd & Early.cmd & exit
          3⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2656
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2864
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa.exe opssvc.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2812
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2580
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "avastui.exe avgui.exe bdservicehost.exe ekrn.exe nswscsvc.exe sophoshealth.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2524
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 341653
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2572
          • C:\Windows\SysWOW64\findstr.exe
            findstr /V "hazardsfilenamepartiallychild" Championship
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2588
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c copy /b ..\Dawn + ..\Blog + ..\Featured + ..\Bikini + ..\Banks + ..\Provisions + ..\Champagne + ..\Undertaken + ..\Observed + ..\Centres + ..\Occurring + ..\Announcement + ..\Spine t
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2984
          • C:\Users\Admin\AppData\Local\Temp\341653\Hunger.pif
            Hunger.pif t
            4⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:332
          • C:\Windows\SysWOW64\choice.exe
            choice /d y /t 5
            4⤵
            • System Location Discovery: System Language Discovery
            PID:1064
      • C:\Windows\SysWOW64\cmd.exe
        cmd /k echo [InternetShortcut] > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ElephantHub.url" & echo URL="C:\Users\Admin\AppData\Local\TradeSecure Dynamics\ElephantHub.js" >> "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ElephantHub.url" & exit
        2⤵
        • Drops startup file
        • System Location Discovery: System Language Discovery
        PID:892

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          t

          • Path C:\Users\Admin\AppData\Local\Temp\341653\t
          • Size 920KB
          • SHA256 9ce1c9ef20feb95d8cbae169550a6a538f0d9935c1d2362f5bad3896c7b38e9f
          • MD5 SHA1 SHA512 SSDEEP

          Announcement

          • Path C:\Users\Admin\AppData\Local\Temp\Announcement
          • Size 57KB
          • SHA256 803350809ac7cd3a1363f821e599468aae3e2025a56fbed9cf00cd1452172e25
          • MD5 SHA1 SHA512 SSDEEP

          Banks

          • Path C:\Users\Admin\AppData\Local\Temp\Banks
          • Size 82KB
          • SHA256 7cf4ea7974c2395b8ce7c3329b47821f5d57d2a0934e99e433b3eab15ae61a5a
          • MD5 SHA1 SHA512 SSDEEP

          Bikini

          • Path C:\Users\Admin\AppData\Local\Temp\Bikini
          • Size 50KB
          • SHA256 ef891f3adf76369df74ff0ec3f6d39d95000fda02d9925898a2edc81f44d222b
          • MD5 SHA1 SHA512 SSDEEP

          Blog

          • Path C:\Users\Admin\AppData\Local\Temp\Blog
          • Size 90KB
          • SHA256 79ac2066ad3058df43125a29308f90e49ee6c367cb71e7d53276effbd4678b6a
          • MD5 SHA1 SHA512 SSDEEP

          Centres

          • Path C:\Users\Admin\AppData\Local\Temp\Centres
          • Size 94KB
          • SHA256 cc3319935a9e71266a6ecf6d50763e3ca226d516393ce41b7e2c72825eb01d81
          • MD5 SHA1 SHA512 SSDEEP

          Champagne

          • Path C:\Users\Admin\AppData\Local\Temp\Champagne
          • Size 65KB
          • SHA256 3846d814c18fec2adb873968613d8a6f3551b4a668f718b07d94afe998b59391
          • MD5 SHA1 SHA512 SSDEEP

          Championship

          • Path C:\Users\Admin\AppData\Local\Temp\Championship
          • Size 872B
          • SHA256 3bbee4e8a83d2a97a03ad78fa2e325b6973cbb4dd74df1dd3da4efbd9432e9a5
          • MD5 SHA1 SHA512

          Clause

          • Path C:\Users\Admin\AppData\Local\Temp\Clause
          • Size 871KB
          • SHA256 2cde7300091274a9b56d7d1d1a007d7d28069de6e18a306012e8343ca61cc969
          • MD5 SHA1 SHA512 SSDEEP

          Dawn

          • Path C:\Users\Admin\AppData\Local\Temp\Dawn
          • Size 63KB
          • SHA256 01199308c8a481090a57df2031512fc2cfd81c004f017972225aabf29a53a70b
          • MD5 SHA1 SHA512 SSDEEP

          Early

          • Path C:\Users\Admin\AppData\Local\Temp\Early
          • Size 11KB
          • SHA256 6cd36aaf3eec734be45b9886ed26f53f18cd33d4c179042e26d176d99c35bedd
          • MD5 SHA1 SHA512 SSDEEP

          Featured

          • Path C:\Users\Admin\AppData\Local\Temp\Featured
          • Size 96KB
          • SHA256 d9c28233273fbe75373b0d39a8241acdfdf47fdb721a11dc3dfd1b773839ff85
          • MD5 SHA1 SHA512 SSDEEP

          Observed

          • Path C:\Users\Admin\AppData\Local\Temp\Observed
          • Size 92KB
          • SHA256 6032859a9b7c4105c4b3419bcd156559aa988a123ff144d9f8986155a1f0e6f5
          • MD5 SHA1 SHA512 SSDEEP

          Occurring

          • Path C:\Users\Admin\AppData\Local\Temp\Occurring
          • Size 61KB
          • SHA256 ebac5bf9ebb8993ed785e40c627e513fcb1e5b7ba9b2d21182215e6229172642
          • MD5 SHA1 SHA512 SSDEEP

          Provisions

          • Path C:\Users\Admin\AppData\Local\Temp\Provisions
          • Size 96KB
          • SHA256 cd69b087fb22b31daf38c9e85b1fc2509d7f8233883a4b09a57620112bc30b7d
          • MD5 SHA1 SHA512 SSDEEP

          Spine

          • Path C:\Users\Admin\AppData\Local\Temp\Spine
          • Size 10KB
          • SHA256 d9fc4d46f98794486cbc9f981bd4147f73c72cd5dc3ff5c5c866351222ac8381
          • MD5 SHA1 SHA512 SSDEEP

          Undertaken

          • Path C:\Users\Admin\AppData\Local\Temp\Undertaken
          • Size 64KB
          • SHA256 a7a8c867a2356fc2004618acbc185cad12fea3d81cc0a13fb880d27a19e6d0d2
          • MD5 SHA1 SHA512 SSDEEP

          Hunger.pif

          • Path \Users\Admin\AppData\Local\Temp\341653\Hunger.pif
          • Size 872KB
          • SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
          • MD5 SHA1 SHA512 SSDEEP

          memory/332-49-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-58-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-48-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-54-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-53-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-52-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-51-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-50-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-55-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-56-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-57-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-47-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-59-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-62-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-63-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-64-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-65-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-66-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-67-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-69-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-68-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-70-0x0000000003A80000-0x0000000003B02000-memory.dmp

          memory/332-71-0x0000000003A80000-0x0000000003B02000-memory.dmp