Resubmissions

30-09-2024 11:56

240930-n31jtsyalh 10

Analysis

  • max time kernel
    150s
  • 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
    30-09-2024 11:56

General

  • Target

    SecuriteInfo.com.Win32.InjectorX-gen.20521.11680.exe

  • Size

    967KB

  • MD5

    450228d72f9f726b645c55bbbc6db905

  • SHA1

    b26075c51a4681f2ff7407188f5e9480545a7aca

  • SHA256

    9124d7696d2b94e7959933c3f7a8f68e61a5ce29cd5934a4d0379c2193b126be

  • SHA512

    4795d090447d237cbe1a044ffe78e8cd0c9be358df778673b4713eab2c324056a7701d22b827b95b2413845089fa71ac81a4f47cc8bcdbabad34845e64b4e090

  • SSDEEP

    12288:5Ly0W0exb+S7/6eALmQXhts30QmskXnnAEkINz3WSVgl:5Ly05wCmQXw30Ek3AgNz3Sl

Malware Config

Extracted

Family

remcos

Botnet

Rem_doc2

C2

107.173.4.16:2404

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-DSGECX

  • 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.

  • Detected Nirsoft tools 7 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 2 IoCs

    Password recovery tool for various web browsers

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 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 NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.InjectorX-gen.20521.11680.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.InjectorX-gen.20521.11680.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle hidden "$krjning=Get-Content -Raw 'C:\Users\Admin\AppData\Roaming\intercessionate\Favourablies117\sulfonylurea\Aerognosy.Res';$Lukewarmly95=$krjning.SubString(5322,3);.$Lukewarmly95($krjning)"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5024
      • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe
        "C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe"
        3⤵
        • Checks computer location settings
        • Loads dropped DLL
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:3280
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Chivey57" /t REG_EXPAND_SZ /d "%Misbehavers% -windowstyle 1 $Frligheden=(gp -Path 'HKCU:\Software\Roscoelite\').Aftvttedes;%Misbehavers% ($Frligheden)"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4672
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Chivey57" /t REG_EXPAND_SZ /d "%Misbehavers% -windowstyle 1 $Frligheden=(gp -Path 'HKCU:\Software\Roscoelite\').Aftvttedes;%Misbehavers% ($Frligheden)"
            5⤵
            • Adds Run key to start application
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:4836
        • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe
          C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe /stext "C:\Users\Admin\AppData\Local\Temp\rtrkwajpmzlhdybzbotrltzr"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2964
        • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe
          C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe /stext "C:\Users\Admin\AppData\Local\Temp\unwdxsbizhdmffpdszgtwgmimjj"
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:3268
        • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe
          C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe /stext "C:\Users\Admin\AppData\Local\Temp\epcnxlmknpvrpllpbktnzlgrmqtgfff"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3044
  • 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=1040,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=4356 /prefetch:8
    1⤵
      PID:4744

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe

      Filesize

      967KB

      MD5

      450228d72f9f726b645c55bbbc6db905

      SHA1

      b26075c51a4681f2ff7407188f5e9480545a7aca

      SHA256

      9124d7696d2b94e7959933c3f7a8f68e61a5ce29cd5934a4d0379c2193b126be

      SHA512

      4795d090447d237cbe1a044ffe78e8cd0c9be358df778673b4713eab2c324056a7701d22b827b95b2413845089fa71ac81a4f47cc8bcdbabad34845e64b4e090

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_n4y4bre4.v2c.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      4KB

      MD5

      cda83eba5a004554ccdc061fd3df499c

      SHA1

      58ff2ecb9d47be10335e104896c87c62dc328523

      SHA256

      e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

      SHA512

      f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

    • C:\Users\Admin\AppData\Roaming\intercessionate\Favourablies117\sulfonylurea\Aerognosy.Res

      Filesize

      52KB

      MD5

      552ed0904239d64db1895620b38dc799

      SHA1

      8a6a6c6efd31b04c716cde1783b45783f2843e20

      SHA256

      d4d98fdbe306d61986bed62340744554e0a288c5a804ed5c924f66885cbf3514

      SHA512

      21f283ac39223437470036ec08eb01bf40c4a0c45ea5b94bb4d902cf66923db4d14641ce68370d240ab2b213527552dfde13eb1ff4b21a0bbf0c1ee6aed7ade7

    • C:\Users\Admin\AppData\Roaming\intercessionate\Favourablies117\sulfonylurea\Valvulate.Cru

      Filesize

      349KB

      MD5

      14c1d52f24f29389597b36dcfc90b95a

      SHA1

      a2578253f17b5f0ef989965dcb74aebb60763b2d

      SHA256

      f9b744d0223efe3c01c94d526881a95523c2f5e457f03774dd1d661944e60852

      SHA512

      4dde50c0b37e51b944a7a61866730e53e96773e28c35260dcae1eb38805251c3ba8e72c5d33ae2cb8d7486a4d3c6c180ec4560e3c20a6c535ca3a70aac158710

    • memory/2964-77-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2964-89-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2964-84-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2964-109-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3044-92-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3044-85-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3044-97-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3044-88-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3044-87-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3268-100-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3268-94-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3268-83-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3268-90-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3280-124-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-122-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-115-0x0000000023370000-0x0000000023389000-memory.dmp

      Filesize

      100KB

    • memory/3280-116-0x0000000023370000-0x0000000023389000-memory.dmp

      Filesize

      100KB

    • memory/3280-123-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-121-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-112-0x0000000023370000-0x0000000023389000-memory.dmp

      Filesize

      100KB

    • memory/3280-118-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-120-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-119-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-117-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-125-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-71-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/3280-126-0x00000000004D0000-0x0000000001724000-memory.dmp

      Filesize

      18.3MB

    • memory/5024-32-0x0000000007A30000-0x0000000007A62000-memory.dmp

      Filesize

      200KB

    • memory/5024-47-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-59-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-60-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-61-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-62-0x0000000008EF0000-0x000000000DE45000-memory.dmp

      Filesize

      79.3MB

    • memory/5024-63-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-65-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-66-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-68-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-56-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-70-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-55-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-54-0x000000007350E000-0x000000007350F000-memory.dmp

      Filesize

      4KB

    • memory/5024-52-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-51-0x0000000008330000-0x0000000008354000-memory.dmp

      Filesize

      144KB

    • memory/5024-50-0x0000000007C10000-0x0000000007C3A000-memory.dmp

      Filesize

      168KB

    • memory/5024-49-0x0000000007BC0000-0x0000000007BCA000-memory.dmp

      Filesize

      40KB

    • memory/5024-48-0x0000000007AA0000-0x0000000007B43000-memory.dmp

      Filesize

      652KB

    • memory/5024-58-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-46-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-45-0x0000000007A70000-0x0000000007A8E000-memory.dmp

      Filesize

      120KB

    • memory/5024-35-0x000000006FD60000-0x00000000700B4000-memory.dmp

      Filesize

      3.3MB

    • memory/5024-34-0x000000006F990000-0x000000006F9DC000-memory.dmp

      Filesize

      304KB

    • memory/5024-7-0x000000007350E000-0x000000007350F000-memory.dmp

      Filesize

      4KB

    • memory/5024-33-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-31-0x0000000008870000-0x0000000008EEA000-memory.dmp

      Filesize

      6.5MB

    • memory/5024-29-0x0000000007C40000-0x00000000081E4000-memory.dmp

      Filesize

      5.6MB

    • memory/5024-28-0x0000000006B40000-0x0000000006B62000-memory.dmp

      Filesize

      136KB

    • memory/5024-27-0x0000000006B10000-0x0000000006B2A000-memory.dmp

      Filesize

      104KB

    • memory/5024-26-0x0000000007590000-0x0000000007626000-memory.dmp

      Filesize

      600KB

    • memory/5024-25-0x0000000006620000-0x000000000666C000-memory.dmp

      Filesize

      304KB

    • memory/5024-24-0x00000000065E0000-0x00000000065FE000-memory.dmp

      Filesize

      120KB

    • memory/5024-23-0x0000000006030000-0x0000000006384000-memory.dmp

      Filesize

      3.3MB

    • memory/5024-13-0x0000000005FC0000-0x0000000006026000-memory.dmp

      Filesize

      408KB

    • memory/5024-12-0x0000000005EE0000-0x0000000005F46000-memory.dmp

      Filesize

      408KB

    • memory/5024-11-0x0000000005650000-0x0000000005672000-memory.dmp

      Filesize

      136KB

    • memory/5024-10-0x00000000056C0000-0x0000000005CE8000-memory.dmp

      Filesize

      6.2MB

    • memory/5024-9-0x0000000073500000-0x0000000073CB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5024-8-0x0000000005050000-0x0000000005086000-memory.dmp

      Filesize

      216KB