Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/07/2024, 15:14

General

  • Target
    f3241ace2c07ddccf58c09add567265ea2ad9ff820bf696db21cc8f3642c2779.exe
  • Size 1.1MB
  • Sample240731-sma2fsvard
  • SHA256 f3241ace2c07ddccf58c09add567265ea2ad9ff820bf696db21cc8f3642c2779
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 212.162.149.80:2404

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-WVQ56B

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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 3 IoCs

    Password recovery tool for various web browsers

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3241ace2c07ddccf58c09add567265ea2ad9ff820bf696db21cc8f3642c2779.exe
    "C:\Users\Admin\AppData\Local\Temp\f3241ace2c07ddccf58c09add567265ea2ad9ff820bf696db21cc8f3642c2779.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle minimized " $Alkyders=Get-Content 'C:\Users\Admin\AppData\Local\Temp\Antikrists\skvaldrendes\lautitious\Drearness.Ver';$Juhls=$Alkyders.SubString(51427,3);.$Juhls($Alkyders)"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2488
      • C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe
        "C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe"
        3⤵
        • 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 SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3076
        • C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe
          C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe /stext "C:\Users\Admin\AppData\Local\Temp\ttwmbfxupdlxlqhukndbqrqcmeadhhx"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:388
        • C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe
          C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe /stext "C:\Users\Admin\AppData\Local\Temp\dnjfbxiwdldcnwvytxyvtvllukkmasoelm"
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:4488
        • C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe
          C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe /stext "C:\Users\Admin\AppData\Local\Temp\nppxcq"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1596
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle minimized " $Alkyders=Get-Content 'C:\Users\Admin\AppData\Local\Temp\Antikrists\skvaldrendes\lautitious\Drearness.Ver';$Juhls=$Alkyders.SubString(51427,3);.$Juhls($Alkyders)"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1808
      • C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe
        "C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe"
        3⤵
        • Loads dropped DLL
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        PID:2096

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        logs.dat

        • Path C:\ProgramData\remcos\logs.dat
        • Size 144B
        • SHA256 013d4e96f766509f18f0d6b089fb5779d2f52208ccaa4bcc05ab44c47bb040d7
        • MD5 SHA1 SHA512

        Drearness.Ver

        • Path C:\Users\Admin\AppData\Local\Temp\Antikrists\skvaldrendes\lautitious\Drearness.Ver
        • Size 50KB
        • SHA256 45d005d41482e3a06e5ccce55ecdcd326a4ba071d854a73082aeefbbabe66e60
        • MD5 SHA1 SHA512 SSDEEP

        Isoyohimbine.Aor118

        • Path C:\Users\Admin\AppData\Local\Temp\Antikrists\skvaldrendes\lautitious\Isoyohimbine.Aor118
        • Size 336KB
        • SHA256 fe93df3c6573aca1c3346d7b1dd5fb1c2d7a87e26875579aefe506b4c9778842
        • MD5 SHA1 SHA512 SSDEEP

        Heathertoes.exe

        • Path C:\Users\Admin\AppData\Local\Temp\Heathertoes.exe
        • Size 1.1MB
        • SHA256 f3241ace2c07ddccf58c09add567265ea2ad9ff820bf696db21cc8f3642c2779
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_b3knbm0q.sz4.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b3knbm0q.sz4.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        ttwmbfxupdlxlqhukndbqrqcmeadhhx

        • Path C:\Users\Admin\AppData\Local\Temp\ttwmbfxupdlxlqhukndbqrqcmeadhhx
        • Size 4KB
        • SHA256 7ba191936c431616d66459f6985e176baa85389e91b5bef3731aa932b0096b1b
        • MD5 SHA1 SHA512 SSDEEP

        memory/388-86-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/388-66-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/388-77-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/388-73-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/388-92-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/1596-76-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/1596-87-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/1596-74-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/1596-71-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/1808-28-0x00000000741B0000-0x0000000074960000-memory.dmp

        memory/1808-62-0x00000000741B0000-0x0000000074960000-memory.dmp

        memory/1808-29-0x00000000741B0000-0x0000000074960000-memory.dmp

        memory/1808-47-0x0000000008A50000-0x0000000009407000-memory.dmp

        memory/1808-27-0x00000000741B0000-0x0000000074960000-memory.dmp

        memory/2096-61-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/2488-12-0x00000000052C0000-0x00000000052E2000-memory.dmp

        memory/2488-42-0x0000000007970000-0x0000000007F14000-memory.dmp

        memory/2488-40-0x00000000067A0000-0x00000000067BA000-memory.dmp

        memory/2488-44-0x00000000085A0000-0x0000000008C1A000-memory.dmp

        memory/2488-41-0x00000000067F0000-0x0000000006812000-memory.dmp

        memory/2488-63-0x00000000741B0000-0x0000000074960000-memory.dmp

        memory/2488-7-0x00000000741BE000-0x00000000741BF000-memory.dmp

        memory/2488-39-0x0000000007320000-0x00000000073B6000-memory.dmp

        memory/2488-8-0x0000000002C90000-0x0000000002CC6000-memory.dmp

        memory/2488-9-0x00000000053B0000-0x00000000059D8000-memory.dmp

        memory/2488-26-0x0000000006320000-0x000000000636C000-memory.dmp

        memory/2488-25-0x0000000006290000-0x00000000062AE000-memory.dmp

        memory/2488-10-0x00000000741B0000-0x0000000074960000-memory.dmp

        memory/2488-11-0x00000000741B0000-0x0000000074960000-memory.dmp

        memory/2488-20-0x0000000005C70000-0x0000000005FC4000-memory.dmp

        memory/2488-13-0x0000000005B90000-0x0000000005BF6000-memory.dmp

        memory/2488-14-0x0000000005C00000-0x0000000005C66000-memory.dmp

        memory/3076-107-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-115-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-134-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-131-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-95-0x000000001EBA0000-0x000000001EBB9000-memory.dmp

        memory/3076-99-0x000000001EBA0000-0x000000001EBB9000-memory.dmp

        memory/3076-98-0x000000001EBA0000-0x000000001EBB9000-memory.dmp

        memory/3076-101-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-103-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-127-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-53-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-110-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-113-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-125-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-119-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/3076-122-0x0000000000490000-0x00000000016E4000-memory.dmp

        memory/4488-81-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/4488-69-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/4488-88-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/4488-79-0x0000000000400000-0x0000000000462000-memory.dmp