Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2024, 09:01

General

  • Target
    PO238109.exe
  • Size 937KB
  • Sample241106-kywtasxdjf
  • SHA256 25d5929f0ef894bf532d5c21e03474a7f7db7cc0be168a2d618a40bb47de9643
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • AY101

C2
  • 45.32.153.255:2017

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-PRHVKY

  • 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.

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO238109.exe
    "C:\Users\Admin\AppData\Local\Temp\PO238109.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2060
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\PO238109.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:452
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SgOJFU.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4556
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SgOJFU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1B15.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3144
    • C:\Users\Admin\AppData\Local\Temp\PO238109.exe
      "C:\Users\Admin\AppData\Local\Temp\PO238109.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2464

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 082ff5c8179db1dbccc8da84ac258f4da351bc904122facb6bc8a5a235a648d7
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_ojdgmjro.1vr.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ojdgmjro.1vr.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        tmp1B15.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp1B15.tmp
        • Size 1KB
        • SHA256 5b3929c3b3cf85efa4b7c1c3c6254ef2427758bac23b1731c3e260a10c54b1dc
        • MD5 SHA1 SHA512

        memory/452-26-0x00000000054E0000-0x0000000005546000-memory.dmp

        memory/452-16-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/452-83-0x00000000075C0000-0x00000000075DA000-memory.dmp

        memory/452-86-0x00000000077C0000-0x00000000077D1000-memory.dmp

        memory/452-89-0x0000000007900000-0x000000000791A000-memory.dmp

        memory/452-55-0x0000000006320000-0x000000000636C000-memory.dmp

        memory/452-45-0x0000000005C50000-0x0000000005FA4000-memory.dmp

        memory/452-24-0x00000000053D0000-0x00000000053F2000-memory.dmp

        memory/452-15-0x00000000029B0000-0x00000000029E6000-memory.dmp

        memory/452-82-0x0000000007C00000-0x000000000827A000-memory.dmp

        memory/452-18-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/452-17-0x00000000055E0000-0x0000000005C08000-memory.dmp

        memory/452-19-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/452-25-0x0000000005470000-0x00000000054D6000-memory.dmp

        memory/452-96-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/452-71-0x0000000075A80000-0x0000000075ACC000-memory.dmp

        memory/452-53-0x0000000006270000-0x000000000628E000-memory.dmp

        memory/2060-8-0x00000000751DE000-0x00000000751DF000-memory.dmp

        memory/2060-0-0x00000000751DE000-0x00000000751DF000-memory.dmp

        memory/2060-10-0x0000000008AF0000-0x0000000008BB0000-memory.dmp

        memory/2060-9-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/2060-7-0x0000000005A30000-0x0000000005A4C000-memory.dmp

        memory/2060-6-0x0000000005990000-0x0000000005A2C000-memory.dmp

        memory/2060-5-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/2060-4-0x00000000058D0000-0x00000000058DA000-memory.dmp

        memory/2060-3-0x0000000005710000-0x00000000057A2000-memory.dmp

        memory/2060-2-0x0000000005C10000-0x00000000061B4000-memory.dmp

        memory/2060-51-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/2060-1-0x0000000000C40000-0x0000000000D30000-memory.dmp

        memory/2464-98-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-134-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-54-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-58-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-152-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-151-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-150-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-52-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-149-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-49-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-50-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-148-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-147-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-48-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-146-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-145-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-46-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-144-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-143-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-142-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-141-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-97-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-140-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-99-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-100-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-101-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-102-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-103-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-104-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-105-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-106-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-107-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-108-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-109-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-110-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-111-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-112-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-113-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-114-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-115-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-116-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-117-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-118-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-119-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-120-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-121-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-122-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-123-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-124-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-125-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-126-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-127-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-128-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-129-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-130-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-131-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-132-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-133-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-56-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-135-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-136-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-137-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-138-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2464-139-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4556-87-0x0000000007E60000-0x0000000007E6E000-memory.dmp

        memory/4556-95-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/4556-21-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/4556-22-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/4556-90-0x0000000007F50000-0x0000000007F58000-memory.dmp

        memory/4556-88-0x0000000007E70000-0x0000000007E84000-memory.dmp

        memory/4556-20-0x00000000751D0000-0x0000000075980000-memory.dmp

        memory/4556-85-0x0000000007EB0000-0x0000000007F46000-memory.dmp

        memory/4556-84-0x0000000007CA0000-0x0000000007CAA000-memory.dmp

        memory/4556-81-0x00000000078F0000-0x0000000007993000-memory.dmp

        memory/4556-70-0x00000000078D0000-0x00000000078EE000-memory.dmp

        memory/4556-59-0x0000000007890000-0x00000000078C2000-memory.dmp

        memory/4556-60-0x0000000075A80000-0x0000000075ACC000-memory.dmp