Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/11/2024, 12:11

General

  • Target
    9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
  • Size 1.0MB
  • Sample241113-pc1yca1lht
  • SHA256 9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 81.161.238.174:46098

  • 127.0.0.1:46098

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-UZGQA3

  • 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
  • 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

  • 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.

  • 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
  • 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 8 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 15 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
    "C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1288
    • 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\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4720
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gAGKIpbVdGGk.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4288
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gAGKIpbVdGGk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3100
    • C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
      "C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe"
      2⤵
        PID:2932
      • C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
        "C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2620
        • C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
          C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe /stext "C:\Users\Admin\AppData\Local\Temp\gajajciqxfnqlfpjunxpyhuafodgik"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3024
        • C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
          C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe /stext "C:\Users\Admin\AppData\Local\Temp\qvpskntjlnfvwulnlyjijuhrovvpbvkqig"
          3⤵
            PID:860
          • C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
            C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe /stext "C:\Users\Admin\AppData\Local\Temp\qvpskntjlnfvwulnlyjijuhrovvpbvkqig"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:856
          • C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
            C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe /stext "C:\Users\Admin\AppData\Local\Temp\bpullf"
            3⤵
              PID:3460
            • C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe
              C:\Users\Admin\AppData\Local\Temp\9b4391946e6ef750cd4790bbf6a35a0f2c43d10dd0475827e50946d8eea893b6.exe /stext "C:\Users\Admin\AppData\Local\Temp\bpullf"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2368

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              powershell.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
              • Size 2KB
              • SHA256 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
              • MD5 SHA1 SHA512

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 18KB
              • SHA256 cb276e8675918b9a477ea1609461f81fa5f3f253008727e54c9ee964dab5e321
              • MD5 SHA1 SHA512 SSDEEP

              __PSScriptPolicyTest_htvucok3.ncs.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_htvucok3.ncs.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512

              gajajciqxfnqlfpjunxpyhuafodgik

              • Path C:\Users\Admin\AppData\Local\Temp\gajajciqxfnqlfpjunxpyhuafodgik
              • Size 4KB
              • SHA256 d2637d58bb120dc6fefe2f38d6e0d4b308006b8639106a7f9e915fa80b5cc9d9
              • MD5 SHA1 SHA512 SSDEEP

              tmpB.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\tmpB.tmp
              • Size 1KB
              • SHA256 dd1805c37c1a94a090c5f77166671a0187352dd2a5b3d963a29462d2406b092c
              • MD5 SHA1 SHA512

              memory/856-68-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/856-66-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/856-65-0x0000000000400000-0x0000000000462000-memory.dmp

              memory/1288-5-0x00000000051B0000-0x000000000524C000-memory.dmp

              memory/1288-4-0x0000000004F40000-0x0000000004F4A000-memory.dmp

              memory/1288-10-0x000000000A620000-0x000000000A6E0000-memory.dmp

              memory/1288-8-0x000000007536E000-0x000000007536F000-memory.dmp

              memory/1288-7-0x0000000005580000-0x000000000559C000-memory.dmp

              memory/1288-0-0x000000007536E000-0x000000007536F000-memory.dmp

              memory/1288-6-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/1288-9-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/1288-3-0x0000000004EA0000-0x0000000004F32000-memory.dmp

              memory/1288-52-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/1288-2-0x00000000055A0000-0x0000000005B44000-memory.dmp

              memory/1288-1-0x00000000003A0000-0x00000000004AC000-memory.dmp

              memory/2368-69-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/2368-74-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/2368-73-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/2620-106-0x0000000010000000-0x0000000010019000-memory.dmp

              memory/2620-129-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-51-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-131-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-50-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-47-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-42-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-130-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-128-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-57-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-58-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-59-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-60-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-56-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-54-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-49-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-61-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-62-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-127-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-112-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-126-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-125-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-76-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-124-0x0000000000400000-0x0000000000482000-memory.dmp

              memory/2620-109-0x0000000010000000-0x0000000010019000-memory.dmp

              memory/2620-110-0x0000000010000000-0x0000000010019000-memory.dmp

              memory/3024-64-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/3024-63-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/3024-67-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/4288-89-0x00000000071F0000-0x0000000007293000-memory.dmp

              memory/4288-24-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/4288-77-0x00000000071A0000-0x00000000071D2000-memory.dmp

              memory/4288-91-0x0000000007550000-0x000000000756A000-memory.dmp

              memory/4288-90-0x0000000007B90000-0x000000000820A000-memory.dmp

              memory/4288-27-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/4288-103-0x00000000075C0000-0x00000000075CA000-memory.dmp

              memory/4288-104-0x00000000077D0000-0x0000000007866000-memory.dmp

              memory/4288-88-0x0000000007180000-0x000000000719E000-memory.dmp

              memory/4288-116-0x0000000007870000-0x0000000007878000-memory.dmp

              memory/4288-78-0x0000000075BF0000-0x0000000075C3C000-memory.dmp

              memory/4288-111-0x0000000007750000-0x0000000007761000-memory.dmp

              memory/4288-19-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/4288-122-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/4288-113-0x0000000007780000-0x000000000778E000-memory.dmp

              memory/4288-114-0x0000000007790000-0x00000000077A4000-memory.dmp

              memory/4288-115-0x0000000007890000-0x00000000078AA000-memory.dmp

              memory/4720-18-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/4720-123-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/4720-17-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/4720-15-0x00000000021D0000-0x0000000002206000-memory.dmp

              memory/4720-22-0x0000000004AD0000-0x0000000004B36000-memory.dmp

              memory/4720-21-0x0000000004A30000-0x0000000004A52000-memory.dmp

              memory/4720-23-0x0000000004B40000-0x0000000004BA6000-memory.dmp

              memory/4720-16-0x0000000004CE0000-0x0000000005308000-memory.dmp

              memory/4720-25-0x0000000075360000-0x0000000075B10000-memory.dmp

              memory/4720-26-0x00000000054D0000-0x0000000005824000-memory.dmp

              memory/4720-55-0x0000000005B10000-0x0000000005B5C000-memory.dmp

              memory/4720-53-0x0000000005AF0000-0x0000000005B0E000-memory.dmp

              memory/4720-93-0x0000000075BF0000-0x0000000075C3C000-memory.dmp