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
    27-11-2024 12:11

General

  • Target

    RFQ-00948-STELLION-878378.exe

  • Size

    1.1MB

  • MD5

    7d78937ebc3648958437741df13eec52

  • SHA1

    9b30169d5adb06c082d6b9e297368faad45725f5

  • SHA256

    ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

  • SHA512

    7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

  • SSDEEP

    24576:PYoOciJwQYaoRuivChV3DSwctuoqBMY9zVZEueHTf:PsbwQIRssqBMWVZEu

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

206.189.218.238:4782

206.189.218.238:2286

206.189.218.238:3363

206.189.218.238:3386

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NJK093

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • 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 3 IoCs

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

  • Executes dropped EXE 5 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 4 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.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:4764
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QgjhVvUyb.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:8
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCB3F.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4564
    • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
      "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"
      2⤵
        PID:3180
      • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
        "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"
        2⤵
        • Checks computer location settings
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3568
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:668
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QgjhVvUyb.exe"
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3712
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp216E.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2360
          • C:\ProgramData\Remcos\remcos.exe
            "C:\ProgramData\Remcos\remcos.exe"
            4⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3956
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\iospmwaffjifcnbauyvcbawawbcnq"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:2320
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\tjyieplztrakebpedjhdmfqreitwsciz"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:4212
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\vlds"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4232

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\ProgramData\Remcos\logs.dat

      Filesize

      144B

      MD5

      061e75a8e3e35b40082abcb3b4047e78

      SHA1

      8826056f33ca6c23b0c3b2223a499afd9e020f12

      SHA256

      dcbbf7e5f3aab4c70dbdb6395d1bbcdc5e4504b63f630f3b304381a1f3038edf

      SHA512

      7730130867738e0cb944629a1f8167bf21a38d362a694d70cbd317b3076dd71f2f84b9f2418db9a1161ec79d57898eb4656e145cfc4d7b00127be723b1565532

    • C:\ProgramData\Remcos\remcos.exe

      Filesize

      1.1MB

      MD5

      7d78937ebc3648958437741df13eec52

      SHA1

      9b30169d5adb06c082d6b9e297368faad45725f5

      SHA256

      ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

      SHA512

      7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

      Filesize

      18KB

      MD5

      9d09329fc65beca3370c976a1563e0fd

      SHA1

      91024b824142b6af125813f72d324335696a76f7

      SHA256

      8c3d6091ec5077cae00cc7848479eaf5076e806c3ec7334cf660d4dcc184a670

      SHA512

      af220b5fd9dbcdf18970d896a3781e198f6f82a90840e1cf06c4aaab3ae92de153d18a376895a1406a1fbdd8d810c3f35a7c4bc6ec8d44507df7cc4abf103adc

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qvl5ntfq.bmo.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      4KB

      MD5

      60a0bdc1cf495566ff810105d728af4a

      SHA1

      243403c535f37a1f3d5f307fc3fb8bdd5cbcf6e6

      SHA256

      fd12da9f9b031f9fa742fa73bbb2c9265f84f49069b7c503e512427b93bce6d2

      SHA512

      4445f214dbf5a01d703f22a848b56866f3f37b399de503f99d40448dc86459bf49d1fa487231f23c080a559017d72bcd9f6c13562e1f0bd53c1c9a89e73306a5

    • C:\Users\Admin\AppData\Local\Temp\tmpCB3F.tmp

      Filesize

      1KB

      MD5

      a67a4ecbeb8f8d1b1f69888da44ef4a8

      SHA1

      e40eb8a9bef53bd75619931b7f0c1d420b7d3d8d

      SHA256

      a759f0f3c9843f1204e3a0e179a4b9c348138e51ee36880c6ec812eb83c3821e

      SHA512

      eaefee53677a1c611d986104b0825560a271541442507856de75542ce58fbb73c7f6fe7d329e88000b680859b9a652c93aaef3ec35c3ff5d2109f1344739d6fc

    • memory/8-75-0x0000000007250000-0x0000000007258000-memory.dmp

      Filesize

      32KB

    • memory/8-21-0x0000000005330000-0x0000000005396000-memory.dmp

      Filesize

      408KB

    • memory/8-66-0x0000000006BE0000-0x0000000006C83000-memory.dmp

      Filesize

      652KB

    • memory/8-65-0x00000000061C0000-0x00000000061DE000-memory.dmp

      Filesize

      120KB

    • memory/8-55-0x0000000072AE0000-0x0000000072B2C000-memory.dmp

      Filesize

      304KB

    • memory/8-70-0x00000000071B0000-0x0000000007246000-memory.dmp

      Filesize

      600KB

    • memory/8-18-0x0000000004D00000-0x0000000005328000-memory.dmp

      Filesize

      6.2MB

    • memory/8-17-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/8-19-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/8-15-0x0000000002330000-0x0000000002366000-memory.dmp

      Filesize

      216KB

    • memory/8-78-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/8-24-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/8-22-0x0000000005490000-0x00000000054F6000-memory.dmp

      Filesize

      408KB

    • memory/8-67-0x0000000007580000-0x0000000007BFA000-memory.dmp

      Filesize

      6.5MB

    • memory/8-20-0x0000000004B40000-0x0000000004B62000-memory.dmp

      Filesize

      136KB

    • memory/8-27-0x0000000005600000-0x0000000005954000-memory.dmp

      Filesize

      3.3MB

    • memory/8-74-0x0000000007270000-0x000000000728A000-memory.dmp

      Filesize

      104KB

    • memory/8-73-0x0000000007170000-0x0000000007184000-memory.dmp

      Filesize

      80KB

    • memory/8-72-0x0000000007160000-0x000000000716E000-memory.dmp

      Filesize

      56KB

    • memory/8-71-0x0000000007130000-0x0000000007141000-memory.dmp

      Filesize

      68KB

    • memory/8-69-0x0000000006FB0000-0x0000000006FBA000-memory.dmp

      Filesize

      40KB

    • memory/8-68-0x0000000006F30000-0x0000000006F4A000-memory.dmp

      Filesize

      104KB

    • memory/8-52-0x0000000005C10000-0x0000000005C2E000-memory.dmp

      Filesize

      120KB

    • memory/8-53-0x0000000005CA0000-0x0000000005CEC000-memory.dmp

      Filesize

      304KB

    • memory/8-54-0x00000000061E0000-0x0000000006212000-memory.dmp

      Filesize

      200KB

    • memory/2320-132-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2320-131-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2320-126-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3568-51-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3568-23-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3568-26-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3568-30-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3568-25-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3712-117-0x0000000007200000-0x0000000007214000-memory.dmp

      Filesize

      80KB

    • memory/3712-116-0x00000000071C0000-0x00000000071D1000-memory.dmp

      Filesize

      68KB

    • memory/3712-115-0x0000000006E80000-0x0000000006F23000-memory.dmp

      Filesize

      652KB

    • memory/3712-105-0x0000000071760000-0x00000000717AC000-memory.dmp

      Filesize

      304KB

    • memory/3712-104-0x00000000061C0000-0x000000000620C000-memory.dmp

      Filesize

      304KB

    • memory/3712-102-0x0000000005810000-0x0000000005B64000-memory.dmp

      Filesize

      3.3MB

    • memory/3956-148-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/3956-150-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-179-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-174-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-178-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-177-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-176-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-175-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-85-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-90-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-166-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-120-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-119-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-121-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-125-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-167-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-158-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-142-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-141-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-157-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-84-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-89-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3956-149-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/3956-145-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/4212-133-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4212-130-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4212-128-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4232-136-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4232-134-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4232-137-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4764-8-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/4764-1-0x0000000000010000-0x000000000012C000-memory.dmp

      Filesize

      1.1MB

    • memory/4764-10-0x0000000009D90000-0x0000000009E2C000-memory.dmp

      Filesize

      624KB

    • memory/4764-2-0x00000000050B0000-0x0000000005654000-memory.dmp

      Filesize

      5.6MB

    • memory/4764-9-0x0000000007690000-0x0000000007754000-memory.dmp

      Filesize

      784KB

    • memory/4764-5-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/4764-6-0x0000000004FF0000-0x000000000500C000-memory.dmp

      Filesize

      112KB

    • memory/4764-36-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/4764-0-0x00000000753AE000-0x00000000753AF000-memory.dmp

      Filesize

      4KB

    • memory/4764-3-0x0000000004BA0000-0x0000000004C32000-memory.dmp

      Filesize

      584KB

    • memory/4764-4-0x0000000004B30000-0x0000000004B3A000-memory.dmp

      Filesize

      40KB

    • memory/4764-7-0x00000000753AE000-0x00000000753AF000-memory.dmp

      Filesize

      4KB