Analysis

  • max time kernel
    149s
  • max time network
    137s
  • 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 11:43

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:5036
    • 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:648
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpED0F.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4704
    • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
      "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"
      2⤵
        PID:4212
      • 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:1340
        • 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:892
          • 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:1852
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4532.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1808
          • 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:4824
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\cojdcuyqkucacrdg"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:4760
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\fqwvcmirydunmyrkxwne"
              5⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:2424
            • C:\ProgramData\Remcos\remcos.exe
              C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\pkcodftlmlmspmfoohifahv"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:5040

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\ProgramData\Remcos\logs.dat

      Filesize

      144B

      MD5

      0ec1b5533297da634fee3d4b43b2b0ce

      SHA1

      62c9bbb5f41cbff4466ab671319634a9b8cc046f

      SHA256

      7294614e0d298cb65e830b9a5b1dfe3a4b19bbd356611c9948c5cd48877c382c

      SHA512

      d1800f68d4ae143254579c06a39b543922017d485013fbc025fb3ed8ed15883f8df72f3d0ec67d0b0aa9c48b700b9408cc060a9c4f0123ad5c9beb3c29247f62

    • 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

      560e8886a755818fdb023a908c8e549b

      SHA1

      092b5ee9262101483836e20287e8265ce5d88a74

      SHA256

      895ea0a131119a249b8fb2549bd6fdbe80719e490fd961ae14f586fc17f45de2

      SHA512

      7f6c089b1b240a9761cf0966fc3c91bb783c9758687614b0844b5341366c1b2cc7b90fe40f9163f7c6a3aa71379801fa387df0b2b3fd5949108b43ae234c2a48

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s4mcylmu.en0.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      4KB

      MD5

      60a0bdc1cf495566ff810105d728af4a

      SHA1

      243403c535f37a1f3d5f307fc3fb8bdd5cbcf6e6

      SHA256

      fd12da9f9b031f9fa742fa73bbb2c9265f84f49069b7c503e512427b93bce6d2

      SHA512

      4445f214dbf5a01d703f22a848b56866f3f37b399de503f99d40448dc86459bf49d1fa487231f23c080a559017d72bcd9f6c13562e1f0bd53c1c9a89e73306a5

    • C:\Users\Admin\AppData\Local\Temp\tmpED0F.tmp

      Filesize

      1KB

      MD5

      a67a4ecbeb8f8d1b1f69888da44ef4a8

      SHA1

      e40eb8a9bef53bd75619931b7f0c1d420b7d3d8d

      SHA256

      a759f0f3c9843f1204e3a0e179a4b9c348138e51ee36880c6ec812eb83c3821e

      SHA512

      eaefee53677a1c611d986104b0825560a271541442507856de75542ce58fbb73c7f6fe7d329e88000b680859b9a652c93aaef3ec35c3ff5d2109f1344739d6fc

    • memory/648-73-0x0000000007780000-0x0000000007794000-memory.dmp

      Filesize

      80KB

    • memory/648-69-0x00000000075B0000-0x00000000075BA000-memory.dmp

      Filesize

      40KB

    • memory/648-72-0x0000000007770000-0x000000000777E000-memory.dmp

      Filesize

      56KB

    • memory/648-71-0x0000000007740000-0x0000000007751000-memory.dmp

      Filesize

      68KB

    • memory/648-15-0x0000000002940000-0x0000000002976000-memory.dmp

      Filesize

      216KB

    • memory/648-74-0x0000000007880000-0x000000000789A000-memory.dmp

      Filesize

      104KB

    • memory/648-17-0x0000000075300000-0x0000000075AB0000-memory.dmp

      Filesize

      7.7MB

    • memory/648-18-0x0000000005440000-0x0000000005A68000-memory.dmp

      Filesize

      6.2MB

    • memory/648-19-0x0000000075300000-0x0000000075AB0000-memory.dmp

      Filesize

      7.7MB

    • memory/648-25-0x0000000005AE0000-0x0000000005B46000-memory.dmp

      Filesize

      408KB

    • memory/648-24-0x0000000005300000-0x0000000005366000-memory.dmp

      Filesize

      408KB

    • memory/648-22-0x0000000005260000-0x0000000005282000-memory.dmp

      Filesize

      136KB

    • memory/648-70-0x00000000077C0000-0x0000000007856000-memory.dmp

      Filesize

      600KB

    • memory/648-54-0x0000000006800000-0x0000000006832000-memory.dmp

      Filesize

      200KB

    • memory/648-68-0x0000000007540000-0x000000000755A000-memory.dmp

      Filesize

      104KB

    • memory/648-28-0x0000000075300000-0x0000000075AB0000-memory.dmp

      Filesize

      7.7MB

    • memory/648-67-0x0000000007B80000-0x00000000081FA000-memory.dmp

      Filesize

      6.5MB

    • memory/648-75-0x0000000007860000-0x0000000007868000-memory.dmp

      Filesize

      32KB

    • memory/648-78-0x0000000075300000-0x0000000075AB0000-memory.dmp

      Filesize

      7.7MB

    • memory/648-66-0x0000000007230000-0x00000000072D3000-memory.dmp

      Filesize

      652KB

    • memory/648-65-0x00000000067C0000-0x00000000067DE000-memory.dmp

      Filesize

      120KB

    • memory/648-39-0x0000000005C50000-0x0000000005FA4000-memory.dmp

      Filesize

      3.3MB

    • memory/648-52-0x0000000006220000-0x000000000623E000-memory.dmp

      Filesize

      120KB

    • memory/648-53-0x00000000062E0000-0x000000000632C000-memory.dmp

      Filesize

      304KB

    • memory/648-55-0x0000000071A60000-0x0000000071AAC000-memory.dmp

      Filesize

      304KB

    • memory/1340-23-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1340-51-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1340-29-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1340-21-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1340-20-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1852-104-0x0000000006650000-0x000000000669C000-memory.dmp

      Filesize

      304KB

    • memory/1852-105-0x0000000075BB0000-0x0000000075BFC000-memory.dmp

      Filesize

      304KB

    • memory/1852-115-0x0000000007880000-0x0000000007923000-memory.dmp

      Filesize

      652KB

    • memory/1852-116-0x0000000007B30000-0x0000000007B41000-memory.dmp

      Filesize

      68KB

    • memory/1852-102-0x0000000005FA0000-0x00000000062F4000-memory.dmp

      Filesize

      3.3MB

    • memory/1852-117-0x0000000007B80000-0x0000000007B94000-memory.dmp

      Filesize

      80KB

    • memory/2424-133-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2424-128-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2424-131-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4760-132-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4760-130-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4760-126-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4824-119-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-146-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/4824-171-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-91-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-85-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-89-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-170-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-162-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-161-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-118-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-121-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-124-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-154-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-153-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-148-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-84-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4824-147-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/4824-143-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/5036-5-0x0000000075300000-0x0000000075AB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5036-0-0x000000007530E000-0x000000007530F000-memory.dmp

      Filesize

      4KB

    • memory/5036-40-0x0000000075300000-0x0000000075AB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5036-2-0x0000000006280000-0x0000000006824000-memory.dmp

      Filesize

      5.6MB

    • memory/5036-9-0x0000000007300000-0x00000000073C4000-memory.dmp

      Filesize

      784KB

    • memory/5036-8-0x0000000075300000-0x0000000075AB0000-memory.dmp

      Filesize

      7.7MB

    • memory/5036-10-0x000000000ACC0000-0x000000000AD5C000-memory.dmp

      Filesize

      624KB

    • memory/5036-3-0x0000000005B30000-0x0000000005BC2000-memory.dmp

      Filesize

      584KB

    • memory/5036-1-0x0000000000FA0000-0x00000000010BC000-memory.dmp

      Filesize

      1.1MB

    • memory/5036-4-0x0000000003670000-0x000000000367A000-memory.dmp

      Filesize

      40KB

    • memory/5036-7-0x000000007530E000-0x000000007530F000-memory.dmp

      Filesize

      4KB

    • memory/5036-6-0x0000000005E60000-0x0000000005E7C000-memory.dmp

      Filesize

      112KB

    • memory/5040-136-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/5040-134-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/5040-137-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB