Analysis

  • max time kernel
    147s
  • max time network
    149s
  • 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 11:36

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 18 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 51 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:1064
    • 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:1956
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFA0F.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1848
    • 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:3624
      • 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:2400
        • 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:1464
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp52BF.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1616
        • 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:4688
          • C:\ProgramData\Remcos\remcos.exe
            C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\sboqdyiqnopmwyhmrvepwrcggc"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:1496
          • C:\ProgramData\Remcos\remcos.exe
            C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\udcbeqtrbwhyzedqagzrzepxpqvhok"
            5⤵
            • Executes dropped EXE
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:3920
          • C:\ProgramData\Remcos\remcos.exe
            C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\fxhtfjdlpfzdjsrcjrmkkjjgyxnqhvvuk"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    4baef731a33aa7f46a2028322e71ff86

    SHA1

    8fbfaac02ff9e4b4e051f9b8e630acc67619225f

    SHA256

    da10fa21131507838fe77a867b71240c633408afb18f288344ef3f515069799a

    SHA512

    e6ac3140f7f6087887b135f3e9ab95d6c03013f86d94753e612aae23c2d424030321024e2611d46214533a879f0567ebe46169d58421bd764872dd9cb7a345b2

  • 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

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

    Filesize

    18KB

    MD5

    cc4a04ba6193065acc043abc8d6c94c7

    SHA1

    bef67e5bf0316e6e11cf7c5d1ae69723bbb173c7

    SHA256

    34dd8b07f89d6e4300ad05ffe1da5ceb630a1073833512b06d02bd85ec016981

    SHA512

    00056dfd97e6b8603294e02982c3f1788dd29b546bb4596c82e029f27461536b56fe52640425233bd132396c8be55e9d2d6a9aab27fea6078e3f9e0802b9ab9c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mhoommsg.etl.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    4KB

    MD5

    c3c5f2de99b7486f697634681e21bab0

    SHA1

    00f90d495c0b2b63fde6532e033fdd2ade25633d

    SHA256

    76296dc29f718988107d35d0e0b835c2bf3fc7405e79e5121aa4738f82b51582

    SHA512

    7c60ffdc093de30e793d20768877f2f586bee3e948767871f9a1139252d5d2f593ba6f88ce0ed5f72c79faddb26186792df0581e4b6c84d405c44d9d12f951b8

  • C:\Users\Admin\AppData\Local\Temp\tmpFA0F.tmp

    Filesize

    1KB

    MD5

    31b44d4ac65798745c3f37f070c0653e

    SHA1

    4b15aea1d260f96b2208f434be74a2aaeca85c2e

    SHA256

    29b008a87cdc5298649b31bc2ccde46812bf69f48bb4b9b5e895bc8d01bf5cff

    SHA512

    845d1165d19fcd4b0842c116f7dfd34e9fb364937ed9c0738999a46559e68ed98946f84a61f2900fd315b242bc03eaec4ad860aeb8078fb85c843963744e1812

  • memory/1064-4-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

    Filesize

    40KB

  • memory/1064-8-0x0000000074400000-0x0000000074BB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1064-9-0x00000000079D0000-0x0000000007A94000-memory.dmp

    Filesize

    784KB

  • memory/1064-10-0x000000000A0D0000-0x000000000A16C000-memory.dmp

    Filesize

    624KB

  • memory/1064-7-0x000000007440E000-0x000000007440F000-memory.dmp

    Filesize

    4KB

  • memory/1064-6-0x00000000061C0000-0x00000000061DC000-memory.dmp

    Filesize

    112KB

  • memory/1064-51-0x0000000074400000-0x0000000074BB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1064-5-0x0000000074400000-0x0000000074BB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1064-0-0x000000007440E000-0x000000007440F000-memory.dmp

    Filesize

    4KB

  • memory/1064-3-0x0000000004F00000-0x0000000004F92000-memory.dmp

    Filesize

    584KB

  • memory/1064-2-0x0000000005410000-0x00000000059B4000-memory.dmp

    Filesize

    5.6MB

  • memory/1064-1-0x0000000000370000-0x000000000048C000-memory.dmp

    Filesize

    1.1MB

  • memory/1464-105-0x0000000074CB0000-0x0000000074CFC000-memory.dmp

    Filesize

    304KB

  • memory/1464-115-0x0000000006E10000-0x0000000006EB3000-memory.dmp

    Filesize

    652KB

  • memory/1464-116-0x0000000006FA0000-0x0000000006FB1000-memory.dmp

    Filesize

    68KB

  • memory/1464-104-0x0000000005C30000-0x0000000005C7C000-memory.dmp

    Filesize

    304KB

  • memory/1464-117-0x0000000007130000-0x0000000007144000-memory.dmp

    Filesize

    80KB

  • memory/1464-93-0x0000000005500000-0x0000000005854000-memory.dmp

    Filesize

    3.3MB

  • memory/1496-140-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1496-136-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1496-132-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1956-75-0x0000000007600000-0x0000000007608000-memory.dmp

    Filesize

    32KB

  • memory/1956-17-0x0000000005190000-0x00000000057B8000-memory.dmp

    Filesize

    6.2MB

  • memory/1956-53-0x0000000006530000-0x000000000657C000-memory.dmp

    Filesize

    304KB

  • memory/1956-54-0x0000000007170000-0x00000000071A2000-memory.dmp

    Filesize

    200KB

  • memory/1956-55-0x00000000707E0000-0x000000007082C000-memory.dmp

    Filesize

    304KB

  • memory/1956-65-0x00000000071B0000-0x00000000071CE000-memory.dmp

    Filesize

    120KB

  • memory/1956-66-0x00000000071D0000-0x0000000007273000-memory.dmp

    Filesize

    652KB

  • memory/1956-67-0x0000000007930000-0x0000000007FAA000-memory.dmp

    Filesize

    6.5MB

  • memory/1956-68-0x00000000072E0000-0x00000000072FA000-memory.dmp

    Filesize

    104KB

  • memory/1956-69-0x0000000007350000-0x000000000735A000-memory.dmp

    Filesize

    40KB

  • memory/1956-70-0x0000000007560000-0x00000000075F6000-memory.dmp

    Filesize

    600KB

  • memory/1956-71-0x00000000074E0000-0x00000000074F1000-memory.dmp

    Filesize

    68KB

  • memory/1956-72-0x0000000007510000-0x000000000751E000-memory.dmp

    Filesize

    56KB

  • memory/1956-73-0x0000000007520000-0x0000000007534000-memory.dmp

    Filesize

    80KB

  • memory/1956-74-0x0000000007620000-0x000000000763A000-memory.dmp

    Filesize

    104KB

  • memory/1956-26-0x00000000050F0000-0x0000000005112000-memory.dmp

    Filesize

    136KB

  • memory/1956-78-0x0000000074400000-0x0000000074BB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1956-15-0x0000000004A10000-0x0000000004A46000-memory.dmp

    Filesize

    216KB

  • memory/1956-16-0x0000000074400000-0x0000000074BB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1956-52-0x0000000005FD0000-0x0000000005FEE000-memory.dmp

    Filesize

    120KB

  • memory/1956-18-0x0000000074400000-0x0000000074BB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1956-19-0x0000000074400000-0x0000000074BB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1956-34-0x00000000059C0000-0x0000000005A26000-memory.dmp

    Filesize

    408KB

  • memory/1956-39-0x0000000005B30000-0x0000000005E84000-memory.dmp

    Filesize

    3.3MB

  • memory/1956-35-0x0000000005AA0000-0x0000000005B06000-memory.dmp

    Filesize

    408KB

  • memory/2536-146-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2536-139-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2536-142-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3624-28-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3624-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3624-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3624-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3624-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3920-137-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3920-134-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3920-138-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4688-125-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-130-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-131-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-127-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-126-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-124-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-121-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-122-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-120-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-128-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-149-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/4688-152-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/4688-153-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/4688-154-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-157-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-158-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-119-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-165-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-166-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-174-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4688-175-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB