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
    25-09-2024 07:30

General

  • Target

    311148c65ef0cadb803bccc2cf922fee.exe

  • Size

    1.1MB

  • MD5

    311148c65ef0cadb803bccc2cf922fee

  • SHA1

    d70c32206a52470e3b622984e7fb6ab7668c5919

  • SHA256

    ff67f46cb0b8c93cc038c969376a92b04ab3809b0efd52f99bdfbbd9a991cc87

  • SHA512

    8a998d9e89a53b65ef1d5a996f5540d0c0ba7f964af274ef5991dac3c4fd6c3eb4b89f5bc54449b797ffede1f57bd8d4604f4df3cd46fadb6dc94391713208cc

  • SSDEEP

    24576:W4rAZ6dcBjZFsPgl8bIDnOjkO4/JHuNPzb2IFA:W4MwMwbIKkOIJHIPw

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

hiddenrmcnew.duckdns.org:7839

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-PW8G0U

  • 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 2 IoCs

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

  • 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 1 IoCs

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

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
    "C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.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:3052
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4356
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wUtVQHiucCbXP.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1672
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wUtVQHiucCbXP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD9B6.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4936
    • C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
      "C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1936
      • C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
        C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe /stext "C:\Users\Admin\AppData\Local\Temp\tnvt"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1488
      • C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
        C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe /stext "C:\Users\Admin\AppData\Local\Temp\dhadyea"
        3⤵
        • Suspicious use of UnmapMainImage
        PID:1068
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1068 -s 12
          4⤵
          • Program crash
          PID:5100
      • C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
        C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe /stext "C:\Users\Admin\AppData\Local\Temp\ojfwywkhqkg"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2292
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1068 -ip 1068
    1⤵
      PID:1384

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • 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

      6292700e859923477067263307c74456

      SHA1

      95977dcc7d760c371be15114373d05785df24b9b

      SHA256

      f1791a4ce3f9c96841b5765394b63b197ae73d20070aac1cd0c704a41946f6bc

      SHA512

      b34ff3f394ee59d84dfffbb8c5611b7d5d06f334f5aa1781f0164f47323650b5de61eba0fc4152da5791bea1eb99cb2fcf79a8ae07f37c12ef6230511ac76add

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zzyadlh4.dmx.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpD9B6.tmp

      Filesize

      1KB

      MD5

      6af2f0cfddf4122185ec6ff4ea6714b4

      SHA1

      985530276b95ae004256ca48cb870228ed188518

      SHA256

      ebd0af07761cea31b9b0c1928eff8c74a0e6ba8a4bbd5ccb6a067cf7f082ef0c

      SHA512

      c46040dfd9eed75119ebe48979472acb5fe7ac774dc807d3d1aa88320f838ac469fd81009748e3dec09068fcaae05fafe0cd454acf71d454640736ddbf5f5d19

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

      Filesize

      4KB

      MD5

      c0ab2847671ed5375328c5127a02cc72

      SHA1

      dc2bcb51562fb17e5c8787833bc0181d88a5b75e

      SHA256

      e961f466a0638bc99182d0056245e2d8bf1ccc13a189b802aada981f379e2384

      SHA512

      0b8b634d21ac71e02cef86687bf84b6fcecfd24dafab8130f42ce8b4b3f308a2e1b1fa7bf8d37f2eda76efae2b30b8d39f41d808d771562d8545ed144241924f

    • memory/1068-102-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1488-106-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1488-103-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1488-101-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1672-23-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/1672-36-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/1672-98-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/1672-91-0x0000000007DF0000-0x0000000007DF8000-memory.dmp

      Filesize

      32KB

    • memory/1672-90-0x0000000007E10000-0x0000000007E2A000-memory.dmp

      Filesize

      104KB

    • memory/1672-89-0x0000000007D10000-0x0000000007D24000-memory.dmp

      Filesize

      80KB

    • memory/1672-84-0x0000000007D50000-0x0000000007DE6000-memory.dmp

      Filesize

      600KB

    • memory/1672-22-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/1672-79-0x0000000008110000-0x000000000878A000-memory.dmp

      Filesize

      6.5MB

    • memory/1672-76-0x00000000079A0000-0x0000000007A43000-memory.dmp

      Filesize

      652KB

    • memory/1672-56-0x0000000075AC0000-0x0000000075B0C000-memory.dmp

      Filesize

      304KB

    • memory/1936-82-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-119-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-126-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-100-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-99-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-47-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-49-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-46-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-87-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-125-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-124-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-53-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-123-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-113-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1936-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-121-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-120-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-78-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-77-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-116-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1936-118-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1936-117-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1936-83-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2292-107-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2292-104-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2292-105-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3052-2-0x0000000005DE0000-0x0000000006384000-memory.dmp

      Filesize

      5.6MB

    • memory/3052-1-0x0000000000CE0000-0x0000000000DF2000-memory.dmp

      Filesize

      1.1MB

    • memory/3052-50-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/3052-10-0x000000000BE00000-0x000000000BE9C000-memory.dmp

      Filesize

      624KB

    • memory/3052-3-0x0000000005830000-0x00000000058C2000-memory.dmp

      Filesize

      584KB

    • memory/3052-7-0x000000007523E000-0x000000007523F000-memory.dmp

      Filesize

      4KB

    • memory/3052-6-0x0000000005960000-0x0000000005972000-memory.dmp

      Filesize

      72KB

    • memory/3052-0-0x000000007523E000-0x000000007523F000-memory.dmp

      Filesize

      4KB

    • memory/3052-4-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/3052-8-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/3052-9-0x0000000009530000-0x00000000095F0000-memory.dmp

      Filesize

      768KB

    • memory/3052-5-0x00000000057F0000-0x00000000057FA000-memory.dmp

      Filesize

      40KB

    • memory/4356-72-0x0000000006D30000-0x0000000006D4E000-memory.dmp

      Filesize

      120KB

    • memory/4356-97-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/4356-16-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/4356-15-0x0000000002E70000-0x0000000002EA6000-memory.dmp

      Filesize

      216KB

    • memory/4356-18-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB

    • memory/4356-17-0x0000000005990000-0x0000000005FB8000-memory.dmp

      Filesize

      6.2MB

    • memory/4356-88-0x0000000007CF0000-0x0000000007CFE000-memory.dmp

      Filesize

      56KB

    • memory/4356-85-0x0000000007CC0000-0x0000000007CD1000-memory.dmp

      Filesize

      68KB

    • memory/4356-20-0x0000000006030000-0x0000000006096000-memory.dmp

      Filesize

      408KB

    • memory/4356-81-0x0000000007B30000-0x0000000007B3A000-memory.dmp

      Filesize

      40KB

    • memory/4356-21-0x0000000006150000-0x00000000061B6000-memory.dmp

      Filesize

      408KB

    • memory/4356-80-0x0000000007AC0000-0x0000000007ADA000-memory.dmp

      Filesize

      104KB

    • memory/4356-24-0x00000000061C0000-0x0000000006514000-memory.dmp

      Filesize

      3.3MB

    • memory/4356-19-0x00000000057E0000-0x0000000005802000-memory.dmp

      Filesize

      136KB

    • memory/4356-54-0x0000000006D50000-0x0000000006D82000-memory.dmp

      Filesize

      200KB

    • memory/4356-55-0x0000000075AC0000-0x0000000075B0C000-memory.dmp

      Filesize

      304KB

    • memory/4356-52-0x0000000006B30000-0x0000000006B7C000-memory.dmp

      Filesize

      304KB

    • memory/4356-51-0x0000000006790000-0x00000000067AE000-memory.dmp

      Filesize

      120KB

    • memory/4356-34-0x0000000075230000-0x00000000759E0000-memory.dmp

      Filesize

      7.7MB