Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    18-08-2024 01:12

General

  • Target

    4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe

  • Size

    626KB

  • MD5

    9be2bb8f46192a7cf7006587c0e95d54

  • SHA1

    9e31f25cd0c0cf37a92a61ebd87293b519da5534

  • SHA256

    4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940

  • SHA512

    76140dd7bcfdb778b70c4864934016b9cbc60b4f36ece6aa671c6556f1504d38e3428102663c47ffa8346e2201078a28443a0b42be0c6b7e820f6823cab4810b

  • SSDEEP

    12288:naxvaBAHu5sn0ulSRNQeILTPNRLZi8s7exFe2WM:a9aBAObRNVI/PNxzxFMM

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

103.67.162.233:9462

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-GRR4WM

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe
    "C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle hidden "$Afmatningens=Get-Content 'C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys';$Unsucculent=$Afmatningens.SubString(619,3);.$Unsucculent($Afmatningens)"
      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:2756
      • C:\Program Files (x86)\windows mail\wab.exe
        "C:\Program Files (x86)\windows mail\wab.exe"
        3⤵
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2648

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    129b63696901496a0bc7fad0dbee53cb

    SHA1

    bd52c91ba23d3e84afe4e04cce263f794456ad0a

    SHA256

    6200e4314a795069f8ae7b76badc9a8bba6ac4d98632b380c4b5114fd82e564b

    SHA512

    f7db61f7a1807fcdd84e1e23acd3fb047a5bd5ad9f0d23746aca18b4146b9f3f91e16f7cdbc7caa07f35d45a160fdb1e5607abb6a10ed4cbe10e40c85b47384d

  • C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys

    Filesize

    52KB

    MD5

    d9a344e48210c5d555312be94347270a

    SHA1

    8e1957cb5f8e181411781bca9fa72f57e8d0d2b1

    SHA256

    e31954e86c5fadd5da5409be4c6266ac0740652f25073eb29f87d6727d0668b6

    SHA512

    ed1c9a1ce86f20c3eb860079067a7476b8e543c212b0fccd1e73183b6535dec74f34ece8b0225f10fd2f211af68bac6d7302c3b91e1a88d30285ad202854d853

  • C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Sacrificed.Guf

    Filesize

    310KB

    MD5

    e5923d356c8ca6e039eb3c12c3f8ce7a

    SHA1

    b920b2490fb5bbcefb281df27180eaa4f81825fc

    SHA256

    a3761e7a154e7defc78d9be7e003d327de84520afe5d8adc90074822ade75b65

    SHA512

    41af37685e04e272fe7b0b4e0dcb93b0ca6e33f930dc362ba82f93fa428ba0664ce06699c21ccb55a84c5e927d30415fe110cb6f35b1028d46f97d2f7ec95f4f

  • memory/2648-40-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-43-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-55-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-52-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-49-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-46-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-37-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-34-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-19-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-21-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-28-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2648-31-0x0000000000B60000-0x0000000001BC2000-memory.dmp

    Filesize

    16.4MB

  • memory/2756-8-0x00000000738D0000-0x0000000073E7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2756-18-0x00000000738D0000-0x0000000073E7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2756-17-0x0000000006640000-0x000000000B4B5000-memory.dmp

    Filesize

    78.5MB

  • memory/2756-7-0x00000000738D1000-0x00000000738D2000-memory.dmp

    Filesize

    4KB

  • memory/2756-9-0x00000000738D0000-0x0000000073E7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2756-16-0x00000000738D0000-0x0000000073E7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2756-11-0x00000000738D0000-0x0000000073E7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2756-14-0x00000000738D0000-0x0000000073E7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2756-10-0x00000000738D0000-0x0000000073E7B000-memory.dmp

    Filesize

    5.7MB