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Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/10/2024, 01:59

General

  • Target

    83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe

  • Size

    1.6MB

  • MD5

    2e58a14f3a8d78298aee99cb4ea39adc

  • SHA1

    90c96e8671f739a0a20daaafab1567d3c457a612

  • SHA256

    83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

  • SHA512

    71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d

  • SSDEEP

    24576:ffmMv6Ckr7Mny5QLH0yTfIXPlFb2wjVkwAE9owb7uVJnIJYKR3prW4BoPEK8X3PR:f3v+7/5QLVYdkQ99b7ujIJjixkyKi87

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

www.projectusf.com: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

    gfh

  • mouse_option

    false

  • mutex

    Rmc-J91LMC

  • 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 3 IoCs

    Password recovery tool for various web browsers

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe
    "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4400
    • C:\Users\Admin\AppData\Local\directory\Quotes.exe
      "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4028
      • C:\Windows\SysWOW64\svchost.exe
        "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2072
        • C:\Windows\SysWOW64\svchost.exe
          C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\djccazejjjifxlkuxtydfbpvp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1520
        • C:\Windows\SysWOW64\svchost.exe
          C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\nlpubrodfrakzayyoelwqojexqima"
          4⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:220
        • C:\Windows\SysWOW64\svchost.exe
          C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\qfvfckzftzsocgucxpxyttevyxzntzuf"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2352

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\gfh\logs.dat

    Filesize

    144B

    MD5

    254425d9cc84a940efaca4a84b869b81

    SHA1

    eb9581bf8b003b2a569f2610a9a6a90332b63a7c

    SHA256

    80fa63a99962cdeb94906dedce6ea2ba3d0960e222893ef79de78c0927513c58

    SHA512

    b2ea3bed6a15e45e8687fd0015ad64dfd15a3682e9f667fdfad4b09e598dfc2e1e7b76dfb269da582f879d3b1362c4d71a48758d76118ef68010180b893d6190

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

    Filesize

    4KB

    MD5

    7aca43b2800ceb18b3ed2326532545de

    SHA1

    d4cf207ef85bd749d59c1cb27a09c167ee21523a

    SHA256

    3d9f8622d97587fd84d3d0560a50ab38e5f894fe4b5bcaa34279643fdaaeb480

    SHA512

    0e002e6b8d965c227d9b1aa7c0251619c787ec7717e59667e756e5815e3666a955ea397eb148a1ed6bb7d8045727e4efa656a103f14bc70a03b03f0c91283c2f

  • C:\Users\Admin\AppData\Local\directory\Quotes.exe

    Filesize

    1.6MB

    MD5

    2e58a14f3a8d78298aee99cb4ea39adc

    SHA1

    90c96e8671f739a0a20daaafab1567d3c457a612

    SHA256

    83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

    SHA512

    71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d

  • memory/220-33-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/220-42-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/220-29-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/220-32-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1520-27-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1520-34-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1520-41-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1520-44-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1520-31-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2072-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-89-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-88-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-81-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-16-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-80-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-13-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-46-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2072-49-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2072-50-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2072-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-72-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-64-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-65-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2072-73-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2352-40-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2352-39-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2352-35-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4028-10-0x0000000004010000-0x0000000004410000-memory.dmp

    Filesize

    4.0MB

  • memory/4400-2-0x0000000004450000-0x0000000004850000-memory.dmp

    Filesize

    4.0MB