Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20-09-2024 01:46

General

  • Target

    d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9.exe

  • Size

    988KB

  • MD5

    dc6296c1f5ec3b6e4dcbc33d0fcf3616

  • SHA1

    64c81ccb99415efe3aaffcfeea93d15fc08b735b

  • SHA256

    d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9

  • SHA512

    e28695c316d1b5d2d35726ed3f68ebccc1d07083d3b533b90ac9a1cf697ebbee8794278625107f305e22b55c68a1a820a73103f208f6f6a0f40ecf24f4b5db98

  • SSDEEP

    24576:72R1pA1DLK3qSmuyhBaNV8DDCANtsMFSzraULSgk:OPA1DLKagy4V8DftsgSzraR

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:59321

nnamoo.duckdns.org:59321

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-41EVS0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • 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 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Suspicious use of SetThreadContext 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 5 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9.exe
    "C:\Users\Admin\AppData\Local\Temp\d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2540
    • 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\d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2564
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YHWyXapflg.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2456
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YHWyXapflg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDCC8.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2716
    • C:\Users\Admin\AppData\Local\Temp\d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9.exe
      "C:\Users\Admin\AppData\Local\Temp\d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2804

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpDCC8.tmp

    Filesize

    1KB

    MD5

    3dfc233eb2f9770e7bcdcd8ffcc84e40

    SHA1

    9b3b7bc0496917c9bfdd347052390c5b09152908

    SHA256

    178f6f49ffbc3c263b19f753983fa5fac63c7b0587c0ba3474f469424c0d13d4

    SHA512

    f41c573eb71882f8220a6de9ee13521dd4550431b086aa5af56f1479deb4524655b0a94b2933f2563fd633b7035280bfde2e49f016e7c2f72a498519018781eb

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    bca8b1d88a6f3bf7dfb884c65f8ecd94

    SHA1

    d13d0a69e145e637d5fd0b45a258a6d2b1d5af39

    SHA256

    6d0fe4b1f58b6a7670eed4952c9f9a3faaae4e16d6475874c712a631d04d6aa5

    SHA512

    fcae2349ca45b1c22a1ec4cae8ca81db782f2f3f7095ee813ac0b96b52bb8f06c37b0ae8f3ad232eeeee57b6d67be60955ee200eccb31fde4434b6ce73b59ab2

  • memory/2540-0-0x000000007452E000-0x000000007452F000-memory.dmp

    Filesize

    4KB

  • memory/2540-1-0x0000000000D00000-0x0000000000DFC000-memory.dmp

    Filesize

    1008KB

  • memory/2540-2-0x0000000074520000-0x0000000074C0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2540-3-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2540-4-0x000000007452E000-0x000000007452F000-memory.dmp

    Filesize

    4KB

  • memory/2540-5-0x0000000074520000-0x0000000074C0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2540-6-0x00000000054A0000-0x000000000555E000-memory.dmp

    Filesize

    760KB

  • memory/2540-40-0x0000000074520000-0x0000000074C0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2804-33-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-41-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-31-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-39-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-38-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-37-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2804-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-27-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-23-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-19-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-29-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-42-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-44-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-43-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-45-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-48-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-49-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-51-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-50-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-52-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-53-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-54-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2804-55-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB