Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    02-09-2024 09:11

General

  • Target

    b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe

  • Size

    18.5MB

  • MD5

    1edf285969ddea6233f47882315193c0

  • SHA1

    a7f25cf4a08b478e0b046a4013ce73cd0edaeba6

  • SHA256

    b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65

  • SHA512

    3315d921e8089a6b4d8f2bf26b3335a1dbd8151f2545e2d4790026e4d33d7a2a2d88f791e94cb1f3662e1a3a57079f3eb4960ffcdbd4e99b29672653487d8b8a

  • SSDEEP

    393216:+nfbWnfb7nfbanfbonfbJnfbJnfb9nfb+nfbwnfbWnfb:+ninfnWnknVntnhnincnKn

Malware Config

Extracted

Family

remcos

Botnet

Rain

C2

nzobaku.ddns.net:8081

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-OVTDA2

  • 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 4 IoCs

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

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 10 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe
    "C:\Users\Admin\AppData\Local\Temp\b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2688
    • 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\b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2856
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SBYYcyqg.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2596
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SBYYcyqg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp518A.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2536
    • C:\Users\Admin\AppData\Local\Temp\b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe
      "C:\Users\Admin\AppData\Local\Temp\b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2224
      • C:\Users\Admin\AppData\Local\Temp\._cache_b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe
        "C:\Users\Admin\AppData\Local\Temp\._cache_b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2644
      • C:\ProgramData\Synaptics\Synaptics.exe
        "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:836
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\ProgramData\Synaptics\Synaptics.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2452
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SBYYcyqg.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1964
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SBYYcyqg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAAA1.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2200
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe"
          4⤵
          • Executes dropped EXE
          PID:764
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe"
          4⤵
          • Executes dropped EXE
          PID:748
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe"
          4⤵
          • Executes dropped EXE
          PID:984
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe"
          4⤵
          • Executes dropped EXE
          PID:928
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe"
          4⤵
          • Executes dropped EXE
          PID:2492

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Synaptics\Synaptics.exe

    Filesize

    18.5MB

    MD5

    1edf285969ddea6233f47882315193c0

    SHA1

    a7f25cf4a08b478e0b046a4013ce73cd0edaeba6

    SHA256

    b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65

    SHA512

    3315d921e8089a6b4d8f2bf26b3335a1dbd8151f2545e2d4790026e4d33d7a2a2d88f791e94cb1f3662e1a3a57079f3eb4960ffcdbd4e99b29672653487d8b8a

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    2783211a87f423e99fad5df13b55a717

    SHA1

    aa82e6cb69121c82beed420a10fb445558c49f48

    SHA256

    98c9fcf5f821edf94bddf5ff606d06aba33fc15254f73b3ed65028bf0763282d

    SHA512

    b9c222ff32f838fd475453232474e7af6de8fa1349c2d4ff28e016e9fb63a93167856ed674cc0a1356103b69a859b2a1863cb54b4b358915f7961b8bbd34d430

  • C:\Users\Admin\AppData\Local\Temp\tmp518A.tmp

    Filesize

    1KB

    MD5

    11c090463656a9c1dbcda767d4f28b40

    SHA1

    89d75d73215649a835eab23827f898d9fbb1e680

    SHA256

    6be28036505d61ae829ff757d113bb098266ffb4faf1aba52b1a1ee92bbe7202

    SHA512

    db8836a1a36097a85b84fc7da049d006825573c3e7255c6792107dc11fdf84a7379371aa687c4036d141af15c1b24b203cdc7eaa2eb4202a46d8dde9a4b0d506

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

    Filesize

    7KB

    MD5

    1857bb6bf510b7beb8932af0621635bb

    SHA1

    35e006a3eec3ca999857dbbec1fd37dd81242816

    SHA256

    a526e33c3ba352ee227c671995eef11ab07357271280f2e126b625505866284f

    SHA512

    26cdfae04d60b93174c2104da0bad0c6b8e8490211729274f5a92087f46200ccc600220bb559e12b1952fe909cef508a8f7f4125c7c7cb40aa7eb333b642319b

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

    Filesize

    7KB

    MD5

    73f86de0d3c79e2de5f9f2d481d69f46

    SHA1

    dd60ede6734e5209aceba77c7e69d09f02019fdd

    SHA256

    cbfff5908b16df8869b0c93c16497475d75fb2fc7f80afeda860f2b6d033ea45

    SHA512

    fb4c48746be1ead0b60c7c77737461092ae5044fc1289ad8779afb6493a394f534e44497bfd1da8c967cc3374392c07c3d3e41dd3fa1a8e48ce04b9e643fc6f5

  • \Users\Admin\AppData\Local\Temp\._cache_b264d23c08e569cfb116398ba9b68da55c929a0450795a1194c296cc307b4d65.exe

    Filesize

    483KB

    MD5

    13e2266694c6d450ed6320e775ea6ca0

    SHA1

    2a700c9c8179aec8c1f3b5e51adf064655694202

    SHA256

    14fafc8d570493d28077c853810754b4f5f7c803a58bf05456d4d197862191b4

    SHA512

    121f24d2433bd3c0b60126259e12ce2c990aef48635f5297ec37db9ce3337301408b6b2f4562936d803341c40e4f68ed51ccc05319920c8d7b0300b007d8600e

  • memory/836-62-0x00000000001D0000-0x0000000001458000-memory.dmp

    Filesize

    18.5MB

  • memory/2224-23-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2224-27-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2224-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2224-19-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2224-34-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2224-31-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2224-35-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2224-29-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2224-21-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2224-25-0x0000000000400000-0x000000000053B000-memory.dmp

    Filesize

    1.2MB

  • memory/2688-7-0x00000000060B0000-0x000000000622E000-memory.dmp

    Filesize

    1.5MB

  • memory/2688-0-0x0000000073ECE000-0x0000000073ECF000-memory.dmp

    Filesize

    4KB

  • memory/2688-38-0x0000000073EC0000-0x00000000745AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2688-6-0x0000000000260000-0x0000000000276000-memory.dmp

    Filesize

    88KB

  • memory/2688-5-0x0000000073EC0000-0x00000000745AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2688-4-0x0000000073ECE000-0x0000000073ECF000-memory.dmp

    Filesize

    4KB

  • memory/2688-3-0x00000000007F0000-0x000000000080E000-memory.dmp

    Filesize

    120KB

  • memory/2688-2-0x0000000073EC0000-0x00000000745AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2688-1-0x0000000000820000-0x0000000001AA8000-memory.dmp

    Filesize

    18.5MB