Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    18-05-2024 01:32

General

  • Target

    f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220.exe

  • Size

    1.5MB

  • MD5

    eb6fbf94ac91b528b6c2fef7c6dd79af

  • SHA1

    4f5079f8402b5a935cc9dcf2fd02ee98dabf95ed

  • SHA256

    f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220

  • SHA512

    2078931c8643f000560734eec6d73b88382f16e9a5db6a48e151e0bee9cbd53f87384bd8731b248eb8e446a1cedf2041e81528fe5a73bf07a800f6b5c76696b2

  • SSDEEP

    24576:jElEJSNI3rQ9891j8F1Oo/42VuKZWaKoPDfK6Dy6pPnltz1k:QlSaI3ruUjCT/huroPVy65lh1

Malware Config

Extracted

Family

remcos

Botnet

Remcoco

C2

173.212.199.134:8808

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-PMP82R

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 52 IoCs
  • 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.

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220.exe
    "C:\Users\Admin\AppData\Local\Temp\f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2600
    • 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\f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2428
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OvSlUx.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2968
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OvSlUx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEFBC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1708
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:1356

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      1KB

      MD5

      3b4f31895b4706c695f6cf879880dd52

      SHA1

      270f42e2307716910de8bff5067bec985f082712

      SHA256

      34c754a7fbba6d3c2bbf3209529e46643a0909a090ea81266d366df17e31aabe

      SHA512

      206e34261516fd416cdd898b68293288816204647f6a9dfdadee0ac038a7c8b8ed7926f4cae6e2f17a00bdf0c090adb99b2f3ca68e916627f20b913b62b4030a

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\LHVFNDFDRY30HRI6DQIZ.temp

      Filesize

      7KB

      MD5

      060a857bef6b7b298fa7c6b695adffdb

      SHA1

      aec7db6d090b43cd2dee7706541bae90c511fd7e

      SHA256

      95605642d7da2bbfc5cd4595164abe489ed9d3fc2dacefe3ffaf34a96a6cc237

      SHA512

      03b13e2f95ed191b1d0174239d7f163ac84e2f1828b71966bbdbe947d431c4a00f5dfb7b9729c71e440067fbff269bebbcd88f26722c67fc1e70ea736fdcf866

    • memory/1356-50-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-69-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-38-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-84-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-83-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-52-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-40-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-36-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

      Filesize

      4KB

    • memory/1356-34-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-32-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-28-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-26-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-24-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-53-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-20-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-39-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-82-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-81-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-80-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-79-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-78-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-77-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-42-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-43-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-44-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-54-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-46-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-47-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-48-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-49-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-30-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-51-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-76-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-22-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-45-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-55-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-56-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-57-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-58-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-59-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-60-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-61-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-62-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-63-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-64-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-65-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-66-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-67-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-68-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-37-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-70-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-71-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-72-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-73-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-74-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1356-75-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2600-2-0x0000000074940000-0x000000007502E000-memory.dmp

      Filesize

      6.9MB

    • memory/2600-41-0x0000000074940000-0x000000007502E000-memory.dmp

      Filesize

      6.9MB

    • memory/2600-7-0x0000000074940000-0x000000007502E000-memory.dmp

      Filesize

      6.9MB

    • memory/2600-6-0x000000007494E000-0x000000007494F000-memory.dmp

      Filesize

      4KB

    • memory/2600-5-0x00000000056F0000-0x00000000057B0000-memory.dmp

      Filesize

      768KB

    • memory/2600-4-0x0000000000440000-0x0000000000450000-memory.dmp

      Filesize

      64KB

    • memory/2600-3-0x0000000000420000-0x000000000043E000-memory.dmp

      Filesize

      120KB

    • memory/2600-1-0x0000000000CC0000-0x0000000000E3C000-memory.dmp

      Filesize

      1.5MB

    • memory/2600-0-0x000000007494E000-0x000000007494F000-memory.dmp

      Filesize

      4KB