Analysis

  • max time kernel
    133s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 01:36

General

  • Target

    869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe

  • Size

    604KB

  • MD5

    ffc880a6448b251eee7f03809bf0a1bf

  • SHA1

    09e75e38d588b0e99a3f6f85b2dc4a3eebe4ee08

  • SHA256

    869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d

  • SHA512

    21dbc92495d2afa76e2e0b7243586ce70889e6cf1240222f1c75aab217df9a0287f9b9b5f3c754011ecfec411c2677c3fd091bcb2b620205c2c97db564b7b180

  • SSDEEP

    12288:O+DbgZB778Qed59T3C6g9XltKMYicJgTx5bx4OVEIHDe2RZQioKEAmD:3gZBS9TbgoMpcJ+Tbe7Ye2nOK

Score
10/10

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

NHS

C2

185.189.112.19:30311

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    nhs

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_lejjhxgdnt

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • detects Windows exceutables potentially bypassing UAC using eventvwr.exe 3 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe
    "C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2404
    • 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\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4228
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RqlVhjJtK.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2068
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RqlVhjJtK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAF5A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2220
    • C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe
      "C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
      2⤵
        PID:1744
      • C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe
        "C:\Users\Admin\AppData\Local\Temp\869d82f75b419b649177813ee10ff71987aa775e0c86868bb952aab22f6fe91d.exe"
        2⤵
        • Suspicious use of SetWindowsHookEx
        PID:1924

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      7bcf162b8529f565ad866463e8c6ed3c

      SHA1

      1cfa2d9c929c81b6cf5c6af832652a05678475bc

      SHA256

      25bf8b2553db4f6adb2b37bb42cac9e94821cab62f697f9d0a3bcfa50a721860

      SHA512

      ca944836c66eeae5c99f57b5fc3100f869e702f201f9b2389a5032ba46ac4e4df2e4b230e71d800d473491379a619f18e0825e259474149471ebafb14313c671

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_un2taqyk.gsx.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpAF5A.tmp

      Filesize

      1KB

      MD5

      48dba5f1febc6002981085b1b2da44d7

      SHA1

      1148b061e4f0e943eecbf0c07acae582bcffe220

      SHA256

      7fe7f7a3fdeaac9305d4157dd4cc8e8a1dd91ea98d1fd6b934f559bd71a37dec

      SHA512

      1b0a50c30282a5b717a4f343b7491fa6f54d0b3d91b883e51502b8c738b18c7c2b93693924aca540c739c65c18ae5a174a8fc11d47d6f258d95f778b989ed895

    • memory/1924-48-0x0000000000400000-0x0000000000417000-memory.dmp

      Filesize

      92KB

    • memory/1924-49-0x0000000000400000-0x0000000000417000-memory.dmp

      Filesize

      92KB

    • memory/1924-47-0x0000000000400000-0x0000000000417000-memory.dmp

      Filesize

      92KB

    • memory/2068-80-0x0000000006CD0000-0x0000000006CEA000-memory.dmp

      Filesize

      104KB

    • memory/2068-79-0x0000000007310000-0x000000000798A000-memory.dmp

      Filesize

      6.5MB

    • memory/2068-94-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2068-87-0x0000000006FF0000-0x0000000006FF8000-memory.dmp

      Filesize

      32KB

    • memory/2068-84-0x0000000006F00000-0x0000000006F0E000-memory.dmp

      Filesize

      56KB

    • memory/2068-81-0x0000000006D40000-0x0000000006D4A000-memory.dmp

      Filesize

      40KB

    • memory/2068-67-0x0000000006B80000-0x0000000006B9E000-memory.dmp

      Filesize

      120KB

    • memory/2068-56-0x0000000006B40000-0x0000000006B72000-memory.dmp

      Filesize

      200KB

    • memory/2068-57-0x0000000075AB0000-0x0000000075AFC000-memory.dmp

      Filesize

      304KB

    • memory/2068-27-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2068-22-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2404-11-0x000000007522E000-0x000000007522F000-memory.dmp

      Filesize

      4KB

    • memory/2404-9-0x0000000006A30000-0x0000000006A90000-memory.dmp

      Filesize

      384KB

    • memory/2404-2-0x0000000005C80000-0x0000000006224000-memory.dmp

      Filesize

      5.6MB

    • memory/2404-10-0x0000000009200000-0x000000000929C000-memory.dmp

      Filesize

      624KB

    • memory/2404-12-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2404-8-0x0000000005BB0000-0x0000000005BC6000-memory.dmp

      Filesize

      88KB

    • memory/2404-0-0x000000007522E000-0x000000007522F000-memory.dmp

      Filesize

      4KB

    • memory/2404-5-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2404-4-0x0000000005760000-0x000000000576A000-memory.dmp

      Filesize

      40KB

    • memory/2404-3-0x0000000005770000-0x0000000005802000-memory.dmp

      Filesize

      584KB

    • memory/2404-53-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2404-6-0x0000000005A60000-0x0000000005A78000-memory.dmp

      Filesize

      96KB

    • memory/2404-7-0x0000000005BA0000-0x0000000005BAE000-memory.dmp

      Filesize

      56KB

    • memory/2404-1-0x0000000000CC0000-0x0000000000D5C000-memory.dmp

      Filesize

      624KB

    • memory/4228-19-0x00000000051A0000-0x00000000057C8000-memory.dmp

      Filesize

      6.2MB

    • memory/4228-24-0x0000000005110000-0x0000000005132000-memory.dmp

      Filesize

      136KB

    • memory/4228-21-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4228-83-0x0000000007600000-0x0000000007611000-memory.dmp

      Filesize

      68KB

    • memory/4228-78-0x0000000007320000-0x00000000073C3000-memory.dmp

      Filesize

      652KB

    • memory/4228-68-0x0000000075AB0000-0x0000000075AFC000-memory.dmp

      Filesize

      304KB

    • memory/4228-28-0x0000000005B40000-0x0000000005E94000-memory.dmp

      Filesize

      3.3MB

    • memory/4228-54-0x00000000060E0000-0x00000000060FE000-memory.dmp

      Filesize

      120KB

    • memory/4228-82-0x0000000007680000-0x0000000007716000-memory.dmp

      Filesize

      600KB

    • memory/4228-25-0x0000000005840000-0x00000000058A6000-memory.dmp

      Filesize

      408KB

    • memory/4228-17-0x0000000004B10000-0x0000000004B46000-memory.dmp

      Filesize

      216KB

    • memory/4228-85-0x0000000007640000-0x0000000007654000-memory.dmp

      Filesize

      80KB

    • memory/4228-86-0x0000000007740000-0x000000000775A000-memory.dmp

      Filesize

      104KB

    • memory/4228-20-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4228-26-0x00000000059B0000-0x0000000005A16000-memory.dmp

      Filesize

      408KB

    • memory/4228-18-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4228-93-0x0000000075220000-0x00000000759D0000-memory.dmp

      Filesize

      7.7MB

    • memory/4228-55-0x0000000006700000-0x000000000674C000-memory.dmp

      Filesize

      304KB