Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-08-2024 01:05

General

  • Target

    322c8e0ba72b41a9ee9ebdeeb1b1d71cefd9ed9674e285efed105c0918834b24.exe

  • Size

    910KB

  • MD5

    129ab29e55efb205471261bc48380372

  • SHA1

    75670ebbf86906138538caad68b5a75f17097be3

  • SHA256

    322c8e0ba72b41a9ee9ebdeeb1b1d71cefd9ed9674e285efed105c0918834b24

  • SHA512

    8020ed1d32fce5d9931da0e52b501c985de294c323a3d70a1f3873642f1a323f79479d555ddb5c2991d68c4300cbb95607e7582f42213080798a8d9de78a70e9

  • SSDEEP

    24576:qzKGObd+rcjuV/B1mV4uhB4tqyJy70oRXr85ABIxWD:qzKGOorcc8Q5k70o5g58Ixc

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.243.155:7643

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-C9YEJ8

  • 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 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.

  • 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).

  • 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\322c8e0ba72b41a9ee9ebdeeb1b1d71cefd9ed9674e285efed105c0918834b24.exe
    "C:\Users\Admin\AppData\Local\Temp\322c8e0ba72b41a9ee9ebdeeb1b1d71cefd9ed9674e285efed105c0918834b24.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1164
    • 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\322c8e0ba72b41a9ee9ebdeeb1b1d71cefd9ed9674e285efed105c0918834b24.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2892
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kkUfsLDbd.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4344
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kkUfsLDbd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA112.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2648
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    56bdaf0e4c88d3f6ffb447f9ebf2e475

    SHA1

    838afeef08983c5d32575876c9238dd3af453aa0

    SHA256

    387111494ac94b31a6541bc8f91bb6fade210d4eff4aa6323c4f06e75ae5f5f8

    SHA512

    eff703c5e5e2df4297f63e16a14528d7d18f14119aa933a33273dbc091d45c8649c75265a1e18ccfd0eed8446a50e86193468d70779bbf84f813fa6b32977a0f

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gc5huvbc.3q0.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA112.tmp

    Filesize

    1KB

    MD5

    ed725fe5ac06ca253bd0925d2c28d3b7

    SHA1

    bfd4fffba72b2d256e08adac8fcc4615c8ea75f0

    SHA256

    cae53a43519957492c8ba478d860d1849fad3eb430c398319280c38073ef17ea

    SHA512

    8b3661a21a4e279f8866199a04eb26a6e592f63e71c39450296728a9e8d1344984474c50c4f0296ea8f49dc2bea3c9608e339b1f10d5a417e698ef047b466a90

  • memory/1164-6-0x0000000005630000-0x000000000564E000-memory.dmp

    Filesize

    120KB

  • memory/1164-4-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1164-5-0x0000000005050000-0x000000000505A000-memory.dmp

    Filesize

    40KB

  • memory/1164-3-0x00000000050D0000-0x0000000005162000-memory.dmp

    Filesize

    584KB

  • memory/1164-7-0x0000000005660000-0x0000000005676000-memory.dmp

    Filesize

    88KB

  • memory/1164-8-0x0000000008870000-0x0000000008930000-memory.dmp

    Filesize

    768KB

  • memory/1164-9-0x00000000089D0000-0x0000000008A6C000-memory.dmp

    Filesize

    624KB

  • memory/1164-2-0x0000000005680000-0x0000000005C24000-memory.dmp

    Filesize

    5.6MB

  • memory/1164-34-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1164-0-0x0000000074E4E000-0x0000000074E4F000-memory.dmp

    Filesize

    4KB

  • memory/1164-1-0x0000000000560000-0x000000000064A000-memory.dmp

    Filesize

    936KB

  • memory/2892-22-0x0000000006010000-0x0000000006076000-memory.dmp

    Filesize

    408KB

  • memory/2892-93-0x0000000007CF0000-0x0000000007D0A000-memory.dmp

    Filesize

    104KB

  • memory/2892-20-0x00000000056E0000-0x0000000005702000-memory.dmp

    Filesize

    136KB

  • memory/2892-16-0x0000000005780000-0x0000000005DA8000-memory.dmp

    Filesize

    6.2MB

  • memory/2892-97-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-94-0x0000000007CD0000-0x0000000007CD8000-memory.dmp

    Filesize

    32KB

  • memory/2892-15-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-35-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-14-0x00000000050E0000-0x0000000005116000-memory.dmp

    Filesize

    216KB

  • memory/2892-18-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/2892-92-0x0000000007BF0000-0x0000000007C04000-memory.dmp

    Filesize

    80KB

  • memory/2892-90-0x0000000007BB0000-0x0000000007BC1000-memory.dmp

    Filesize

    68KB

  • memory/2892-32-0x0000000006090000-0x00000000063E4000-memory.dmp

    Filesize

    3.3MB

  • memory/2892-86-0x00000000079B0000-0x00000000079CA000-memory.dmp

    Filesize

    104KB

  • memory/2892-85-0x00000000078C0000-0x0000000007963000-memory.dmp

    Filesize

    652KB

  • memory/2892-64-0x0000000071630000-0x000000007167C000-memory.dmp

    Filesize

    304KB

  • memory/2892-59-0x0000000006BE0000-0x0000000006C2C000-memory.dmp

    Filesize

    304KB

  • memory/2892-56-0x0000000006690000-0x00000000066AE000-memory.dmp

    Filesize

    120KB

  • memory/2892-63-0x0000000007680000-0x00000000076B2000-memory.dmp

    Filesize

    200KB

  • memory/2892-21-0x0000000005EB0000-0x0000000005F16000-memory.dmp

    Filesize

    408KB

  • memory/4068-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-105-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-134-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-133-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-126-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-125-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-118-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-117-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-110-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-109-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4068-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4344-98-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4344-19-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4344-36-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4344-91-0x0000000007360000-0x000000000736E000-memory.dmp

    Filesize

    56KB

  • memory/4344-33-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4344-89-0x00000000073B0000-0x0000000007446000-memory.dmp

    Filesize

    600KB

  • memory/4344-88-0x00000000071A0000-0x00000000071AA000-memory.dmp

    Filesize

    40KB

  • memory/4344-87-0x0000000007770000-0x0000000007DEA000-memory.dmp

    Filesize

    6.5MB

  • memory/4344-84-0x0000000006D70000-0x0000000006D8E000-memory.dmp

    Filesize

    120KB

  • memory/4344-65-0x0000000071630000-0x000000007167C000-memory.dmp

    Filesize

    304KB