Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-01-2025 02:55

General

  • Target

    b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f.exe

  • Size

    964KB

  • MD5

    a2800b58845d5f108333e9f7f9c388dd

  • SHA1

    1a1ce9b83de9d2e967a539aabeafdab36dbb626a

  • SHA256

    b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f

  • SHA512

    150a651055ac9c697a2132eda8a24f8f1af58d37d8a140356afd24bff629307404691213d04db92ed5948f9f47d9ac0e3e7cea72903984d1ca4b336ccbf2c23f

  • SSDEEP

    24576:FzrqD+VnGOgUL+oMIk2W/PpOlL46TFJtV:BqyVnCUaLnZONbTFJX

Malware Config

Extracted

Family

remcos

Botnet

RemcoHost

C2

173.211.106.233:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-4WOIVV

  • 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.

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 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).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f.exe
    "C:\Users\Admin\AppData\Local\Temp\b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3024
    • 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\b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3116
    • C:\Users\Admin\AppData\Local\Temp\b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f.exe
      "C:\Users\Admin\AppData\Local\Temp\b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3676

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ol0awzg0.uom.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/3024-6-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3024-2-0x0000000005D10000-0x00000000062B4000-memory.dmp

    Filesize

    5.6MB

  • memory/3024-3-0x0000000005760000-0x00000000057F2000-memory.dmp

    Filesize

    584KB

  • memory/3024-4-0x0000000005900000-0x000000000590A000-memory.dmp

    Filesize

    40KB

  • memory/3024-5-0x0000000005A60000-0x0000000005AFC000-memory.dmp

    Filesize

    624KB

  • memory/3024-21-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3024-7-0x0000000006B10000-0x0000000006B28000-memory.dmp

    Filesize

    96KB

  • memory/3024-8-0x000000007492E000-0x000000007492F000-memory.dmp

    Filesize

    4KB

  • memory/3024-9-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3024-10-0x0000000006D10000-0x0000000006DD4000-memory.dmp

    Filesize

    784KB

  • memory/3024-0-0x000000007492E000-0x000000007492F000-memory.dmp

    Filesize

    4KB

  • memory/3024-1-0x0000000000C70000-0x0000000000D66000-memory.dmp

    Filesize

    984KB

  • memory/3116-63-0x00000000071F0000-0x00000000071F8000-memory.dmp

    Filesize

    32KB

  • memory/3116-54-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3116-66-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3116-62-0x0000000007210000-0x000000000722A000-memory.dmp

    Filesize

    104KB

  • memory/3116-18-0x000000007492E000-0x000000007492F000-memory.dmp

    Filesize

    4KB

  • memory/3116-61-0x0000000007110000-0x0000000007124000-memory.dmp

    Filesize

    80KB

  • memory/3116-20-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3116-23-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3116-22-0x0000000004EC0000-0x00000000054E8000-memory.dmp

    Filesize

    6.2MB

  • memory/3116-19-0x0000000002290000-0x00000000022C6000-memory.dmp

    Filesize

    216KB

  • memory/3116-24-0x0000000004BE0000-0x0000000004C02000-memory.dmp

    Filesize

    136KB

  • memory/3116-60-0x0000000007100000-0x000000000710E000-memory.dmp

    Filesize

    56KB

  • memory/3116-31-0x0000000005560000-0x00000000055C6000-memory.dmp

    Filesize

    408KB

  • memory/3116-25-0x00000000054F0000-0x0000000005556000-memory.dmp

    Filesize

    408KB

  • memory/3116-36-0x00000000056D0000-0x0000000005A24000-memory.dmp

    Filesize

    3.3MB

  • memory/3116-37-0x0000000005B70000-0x0000000005B8E000-memory.dmp

    Filesize

    120KB

  • memory/3116-38-0x0000000005C30000-0x0000000005C7C000-memory.dmp

    Filesize

    304KB

  • memory/3116-41-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3116-40-0x0000000071210000-0x000000007125C000-memory.dmp

    Filesize

    304KB

  • memory/3116-51-0x0000000006130000-0x000000000614E000-memory.dmp

    Filesize

    120KB

  • memory/3116-39-0x0000000006170000-0x00000000061A2000-memory.dmp

    Filesize

    200KB

  • memory/3116-52-0x0000000006BA0000-0x0000000006C43000-memory.dmp

    Filesize

    652KB

  • memory/3116-53-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3116-59-0x00000000070D0000-0x00000000070E1000-memory.dmp

    Filesize

    68KB

  • memory/3116-56-0x0000000004910000-0x000000000492A000-memory.dmp

    Filesize

    104KB

  • memory/3116-55-0x00000000074F0000-0x0000000007B6A000-memory.dmp

    Filesize

    6.5MB

  • memory/3116-57-0x0000000006F40000-0x0000000006F4A000-memory.dmp

    Filesize

    40KB

  • memory/3116-58-0x0000000007150000-0x00000000071E6000-memory.dmp

    Filesize

    600KB

  • memory/3676-69-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-79-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-17-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-15-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-11-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-16-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-67-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-68-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-14-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-12-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-72-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-71-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-73-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-74-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-75-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-76-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-77-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-78-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3676-70-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB