Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2024 17:00

General

  • Target

    CIF0983745DOC.exe

  • Size

    955KB

  • MD5

    52c642cdb7298bb11558da681d352978

  • SHA1

    5ffacf37fb2e05b0c7078f89554e949afd369318

  • SHA256

    b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7

  • SHA512

    daf8b97540c58b58a86a2e73fc907ced0ba332d19811047491d59ae40ce53dc9ed613773b107da5fb8d96b59c1247a18b35eb5fbe4c8be2b016f65a80594f7d0

  • SSDEEP

    24576:0IeeIW8rjYO/CjNIvTc4ST4AWptCaWaZldbmi+3I:0BeBLhIvwHkB7CfaNdc

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

ddpo.duckdns.org:59033

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-NUED7N

  • 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\CIF0983745DOC.exe
    "C:\Users\Admin\AppData\Local\Temp\CIF0983745DOC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2808
    • 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\CIF0983745DOC.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1520
    • C:\Users\Admin\AppData\Local\Temp\CIF0983745DOC.exe
      "C:\Users\Admin\AppData\Local\Temp\CIF0983745DOC.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0mujb2kd.vf0.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1520-60-0x0000000007830000-0x000000000783E000-memory.dmp

    Filesize

    56KB

  • memory/1520-62-0x0000000007930000-0x000000000794A000-memory.dmp

    Filesize

    104KB

  • memory/1520-38-0x00000000062D0000-0x000000000631C000-memory.dmp

    Filesize

    304KB

  • memory/1520-66-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-40-0x0000000070F60000-0x0000000070FAC000-memory.dmp

    Filesize

    304KB

  • memory/1520-63-0x0000000007920000-0x0000000007928000-memory.dmp

    Filesize

    32KB

  • memory/1520-61-0x0000000007840000-0x0000000007854000-memory.dmp

    Filesize

    80KB

  • memory/1520-59-0x0000000007800000-0x0000000007811000-memory.dmp

    Filesize

    68KB

  • memory/1520-58-0x0000000007860000-0x00000000078F6000-memory.dmp

    Filesize

    600KB

  • memory/1520-57-0x0000000007650000-0x000000000765A000-memory.dmp

    Filesize

    40KB

  • memory/1520-56-0x0000000006990000-0x00000000069AA000-memory.dmp

    Filesize

    104KB

  • memory/1520-55-0x0000000007C80000-0x00000000082FA000-memory.dmp

    Filesize

    6.5MB

  • memory/1520-54-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-53-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-17-0x000000007477E000-0x000000007477F000-memory.dmp

    Filesize

    4KB

  • memory/1520-19-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-20-0x0000000002990000-0x00000000029C6000-memory.dmp

    Filesize

    216KB

  • memory/1520-52-0x0000000007550000-0x00000000075F3000-memory.dmp

    Filesize

    652KB

  • memory/1520-50-0x0000000006830000-0x000000000684E000-memory.dmp

    Filesize

    120KB

  • memory/1520-51-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-22-0x0000000005580000-0x0000000005BA8000-memory.dmp

    Filesize

    6.2MB

  • memory/1520-23-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-24-0x00000000051F0000-0x0000000005212000-memory.dmp

    Filesize

    136KB

  • memory/1520-25-0x0000000005510000-0x0000000005576000-memory.dmp

    Filesize

    408KB

  • memory/1520-39-0x00000000067D0000-0x0000000006802000-memory.dmp

    Filesize

    200KB

  • memory/1520-26-0x0000000005C60000-0x0000000005CC6000-memory.dmp

    Filesize

    408KB

  • memory/1520-36-0x0000000005CD0000-0x0000000006024000-memory.dmp

    Filesize

    3.3MB

  • memory/1520-37-0x0000000006290000-0x00000000062AE000-memory.dmp

    Filesize

    120KB

  • memory/2808-8-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/2808-0-0x000000007477E000-0x000000007477F000-memory.dmp

    Filesize

    4KB

  • memory/2808-1-0x0000000000AC0000-0x0000000000BB4000-memory.dmp

    Filesize

    976KB

  • memory/2808-7-0x000000007477E000-0x000000007477F000-memory.dmp

    Filesize

    4KB

  • memory/2808-18-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/2808-4-0x0000000005520000-0x000000000552A000-memory.dmp

    Filesize

    40KB

  • memory/2808-6-0x0000000005750000-0x0000000005768000-memory.dmp

    Filesize

    96KB

  • memory/2808-3-0x0000000005450000-0x00000000054E2000-memory.dmp

    Filesize

    584KB

  • memory/2808-2-0x0000000005AF0000-0x0000000006094000-memory.dmp

    Filesize

    5.6MB

  • memory/2808-5-0x0000000074770000-0x0000000074F20000-memory.dmp

    Filesize

    7.7MB

  • memory/2808-10-0x0000000008FF0000-0x000000000908C000-memory.dmp

    Filesize

    624KB

  • memory/2808-9-0x0000000006980000-0x0000000006A44000-memory.dmp

    Filesize

    784KB

  • memory/4564-78-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-70-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-13-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-16-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-15-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-67-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-68-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-69-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-11-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-71-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-72-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-73-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-74-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-75-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-76-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-77-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4564-12-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB