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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/09/2024, 06:57

General

  • Target

    TNT INVOICE 9.16.2024.exe

  • Size

    874KB

  • MD5

    fa85476ee938c50ec297a18b6d84ad2d

  • SHA1

    24687b69c21fdcc298fbc977548fcd34f1e7d8ee

  • SHA256

    4dd5c06062753a3522e3a1bb4a10d29639b467599913a27d77af2866dd095a32

  • SHA512

    7a486263b9de67d94b7d90c2e60c285cceaa8bfa0fb825b6aee6eafe753178316bf051b877ee797509becf59617246cea5cbcba2804fbb7f1252248508121758

  • SSDEEP

    24576:OEqKo59aqP71pME/qVt4G0PWxxtO6rO69qCVJFOxGoF:OE38bPQRVatPAA6rO6Fb

Malware Config

Extracted

Family

remcos

Botnet

IRN

C2

irnserv1.ddns.net:4424

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-CA8761

  • 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 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 2 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 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TNT INVOICE 9.16.2024.exe
    "C:\Users\Admin\AppData\Local\Temp\TNT INVOICE 9.16.2024.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4136
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fiCAFOzLq.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:224
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fiCAFOzLq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB6C.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4632
    • C:\Users\Admin\AppData\Local\Temp\TNT INVOICE 9.16.2024.exe
      "C:\Users\Admin\AppData\Local\Temp\TNT INVOICE 9.16.2024.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1788
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2112
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fiCAFOzLq.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3384
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fiCAFOzLq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp10F3.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3400
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:1116

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    d86a760caf452b240ff32c5ae5a313f7

    SHA1

    833ed0199238824ed91337e8966fc8b427fd3e0f

    SHA256

    a49fbe5f965ac5efb768174b2b12056075d95a31da4968e35d559eaf8e8166ea

    SHA512

    a68ccb364032734df13c00a725df176a303181d072f2523a4254938dc6f7f2335787c9e58c091145c08c60c303577dd0e267fcabf3c50839c37c6cf59356b105

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    874KB

    MD5

    fa85476ee938c50ec297a18b6d84ad2d

    SHA1

    24687b69c21fdcc298fbc977548fcd34f1e7d8ee

    SHA256

    4dd5c06062753a3522e3a1bb4a10d29639b467599913a27d77af2866dd095a32

    SHA512

    7a486263b9de67d94b7d90c2e60c285cceaa8bfa0fb825b6aee6eafe753178316bf051b877ee797509becf59617246cea5cbcba2804fbb7f1252248508121758

  • 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

    aac9de320baf3a964ebb70c380a32a8c

    SHA1

    520b89f00a1995158a9bc19dd4efbe13b98ffa90

    SHA256

    b209de48a579c24fd4fbb6759688f38096b10696d2200aed63efc288e9f24706

    SHA512

    ade2919fca089836a72999928cefbe8c4c2a54e391d65b05c4b71ab2e7b9ca87c48c6637b74399019f8541cf1beec901ba43515571024962cae654679a618371

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x1tgaun1.oon.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpDB6C.tmp

    Filesize

    1KB

    MD5

    3995d139594abfe3c29c7236fd65161d

    SHA1

    3dc3f8cec3cf3aaca22bc868e81a1a0f5d28ebae

    SHA256

    531cacb9aec860dcd25371548c846ef305d26b8e0f22f3f04b0aacfc158022aa

    SHA512

    9277c2f51d06c049fbd36c2f663db7c436234ddf24c8f12a8cfe20a7d7c9e3f02aacaf91055e3b52f1c742137dee9ddaaccd28f007f81f8f0bf6cb9a32b4b34f

  • memory/224-76-0x00000000071A0000-0x00000000071A8000-memory.dmp

    Filesize

    32KB

  • memory/224-54-0x0000000005C40000-0x0000000005C8C000-memory.dmp

    Filesize

    304KB

  • memory/224-79-0x0000000074910000-0x00000000750C0000-memory.dmp

    Filesize

    7.7MB

  • memory/224-75-0x00000000071C0000-0x00000000071DA000-memory.dmp

    Filesize

    104KB

  • memory/224-74-0x00000000070C0000-0x00000000070D4000-memory.dmp

    Filesize

    80KB

  • memory/224-73-0x00000000070B0000-0x00000000070BE000-memory.dmp

    Filesize

    56KB

  • memory/224-16-0x00000000021D0000-0x0000000002206000-memory.dmp

    Filesize

    216KB

  • memory/224-18-0x0000000004C70000-0x0000000005298000-memory.dmp

    Filesize

    6.2MB

  • memory/224-17-0x0000000074910000-0x00000000750C0000-memory.dmp

    Filesize

    7.7MB

  • memory/224-72-0x0000000007080000-0x0000000007091000-memory.dmp

    Filesize

    68KB

  • memory/224-20-0x0000000074910000-0x00000000750C0000-memory.dmp

    Filesize

    7.7MB

  • memory/224-23-0x0000000005380000-0x00000000053E6000-memory.dmp

    Filesize

    408KB

  • memory/224-21-0x0000000004B00000-0x0000000004B22000-memory.dmp

    Filesize

    136KB

  • memory/224-22-0x0000000005310000-0x0000000005376000-memory.dmp

    Filesize

    408KB

  • memory/224-71-0x0000000007100000-0x0000000007196000-memory.dmp

    Filesize

    600KB

  • memory/224-70-0x0000000006F00000-0x0000000006F0A000-memory.dmp

    Filesize

    40KB

  • memory/224-34-0x0000000074910000-0x00000000750C0000-memory.dmp

    Filesize

    7.7MB

  • memory/224-36-0x00000000054B0000-0x0000000005804000-memory.dmp

    Filesize

    3.3MB

  • memory/224-68-0x00000000074D0000-0x0000000007B4A000-memory.dmp

    Filesize

    6.5MB

  • memory/224-69-0x0000000006E80000-0x0000000006E9A000-memory.dmp

    Filesize

    104KB

  • memory/224-67-0x0000000006D80000-0x0000000006E23000-memory.dmp

    Filesize

    652KB

  • memory/224-66-0x00000000060F0000-0x000000000610E000-memory.dmp

    Filesize

    120KB

  • memory/224-56-0x0000000071070000-0x00000000710BC000-memory.dmp

    Filesize

    304KB

  • memory/224-55-0x0000000006B40000-0x0000000006B72000-memory.dmp

    Filesize

    200KB

  • memory/224-53-0x0000000005B60000-0x0000000005B7E000-memory.dmp

    Filesize

    120KB

  • memory/1116-87-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-121-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-172-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-189-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-173-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-175-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-176-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-177-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-187-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-186-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-179-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-180-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-181-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-160-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-183-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-184-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-190-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-138-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-90-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-169-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-191-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-167-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-166-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-165-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-163-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-162-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-118-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-119-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-170-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-122-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-124-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-125-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-127-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-128-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-129-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-131-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-132-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-133-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-193-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-135-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-136-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-139-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-141-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-142-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-144-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-145-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-146-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-148-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-149-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-150-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-152-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-153-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-155-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-156-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-158-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1116-159-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1788-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1788-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1788-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1788-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1788-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3384-100-0x0000000005BD0000-0x0000000005F24000-memory.dmp

    Filesize

    3.3MB

  • memory/3384-114-0x0000000007170000-0x0000000007213000-memory.dmp

    Filesize

    652KB

  • memory/3384-116-0x0000000007690000-0x00000000076A4000-memory.dmp

    Filesize

    80KB

  • memory/3384-115-0x0000000007650000-0x0000000007661000-memory.dmp

    Filesize

    68KB

  • memory/3384-103-0x0000000006160000-0x00000000061AC000-memory.dmp

    Filesize

    304KB

  • memory/3384-104-0x00000000733E0000-0x000000007342C000-memory.dmp

    Filesize

    304KB

  • memory/4136-10-0x0000000006970000-0x0000000006A30000-memory.dmp

    Filesize

    768KB

  • memory/4136-52-0x0000000074910000-0x00000000750C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4136-11-0x0000000008FB0000-0x000000000904C000-memory.dmp

    Filesize

    624KB

  • memory/4136-0-0x000000007491E000-0x000000007491F000-memory.dmp

    Filesize

    4KB

  • memory/4136-9-0x0000000074910000-0x00000000750C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4136-8-0x000000007491E000-0x000000007491F000-memory.dmp

    Filesize

    4KB

  • memory/4136-7-0x0000000005170000-0x000000000517E000-memory.dmp

    Filesize

    56KB

  • memory/4136-6-0x0000000006410000-0x00000000064E4000-memory.dmp

    Filesize

    848KB

  • memory/4136-5-0x0000000074910000-0x00000000750C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4136-4-0x0000000004AA0000-0x0000000004AAA000-memory.dmp

    Filesize

    40KB

  • memory/4136-3-0x0000000004AD0000-0x0000000004B62000-memory.dmp

    Filesize

    584KB

  • memory/4136-2-0x0000000005180000-0x0000000005724000-memory.dmp

    Filesize

    5.6MB

  • memory/4136-1-0x0000000000020000-0x0000000000100000-memory.dmp

    Filesize

    896KB