Analysis

  • max time kernel
    150s
  • 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
    04/10/2024, 05:57

General

  • Target

    673d693b0c8b68503d64ed15fd863d61.exe

  • Size

    1017KB

  • MD5

    673d693b0c8b68503d64ed15fd863d61

  • SHA1

    4fb6b11e933354b9f7c5bda096543a5d6b56ff83

  • SHA256

    a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4

  • SHA512

    3996083d6b2f207e742a81a1dd11277c1bdb2631438a0ee72eeec88a57ff39fb2a7c9a100b30bc2839519c3019129d2157e89d6ade8cc326c4073daf4cc2bd27

  • SSDEEP

    24576:myN887MU2cPnNupjbW/5OheoofVmhGmfCtquly:myNVQUPNudihOhRdhHIqul

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 4 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\673d693b0c8b68503d64ed15fd863d61.exe
    "C:\Users\Admin\AppData\Local\Temp\673d693b0c8b68503d64ed15fd863d61.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4552
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mDBLQPaU.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1400
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mDBLQPaU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA3B2.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3404
    • C:\Users\Admin\AppData\Local\Temp\673d693b0c8b68503d64ed15fd863d61.exe
      "C:\Users\Admin\AppData\Local\Temp\673d693b0c8b68503d64ed15fd863d61.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3580
      • 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 behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:648
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mDBLQPaU.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4264
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mDBLQPaU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDA33.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3000
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:5100
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:860
        • 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:2104

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    ff514dfdc9406b6ef3e78f3c6dcc82b3

    SHA1

    94138f58512b60d4c3674715b8f22709eb5c8c05

    SHA256

    637dc4c4921b1d86033120731403a82c28e87d52da489bb90e2878cb4ad488d7

    SHA512

    1df585ca0b82122c90b9a9c99659a94c1c9318ce50a1acdf815c349b904f972f8453987ade03f1ebc7f073acdde301a377c976230b2ca2ba9777df93c8a87a76

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    1017KB

    MD5

    673d693b0c8b68503d64ed15fd863d61

    SHA1

    4fb6b11e933354b9f7c5bda096543a5d6b56ff83

    SHA256

    a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4

    SHA512

    3996083d6b2f207e742a81a1dd11277c1bdb2631438a0ee72eeec88a57ff39fb2a7c9a100b30bc2839519c3019129d2157e89d6ade8cc326c4073daf4cc2bd27

  • 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

    9fec507c81cee365ffabb0b01643ee05

    SHA1

    6e12bab9844df1b078ecc0458fc237410a8aff6c

    SHA256

    10d262e304d623da125dda0cb5f50ddab1cfdfbf563a96f32a1d89a212dc72d0

    SHA512

    7baa3d55c426104b025aa0b4fd729b6d12cc8110655ff902a8b40bf2448724e8969a39ea38b1d66694680c3d2df0b840a8af3bd10ad10b3f1a099176e5175747

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dqht01o5.uwr.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA3B2.tmp

    Filesize

    1KB

    MD5

    9b60a993d2a2e887611bcaf622672d4d

    SHA1

    d7f81a31ab58bcfc1e3cffd988715d17e6149731

    SHA256

    ca98d5fb297391398486d4ebdde189d0fe72e4ab1806120556f5db67987a6d20

    SHA512

    85f8d16b395ac1e28f7e30b34b50c19cd2d3bfcf09122dcb75cee8608047530d706eb14fff47d96c671beb09d7ea1d5257c0c447329c77f5ac50deb75e80dc2a

  • memory/1400-73-0x0000000007480000-0x0000000007494000-memory.dmp

    Filesize

    80KB

  • memory/1400-66-0x0000000007110000-0x00000000071B3000-memory.dmp

    Filesize

    652KB

  • memory/1400-72-0x0000000007470000-0x000000000747E000-memory.dmp

    Filesize

    56KB

  • memory/1400-71-0x0000000007440000-0x0000000007451000-memory.dmp

    Filesize

    68KB

  • memory/1400-70-0x00000000074C0000-0x0000000007556000-memory.dmp

    Filesize

    600KB

  • memory/1400-15-0x00000000048F0000-0x0000000004926000-memory.dmp

    Filesize

    216KB

  • memory/1400-74-0x0000000007580000-0x000000000759A000-memory.dmp

    Filesize

    104KB

  • memory/1400-18-0x0000000004FB0000-0x00000000055D8000-memory.dmp

    Filesize

    6.2MB

  • memory/1400-17-0x0000000075180000-0x0000000075930000-memory.dmp

    Filesize

    7.7MB

  • memory/1400-19-0x0000000075180000-0x0000000075930000-memory.dmp

    Filesize

    7.7MB

  • memory/1400-69-0x00000000072B0000-0x00000000072BA000-memory.dmp

    Filesize

    40KB

  • memory/1400-67-0x0000000007880000-0x0000000007EFA000-memory.dmp

    Filesize

    6.5MB

  • memory/1400-68-0x0000000007240000-0x000000000725A000-memory.dmp

    Filesize

    104KB

  • memory/1400-55-0x0000000073C30000-0x0000000073C7C000-memory.dmp

    Filesize

    304KB

  • memory/1400-30-0x0000000005870000-0x0000000005BC4000-memory.dmp

    Filesize

    3.3MB

  • memory/1400-75-0x0000000007560000-0x0000000007568000-memory.dmp

    Filesize

    32KB

  • memory/1400-65-0x00000000064D0000-0x00000000064EE000-memory.dmp

    Filesize

    120KB

  • memory/1400-27-0x0000000075180000-0x0000000075930000-memory.dmp

    Filesize

    7.7MB

  • memory/1400-26-0x0000000005720000-0x0000000005786000-memory.dmp

    Filesize

    408KB

  • memory/1400-25-0x00000000056B0000-0x0000000005716000-memory.dmp

    Filesize

    408KB

  • memory/1400-23-0x0000000005610000-0x0000000005632000-memory.dmp

    Filesize

    136KB

  • memory/1400-78-0x0000000075180000-0x0000000075930000-memory.dmp

    Filesize

    7.7MB

  • memory/1400-54-0x00000000070D0000-0x0000000007102000-memory.dmp

    Filesize

    200KB

  • memory/1400-52-0x0000000005F00000-0x0000000005F1E000-memory.dmp

    Filesize

    120KB

  • memory/1400-53-0x0000000005F90000-0x0000000005FDC000-memory.dmp

    Filesize

    304KB

  • memory/2104-150-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-160-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-183-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-182-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-180-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-179-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-178-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-177-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-176-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-174-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-173-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-172-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-171-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-170-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-168-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-92-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-167-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-93-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-166-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-165-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-105-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-163-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-162-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-161-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-159-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-119-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-121-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-122-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-123-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-125-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-126-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-127-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-129-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-130-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-131-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-132-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-133-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-135-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-136-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-137-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-138-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-139-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-141-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-142-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-143-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-144-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-145-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-157-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-147-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-148-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-149-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-156-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-151-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-153-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-154-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2104-155-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3580-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3580-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3580-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3580-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3580-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4264-118-0x0000000007D20000-0x0000000007D34000-memory.dmp

    Filesize

    80KB

  • memory/4264-117-0x0000000007CE0000-0x0000000007CF1000-memory.dmp

    Filesize

    68KB

  • memory/4264-116-0x0000000007A00000-0x0000000007AA3000-memory.dmp

    Filesize

    652KB

  • memory/4264-106-0x0000000072860000-0x00000000728AC000-memory.dmp

    Filesize

    304KB

  • memory/4264-104-0x00000000067F0000-0x000000000683C000-memory.dmp

    Filesize

    304KB

  • memory/4264-97-0x0000000006120000-0x0000000006474000-memory.dmp

    Filesize

    3.3MB

  • memory/4552-3-0x00000000053E0000-0x0000000005472000-memory.dmp

    Filesize

    584KB

  • memory/4552-4-0x0000000075180000-0x0000000075930000-memory.dmp

    Filesize

    7.7MB

  • memory/4552-6-0x0000000006A40000-0x0000000006A5E000-memory.dmp

    Filesize

    120KB

  • memory/4552-7-0x000000007518E000-0x000000007518F000-memory.dmp

    Filesize

    4KB

  • memory/4552-8-0x0000000075180000-0x0000000075930000-memory.dmp

    Filesize

    7.7MB

  • memory/4552-9-0x0000000009460000-0x0000000009520000-memory.dmp

    Filesize

    768KB

  • memory/4552-10-0x000000000B520000-0x000000000B5BC000-memory.dmp

    Filesize

    624KB

  • memory/4552-5-0x00000000054A0000-0x00000000054AA000-memory.dmp

    Filesize

    40KB

  • memory/4552-0-0x000000007518E000-0x000000007518F000-memory.dmp

    Filesize

    4KB

  • memory/4552-2-0x00000000058F0000-0x0000000005E94000-memory.dmp

    Filesize

    5.6MB

  • memory/4552-1-0x00000000008E0000-0x00000000009E4000-memory.dmp

    Filesize

    1.0MB

  • memory/4552-31-0x0000000075180000-0x0000000075930000-memory.dmp

    Filesize

    7.7MB