Analysis

  • max time kernel
    147s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-11-2024 17:24

General

  • Target

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe

  • Size

    908KB

  • MD5

    0a91b0a960e1cb925434f0ded97e30b7

  • SHA1

    ea0ed432c0cdb5f86cde1b17850a77b68ad71af4

  • SHA256

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b

  • SHA512

    37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4

  • SSDEEP

    24576:Mo7x/alQteiW/C+sHTTPrCehcxQv4Zj6CSy:Mc/zhWK+vC4ZIy

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

206.189.218.238:4782

206.189.218.238:2286

206.189.218.238:3363

206.189.218.238:3386

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NJK093

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • 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 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\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
    "C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1504
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4876
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1671.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4272
    • C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
      "C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4584
      • 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:1388
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3996
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA340.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:4404
        • 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:4948

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    14828510a3960228a5321ca477f461ad

    SHA1

    e09c428111d4621ab97319903284d78726b95065

    SHA256

    78cad0a7cf88a1de2a3f2899e4cdee5eadefd0f9f80f37e221a666c62dc5d6a0

    SHA512

    4936d5d5a623d2288f4d529fdf7741b783312cde0afa8bdcbe3d8f1f618b7751c560273b856b6633cbcd34a6b1505bd19cd1937d05e2bb36e92715620b96dc8e

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    908KB

    MD5

    0a91b0a960e1cb925434f0ded97e30b7

    SHA1

    ea0ed432c0cdb5f86cde1b17850a77b68ad71af4

    SHA256

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b

    SHA512

    37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4

  • 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

    1d8168a9aac90f8bddb9d886daf8e5da

    SHA1

    37851efdd53b9381351118d99ded9afa0fc4635d

    SHA256

    d060265ccb4981acc0421976452c7755c61a23e3e863a6cc4a017fdd89cc4aeb

    SHA512

    bf24e90e80c0ef978efa5db89115f4e1212b1a6d0887f4254c6d17453d489fc46f3ae281808c5cd757d6c233a38a9cad7843522650aea0ffd8efff52259efaba

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bbocihdb.kmj.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp1671.tmp

    Filesize

    1KB

    MD5

    b7ac3d8eac1434ac67ec08528d2acfeb

    SHA1

    610cb0330dee84cf9c2377382e97d3304f562e3b

    SHA256

    5f39610953d0ac95d3c4a0e53c5976e04fd27ba4f5dc8ea0192bd5d8909f4f58

    SHA512

    ca9ed984fc3b2da059586a36cfe87eb251cb58e51cd35b796339159e805518132dd9fd6d160dfdc88b3b6e12db2b953bf3512c870bb593fa897569e7023762d8

  • memory/1388-79-0x0000000005680000-0x0000000005692000-memory.dmp

    Filesize

    72KB

  • memory/1504-6-0x0000000005960000-0x00000000059FC000-memory.dmp

    Filesize

    624KB

  • memory/1504-3-0x0000000005700000-0x0000000005792000-memory.dmp

    Filesize

    584KB

  • memory/1504-9-0x0000000074550000-0x0000000074D00000-memory.dmp

    Filesize

    7.7MB

  • memory/1504-10-0x0000000006CD0000-0x0000000006D94000-memory.dmp

    Filesize

    784KB

  • memory/1504-7-0x000000007455E000-0x000000007455F000-memory.dmp

    Filesize

    4KB

  • memory/1504-8-0x0000000005910000-0x0000000005922000-memory.dmp

    Filesize

    72KB

  • memory/1504-38-0x0000000074550000-0x0000000074D00000-memory.dmp

    Filesize

    7.7MB

  • memory/1504-4-0x0000000074550000-0x0000000074D00000-memory.dmp

    Filesize

    7.7MB

  • memory/1504-0-0x000000007455E000-0x000000007455F000-memory.dmp

    Filesize

    4KB

  • memory/1504-1-0x0000000000BA0000-0x0000000000C8A000-memory.dmp

    Filesize

    936KB

  • memory/1504-2-0x0000000005CB0000-0x0000000006254000-memory.dmp

    Filesize

    5.6MB

  • memory/1504-5-0x0000000005680000-0x000000000568A000-memory.dmp

    Filesize

    40KB

  • memory/3996-117-0x0000000007870000-0x0000000007884000-memory.dmp

    Filesize

    80KB

  • memory/3996-105-0x0000000006460000-0x00000000064AC000-memory.dmp

    Filesize

    304KB

  • memory/3996-103-0x0000000005E80000-0x00000000061D4000-memory.dmp

    Filesize

    3.3MB

  • memory/3996-106-0x0000000070E00000-0x0000000070E4C000-memory.dmp

    Filesize

    304KB

  • memory/3996-116-0x0000000007830000-0x0000000007841000-memory.dmp

    Filesize

    68KB

  • memory/4584-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4584-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4584-40-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4584-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4584-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4876-66-0x0000000007450000-0x00000000074F3000-memory.dmp

    Filesize

    652KB

  • memory/4876-78-0x0000000074550000-0x0000000074D00000-memory.dmp

    Filesize

    7.7MB

  • memory/4876-54-0x00000000071E0000-0x0000000007212000-memory.dmp

    Filesize

    200KB

  • memory/4876-55-0x0000000071C90000-0x0000000071CDC000-memory.dmp

    Filesize

    304KB

  • memory/4876-65-0x0000000007220000-0x000000000723E000-memory.dmp

    Filesize

    120KB

  • memory/4876-19-0x0000000074550000-0x0000000074D00000-memory.dmp

    Filesize

    7.7MB

  • memory/4876-67-0x0000000007C70000-0x00000000082EA000-memory.dmp

    Filesize

    6.5MB

  • memory/4876-68-0x0000000007630000-0x000000000764A000-memory.dmp

    Filesize

    104KB

  • memory/4876-69-0x00000000076A0000-0x00000000076AA000-memory.dmp

    Filesize

    40KB

  • memory/4876-70-0x00000000078B0000-0x0000000007946000-memory.dmp

    Filesize

    600KB

  • memory/4876-71-0x0000000007830000-0x0000000007841000-memory.dmp

    Filesize

    68KB

  • memory/4876-72-0x0000000007860000-0x000000000786E000-memory.dmp

    Filesize

    56KB

  • memory/4876-73-0x0000000007870000-0x0000000007884000-memory.dmp

    Filesize

    80KB

  • memory/4876-74-0x0000000007970000-0x000000000798A000-memory.dmp

    Filesize

    104KB

  • memory/4876-75-0x0000000007950000-0x0000000007958000-memory.dmp

    Filesize

    32KB

  • memory/4876-53-0x0000000006310000-0x000000000635C000-memory.dmp

    Filesize

    304KB

  • memory/4876-20-0x00000000059D0000-0x00000000059F2000-memory.dmp

    Filesize

    136KB

  • memory/4876-39-0x0000000005C60000-0x0000000005FB4000-memory.dmp

    Filesize

    3.3MB

  • memory/4876-15-0x0000000004CE0000-0x0000000004D16000-memory.dmp

    Filesize

    216KB

  • memory/4876-17-0x0000000005350000-0x0000000005978000-memory.dmp

    Filesize

    6.2MB

  • memory/4876-16-0x0000000074550000-0x0000000074D00000-memory.dmp

    Filesize

    7.7MB

  • memory/4876-24-0x0000000005BE0000-0x0000000005C46000-memory.dmp

    Filesize

    408KB

  • memory/4876-23-0x0000000005B70000-0x0000000005BD6000-memory.dmp

    Filesize

    408KB

  • memory/4876-52-0x0000000006250000-0x000000000626E000-memory.dmp

    Filesize

    120KB

  • memory/4876-28-0x0000000074550000-0x0000000074D00000-memory.dmp

    Filesize

    7.7MB

  • memory/4948-87-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4948-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4948-92-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4948-124-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4948-91-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4948-130-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4948-137-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB