Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-09-2024 13:22

General

  • Target

    f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe

  • Size

    991KB

  • MD5

    c18b6791df510f32c72a619ef3dd7c7d

  • SHA1

    671e8af4049ebc8e93a4a9c968dfe747c24c3a60

  • SHA256

    f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69

  • SHA512

    ac5d54ad8e46324286d55f7c1a78a6315483e338ebebd36c5d2c2db30085da9ef734bec20782120f4ec8eaf101bccc51f8612fa26adb6e0f0af0711c350b1974

  • SSDEEP

    12288:vdZshZWHXnhEE8tpUEx1I94L+R49xIUBZjlP4JH0Y6QC4zmEs0mwF0WOs5HvrWZX:vzshZEXw7jIS6RuXGUDQFDMEKW4THM05

Malware Config

Extracted

Family

remcos

Botnet

Aug 23C

C2

method8888.ddns.net:6902

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

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-RCNGU6

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • 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 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 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 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
    "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3384
    • 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\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2004
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TkhOsslQS.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3448
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TkhOsslQS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC60A.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:5056
    • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
      "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4812
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\dssafeapcwddxyicmottvmlefevazgjj"
        3⤵
          PID:2208
        • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
          C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\dssafeapcwddxyicmottvmlefevazgjj"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2472
        • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
          C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\nuxlf"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:4420
        • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
          C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\yoldgpvk"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4236
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3836,i,11391966286255097843,10588851088187498028,262144 --variations-seed-version --mojo-platform-channel-handle=4408 /prefetch:8
      1⤵
        PID:4584

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        38bcc625e74f9d047c4c9cdcaa113344

        SHA1

        fec40f018b33b9e8f3b81672392262096c6b63cc

        SHA256

        d348cabafe1f049d3e95ad84e5ce317ed87b4e4bed73ccd649b6727a7f38cfdf

        SHA512

        cc4fda25b8a69434924ae5fa714dbb5067ba4501ebfc3357b808df743f42cbf95846f2e7f01d419a834546474a87eba56fe272c93e723e3c85148f1bb8aa8334

      • 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

        d2ad6cdb3b0ea7fb59ae5e03ead4c7ed

        SHA1

        26f65fae06c8c128ceabadf1172ffb7b4348c17c

        SHA256

        86565e9be416d05ec5a44e5990e0ce094aa53d60a79edf04c3645fd7eb744b16

        SHA512

        0446a6a0edda0efa12898152e0723a9ca3f981f2ba88834924a3ce55172fccedf7d0c4c58cc1080e91c96a6dbd37c9131ba969dab13bb43db5912377ed965109

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qv5alxlj.rwz.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\dssafeapcwddxyicmottvmlefevazgjj

        Filesize

        4KB

        MD5

        cda83eba5a004554ccdc061fd3df499c

        SHA1

        58ff2ecb9d47be10335e104896c87c62dc328523

        SHA256

        e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

        SHA512

        f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

      • C:\Users\Admin\AppData\Local\Temp\tmpC60A.tmp

        Filesize

        1KB

        MD5

        2121239188c1bc31334c87d92820d2d7

        SHA1

        43a2eb0222a055e54d2960583945f4eb456725f9

        SHA256

        4e18a075c3000b03753569419724e322bc674623ff4364f0fa01194f079a12c6

        SHA512

        c18d1651252a16d09f279c1b3400de495c3734b0cc81b7dea16da63e6286b21b0ac1ffeff3c66f120b25532e68298f679bd0f0d2f7012109ce7174a68736d3f6

      • memory/2004-123-0x00000000070E0000-0x00000000070E8000-memory.dmp

        Filesize

        32KB

      • memory/2004-59-0x0000000005FF0000-0x000000000603C000-memory.dmp

        Filesize

        304KB

      • memory/2004-90-0x0000000075970000-0x00000000759BC000-memory.dmp

        Filesize

        304KB

      • memory/2004-100-0x0000000006CA0000-0x0000000006D43000-memory.dmp

        Filesize

        652KB

      • memory/2004-102-0x0000000006DC0000-0x0000000006DDA000-memory.dmp

        Filesize

        104KB

      • memory/2004-110-0x0000000006E30000-0x0000000006E3A000-memory.dmp

        Filesize

        40KB

      • memory/2004-112-0x0000000006FC0000-0x0000000006FD1000-memory.dmp

        Filesize

        68KB

      • memory/2004-28-0x0000000004B60000-0x0000000004BC6000-memory.dmp

        Filesize

        408KB

      • memory/2004-18-0x00000000021C0000-0x00000000021F6000-memory.dmp

        Filesize

        216KB

      • memory/2004-20-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/2004-19-0x0000000004E90000-0x00000000054B8000-memory.dmp

        Filesize

        6.2MB

      • memory/2004-21-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/2004-58-0x0000000005A90000-0x0000000005AAE000-memory.dmp

        Filesize

        120KB

      • memory/2004-121-0x0000000007000000-0x0000000007014000-memory.dmp

        Filesize

        80KB

      • memory/2004-46-0x00000000055C0000-0x0000000005914000-memory.dmp

        Filesize

        3.3MB

      • memory/2004-25-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/2004-129-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/2004-27-0x00000000049C0000-0x00000000049E2000-memory.dmp

        Filesize

        136KB

      • memory/2004-29-0x0000000004BD0000-0x0000000004C36000-memory.dmp

        Filesize

        408KB

      • memory/2472-66-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2472-67-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2472-68-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/3384-6-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/3384-13-0x0000000006830000-0x00000000068F0000-memory.dmp

        Filesize

        768KB

      • memory/3384-5-0x0000000005650000-0x00000000056EC000-memory.dmp

        Filesize

        624KB

      • memory/3384-0-0x00000000750EE000-0x00000000750EF000-memory.dmp

        Filesize

        4KB

      • memory/3384-1-0x00000000008D0000-0x00000000009CA000-memory.dmp

        Filesize

        1000KB

      • memory/3384-4-0x0000000005480000-0x000000000548A000-memory.dmp

        Filesize

        40KB

      • memory/3384-7-0x0000000006C90000-0x0000000006D78000-memory.dmp

        Filesize

        928KB

      • memory/3384-48-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/3384-12-0x0000000005A20000-0x0000000005A30000-memory.dmp

        Filesize

        64KB

      • memory/3384-11-0x0000000005A10000-0x0000000005A1C000-memory.dmp

        Filesize

        48KB

      • memory/3384-10-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/3384-9-0x00000000750EE000-0x00000000750EF000-memory.dmp

        Filesize

        4KB

      • memory/3384-8-0x00000000059E0000-0x00000000059FA000-memory.dmp

        Filesize

        104KB

      • memory/3384-2-0x0000000005A70000-0x0000000006014000-memory.dmp

        Filesize

        5.6MB

      • memory/3384-3-0x00000000053E0000-0x0000000005472000-memory.dmp

        Filesize

        584KB

      • memory/3448-22-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/3448-26-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/3448-122-0x0000000007B80000-0x0000000007B9A000-memory.dmp

        Filesize

        104KB

      • memory/3448-111-0x0000000007AC0000-0x0000000007B56000-memory.dmp

        Filesize

        600KB

      • memory/3448-130-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/3448-120-0x0000000007A70000-0x0000000007A7E000-memory.dmp

        Filesize

        56KB

      • memory/3448-78-0x0000000007510000-0x0000000007542000-memory.dmp

        Filesize

        200KB

      • memory/3448-101-0x0000000007E90000-0x000000000850A000-memory.dmp

        Filesize

        6.5MB

      • memory/3448-79-0x0000000075970000-0x00000000759BC000-memory.dmp

        Filesize

        304KB

      • memory/3448-24-0x00000000750E0000-0x0000000075890000-memory.dmp

        Filesize

        7.7MB

      • memory/3448-89-0x00000000074D0000-0x00000000074EE000-memory.dmp

        Filesize

        120KB

      • memory/4236-72-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4236-70-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4236-71-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/4420-77-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/4420-69-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/4420-76-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/4812-62-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-37-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-118-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/4812-117-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/4812-119-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-114-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/4812-45-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-61-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-47-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-42-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-35-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-60-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-63-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-65-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-136-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-137-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-144-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-145-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-152-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/4812-153-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB