Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-09-2024 01:47

General

  • Target

    61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe

  • Size

    1006KB

  • MD5

    c8da5e64c79548b8447b7544517442db

  • SHA1

    e8bc50e2f1fe84fe96523a40d2a0abfd01c72bf7

  • SHA256

    61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f

  • SHA512

    1d3e062b225f87bc1bde79b25b9bdd0499eda092817b83436d1f1760da9a928f9dcf07456485ce472559f7f4b6e5e7ac0a7af1069cbc1983be0d906cac4893e1

  • SSDEEP

    24576:/doEWj+MjS9+ZW8Z6+soNQMOHGRukDq7IR0RJgU:i1jm+w8dCHGRuEq7IRqh

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.89.247.135:2404

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-7IHQDG

  • 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 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.

  • 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 7 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 17 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
    "C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4832
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\unpuLJjbqcRkR.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4504
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\unpuLJjbqcRkR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCA21.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1956
    • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
      "C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1788
      • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
        C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\wrsbjhtiwjobrgrkrrqgsajvuufukbfwi"
        3⤵
          PID:668
        • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
          C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\wrsbjhtiwjobrgrkrrqgsajvuufukbfwi"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3304
        • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
          C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\gmxuk"
          3⤵
            PID:3544
          • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
            C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\gmxuk"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:4552
          • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
            C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\jolmksoe"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3420
      • 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=4216,i,15336851255456239337,16379811035920490645,262144 --variations-seed-version --mojo-platform-channel-handle=4012 /prefetch:8
        1⤵
          PID:2252

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_00xeevp4.5fr.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmpCA21.tmp

          Filesize

          1KB

          MD5

          b924d3e15d40848cda33c0b6b76e3590

          SHA1

          2bc13406f16538ed477f42e6fa646d280e28333d

          SHA256

          d4cef2ee74338883a38aa32638fae7e978f5928842c9c6efd6642730689e3c34

          SHA512

          fdc4db3cc75449061e6cff3fc6143aa9f8284148a7df4e0196e84ca6c591ca43398081b26f61102daf0fb32ad1ec355572ca4a3f5d3f8534deaa0a8fe96a4577

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

          Filesize

          4KB

          MD5

          cda83eba5a004554ccdc061fd3df499c

          SHA1

          58ff2ecb9d47be10335e104896c87c62dc328523

          SHA256

          e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

          SHA512

          f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

        • memory/1788-87-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-107-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-108-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-106-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-105-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-104-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-103-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-101-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-102-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-100-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-82-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1788-85-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1788-86-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/1788-20-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-45-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-25-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

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

          Filesize

          520KB

        • memory/1788-46-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-44-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-48-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-42-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1788-21-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3304-49-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3304-53-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3304-51-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/3420-60-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3420-59-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3420-55-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/4504-68-0x00000000068C0000-0x00000000068F2000-memory.dmp

          Filesize

          200KB

        • memory/4504-79-0x00000000072B0000-0x00000000072CE000-memory.dmp

          Filesize

          120KB

        • memory/4504-24-0x0000000005220000-0x0000000005242000-memory.dmp

          Filesize

          136KB

        • memory/4504-15-0x0000000004D40000-0x0000000004D76000-memory.dmp

          Filesize

          216KB

        • memory/4504-27-0x0000000005A40000-0x0000000005AA6000-memory.dmp

          Filesize

          408KB

        • memory/4504-41-0x0000000006310000-0x000000000632E000-memory.dmp

          Filesize

          120KB

        • memory/4504-40-0x0000000005CD0000-0x0000000006024000-memory.dmp

          Filesize

          3.3MB

        • memory/4504-28-0x0000000005AB0000-0x0000000005B16000-memory.dmp

          Filesize

          408KB

        • memory/4504-16-0x0000000074940000-0x00000000750F0000-memory.dmp

          Filesize

          7.7MB

        • memory/4504-94-0x0000000007850000-0x0000000007864000-memory.dmp

          Filesize

          80KB

        • memory/4504-43-0x0000000006700000-0x000000000674C000-memory.dmp

          Filesize

          304KB

        • memory/4504-93-0x0000000007840000-0x000000000784E000-memory.dmp

          Filesize

          56KB

        • memory/4504-69-0x0000000071130000-0x000000007117C000-memory.dmp

          Filesize

          304KB

        • memory/4504-95-0x0000000007950000-0x000000000796A000-memory.dmp

          Filesize

          104KB

        • memory/4504-80-0x00000000074E0000-0x0000000007583000-memory.dmp

          Filesize

          652KB

        • memory/4504-92-0x0000000007810000-0x0000000007821000-memory.dmp

          Filesize

          68KB

        • memory/4504-19-0x0000000074940000-0x00000000750F0000-memory.dmp

          Filesize

          7.7MB

        • memory/4504-18-0x0000000005410000-0x0000000005A38000-memory.dmp

          Filesize

          6.2MB

        • memory/4504-99-0x0000000074940000-0x00000000750F0000-memory.dmp

          Filesize

          7.7MB

        • memory/4504-96-0x0000000007930000-0x0000000007938000-memory.dmp

          Filesize

          32KB

        • memory/4504-88-0x0000000007C50000-0x00000000082CA000-memory.dmp

          Filesize

          6.5MB

        • memory/4504-89-0x0000000007610000-0x000000000762A000-memory.dmp

          Filesize

          104KB

        • memory/4504-90-0x0000000007680000-0x000000000768A000-memory.dmp

          Filesize

          40KB

        • memory/4504-91-0x0000000007890000-0x0000000007926000-memory.dmp

          Filesize

          600KB

        • memory/4552-54-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/4552-52-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/4552-50-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/4832-30-0x0000000074940000-0x00000000750F0000-memory.dmp

          Filesize

          7.7MB

        • memory/4832-1-0x0000000000D50000-0x0000000000E52000-memory.dmp

          Filesize

          1.0MB

        • memory/4832-0-0x000000007494E000-0x000000007494F000-memory.dmp

          Filesize

          4KB

        • memory/4832-3-0x0000000005840000-0x00000000058D2000-memory.dmp

          Filesize

          584KB

        • memory/4832-2-0x0000000005D50000-0x00000000062F4000-memory.dmp

          Filesize

          5.6MB

        • memory/4832-4-0x0000000005900000-0x000000000590A000-memory.dmp

          Filesize

          40KB

        • memory/4832-10-0x000000000A730000-0x000000000A7CC000-memory.dmp

          Filesize

          624KB

        • memory/4832-9-0x0000000006A50000-0x0000000006B10000-memory.dmp

          Filesize

          768KB

        • memory/4832-8-0x0000000074940000-0x00000000750F0000-memory.dmp

          Filesize

          7.7MB

        • memory/4832-7-0x000000007494E000-0x000000007494F000-memory.dmp

          Filesize

          4KB

        • memory/4832-6-0x00000000081F0000-0x0000000008208000-memory.dmp

          Filesize

          96KB

        • memory/4832-5-0x0000000074940000-0x00000000750F0000-memory.dmp

          Filesize

          7.7MB