Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-09-2024 02:23

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.

  • 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 4 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
    "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2528
    • 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:2992
    • 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:2840
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TkhOsslQS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp205C.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2488
    • 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:2648
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\nuieljbqlttpwkqzfdftqvkqx"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1752
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\xonolbmjzblcyymdoosubiezgumm"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:2676
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\zqshmuwlnjehieahfymwemzqpbdvuim"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1780

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    ae918927d758ad957218b91a539abf1a

    SHA1

    eae5468812718cb8411523a327aa62443a8e846f

    SHA256

    72be82fda317800eff6880638564e52c032ec3e45ae69163f8055cdb7d80f80e

    SHA512

    2536a79d8e71fab931aa1a5bc8b0bfd8978e0260a39b3114aba858eb0654692696bd96d11470331ad88a4ec3a625ff7e1d6c013d7ce8c7d970f9befcbfd359d6

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\tmp205C.tmp

    Filesize

    1KB

    MD5

    0284154d61bd499876f049abf1a4fb92

    SHA1

    d392c0fd3e93e4956264018bb0739a66ee341eca

    SHA256

    d484358cca3e971bc4b08877f0744c52ed528241a8f2ed20f5bd569ef1cb42aa

    SHA512

    8e410172571e74db13831e81327fd4759c65774abbd32c3cc603167e9a843d19dd225fa0bd519396fe5c5c78847ed3d14d13216088ed34915ff7ae6e6f21eb50

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    0f9ba51baeaac6b2874dedfa39670d50

    SHA1

    d4fb362fd1a0f1e51257d38f4e09b5566a17832c

    SHA256

    cc10ed12d05d08c737b67889727c684c7d06a40a11d77630ff7487d54e9d2c70

    SHA512

    fe176fb822f8c9a3ec34f5480f76ecd4361fe5b92925fa89024b697c329121b946fa1ffbfa167be7e70397a056a797aff5eec3a11cc0ba1ba5565449fb89fee6

  • memory/1752-58-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1752-56-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1752-53-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1780-63-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1780-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1780-61-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1780-62-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2528-44-0x0000000074B20000-0x000000007520E000-memory.dmp

    Filesize

    6.9MB

  • memory/2528-0-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

    Filesize

    4KB

  • memory/2528-4-0x00000000004E0000-0x00000000004FA000-memory.dmp

    Filesize

    104KB

  • memory/2528-8-0x0000000005500000-0x00000000055C0000-memory.dmp

    Filesize

    768KB

  • memory/2528-3-0x0000000005310000-0x00000000053F8000-memory.dmp

    Filesize

    928KB

  • memory/2528-2-0x0000000074B20000-0x000000007520E000-memory.dmp

    Filesize

    6.9MB

  • memory/2528-1-0x0000000000EC0000-0x0000000000FBA000-memory.dmp

    Filesize

    1000KB

  • memory/2528-5-0x0000000074B20000-0x000000007520E000-memory.dmp

    Filesize

    6.9MB

  • memory/2528-6-0x0000000000500000-0x000000000050C000-memory.dmp

    Filesize

    48KB

  • memory/2528-7-0x0000000000550000-0x0000000000560000-memory.dmp

    Filesize

    64KB

  • memory/2648-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-79-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-47-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-104-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-37-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2648-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-103-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-40-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-70-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2648-73-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2648-74-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2648-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-80-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-87-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2648-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2676-57-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2676-59-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2676-55-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB