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Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/09/2024, 01:38

General

  • Target

    430def766ae648ee115b2ca3151e4519bfd8c002b0dbe1f1620a3c3702a2e3a5.exe

  • Size

    885KB

  • MD5

    4486c981feaebbbd36fed46237157836

  • SHA1

    c8c48956dadaf9c71fbcb95ccbb27771071f777f

  • SHA256

    430def766ae648ee115b2ca3151e4519bfd8c002b0dbe1f1620a3c3702a2e3a5

  • SHA512

    483cb6ca50611ee90f3958d9acee301969503e821352fdfc7e4d84617249bea2bfb72006fd3d9c56156813fcc29a44c39016f5854e83b78757a0a29ea68b6cb6

  • SSDEEP

    24576:uzDv0aPkkju5aJKQQBvHG5571qWU9ujI:unjPjcakQ77/U9

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:52121

officerem.duckdns.org:52121

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-6GPUH1

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\430def766ae648ee115b2ca3151e4519bfd8c002b0dbe1f1620a3c3702a2e3a5.exe
    "C:\Users\Admin\AppData\Local\Temp\430def766ae648ee115b2ca3151e4519bfd8c002b0dbe1f1620a3c3702a2e3a5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1832
    • 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\430def766ae648ee115b2ca3151e4519bfd8c002b0dbe1f1620a3c3702a2e3a5.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2736
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OdQDwgVqjDzll.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2884
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OdQDwgVqjDzll" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE3CA.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2780
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2748

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpE3CA.tmp

    Filesize

    1KB

    MD5

    ec25993c465b6a76fff0211e765feffd

    SHA1

    b8fa54250ef563eb1fc395246e7ad8bd3931da17

    SHA256

    8790e9e556c8d52b62396b5bd8029991a16c77a24b7b563cb07a0bc8e37ed1ef

    SHA512

    5667bcb25ca8c6aad7202a66ababef3330a89c825555a1c3593c367eb7e1c384596513fce4b6cc12d5013a640db8fed1b60a15884cc2d302c00fb430d0fc1dd5

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

    Filesize

    7KB

    MD5

    99844af59ba9d4340ad4964cc7e32f9a

    SHA1

    c48378c77649c45c59fe553a96b274ce6b50faf1

    SHA256

    c80aef71ed380ff6906fd03d8fe38ee54a27f49215ef7f08bff6e1fc2fae2073

    SHA512

    20ec7ffb7efc7368ee4366310d6bd81ba4953a18805f93adeb9a8f6f9a1f831884fef14b3a0f782bee2bb6c0cbfcda5bda6145f513737376b38bed0285bd3398

  • memory/1832-0-0x0000000074C0E000-0x0000000074C0F000-memory.dmp

    Filesize

    4KB

  • memory/1832-1-0x0000000000030000-0x0000000000114000-memory.dmp

    Filesize

    912KB

  • memory/1832-2-0x0000000074C00000-0x00000000752EE000-memory.dmp

    Filesize

    6.9MB

  • memory/1832-3-0x0000000000640000-0x0000000000652000-memory.dmp

    Filesize

    72KB

  • memory/1832-4-0x0000000074C0E000-0x0000000074C0F000-memory.dmp

    Filesize

    4KB

  • memory/1832-5-0x0000000074C00000-0x00000000752EE000-memory.dmp

    Filesize

    6.9MB

  • memory/1832-6-0x0000000005310000-0x00000000053CE000-memory.dmp

    Filesize

    760KB

  • memory/1832-40-0x0000000074C00000-0x00000000752EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2748-33-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-41-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-23-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-39-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-38-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-37-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2748-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-31-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-29-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-19-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-27-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-42-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-43-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-44-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-45-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-48-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-49-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-51-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-50-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-53-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-52-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-54-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2748-55-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB