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Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04/09/2024, 12:49

General

  • Target

    465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe

  • Size

    895KB

  • MD5

    7441688208521af2eace2cecd3872f24

  • SHA1

    4dd23aa0e9a5f340f5a1da50c272ec7047bbece1

  • SHA256

    465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf

  • SHA512

    be85c5f93a32a6fa244dbffc5dbabbfe007120065a9ed48faebc337e3e8496591d58a424d6026e8312675d476329942a60205d2349b598390b8176cd033459ce

  • SSDEEP

    24576:n2BRYbqRRw+dsXFdyA8vY+P45afP16P1f9xER:n2BRlRRxdVTIy6P1rER

Malware Config

Extracted

Family

remcos

Botnet

5764576

C2

172.93.218.178:45667

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

    765-XJJE0J

  • 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 1 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 4 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe
    "C:\Users\Admin\AppData\Local\Temp\465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OUsyxJ.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2336
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OUsyxJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCCB1.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2704
    • C:\Users\Admin\AppData\Local\Temp\465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe
      "C:\Users\Admin\AppData\Local\Temp\465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2928

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpCCB1.tmp

    Filesize

    1KB

    MD5

    bb465d560f35dc88979d1d6d851df0aa

    SHA1

    63a16009b9238626fba47f462b7b5bc70a0f9451

    SHA256

    0bbcbc775c3766c781fe7d7c7035d66bfb50c03aa033abdf26c030ba34a71036

    SHA512

    b0744d374440c4db4c3a15163145701d4a3e3524f2c01a7d0e9cafc105bf3dc087df2ba5458dda8ffda650b0b7e1c5e012571b9a4c908309b532cb734b6d3f13

  • memory/2544-36-0x0000000074510000-0x0000000074BFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2544-0-0x000000007451E000-0x000000007451F000-memory.dmp

    Filesize

    4KB

  • memory/2544-3-0x0000000000930000-0x000000000094A000-memory.dmp

    Filesize

    104KB

  • memory/2544-4-0x000000007451E000-0x000000007451F000-memory.dmp

    Filesize

    4KB

  • memory/2544-5-0x0000000074510000-0x0000000074BFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2544-6-0x0000000000A50000-0x0000000000A5E000-memory.dmp

    Filesize

    56KB

  • memory/2544-7-0x0000000004F30000-0x0000000004FEE000-memory.dmp

    Filesize

    760KB

  • memory/2544-1-0x0000000000FB0000-0x0000000001096000-memory.dmp

    Filesize

    920KB

  • memory/2544-2-0x0000000074510000-0x0000000074BFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2928-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2928-37-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-17-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-23-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-33-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-35-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-15-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-32-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-19-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-28-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-34-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-29-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-38-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-39-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-40-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-41-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-42-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-43-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-44-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-45-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-46-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-47-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2928-48-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB