Analysis
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max time kernel
117s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
12-08-2024 21:13
Behavioral task
behavioral1
Sample
remcos_a.exe
Resource
win7-20240708-en
General
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Target
remcos_a.exe
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Size
483KB
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MD5
b1b853c8e73a491934fcfb8d20c88ffd
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SHA1
b2b93eb66a46504fd389a6e8e207d83ff85930d8
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SHA256
4b80f8820d44f0b53482e7a5a5cfe6d44a0e2799055526e83d3779a241b4a639
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SHA512
2f3cdb5277a3d3cc8ea2418cf80d05afa9ce0af01ede5c85c65faa89143537d4742a17a5e7a70784cc995fd7e2075030b74c8e1086f5614f7528b12efff35265
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SSDEEP
6144:QTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccrHT4:QTlrYw1RUh3NFn+N5WfIQIjbs/ZBUT4
Malware Config
Extracted
remcos
RemoteHost
software-julia.gl.at.ply.gg:17106
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
true
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-SMNGDV
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screenshot_crypt
false
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screenshot_flag
true
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
true
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take_screenshot_time
5
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take_screenshot_title
roblox
Signatures
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Processes:
reg.exereg.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe -
Deletes itself 1 IoCs
Processes:
WScript.exepid Process 2584 WScript.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
remcos_a.exeiexplore.exedescription pid Process procid_target PID 2820 set thread context of 2812 2820 remcos_a.exe 31 PID 2812 set thread context of 2772 2812 iexplore.exe 36 -
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.
Processes:
remcos_a.execmd.exeiexplore.exereg.execmd.exereg.exeWScript.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos_a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language iexplore.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WScript.exe -
Modifies registry key 1 TTPs 2 IoCs
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Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
remcos_a.exepid Process 2820 remcos_a.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
iexplore.exepid Process 2812 iexplore.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
remcos_a.exeiexplore.exepid Process 2820 remcos_a.exe 2812 iexplore.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
iexplore.exepid Process 2812 iexplore.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
remcos_a.exeiexplore.execmd.execmd.exedescription pid Process procid_target PID 2820 wrote to memory of 2860 2820 remcos_a.exe 30 PID 2820 wrote to memory of 2860 2820 remcos_a.exe 30 PID 2820 wrote to memory of 2860 2820 remcos_a.exe 30 PID 2820 wrote to memory of 2860 2820 remcos_a.exe 30 PID 2820 wrote to memory of 2812 2820 remcos_a.exe 31 PID 2820 wrote to memory of 2812 2820 remcos_a.exe 31 PID 2820 wrote to memory of 2812 2820 remcos_a.exe 31 PID 2820 wrote to memory of 2812 2820 remcos_a.exe 31 PID 2820 wrote to memory of 2812 2820 remcos_a.exe 31 PID 2812 wrote to memory of 2800 2812 iexplore.exe 33 PID 2812 wrote to memory of 2800 2812 iexplore.exe 33 PID 2812 wrote to memory of 2800 2812 iexplore.exe 33 PID 2812 wrote to memory of 2800 2812 iexplore.exe 33 PID 2860 wrote to memory of 2736 2860 cmd.exe 35 PID 2860 wrote to memory of 2736 2860 cmd.exe 35 PID 2860 wrote to memory of 2736 2860 cmd.exe 35 PID 2860 wrote to memory of 2736 2860 cmd.exe 35 PID 2812 wrote to memory of 2772 2812 iexplore.exe 36 PID 2812 wrote to memory of 2772 2812 iexplore.exe 36 PID 2812 wrote to memory of 2772 2812 iexplore.exe 36 PID 2812 wrote to memory of 2772 2812 iexplore.exe 36 PID 2812 wrote to memory of 2772 2812 iexplore.exe 36 PID 2800 wrote to memory of 2596 2800 cmd.exe 37 PID 2800 wrote to memory of 2596 2800 cmd.exe 37 PID 2800 wrote to memory of 2596 2800 cmd.exe 37 PID 2800 wrote to memory of 2596 2800 cmd.exe 37 PID 2812 wrote to memory of 2584 2812 iexplore.exe 40 PID 2812 wrote to memory of 2584 2812 iexplore.exe 40 PID 2812 wrote to memory of 2584 2812 iexplore.exe 40 PID 2812 wrote to memory of 2584 2812 iexplore.exe 40
Processes
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C:\Users\Admin\AppData\Local\Temp\remcos_a.exe"C:\Users\Admin\AppData\Local\Temp\remcos_a.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2820 -
C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860 -
C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f3⤵
- UAC bypass
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:2736
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\??\c:\program files (x86)\internet explorer\iexplore.exe"c:\program files (x86)\internet explorer\iexplore.exe"2⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2812 -
C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2800 -
C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f4⤵
- UAC bypass
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:2596
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C:\Windows\SysWOW64\svchost.exesvchost.exe3⤵PID:2772
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vypdcxbuvbwcre.vbs"3⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2584
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
230B
MD56d1104542ba8ffaf3ca1fda90b152251
SHA130c7d86242117b2cfbc3e2ea8ea31fd34df705c4
SHA256a7f1b2a1b420c669b14172015544b7da6b8d6bc50cf9c98d57bbe6c689a61abf
SHA512dc003927fe930325be72de00b59c5a1b8091325409d8c432fbb90b16c6cfc345ffd169cf47bb7a75e421fd68c8826404299a3fd9af0880c83d462bb6c46b39db
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Filesize
504B
MD5088cdc83bbaefe8ed56dafb50c9d61b1
SHA101a8a9188545dfe84b50b428e4bafc0f65d4719d
SHA256b74b99fbcd0c68b32e776827b3688f55d8f5746a35e92a82d1a019c91fe87b9c
SHA5125710d459135ec2a7e76e27dc799068d48adc909294d6de76140adfdb37c3ae101e71bb4365334fa78e16ba9b55aec168b2ce9d79558d82f255617a0b0a52c5a3