Analysis
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max time kernel
147s -
max time network
143s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
08-09-2024 01:55
Static task
static1
Behavioral task
behavioral1
Sample
5b1aa2286d1b856ce45fc1bf075f36454aaac664460afb91185c4cc451291b62.dll
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
5b1aa2286d1b856ce45fc1bf075f36454aaac664460afb91185c4cc451291b62.dll
Resource
win10v2004-20240802-en
General
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Target
5b1aa2286d1b856ce45fc1bf075f36454aaac664460afb91185c4cc451291b62.dll
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Size
2.9MB
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MD5
abd99b6d60ee5d44f0e5448d3947b281
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SHA1
ef799bbe58d3d576e9e27e60e17e071725c975d8
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SHA256
5b1aa2286d1b856ce45fc1bf075f36454aaac664460afb91185c4cc451291b62
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SHA512
faf79a91f57c1e1c863e75614c0f4c9fb0acabdf7d4097c1554f09e1aef14f8efc0de3bc4261f3728da77fc548878532ceb1f76a1db1df485fcc10772419379c
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SSDEEP
49152:hk8XGHSOdOoyWzL/bI7UAnuqSrtdBDmfKtTaeBiDw0uv+Kx55+v0UbpeQM/TNSWs:XGy0FfDEUYuqSvBDmS3YDw0+eha78
Malware Config
Extracted
remcos
RemoteHost
privmerkt.com:6042
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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
false
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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-XE94AK
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screenshot_crypt
false
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screenshot_flag
false
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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
false
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take_screenshot_time
5
Signatures
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Blocklisted process makes network request 2 IoCs
flow pid Process 3 2592 rundll32.exe 6 2592 rundll32.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\*ChromeUpdate = "rundll32.exe C:\\Users\\Admin\\Documents\\FirefoxData.dll,EntryPoint" reg.exe -
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
pid Process 2084 rundll32.exe -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe -
Suspicious use of WriteProcessMemory 25 IoCs
description pid Process procid_target PID 1648 wrote to memory of 2084 1648 rundll32.exe 31 PID 1648 wrote to memory of 2084 1648 rundll32.exe 31 PID 1648 wrote to memory of 2084 1648 rundll32.exe 31 PID 1648 wrote to memory of 2084 1648 rundll32.exe 31 PID 1648 wrote to memory of 2084 1648 rundll32.exe 31 PID 1648 wrote to memory of 2084 1648 rundll32.exe 31 PID 1648 wrote to memory of 2084 1648 rundll32.exe 31 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2592 2084 rundll32.exe 32 PID 2084 wrote to memory of 2776 2084 rundll32.exe 33 PID 2084 wrote to memory of 2776 2084 rundll32.exe 33 PID 2084 wrote to memory of 2776 2084 rundll32.exe 33 PID 2084 wrote to memory of 2776 2084 rundll32.exe 33 PID 2776 wrote to memory of 2920 2776 cmd.exe 35 PID 2776 wrote to memory of 2920 2776 cmd.exe 35 PID 2776 wrote to memory of 2920 2776 cmd.exe 35 PID 2776 wrote to memory of 2920 2776 cmd.exe 35
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5b1aa2286d1b856ce45fc1bf075f36454aaac664460afb91185c4cc451291b62.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1648 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5b1aa2286d1b856ce45fc1bf075f36454aaac664460afb91185c4cc451291b62.dll,#12⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2084 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe"3⤵
- Blocklisted process makes network request
- System Location Discovery: System Language Discovery
PID:2592
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C:\Windows\SysWOW64\cmd.execmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f & exit3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2776 -
C:\Windows\SysWOW64\reg.exereg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\FirefoxData.dll",EntryPoint /f4⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
PID:2920
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