General
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Target
b3fa7c61b863e682a33b8f9059dd567a189f339ea94bf5aa96aeb3ab99e0bd5bN.exe
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Size
1.0MB
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Sample
241220-a7538avrdl
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MD5
4dde298c36c37c3f07c7bf65213c2f50
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SHA1
c7655d68e8437df0638c8af818830fb767e05872
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SHA256
b3fa7c61b863e682a33b8f9059dd567a189f339ea94bf5aa96aeb3ab99e0bd5b
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SHA512
6f416bb005ad5df0cdce3125aa2f0eca01e88b8909c0c1695cb369b1b8a3eefeaf3f7c3895b4c1a211e5856bd317e6a9419c10e6f5cb2ffe2869d9ce8e47d170
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SSDEEP
12288:SfeDOa9rDeYSorINpj5XqkJD0QrOod7XxlW91RRep+rgRNyA55IxJ2DJW//oK1:xD39v74lfGQrFUspugRNJI2DJW//oe
Static task
static1
Behavioral task
behavioral1
Sample
b3fa7c61b863e682a33b8f9059dd567a189f339ea94bf5aa96aeb3ab99e0bd5bN.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b3fa7c61b863e682a33b8f9059dd567a189f339ea94bf5aa96aeb3ab99e0bd5bN.exe
Resource
win10v2004-20241007-en
Malware Config
Extracted
remcos
1.7 Pro
Host
213.183.58.19:4000
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audio_folder
audio
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audio_path
%AppData%
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audio_record_time
5
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connect_delay
0
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connect_interval
5
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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
true
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install_flag
false
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install_path
%AppData%
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keylog_crypt
true
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keylog_file
read.dat
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keylog_flag
false
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keylog_folder
CastC
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keylog_path
%AppData%
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mouse_option
false
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mutex
remcos_sccafsoidz
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screens
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screenshot_path
%AppData%
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screenshot_time
1
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startup_value
remcos
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take_screenshot_option
false
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take_screenshot_time
5
Extracted
remcos
Host
213.183.58.19:4000
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audio_folder
audio
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audio_path
%AppData%
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audio_record_time
5
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connect_delay
0
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connect_interval
5
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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
true
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install_flag
false
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install_path
%AppData%
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keylog_crypt
true
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keylog_file
read.dat
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keylog_flag
false
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keylog_folder
CastC
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keylog_path
%AppData%
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mouse_option
false
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mutex
remcos_sccafsoidz
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screens
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screenshot_path
%AppData%
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screenshot_time
1
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startup_value
remcos
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take_screenshot_option
false
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take_screenshot_time
5
Targets
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Target
b3fa7c61b863e682a33b8f9059dd567a189f339ea94bf5aa96aeb3ab99e0bd5bN.exe
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Size
1.0MB
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MD5
4dde298c36c37c3f07c7bf65213c2f50
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SHA1
c7655d68e8437df0638c8af818830fb767e05872
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SHA256
b3fa7c61b863e682a33b8f9059dd567a189f339ea94bf5aa96aeb3ab99e0bd5b
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SHA512
6f416bb005ad5df0cdce3125aa2f0eca01e88b8909c0c1695cb369b1b8a3eefeaf3f7c3895b4c1a211e5856bd317e6a9419c10e6f5cb2ffe2869d9ce8e47d170
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SSDEEP
12288:SfeDOa9rDeYSorINpj5XqkJD0QrOod7XxlW91RRep+rgRNyA55IxJ2DJW//oK1:xD39v74lfGQrFUspugRNJI2DJW//oe
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Remcos family
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1