General
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Target
30180908_signed·pdf.vbs
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Size
33KB
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Sample
241129-k5llxaxkev
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MD5
33788adfb67a0e0bf5a5fe58cb9c5617
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SHA1
a62c45afa541fdcccc5c97c432c78ce55b0a7a5b
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SHA256
609aaa35ee7b0582cb3e1e4e9f76d647c98377dac62eca602bf318578b61576f
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SHA512
9da759eba3eee9ed6d1b804ed8d26f1f59831d49543e393b6adf462343d98dbefabc0314c673b31a4c52857e0d975edbb8304c0e1ee7a375fd71f446ab655a50
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SSDEEP
768:WuEasaYzR+s1z3NkQpyhZ6d4nl3pVVCStrppuAP:zEasd+a3iQpy/V3/UStF3P
Static task
static1
Behavioral task
behavioral1
Sample
30180908_signed·pdf.vbs
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
30180908_signed·pdf.vbs
Resource
win10v2004-20241007-en
Malware Config
Extracted
remcos
RemoteHost
8766e34g8.duckdns.org:3782
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audio_folder
MicRecords
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audio_path
ApplicationPath
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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
true
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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-93TSMD
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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
Targets
-
-
Target
30180908_signed·pdf.vbs
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Size
33KB
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MD5
33788adfb67a0e0bf5a5fe58cb9c5617
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SHA1
a62c45afa541fdcccc5c97c432c78ce55b0a7a5b
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SHA256
609aaa35ee7b0582cb3e1e4e9f76d647c98377dac62eca602bf318578b61576f
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SHA512
9da759eba3eee9ed6d1b804ed8d26f1f59831d49543e393b6adf462343d98dbefabc0314c673b31a4c52857e0d975edbb8304c0e1ee7a375fd71f446ab655a50
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SSDEEP
768:WuEasaYzR+s1z3NkQpyhZ6d4nl3pVVCStrppuAP:zEasd+a3iQpy/V3/UStF3P
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Remcos family
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Detected Nirsoft tools
Free utilities often used by attackers which can steal passwords, product keys, etc.
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NirSoft MailPassView
Password recovery tool for various email clients
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NirSoft WebBrowserPassView
Password recovery tool for various web browsers
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Blocklisted process makes network request
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Uses browser remote debugging
Can be used control the browser and steal sensitive information such as credentials and session cookies.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Accesses Microsoft Outlook accounts
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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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Suspicious use of NtCreateThreadExHideFromDebugger
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Authentication Process
1Modify Registry
2