General
-
Target
Document BT24·pdf.vbs
-
Size
33KB
-
Sample
241128-vtnx1atpgt
-
MD5
b9d77e317447cf7b4fc1b538d04a35d7
-
SHA1
4bfff79ba434d7c5a508f9ba2720f4ef47cfecec
-
SHA256
1e74e14032fe7b84a6285d72cfea681f4ec1d0bffe896f02fac5f0c5e5b96060
-
SHA512
9691361f42668c8dcf9764ac86ad355c5039ca927140ce732452cba7df12bad70ff46c87c54cd8ae6e6cf4673e3bc57894663c8b301f0e40344c0b21dab20ce7
-
SSDEEP
768:EA9as2DrXeg09BTUUsKNq4Hm8hZn6TgXzwbVV+E2rEJ9YnCmw6fd:D9asyevU844HT/6azCkE2oJIu6d
Static task
static1
Behavioral task
behavioral1
Sample
Document BT24·pdf.vbs
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Document BT24·pdf.vbs
Resource
win10v2004-20241007-en
Malware Config
Extracted
remcos
RemoteHost
8766e34g8.duckdns.org:3782
-
audio_folder
MicRecords
-
audio_path
ApplicationPath
-
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
true
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-93TSMD
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Targets
-
-
Target
Document BT24·pdf.vbs
-
Size
33KB
-
MD5
b9d77e317447cf7b4fc1b538d04a35d7
-
SHA1
4bfff79ba434d7c5a508f9ba2720f4ef47cfecec
-
SHA256
1e74e14032fe7b84a6285d72cfea681f4ec1d0bffe896f02fac5f0c5e5b96060
-
SHA512
9691361f42668c8dcf9764ac86ad355c5039ca927140ce732452cba7df12bad70ff46c87c54cd8ae6e6cf4673e3bc57894663c8b301f0e40344c0b21dab20ce7
-
SSDEEP
768:EA9as2DrXeg09BTUUsKNq4Hm8hZn6TgXzwbVV+E2rEJ9YnCmw6fd:D9asyevU844HT/6azCkE2oJIu6d
-
Remcos family
-
Detected Nirsoft tools
Free utilities often used by attackers which can steal passwords, product keys, etc.
-
NirSoft MailPassView
Password recovery tool for various email clients
-
NirSoft WebBrowserPassView
Password recovery tool for various web browsers
-
Blocklisted process makes network request
-
Uses browser remote debugging
Can be used control the browser and steal sensitive information such as credentials and session cookies.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Accesses Microsoft Outlook accounts
-
Adds Run key to start application
-
Legitimate hosting services abused for malware hosting/C2
-
Suspicious use of NtCreateThreadExHideFromDebugger
-
Suspicious use of NtSetInformationThreadHideFromDebugger
-
Suspicious use of SetThreadContext
-
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Modify Authentication Process
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Authentication Process
1Modify Registry
3