General
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Target
f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea.exe
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Size
92KB
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Sample
250102-cbxs3sxjd1
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MD5
76588f4bc306a7adbea175dfbdd9b0bb
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SHA1
e4d32b94becf0a27194eddefd3acb709924175de
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SHA256
f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea
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SHA512
f1a7d5a18da82c25a1c8be319b52e5997f8e9ca45a2b07f6ab173dbe578ba3f4d81de5ad7d1633a324798260bd6342ee9ffbbfeac155d52bd1c1f98e7ef44b1c
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SSDEEP
1536:4hhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6vre:ehzYTGWVvJ8f2v1TbPzuMsIFSHNThy+H
Behavioral task
behavioral1
Sample
f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea.exe
Resource
win7-20240903-en
Malware Config
Extracted
remcos
1.7 Pro
Host
nhatde0166-47406.portmap.host:47406
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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
true
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hide_file
true
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hide_keylog_file
true
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install_flag
true
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install_path
%WinDir%\System32
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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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keylog_path
%WinDir%\System32
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mouse_option
false
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mutex
remcos_whmmzkguja
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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
f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea.exe
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Size
92KB
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MD5
76588f4bc306a7adbea175dfbdd9b0bb
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SHA1
e4d32b94becf0a27194eddefd3acb709924175de
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SHA256
f906133186afd69662f2f43f5b85edf5048e823a3e38709a20e27c9e22d991ea
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SHA512
f1a7d5a18da82c25a1c8be319b52e5997f8e9ca45a2b07f6ab173dbe578ba3f4d81de5ad7d1633a324798260bd6342ee9ffbbfeac155d52bd1c1f98e7ef44b1c
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SSDEEP
1536:4hhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6vre:ehzYTGWVvJ8f2v1TbPzuMsIFSHNThy+H
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Modifies WinLogon for persistence
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Remcos family
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Adds policy Run key to start application
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Deletes itself
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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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Modifies WinLogon
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Drops file in System32 directory
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
2Winlogon Helper DLL
2Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
2Winlogon Helper DLL
2Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
6