Analysis
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max time kernel
299s -
max time network
276s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
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submitted
27/03/2025, 16:32
General
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Target
RFQ_0325.scr
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Size
724KB
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MD5
a479acd2da79c2dfeabc05b5d6194fba
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SHA1
18e8097c57cf691e5c2719ade7d2bca4573d9d23
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SHA256
359ab600c1c1cb25744c5fd24b563ed2fbcd4918061e6409929db2c8e16a070c
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SHA512
0a2d4564e0cd54394332bba59a9fbeb24afff121c420d51e5613bd3af333418ed4ef0b2b7bfcddd992857b8ec4cad773142028cbb48eaeeb8c0e433082070023
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SSDEEP
12288:LR3BUI4bnFjfy75TC+WfSCgoSdYza46l0xFXc3gIwEH:V3GI4jFe7EJKT1nl0Pg73H
Malware Config
Extracted
remcos
New-Host
176.65.142.81:9090
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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
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-C2AG7V
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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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Guloader family
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Remcos
Remcos is a closed-source remote control and surveillance software.
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Remcos family
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Loads dropped DLL 2 IoCs
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Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
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Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
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Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
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Drops file in Program Files directory 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Suspicious behavior: MapViewOfSection 1 IoCs
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Suspicious use of FindShellTrayWindow 1 IoCs
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Suspicious use of SendNotifyMessage 1 IoCs
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Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ_0325.scr"C:\Users\Admin\AppData\Local\Temp\RFQ_0325.scr" /S1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\RFQ_0325.scr"C:\Users\Admin\AppData\Local\Temp\RFQ_0325.scr" /S2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
11KB
MD5a436db0c473a087eb61ff5c53c34ba27
SHA165ea67e424e75f5065132b539c8b2eda88aa0506
SHA25675ed40311875312617d6711baed0be29fcaee71031ca27a8d308a72b15a51e49
SHA512908f46a855480af6eacb2fb64de0e60b1e04bbb10b23992e2cf38a4cbebdcd7d3928c4c022d7ad9f7479265a8f426b93eef580afec95570e654c360d62f5e08d
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
49.5MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
49.5MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
-
Filesize
16.4MB
-
Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
49.5MB
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Filesize
1.0MB
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Filesize
1.7MB
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Filesize
49.5MB