Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
13/11/2024, 02:11
General
- Target NVCleanstall_1.16.0/NVCleanstall_1.16.0.exe
- Size 3.0MB
- Sample241113-cma4fsvcld
- SHA256 fbb5b3960cf51f5c4cdeee63af58abb17f65f4b7849a07d694e21f39fc78819f
Malware Config
Extracted
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remcos
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New
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95.217.148.142:9004
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audio_folder
MicRecords
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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
-
keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
-
mouse_option
false
-
mutex
SSS1ooosSAweewwe-X6B4E4
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screenshot_crypt
false
-
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
-
take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Remcos family
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\NVCleanstall_1.16.0\NVCleanstall_1.16.0.exe"C:\Users\Admin\AppData\Local\Temp\NVCleanstall_1.16.0\NVCleanstall_1.16.0.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\NVCleanstall_1.16.0\NVCleanstall_1.16.0.exe"C:\Users\Admin\AppData\Local\Temp\NVCleanstall_1.16.0\NVCleanstall_1.16.0.exe" /VERYSILENT2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\NVCleanstall_1.16.0\NVCleanstall_1.16.0.exe"C:\Users\Admin\AppData\Roaming\NVCleanstall_1.16.0\NVCleanstall_1.16.0.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Roaming\scr_previw.exe"C:\Users\Admin\AppData\Roaming\scr_previw.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Browserload\scr_previw.exeC:\Users\Admin\AppData\Roaming\Browserload\scr_previw.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\SysWOW64\cmd.exe5⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe6⤵
- System Location Discovery: System Language Discovery
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
75e7d5ea
NVCleanstall_1.16.0.exe
cygrt
d3dx9_43.dll
gbxchd
scr_previw.exe
memory/1560-3-0x0000000000AE0000-0x0000000000AE1000-memory.dmp
memory/1560-27-0x0000000000400000-0x000000000070A000-memory.dmp
memory/2252-30-0x0000025269710000-0x0000025269CD0000-memory.dmp
memory/2252-24-0x00007FF887833000-0x00007FF887835000-memory.dmp
memory/2252-31-0x000002524F4D0000-0x000002524F4F2000-memory.dmp
memory/2252-32-0x000002526B000000-0x000002526B4CC000-memory.dmp
memory/2252-33-0x000002524F4A0000-0x000002524F4A6000-memory.dmp
memory/2252-34-0x000002526AE20000-0x000002526AE28000-memory.dmp
memory/2252-36-0x000002526AE70000-0x000002526AE7E000-memory.dmp
memory/2252-35-0x000002526AEA0000-0x000002526AED8000-memory.dmp
memory/2252-28-0x000002524ED30000-0x000002524F0F4000-memory.dmp
memory/2252-56-0x00007FF887833000-0x00007FF887835000-memory.dmp
memory/2336-52-0x00007FF8A6110000-0x00007FF8A6305000-memory.dmp
memory/2336-53-0x0000000074820000-0x000000007499B000-memory.dmp
memory/2336-51-0x0000000074820000-0x000000007499B000-memory.dmp
memory/3428-61-0x00007FF8A6110000-0x00007FF8A6305000-memory.dmp
memory/3428-70-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-74-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-73-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-72-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-71-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-69-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-62-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-65-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-66-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-67-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3428-68-0x0000000000570000-0x00000000005F4000-memory.dmp
memory/3900-59-0x0000000074820000-0x000000007499B000-memory.dmp
memory/3900-57-0x00007FF8A6110000-0x00007FF8A6305000-memory.dmp
memory/4344-39-0x00007FF8A6110000-0x00007FF8A6305000-memory.dmp
memory/4344-38-0x0000000074820000-0x000000007499B000-memory.dmp
memory/4760-0-0x0000000002810000-0x0000000002811000-memory.dmp
memory/4760-4-0x0000000000400000-0x000000000070A000-memory.dmp