Analysis
- max time kernel
142s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
07/06/2024, 08:28
General
- Target e1d3e9feb67fde0b13f317d2bbfe700a6cc1249658b7b5a6970c944872a2e736.exe
- Size 1.5MB
- Sample240607-kc16wsee44
- SHA256 e1d3e9feb67fde0b13f317d2bbfe700a6cc1249658b7b5a6970c944872a2e736
Malware Config
Extracted
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remcos
-
Host
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213.183.58.19:4000
-
audio_folder
audio
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audio_path
%AppData%
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audio_record_time
5
-
connect_delay
0
-
connect_interval
5
-
copy_file
remcos.exe
-
copy_folder
remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
true
-
install_flag
false
-
install_path
%AppData%
-
keylog_crypt
true
-
keylog_file
read.dat
-
keylog_flag
false
-
keylog_folder
CastC
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keylog_path
%AppData%
-
mouse_option
false
-
mutex
remcos_sccafsoidz
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screens
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screenshot_path
%AppData%
-
screenshot_time
1
-
startup_value
remcos
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- detects Windows exceutables potentially bypassing UAC using eventvwr.exe 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 18 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\e1d3e9feb67fde0b13f317d2bbfe700a6cc1249658b7b5a6970c944872a2e736.exe"C:\Users\Admin\AppData\Local\Temp\e1d3e9feb67fde0b13f317d2bbfe700a6cc1249658b7b5a6970c944872a2e736.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"3⤵
- Executes dropped EXE
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-
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4136 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
sbietrcl.exe
memory/1416-35-0x0000000000730000-0x0000000000747000-memory.dmp
memory/2380-30-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/2380-39-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/2380-32-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/2380-31-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/3708-5-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/3708-28-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/3708-29-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/3708-6-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/3708-0-0x00000000749C2000-0x00000000749C3000-memory.dmp
memory/3708-2-0x00000000749C0000-0x0000000074F71000-memory.dmp
memory/3708-1-0x00000000749C0000-0x0000000074F71000-memory.dmp