Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
10/01/2023, 04:29
General
- Target SecuriteInfo.com.Win32.DropperX-gen.21486.24443.exe
- Size 125KB
- Sample230110-e38e1acc95
- SHA256 c35fb71c0a41185e8455def562dbbf6603445b85b6ec996a9320c2e115ab217b
Malware Config
Extracted
-
remcos
-
RemoteHost
-
obologs.work.gd:34346
-
audio_folder
MicRecords
-
audio_record_time
5
-
connect_delay
0
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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
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-5NOBMZ
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
startup_value
Remcos
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.21486.24443.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.21486.24443.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe2⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/2560-150-0x0000000000400000-0x000000000047F000-memory.dmp
memory/2560-149-0x0000000000400000-0x000000000047F000-memory.dmp
memory/2560-148-0x0000000000400000-0x000000000047F000-memory.dmp
memory/2560-147-0x0000000000400000-0x000000000047F000-memory.dmp
memory/2560-146-0x0000000000400000-0x000000000047F000-memory.dmp
memory/3048-133-0x00000000059F0000-0x0000000005F94000-memory.dmp
memory/3048-134-0x0000000005520000-0x00000000055B2000-memory.dmp
memory/3048-135-0x00000000055E0000-0x00000000055EA000-memory.dmp
memory/3048-136-0x0000000008B70000-0x0000000008B92000-memory.dmp
memory/3048-132-0x0000000000B60000-0x0000000000B84000-memory.dmp
memory/4304-140-0x00000000054A0000-0x0000000005506000-memory.dmp
memory/4304-144-0x0000000006100000-0x000000000611A000-memory.dmp
memory/4304-143-0x0000000007250000-0x00000000078CA000-memory.dmp
memory/4304-142-0x0000000005C00000-0x0000000005C1E000-memory.dmp
memory/4304-141-0x00000000055C0000-0x0000000005626000-memory.dmp
memory/4304-139-0x0000000004D20000-0x0000000005348000-memory.dmp
memory/4304-138-0x0000000002680000-0x00000000026B6000-memory.dmp