Analysis
- max time kernel
148s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
05/04/2024, 11:41
General
- Target TSTS 0005A.exe
- Size 922KB
- Sample240405-ntewrsbd44
- SHA256 f4eaa74eb268a58cff6f5d37607758bd49cc00af060da799857ae10cfd59efb2
Malware Config
Extracted
-
remcos
-
RemoteHost
-
sembe.duckdns.org:14645
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audio_folder
MicRecords
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
remcos.exe
-
copy_folder
Remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
true
-
install_flag
false
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
notess
-
keylog_path
%AppData%
-
mouse_option
false
-
mutex
Rmc-P0AEMX
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
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.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 24 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vcEDbAjawlTHE.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vcEDbAjawlTHE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6D12.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"2⤵
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_431gzdhd.le1.ps1
tmp6D12.tmp
logs.dat
memory/3168-6-0x0000000005620000-0x0000000005630000-memory.dmp
memory/3168-4-0x00000000056E0000-0x00000000056F0000-memory.dmp
memory/3168-5-0x0000000005570000-0x000000000557A000-memory.dmp
memory/3168-30-0x0000000074850000-0x0000000075000000-memory.dmp
memory/3168-7-0x00000000056C0000-0x00000000056CC000-memory.dmp
memory/3168-8-0x0000000006B70000-0x0000000006C30000-memory.dmp
memory/3168-9-0x00000000091F0000-0x000000000928C000-memory.dmp
memory/3168-3-0x0000000005470000-0x0000000005502000-memory.dmp
memory/3168-0-0x00000000008F0000-0x00000000009D8000-memory.dmp
memory/3168-2-0x0000000005A20000-0x0000000005FC4000-memory.dmp
memory/3168-1-0x0000000074850000-0x0000000075000000-memory.dmp
memory/3520-45-0x0000000006830000-0x000000000687C000-memory.dmp
memory/3520-61-0x0000000007AC0000-0x0000000007ADA000-memory.dmp
memory/3520-20-0x00000000056D0000-0x00000000056F2000-memory.dmp
memory/3520-14-0x0000000002E70000-0x0000000002EA6000-memory.dmp
memory/3520-76-0x0000000074850000-0x0000000075000000-memory.dmp
memory/3520-73-0x0000000007DE0000-0x0000000007DE8000-memory.dmp
memory/3520-23-0x00000000058E0000-0x0000000005946000-memory.dmp
memory/3520-22-0x0000000005870000-0x00000000058D6000-memory.dmp
memory/3520-72-0x0000000007E00000-0x0000000007E1A000-memory.dmp
memory/3520-19-0x0000000005460000-0x0000000005470000-memory.dmp
memory/3520-71-0x0000000007D00000-0x0000000007D14000-memory.dmp
memory/3520-68-0x0000000007CF0000-0x0000000007CFE000-memory.dmp
memory/3520-18-0x0000000005AA0000-0x00000000060C8000-memory.dmp
memory/3520-66-0x0000000007CC0000-0x0000000007CD1000-memory.dmp
memory/3520-28-0x0000000006180000-0x00000000064D4000-memory.dmp
memory/3520-65-0x0000000007D40000-0x0000000007DD6000-memory.dmp
memory/3520-44-0x00000000067A0000-0x00000000067BE000-memory.dmp
memory/3520-15-0x0000000074850000-0x0000000075000000-memory.dmp
memory/3520-47-0x0000000007720000-0x0000000007752000-memory.dmp
memory/3520-46-0x000000007F050000-0x000000007F060000-memory.dmp
memory/3520-48-0x0000000071EF0000-0x0000000071F3C000-memory.dmp
memory/3520-58-0x0000000006D50000-0x0000000006D6E000-memory.dmp
memory/3520-59-0x0000000007970000-0x0000000007A13000-memory.dmp
memory/3520-17-0x0000000005460000-0x0000000005470000-memory.dmp
memory/3520-60-0x0000000008110000-0x000000000878A000-memory.dmp
memory/3520-63-0x0000000007B30000-0x0000000007B3A000-memory.dmp
memory/4196-81-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-64-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-43-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-38-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-67-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-37-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-29-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-27-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-21-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-26-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-83-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-24-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-62-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-84-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-91-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-92-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-99-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-100-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-107-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4196-108-0x0000000000400000-0x0000000000482000-memory.dmp