Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20250217-en - resource tags
- submitted
28/02/2025, 04:31
General
- Target Bukti_Transfer..pdf.exe
- Size 1.2MB
- Sample250228-e5mlba1saw
- SHA256 e9c8eec1859524e1d0bc49cf7156a0eb867af6d301b6c98ee82c425ab5d12bda
Malware Config
Extracted
-
remcos
-
FEB 19
-
austin99.duckdns.org:9373
-
103.186.117.61:9373
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sales778.bounceme.net:9373
-
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
false
-
install_flag
false
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-7BJJCC
-
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.
- Remcos family
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- 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).
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 36 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 18 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Bukti_Transfer..pdf.exe"C:\Users\Admin\AppData\Local\Temp\Bukti_Transfer..pdf.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- 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\ioVECsnbBNWOws.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ioVECsnbBNWOws" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF944.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\Bukti_Transfer..pdf.exe"C:\Users\Admin\AppData\Local\Temp\Bukti_Transfer..pdf.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
__PSScriptPolicyTest_fmmxprq4.mtz.ps1
tmpF944.tmp
memory/1104-8-0x0000000008330000-0x0000000008416000-memory.dmp
memory/1104-10-0x0000000074E9E000-0x0000000074E9F000-memory.dmp
memory/1104-5-0x00000000069E0000-0x00000000069EA000-memory.dmp
memory/1104-6-0x0000000074E90000-0x0000000075640000-memory.dmp
memory/1104-7-0x0000000007FB0000-0x000000000804C000-memory.dmp
memory/1104-30-0x0000000074E90000-0x0000000075640000-memory.dmp
memory/1104-9-0x0000000006C10000-0x0000000006C28000-memory.dmp
memory/1104-4-0x00000000060E0000-0x00000000065AC000-memory.dmp
memory/1104-11-0x0000000074E90000-0x0000000075640000-memory.dmp
memory/1104-12-0x0000000007C20000-0x0000000007CE0000-memory.dmp
memory/1104-3-0x0000000005580000-0x0000000005612000-memory.dmp
memory/1104-2-0x0000000005B30000-0x00000000060D4000-memory.dmp
memory/1104-1-0x0000000000A40000-0x0000000000B72000-memory.dmp
memory/1104-0-0x0000000074E9E000-0x0000000074E9F000-memory.dmp
memory/3240-38-0x00000000055A0000-0x0000000005606000-memory.dmp
memory/3240-60-0x00000000076F0000-0x0000000007D6A000-memory.dmp
memory/3240-28-0x0000000074E90000-0x0000000075640000-memory.dmp
memory/3240-17-0x00000000047D0000-0x0000000004806000-memory.dmp
memory/3240-71-0x0000000074E90000-0x0000000075640000-memory.dmp
memory/3240-68-0x00000000073D0000-0x00000000073D8000-memory.dmp
memory/3240-21-0x0000000074E90000-0x0000000075640000-memory.dmp
memory/3240-67-0x00000000073F0000-0x000000000740A000-memory.dmp
memory/3240-32-0x0000000004EC0000-0x0000000004EE2000-memory.dmp
memory/3240-39-0x0000000005710000-0x0000000005776000-memory.dmp
memory/3240-20-0x0000000004F70000-0x0000000005598000-memory.dmp
memory/3240-19-0x0000000074E90000-0x0000000075640000-memory.dmp
memory/3240-44-0x0000000005880000-0x0000000005BD4000-memory.dmp
memory/3240-45-0x0000000005D60000-0x0000000005D7E000-memory.dmp
memory/3240-46-0x0000000005DA0000-0x0000000005DEC000-memory.dmp
memory/3240-47-0x0000000006D20000-0x0000000006D52000-memory.dmp
memory/3240-48-0x0000000071E50000-0x0000000071E9C000-memory.dmp
memory/3240-58-0x0000000006350000-0x000000000636E000-memory.dmp
memory/3240-59-0x0000000006F70000-0x0000000007013000-memory.dmp
memory/3240-66-0x00000000072F0000-0x0000000007304000-memory.dmp
memory/3240-61-0x00000000070B0000-0x00000000070CA000-memory.dmp
memory/3240-62-0x0000000007120000-0x000000000712A000-memory.dmp
memory/3240-63-0x0000000007330000-0x00000000073C6000-memory.dmp
memory/3240-64-0x00000000072B0000-0x00000000072C1000-memory.dmp
memory/3240-65-0x00000000072E0000-0x00000000072EE000-memory.dmp
memory/5004-79-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-90-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-24-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-22-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-76-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-78-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-31-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-27-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-23-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-89-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-80-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-97-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-98-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-105-0x0000000000400000-0x000000000047F000-memory.dmp
memory/5004-106-0x0000000000400000-0x000000000047F000-memory.dmp