Analysis
- max time kernel
149s - max time network
148s - platform
windows7_x64 - resource
win7-20240704-en - resource tags
- submitted
31/07/2024, 03:33
General
- Target 5e030088befe754b287a43f30ebbddbbf4679cc353a1b6b68ee3c3dc2581fa90.exe
- Size 432KB
- Sample240731-d37m2ayekc
- SHA256 5e030088befe754b287a43f30ebbddbbf4679cc353a1b6b68ee3c3dc2581fa90
Malware Config
Extracted
-
remcos
-
RemoteHost
-
23.95.60.70:2404
-
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-TX30AO
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Loads dropped DLL 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 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 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5e030088befe754b287a43f30ebbddbbf4679cc353a1b6b68ee3c3dc2581fa90.exe"C:\Users\Admin\AppData\Local\Temp\5e030088befe754b287a43f30ebbddbbf4679cc353a1b6b68ee3c3dc2581fa90.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\5e030088befe754b287a43f30ebbddbbf4679cc353a1b6b68ee3c3dc2581fa90.exe"C:\Users\Admin\AppData\Local\Temp\5e030088befe754b287a43f30ebbddbbf4679cc353a1b6b68ee3c3dc2581fa90.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
System.dll
memory/2220-35-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-37-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-41-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-20-0x00000000778D0000-0x0000000077A79000-memory.dmp
memory/2220-40-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-22-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-39-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-28-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-29-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-30-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-38-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-32-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-31-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-34-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-33-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2220-36-0x0000000000460000-0x00000000014C2000-memory.dmp
memory/2224-17-0x0000000003EE0000-0x0000000005E8F000-memory.dmp
memory/2224-18-0x00000000778D1000-0x00000000779D2000-memory.dmp
memory/2224-26-0x0000000003EE0000-0x0000000005E8F000-memory.dmp
memory/2224-21-0x0000000003EE0000-0x0000000005E8F000-memory.dmp
memory/2224-19-0x00000000778D0000-0x0000000077A79000-memory.dmp