Analysis
- max time kernel
148s - max time network
134s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
12/08/2024, 15:40
General
- Target FedEXArrival-AWB102235506763.exe
- Size 493KB
- Sample240812-s38mnaxeqp
- SHA256 7903ae5797aeb3fc2438a2681ce14e5957b389597a8b63c72d14de1191e27604
Malware Config
Extracted
-
remcos
-
benchao
-
tochisglobal.ddns.net:6426
-
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-9R4HLX
-
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 7 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- 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 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 SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\FedEXArrival-AWB102235506763.exe"C:\Users\Admin\AppData\Local\Temp\FedEXArrival-AWB102235506763.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\windows mail\wab.exe"C:\Users\Admin\AppData\Local\Temp\FedEXArrival-AWB102235506763.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
LangDLL.dll
System.dll
memory/2052-39-0x00000000057D0000-0x000000000700A000-memory.dmp
memory/2052-28-0x00000000057D0000-0x000000000700A000-memory.dmp
memory/2052-29-0x0000000077171000-0x0000000077291000-memory.dmp
memory/2052-30-0x0000000073FD5000-0x0000000073FD6000-memory.dmp
memory/2052-32-0x00000000057D0000-0x000000000700A000-memory.dmp
memory/4880-31-0x0000000002070000-0x00000000038AA000-memory.dmp
memory/4880-36-0x0000000000E10000-0x0000000002064000-memory.dmp
memory/4880-34-0x0000000077215000-0x0000000077216000-memory.dmp
memory/4880-41-0x0000000000E10000-0x0000000002064000-memory.dmp
memory/4880-44-0x0000000002070000-0x00000000038AA000-memory.dmp
memory/4880-45-0x0000000000E10000-0x0000000002064000-memory.dmp
memory/4880-47-0x0000000077171000-0x0000000077291000-memory.dmp
memory/4880-49-0x0000000000E10000-0x0000000002064000-memory.dmp
memory/4880-33-0x00000000771F8000-0x00000000771F9000-memory.dmp
memory/4880-52-0x0000000000E10000-0x0000000002064000-memory.dmp
memory/4880-55-0x0000000000E10000-0x0000000002064000-memory.dmp
memory/4880-58-0x0000000000E10000-0x0000000002064000-memory.dmp