Analysis
- max time kernel
150s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20231127-en - resource tags
- submitted
05/12/2023, 04:24
General
- Target 3de1aae9bb3170302c83d08b4f68e6c3294a32bd79d146d9673dfbee0bc860cd.exe
- Size 5.4MB
- Sample231205-e1sxjahe74
- SHA256 3de1aae9bb3170302c83d08b4f68e6c3294a32bd79d146d9673dfbee0bc860cd
Malware Config
Signatures
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- VMProtect packed file 4 IoCs
Detects executables packed with VMProtect commercial packer.
- Enumerates connected drives 3 TTPs 22 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Drops file in Windows directory 5 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 2 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\3de1aae9bb3170302c83d08b4f68e6c3294a32bd79d146d9673dfbee0bc860cd.exe"C:\Users\Admin\AppData\Local\Temp\3de1aae9bb3170302c83d08b4f68e6c3294a32bd79d146d9673dfbee0bc860cd.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\windows\Runn\Yloux.exe"C:\windows\Runn\Yloux.exe"2⤵
- Executes dropped EXE
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
-
C:\Users\Admin\AppData\Local\Temp\{1DA5AA6A-EC4D-425c-B4CD-386A2CF2F46B}.exe"C:\Users\Admin\AppData\Local\Temp\{1DA5AA6A-EC4D-425c-B4CD-386A2CF2F46B}.exe" /s "C:\Users\Admin\AppData\Local\Temp\\{6C3060B7-52BC-484a-B3B5-ADBF4FD8EFA0}"1⤵
- Executes dropped EXE
- Modifies registry class
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
RegWorkshop.ini
RegWorkshop.ini
{1DA5AA6A-EC4D-425c-B4CD-386A2CF2F46B}.exe
{1DA5AA6A-EC4D-425c-B4CD-386A2CF2F46B}.exe
{6C3060B7-52BC-484a-B3B5-ADBF4FD8EFA0}
Yloux.exe
Yloux.exe
1.bin
Yloux.exe
memory/2400-30-0x0000000180000000-0x0000000180033000-memory.dmp
memory/2400-184-0x0000000180000000-0x0000000180033000-memory.dmp
memory/2400-37-0x0000000180000000-0x0000000180033000-memory.dmp
memory/2400-212-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-39-0x0000000180000000-0x0000000180033000-memory.dmp
memory/2400-210-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-25-0x0000000000930000-0x0000000000A30000-memory.dmp
memory/2400-36-0x0000000180000000-0x0000000180033000-memory.dmp
memory/2400-204-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-203-0x0000000180000000-0x0000000180033000-memory.dmp
memory/2400-183-0x0000000180000000-0x0000000180033000-memory.dmp
memory/2400-197-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-185-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-186-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-187-0x0000000002C20000-0x0000000002C5E000-memory.dmp
memory/2400-188-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2400-202-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-191-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-192-0x00000000028A0000-0x00000000028E4000-memory.dmp
memory/2400-200-0x0000000180000000-0x0000000180033000-memory.dmp
memory/2400-195-0x0000000000930000-0x0000000000A30000-memory.dmp
memory/4900-6-0x0000000010000000-0x0000000010354000-memory.dmp
memory/4900-0-0x00000000010E0000-0x00000000010E1000-memory.dmp
memory/4900-190-0x00000000002E0000-0x0000000000B87000-memory.dmp
memory/4900-3-0x00000000002E0000-0x0000000000B87000-memory.dmp
memory/4900-5-0x0000000003130000-0x0000000003480000-memory.dmp
memory/4900-1-0x00000000002E0000-0x0000000000B87000-memory.dmp
memory/4900-38-0x00000000002E0000-0x0000000000B87000-memory.dmp