Analysis
-
max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
21/01/2024, 19:13
Static task
static1
Behavioral task
behavioral1
Sample
6dd05e374c550f42a7b400753a1a5a40.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
6dd05e374c550f42a7b400753a1a5a40.exe
Resource
win10v2004-20231215-en
General
-
Target
6dd05e374c550f42a7b400753a1a5a40.exe
-
Size
255KB
-
MD5
6dd05e374c550f42a7b400753a1a5a40
-
SHA1
b266fcb55bb01402f373a751a4d9e2018f489fb3
-
SHA256
040b879f7816d317d02b442f12abaa24d75362340878cdfbdce01c9b2c4eed10
-
SHA512
638f143ea51eb88f96475b5fa6c2d0f09e0f9b48c32cf7db1296f210bc0f4ebff2189cb93965171b2c761f10fd43a30c5b2e078e2a9f1b10c3b34fcffea645f2
-
SSDEEP
3072:LZ49oLUdKthw+vJ/Ya5ZT1oTwZTu0NQwPHNE0paqah8JAWzvtijyW2EM2DIcgU:LZHlTW0ZTyuYwPtuCxTvEM2DIG
Malware Config
Extracted
metasploit
encoder/call4_dword_xor
Signatures
-
MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
-
Modifies firewall policy service 2 TTPs 8 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile igfxcs32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications igfxcs32.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxcs32.exe = "C:\\Windows\\SysWOW64\\igfxcs32.exe:*:Enabled:Intel iDrive Monitor" igfxcs32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List igfxcs32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile igfxcs32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications igfxcs32.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxcs32.exe = "C:\\Windows\\SysWOW64\\igfxcs32.exe:*:Enabled:Intel iDrive Monitor" igfxcs32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List igfxcs32.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 6dd05e374c550f42a7b400753a1a5a40.exe -
Deletes itself 1 IoCs
pid Process 1688 igfxcs32.exe -
Executes dropped EXE 2 IoCs
pid Process 3176 igfxcs32.exe 1688 igfxcs32.exe -
resource yara_rule behavioral2/memory/4160-0-0x0000000000400000-0x0000000000467000-memory.dmp upx behavioral2/memory/4160-2-0x0000000000400000-0x0000000000467000-memory.dmp upx behavioral2/memory/4160-4-0x0000000000400000-0x0000000000467000-memory.dmp upx behavioral2/memory/4160-31-0x0000000000400000-0x0000000000467000-memory.dmp upx behavioral2/memory/4160-39-0x0000000000400000-0x0000000000467000-memory.dmp upx behavioral2/memory/1688-46-0x0000000000400000-0x0000000000467000-memory.dmp upx behavioral2/memory/1688-47-0x0000000000400000-0x0000000000467000-memory.dmp upx behavioral2/memory/1688-51-0x0000000000400000-0x0000000000467000-memory.dmp upx behavioral2/memory/1688-57-0x0000000000400000-0x0000000000467000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Intel iDrive Monitor = "C:\\Windows\\SysWOW64\\igfxcs32.exe" igfxcs32.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 6dd05e374c550f42a7b400753a1a5a40.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 6dd05e374c550f42a7b400753a1a5a40.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum igfxcs32.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 igfxcs32.exe -
Drops file in System32 directory 5 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\ 6dd05e374c550f42a7b400753a1a5a40.exe File opened for modification C:\Windows\SysWOW64\igfxcs32.exe 6dd05e374c550f42a7b400753a1a5a40.exe File created C:\Windows\SysWOW64\igfxcs32.exe 6dd05e374c550f42a7b400753a1a5a40.exe File opened for modification C:\Windows\SysWOW64\ igfxcs32.exe File opened for modification C:\Windows\SysWOW64\igfxcs32.exe igfxcs32.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4064 set thread context of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 3176 set thread context of 1688 3176 igfxcs32.exe 90 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 6dd05e374c550f42a7b400753a1a5a40.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
pid Process 4160 6dd05e374c550f42a7b400753a1a5a40.exe 4160 6dd05e374c550f42a7b400753a1a5a40.exe 4160 6dd05e374c550f42a7b400753a1a5a40.exe 4160 6dd05e374c550f42a7b400753a1a5a40.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe 1688 igfxcs32.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 4064 wrote to memory of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 4064 wrote to memory of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 4064 wrote to memory of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 4064 wrote to memory of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 4064 wrote to memory of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 4064 wrote to memory of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 4064 wrote to memory of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 4064 wrote to memory of 4160 4064 6dd05e374c550f42a7b400753a1a5a40.exe 86 PID 4160 wrote to memory of 3176 4160 6dd05e374c550f42a7b400753a1a5a40.exe 89 PID 4160 wrote to memory of 3176 4160 6dd05e374c550f42a7b400753a1a5a40.exe 89 PID 4160 wrote to memory of 3176 4160 6dd05e374c550f42a7b400753a1a5a40.exe 89 PID 3176 wrote to memory of 1688 3176 igfxcs32.exe 90 PID 3176 wrote to memory of 1688 3176 igfxcs32.exe 90 PID 3176 wrote to memory of 1688 3176 igfxcs32.exe 90 PID 3176 wrote to memory of 1688 3176 igfxcs32.exe 90 PID 3176 wrote to memory of 1688 3176 igfxcs32.exe 90 PID 3176 wrote to memory of 1688 3176 igfxcs32.exe 90 PID 3176 wrote to memory of 1688 3176 igfxcs32.exe 90 PID 3176 wrote to memory of 1688 3176 igfxcs32.exe 90 PID 1688 wrote to memory of 3496 1688 igfxcs32.exe 47 PID 1688 wrote to memory of 3496 1688 igfxcs32.exe 47
Processes
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3496
-
C:\Users\Admin\AppData\Local\Temp\6dd05e374c550f42a7b400753a1a5a40.exe"C:\Users\Admin\AppData\Local\Temp\6dd05e374c550f42a7b400753a1a5a40.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4064 -
C:\Users\Admin\AppData\Local\Temp\6dd05e374c550f42a7b400753a1a5a40.exe"C:\Users\Admin\AppData\Local\Temp\6dd05e374c550f42a7b400753a1a5a40.exe"3⤵
- Checks computer location settings
- Maps connected drives based on registry
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4160 -
C:\Windows\SysWOW64\igfxcs32.exe"C:\Windows\SysWOW64\igfxcs32.exe" C:\Users\Admin\AppData\Local\Temp\6DD05E~1.EXE4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3176 -
C:\Windows\SysWOW64\igfxcs32.exe"C:\Windows\SysWOW64\igfxcs32.exe" C:\Users\Admin\AppData\Local\Temp\6DD05E~1.EXE5⤵
- Modifies firewall policy service
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1688
-
-
-
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
255KB
MD56dd05e374c550f42a7b400753a1a5a40
SHA1b266fcb55bb01402f373a751a4d9e2018f489fb3
SHA256040b879f7816d317d02b442f12abaa24d75362340878cdfbdce01c9b2c4eed10
SHA512638f143ea51eb88f96475b5fa6c2d0f09e0f9b48c32cf7db1296f210bc0f4ebff2189cb93965171b2c761f10fd43a30c5b2e078e2a9f1b10c3b34fcffea645f2