General
- Target WindowsUpdate.exe
- Size 19.9MB
- Sample260703-3fx8hsdt6p
- SHA256 a48cd0cdf81099014e4fba7634733a2b63055fb963ce1a1798b89f20189453f2
- MD5 80065c6fdf08d712beb8f4d79acbb9aa
- SHA1 033965d592e478c7420719d1e7efa48d06c6c3b3
- SHA512 c92f9f0af95fdd5d97c4d5b49862d2dd687e6467ca199fde7c1e6c6ea1a796020c5cc505a9192855b0fa73379ef0b9d2b0e56999b2271eed7806263b983a93f9
- SSDEEP 393216:DiYb4audHAoYydA++V1rvUvumuWwHVa0SkmBNqhqQHWvE2L:t45HAo32zL9mJwVbjEBvvhL
- TLSH T1572733927271547EC292887432B975A3FBC5296243BA80F377B185811A73DC09B7E1BF
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
WindowsUpdate.exe
Resource
win11-20260513-en
Malware Config
Targets
-
- Target WindowsUpdate.exe
- Size 19.9MB
- SHA256 a48cd0cdf81099014e4fba7634733a2b63055fb963ce1a1798b89f20189453f2
- MD5 80065c6fdf08d712beb8f4d79acbb9aa
- SHA1 033965d592e478c7420719d1e7efa48d06c6c3b3
- SHA512 c92f9f0af95fdd5d97c4d5b49862d2dd687e6467ca199fde7c1e6c6ea1a796020c5cc505a9192855b0fa73379ef0b9d2b0e56999b2271eed7806263b983a93f9
- SSDEEP 393216:DiYb4audHAoYydA++V1rvUvumuWwHVa0SkmBNqhqQHWvE2L:t45HAo32zL9mJwVbjEBvvhL
- TLSH T1572733927271547EC292887432B975A3FBC5296243BA80F377B185811A73DC09B7E1BF
- MD5 SHA1 SHA512 SSDEEP TLSH
A stealer written in Python and packaged with Pyinstaller
Contains code to disable Windows Defender
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
Family: blankgrabber
Blankgrabber is an infostealer written in Python and packaged with Pyinstaller.
Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
Executes dropped EXE
Loads dropped DLL
Modifies system executable filetype association
Adds Run key to start application
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
Drops desktop.ini file(s)
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
Checks system information in the registry
System information is often read in order to detect sandboxing environments.
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
2Change Default File Association
1Component Object Model Hijacking
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
2Change Default File Association
1Component Object Model Hijacking
1Defense Evasion
Modify Registry
5Subvert Trust Controls
1Install Root Certificate
1