Analysis
- max time kernel
145s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
30/07/2026, 00:58
Behavioral task
behavioral1
Sample
Stub.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
Stub.exe
Resource
win11ltsc2024-20260710-en
General
- Target Stub.exe
- Size 421KB
- Sample260730-bbrrdswdmb
- SHA256 184d8005b6ad5eee22a0499fdabb82c5ad46a6bbe92e2fad605e584be60d7a55
- MD5 428698993110dcda4be2afd0ad8c0326
- SHA1 ce12e4e4af783e64ef9b06045f12ce162fb6f775
- SHA512 ba6785aa9ad38833b00319268357c99a8d7c4c2a2ad2820805e204fb6dea8b9dc4aa87959f9f9098f2beef1e6ed8687e62818dc16c89cce96b29e15b30421452
- SSDEEP 6144:q4Uht2Fk3KNPyf37e09Nrj2MQq7J7Z7+mcsDz/A7JsJw7v1Ygp40VKYswYY2e5dY:q4Ur2uaNPyf37NKx9w3tWCOEKQJ
- TLSH T1E494B30173F98618F2FF3F30A8B616658A76BC56A93DC71E1A4054AE0D72B54CDA0B73
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Family: StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty payload 1 IoCs
resource yara_rule behavioral1/memory/2488-0-0x0000000000420000-0x0000000000490000-memory.dmp family_stormkitty - Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Stub.exe Key opened \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Stub.exe Key opened \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Stub.exe - Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops desktop.ini file(s) 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\EPSYDAFZ\FileGrabber\Documents\desktop.ini Stub.exe File created C:\Users\Admin\AppData\Roaming\EPSYDAFZ\FileGrabber\Pictures\desktop.ini Stub.exe - Looks up external IP address via web service 1 TTPs 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 15 api.ipify.org 16 api.ipify.org - Program crash 1 IoCs
pid pid_target Process procid_target 4232 2488 WerFault.exe 84 - System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Stub.exe - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 Stub.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier Stub.exe - Suspicious behavior: EnumeratesProcesses 27 IoCs
pid Process 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe 2488 Stub.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2488 Stub.exe - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Stub.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Stub.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Stub.exe"C:\Users\Admin\AppData\Local\Temp\Stub.exe"1⤵
- Accesses Microsoft Outlook profiles
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2488 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2488 -s 25362⤵
- Program crash
PID:4232
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2488 -ip 24881⤵PID:4772
Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\EPSYDAFZ\Process.txt
- Size 4KB
- SHA256 c5be8ffb8703d1fb67a93f8d1d2bd1a0586a3c16ab4d0f52fb8a2a3b6b4b3f84
- MD5 ac4ed1af2214ee32a1e020d06530dbd3
- SHA1 332178ec66c2c49eff5e323324f3806790625d5b
- SHA512 ae543793068d9067775d64611936f8ca8760306519f0c6e69530552e209db00ab792c26a563ca33625f69d3f2658d868b60010f3eb10438d72e3031e578f54cb
- SSDEEP 24:tepCJVOC0FepCZUubc3Y1nCDeCepCWepCQcj+VEx+23OCCCVFCCOepaQCepDUubj:9Vobcu09Mo/23Zb1ui2vcoxMQFM2M5T
- TLSH T133914B60AEA2F850CA578C9451074293B363B94EA57C5CEC26B3D37DF4844BD8E71A7C
- MD5 SHA1 SHA512 SSDEEP TLSH