Analysis
- max time kernel
55s - max time network
50s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
- submitted
29/04/2024, 19:53
General
- Target Client.exe
- Size 320KB
- Sample240429-yl22fabc24
- SHA256 2977e0b05594746088bff548f75d614c92c1f0ba9ecc321f5350388271deec4c
Malware Config
Signatures
- StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty payload 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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) 4 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory 11 IoCs
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 26 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Client.exe"C:\Users\Admin\AppData\Local\Temp\Client.exe"1⤵
- Accesses Microsoft Outlook profiles
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 660 -s 12042⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 660 -ip 6601⤵
-
C:\Windows\system32\mspaint.exe"C:\Windows\system32\mspaint.exe" "C:\Users\Admin\Desktop\InitializeNew.png" /ForceBootstrapPaint3D1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s DsSvc1⤵
- Drops file in System32 directory
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v15
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Downloads
Process.txt
memory/660-121-0x00000000052B0000-0x00000000052C0000-memory.dmp
memory/660-156-0x0000000074800000-0x0000000074FB0000-memory.dmp
memory/660-32-0x00000000064A0000-0x0000000006532000-memory.dmp
memory/660-33-0x0000000006AF0000-0x0000000007094000-memory.dmp
memory/660-35-0x0000000006960000-0x00000000069C6000-memory.dmp
memory/660-1-0x0000000074800000-0x0000000074FB0000-memory.dmp
memory/660-120-0x0000000074800000-0x0000000074FB0000-memory.dmp
memory/660-0-0x00000000009F0000-0x0000000000A46000-memory.dmp
memory/660-2-0x00000000052B0000-0x00000000052C0000-memory.dmp
memory/4388-161-0x0000024823C60000-0x0000024823C70000-memory.dmp
memory/4388-168-0x000002482BF40000-0x000002482BF41000-memory.dmp
memory/4388-170-0x000002482BFC0000-0x000002482BFC1000-memory.dmp
memory/4388-172-0x000002482BFC0000-0x000002482BFC1000-memory.dmp
memory/4388-173-0x000002482C050000-0x000002482C051000-memory.dmp
memory/4388-174-0x000002482C050000-0x000002482C051000-memory.dmp
memory/4388-175-0x000002482C060000-0x000002482C061000-memory.dmp
memory/4388-176-0x000002482C060000-0x000002482C061000-memory.dmp