Analysis
- max time kernel
139s - max time network
71s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
05/10/2022, 10:24
General
- Target Halkbank_Ekstre_20221003_081552_734629.exe
- Size 856KB
- Sample221005-mfczksecbl
- SHA256 28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5
Malware Config
Extracted
-
blustealer
-
https://api.telegram.org/bot5374342837:AAHF-c1HAIvNCdF89VuEdNggsL2YBlpgkSE/sendMessage?chat_id=2133303215
Signatures
- BluStealer
A Modular information stealer written in Visual Basic.
- StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty payload 4 IoCs
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 18 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221003_081552_734629.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221003_081552_734629.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221003_081552_734629.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20221003_081552_734629.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe3⤵
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/840-63-0x0000000000400000-0x0000000000422000-memory.dmp
memory/840-82-0x0000000000400000-0x0000000000422000-memory.dmp
memory/840-81-0x0000000000400000-0x0000000000422000-memory.dmp
memory/840-68-0x0000000000400000-0x0000000000422000-memory.dmp
memory/840-65-0x0000000000400000-0x0000000000422000-memory.dmp
memory/840-60-0x0000000000400000-0x0000000000422000-memory.dmp
memory/840-61-0x0000000000400000-0x0000000000422000-memory.dmp
memory/1016-72-0x0000000000090000-0x00000000000AA000-memory.dmp
memory/1016-74-0x0000000000090000-0x00000000000AA000-memory.dmp
memory/1016-77-0x0000000000090000-0x00000000000AA000-memory.dmp
memory/1016-79-0x0000000000090000-0x00000000000AA000-memory.dmp
memory/1812-59-0x0000000004C30000-0x0000000004C58000-memory.dmp
memory/1812-58-0x0000000007E80000-0x0000000007EFE000-memory.dmp
memory/1812-57-0x0000000000410000-0x000000000041C000-memory.dmp
memory/1812-54-0x0000000001140000-0x0000000001216000-memory.dmp
memory/1812-56-0x0000000000DA0000-0x0000000000DBC000-memory.dmp
memory/1812-55-0x0000000076411000-0x0000000076413000-memory.dmp