Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20220721-en - resource tags
- submitted
04/08/2022, 08:53
General
- Target Halkbank,.pdf.exe
- Size 628KB
- Sample220804-ktap9schf6
- SHA256 ec8fddcd3c310a14168754ee1965cfb5c7d7c86360a146c1da4c042afb551dda
Malware Config
Signatures
- BluStealer
A Modular information stealer written in Visual Basic.
- StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty payload 1 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 behavior: EnumeratesProcesses 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank,.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank,.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Halkbank,.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank,.pdf.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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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
-
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1244-145-0x0000000000400000-0x0000000000421000-memory.dmp
memory/1244-144-0x0000000000400000-0x0000000000421000-memory.dmp
memory/1244-139-0x0000000000400000-0x0000000000421000-memory.dmp
memory/1244-137-0x0000000000400000-0x0000000000421000-memory.dmp
memory/3608-143-0x0000000000D60000-0x0000000000D7A000-memory.dmp
memory/4428-135-0x000000000B2A0000-0x000000000B306000-memory.dmp
memory/4428-134-0x000000000AF80000-0x000000000B01C000-memory.dmp
memory/4428-133-0x0000000004FE0000-0x0000000004FEA000-memory.dmp
memory/4428-130-0x00000000005A0000-0x0000000000644000-memory.dmp
memory/4428-132-0x0000000005030000-0x00000000050C2000-memory.dmp
memory/4428-131-0x00000000055E0000-0x0000000005B84000-memory.dmp