Analysis
- max time kernel
136s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
26/08/2024, 15:50
General
- Target IMG_0000053Legal_warning_Invoices.exe
- Size 743KB
- Sample240826-taaetstbpp
- SHA256 7fb76cbc560551518f1ed1c77b4e930b6faff77f63815f0090712eb644d87fe0
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 7 IoCs
- Drops file in System32 directory 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\IMG_0000053Legal_warning_Invoices.exe"C:\Users\Admin\AppData\Local\Temp\IMG_0000053Legal_warning_Invoices.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\IMG_0000053Legal_warning_Invoices.exe"C:\Users\Admin\AppData\Local\Temp\IMG_0000053Legal_warning_Invoices.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 2203⤵
- Program crash
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-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1152 -ip 11521⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
LangDLL.dll
System.dll
memory/1152-35-0x0000000001660000-0x0000000003763000-memory.dmp
memory/1152-40-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1152-39-0x0000000001660000-0x0000000003763000-memory.dmp
memory/1152-38-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1152-36-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1152-34-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4024-30-0x0000000004C20000-0x0000000006D23000-memory.dmp
memory/4024-32-0x0000000077A51000-0x0000000077B71000-memory.dmp
memory/4024-37-0x0000000004C20000-0x0000000006D23000-memory.dmp
memory/4024-33-0x00000000746A5000-0x00000000746A6000-memory.dmp
memory/4024-31-0x0000000077A51000-0x0000000077B71000-memory.dmp
memory/4024-29-0x0000000004C20000-0x0000000006D23000-memory.dmp