Analysis
- max time kernel
146s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
09/12/2024, 07:30
General
- Target REQUEST FOR QUOATION AND PRICES 01306-24_pdf.exe
- Size 1.1MB
- Sample241209-jbt6hsvrel
- SHA256 ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e
Malware Config
Signatures
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Disables Task Manager via registry modification
- Loads dropped DLL 2 IoCs
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- 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
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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 NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\REQUEST FOR QUOATION AND PRICES 01306-24_pdf.exe"C:\Users\Admin\AppData\Local\Temp\REQUEST FOR QUOATION AND PRICES 01306-24_pdf.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\REQUEST FOR QUOATION AND PRICES 01306-24_pdf.exe"C:\Users\Admin\AppData\Local\Temp\REQUEST FOR QUOATION AND PRICES 01306-24_pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/2880-38-0x00000000353B0000-0x0000000035954000-memory.dmp
memory/2880-36-0x0000000077AA1000-0x0000000077BC1000-memory.dmp
memory/2880-44-0x00000000361E0000-0x00000000361EA000-memory.dmp
memory/2880-43-0x0000000035F50000-0x0000000036112000-memory.dmp
memory/2880-19-0x0000000001720000-0x00000000026B5000-memory.dmp
memory/2880-20-0x0000000077B28000-0x0000000077B29000-memory.dmp
memory/2880-21-0x0000000077B45000-0x0000000077B46000-memory.dmp
memory/2880-34-0x0000000001720000-0x00000000026B5000-memory.dmp
memory/2880-41-0x0000000035DF0000-0x0000000035E40000-memory.dmp
memory/2880-37-0x00000000004C0000-0x00000000004DE000-memory.dmp
memory/2880-35-0x00000000004C0000-0x0000000001714000-memory.dmp
memory/2880-40-0x0000000035D50000-0x0000000035DE2000-memory.dmp
memory/2880-39-0x0000000032FF0000-0x000000003308C000-memory.dmp
memory/3528-15-0x00000000032B0000-0x0000000004245000-memory.dmp
memory/3528-16-0x0000000077AA1000-0x0000000077BC1000-memory.dmp
memory/3528-18-0x00000000032B0000-0x0000000004245000-memory.dmp
memory/3528-17-0x0000000010004000-0x0000000010005000-memory.dmp