Analysis
- max time kernel
149s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
09/08/2024, 01:33
General
- Target b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exe
- Size 506KB
- Sample240809-byz2aavajr
- SHA256 b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Detected Nirsoft tools 6 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 2 IoCs
Password recovery tool for various web browsers
- Loads dropped DLL 2 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 accounts 1 TTPs 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: MapViewOfSection 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exe"C:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exe"C:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exeC:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exe /stext "C:\Users\Admin\AppData\Local\Temp\kmogsctnqjulodhofcdxswdjjg"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exeC:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exe /stext "C:\Users\Admin\AppData\Local\Temp\uobztvepermqzjvsomyyvjxasmhyq"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exeC:\Users\Admin\AppData\Local\Temp\b81db352466d0a651374b1be399fc2f1b02b638c9a1786a2556d5d7919d2486e.exe /stext "C:\Users\Admin\AppData\Local\Temp\wigrtnxiazedbprefxksgosjttrhjgzms"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
kmogsctnqjulodhofcdxswdjjg
nsdA81B.tmp
nseA957.tmp
nseA957.tmp
nseA957.tmp
nsiA7EA.tmp
nsiA83B.tmp
nsiA83B.tmp
System.dll
nsoA85C.tmp
memory/440-598-0x0000000000400000-0x0000000000424000-memory.dmp
memory/440-601-0x0000000000400000-0x0000000000424000-memory.dmp
memory/440-597-0x0000000000400000-0x0000000000424000-memory.dmp
memory/440-595-0x0000000000400000-0x0000000000424000-memory.dmp
memory/1332-608-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1332-588-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1332-586-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1332-587-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2436-568-0x0000000074335000-0x0000000074336000-memory.dmp
memory/2436-567-0x00000000774D1000-0x00000000775F1000-memory.dmp
memory/2816-594-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2816-593-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2816-596-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2816-589-0x0000000000400000-0x0000000000462000-memory.dmp
memory/3336-576-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-619-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-585-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-583-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-582-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-581-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-579-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-578-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-577-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-571-0x00000000016D0000-0x00000000072BD000-memory.dmp
memory/3336-575-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-574-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-572-0x00000000774D1000-0x00000000775F1000-memory.dmp
memory/3336-573-0x00000000004A4000-0x00000000004A5000-memory.dmp
memory/3336-603-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-570-0x0000000077575000-0x0000000077576000-memory.dmp
memory/3336-609-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-569-0x0000000077558000-0x0000000077559000-memory.dmp
memory/3336-615-0x0000000038010000-0x0000000038029000-memory.dmp
memory/3336-614-0x0000000038010000-0x0000000038029000-memory.dmp
memory/3336-611-0x0000000038010000-0x0000000038029000-memory.dmp
memory/3336-616-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-617-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-584-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-618-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-620-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-621-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-622-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-623-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-624-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-625-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-627-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-628-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-629-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-630-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-631-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-634-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-635-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-636-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-637-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-638-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-639-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-640-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-641-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3336-642-0x0000000000470000-0x00000000016C4000-memory.dmp