Analysis
- max time kernel
93s - max time network
94s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
16/07/2024, 01:25
General
- Target AWB_6434907- JULY 31 2024 - SkyWin.exe
- Size 723KB
- Sample240716-btb4na1fjg
- SHA256 08666ef4278f5e77d441949a6069b712fd4908fc75df489ed9289daa5ff3cf5e
Malware Config
Signatures
- Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Modifies system executable filetype association 2 TTPs 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Program Files directory 64 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 11 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 23 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\AWB_6434907- JULY 31 2024 - SkyWin.exe"C:\Users\Admin\AppData\Local\Temp\AWB_6434907- JULY 31 2024 - SkyWin.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\AWB_6434907- JULY 31 2024 - SkyWin.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QBloUDNxsti.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QBloUDNxsti" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA5B.tmp"2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\AWB_6434907- JULY 31 2024 - SkyWin.exe"C:\Users\Admin\AppData\Local\Temp\AWB_6434907- JULY 31 2024 - SkyWin.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\AWB_6434907- JULY 31 2024 - SkyWin.exe"C:\Users\Admin\AppData\Local\Temp\AWB_6434907- JULY 31 2024 - SkyWin.exe"2⤵
- Checks computer location settings
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
-
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
AWB_6434907- JULY 31 2024 - SkyWin.exe
__PSScriptPolicyTest_sxsnjvh5.gss.ps1
tmpA5B.tmp
QBLOUD~1.EXE
svchost.com
memory/1732-83-0x0000000007360000-0x00000000079DA000-memory.dmp
memory/1732-85-0x0000000006D90000-0x0000000006D9A000-memory.dmp
memory/1732-84-0x0000000006D20000-0x0000000006D3A000-memory.dmp
memory/1732-97-0x0000000006FA0000-0x0000000007036000-memory.dmp
memory/1732-73-0x0000000006BF0000-0x0000000006C93000-memory.dmp
memory/1732-71-0x0000000006BC0000-0x0000000006BDE000-memory.dmp
memory/1732-60-0x0000000006B80000-0x0000000006BB2000-memory.dmp
memory/1732-101-0x0000000006F20000-0x0000000006F31000-memory.dmp
memory/1732-61-0x00000000709D0000-0x0000000070A1C000-memory.dmp
memory/1732-102-0x0000000006F50000-0x0000000006F5E000-memory.dmp
memory/1732-156-0x0000000074470000-0x0000000074C20000-memory.dmp
memory/1732-23-0x0000000074470000-0x0000000074C20000-memory.dmp
memory/1732-22-0x0000000074470000-0x0000000074C20000-memory.dmp
memory/2344-16-0x0000000074470000-0x0000000074C20000-memory.dmp
memory/2344-15-0x0000000004ED0000-0x00000000054F8000-memory.dmp
memory/2344-158-0x0000000074470000-0x0000000074C20000-memory.dmp
memory/2344-109-0x00000000070C0000-0x00000000070C8000-memory.dmp
memory/2344-107-0x00000000070E0000-0x00000000070FA000-memory.dmp
memory/2344-19-0x0000000004BB0000-0x0000000004BD2000-memory.dmp
memory/2344-21-0x0000000004DF0000-0x0000000004E56000-memory.dmp
memory/2344-57-0x0000000005AF0000-0x0000000005B3C000-memory.dmp
memory/2344-55-0x0000000005960000-0x000000000597E000-memory.dmp
memory/2344-20-0x0000000004C50000-0x0000000004CB6000-memory.dmp
memory/2344-17-0x0000000074470000-0x0000000074C20000-memory.dmp
memory/2344-103-0x0000000006FE0000-0x0000000006FF4000-memory.dmp
memory/2344-72-0x00000000709D0000-0x0000000070A1C000-memory.dmp
memory/2344-42-0x0000000005500000-0x0000000005854000-memory.dmp
memory/2344-14-0x0000000000990000-0x00000000009C6000-memory.dmp
memory/3952-43-0x0000000000400000-0x000000000041B000-memory.dmp
memory/3952-44-0x0000000000400000-0x000000000041B000-memory.dmp
memory/4080-47-0x0000000074470000-0x0000000074C20000-memory.dmp
memory/4080-6-0x0000000006660000-0x000000000667A000-memory.dmp
memory/4080-5-0x0000000074470000-0x0000000074C20000-memory.dmp
memory/4080-0-0x000000007447E000-0x000000007447F000-memory.dmp
memory/4080-9-0x0000000006C30000-0x0000000006CCC000-memory.dmp
memory/4080-7-0x0000000006690000-0x000000000669E000-memory.dmp
memory/4080-4-0x0000000005510000-0x000000000551A000-memory.dmp
memory/4080-3-0x0000000005350000-0x00000000053E2000-memory.dmp
memory/4080-8-0x00000000066F0000-0x000000000677E000-memory.dmp
memory/4080-2-0x00000000059B0000-0x0000000005F54000-memory.dmp
memory/4080-1-0x00000000008C0000-0x000000000097C000-memory.dmp