Analysis
- user interaction
yes - max time kernel
56s - max time network
14s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
27/02/2026, 14:19
General
- Target nitro generator.exe
- Size 2.7MB
- Sample260227-rm299sa14b
- SHA256 751736b637f142637a3efa5a4c8ba281c949e5054656554931514e6f03642bfa
Malware Config
Signatures
- Cinoshi
Cinoshi stealer is part of Cinoshi project Malware-as-a-Service (MaaS) written in C#.
- Cinoshi family
- Detect Cinoshi payload 3 IoCs
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- RedLine payload 1 IoCs
- Redline family
- Executes dropped EXE 7 IoCs
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 48 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- ConfuserEx .NET packer 1 IoCs
Detects ConfuserEx .NET packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 2 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 2 IoCs
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\nitro generator.exe"C:\Users\Admin\AppData\Local\Temp\nitro generator.exe"1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\@flamelos_easy.exe"C:\Users\Admin\AppData\Local\Temp\@flamelos_easy.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 8483⤵
- Program crash
-
-
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C:\Users\Admin\AppData\Local\Temp\faintxakers-420787300007.exe"C:\Users\Admin\AppData\Local\Temp\faintxakers-420787300007.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5272 -s 23763⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\block.exe"C:\Users\Admin\AppData\Local\Temp\block.exe"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1924 -ip 19241⤵
-
C:\Users\Admin\AppData\Local\Temp\block.exe"C:\Users\Admin\AppData\Local\Temp\block.exe"1⤵
- Executes dropped EXE
-
C:\Windows\explorer.exe"explorer.exe" "C:\Users\Admin\AppData\Local\Temp\block.exe"1⤵
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C:\Windows\system32\cmd.exe"cmd.exe" /c "@Start /HIGH "" "C:\Users\Admin\AppData\Local\Temp\block.exe""1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\block.exe"C:\Users\Admin\AppData\Local\Temp\block.exe"2⤵
- Executes dropped EXE
-
-
C:\Windows\system32\mshta.exe"mshta.exe" vbscript:Close(ExecuteGlobal("Call CreateObject(""WScript.Shell"").Run(""C:\Users\Admin\AppData\Local\Temp\block.exe"")"))1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\block.exe"C:\Users\Admin\AppData\Local\Temp\block.exe"2⤵
- Executes dropped EXE
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\block.exe"C:\Users\Admin\AppData\Local\Temp\block.exe"2⤵
- Executes dropped EXE
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-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5272 -ip 52721⤵
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
3Credentials In Files
2Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
block.exe.log
@flamelos_easy.exe
block.exe
faintxakers-420787300007.exe
memory/1708-183-0x000001457E770000-0x000001457EF1E000-memory.dmp
memory/1708-184-0x00000145643F0000-0x00000145643FC000-memory.dmp
memory/1856-165-0x000001366A0C0000-0x000001366A0CA000-memory.dmp
memory/1856-186-0x0000013668840000-0x0000013668FEE000-memory.dmp
memory/1856-158-0x000001364E310000-0x000001364E368000-memory.dmp
memory/1856-187-0x000001364E780000-0x000001364E78C000-memory.dmp
memory/1924-150-0x00000000021F0000-0x0000000002218000-memory.dmp
memory/1924-161-0x0000000000950000-0x0000000000A0F000-memory.dmp
memory/2224-188-0x0000000000A40000-0x00000000011EE000-memory.dmp
memory/3908-180-0x000001F695B70000-0x000001F69631E000-memory.dmp
memory/4636-176-0x0000025430BD0000-0x0000025430BDC000-memory.dmp
memory/4636-175-0x000002544AE30000-0x000002544B5DE000-memory.dmp
memory/5088-0-0x0000000000400000-0x00000000006B5000-memory.dmp
memory/5272-166-0x0000000006F40000-0x0000000006FB6000-memory.dmp
memory/5272-169-0x0000000006FC0000-0x0000000007026000-memory.dmp
memory/5272-164-0x0000000006BB0000-0x0000000006D72000-memory.dmp
memory/5272-163-0x00000000067C0000-0x00000000067D2000-memory.dmp
memory/5272-162-0x0000000006840000-0x00000000068D2000-memory.dmp
memory/5272-159-0x0000000005A30000-0x0000000005FD6000-memory.dmp
memory/5272-141-0x0000000000990000-0x00000000009FC000-memory.dmp
memory/5272-149-0x0000000005280000-0x000000000529A000-memory.dmp
memory/5560-172-0x0000024CE0740000-0x0000024CE0EEE000-memory.dmp
memory/5560-173-0x0000024CC7EF0000-0x0000024CC7EFC000-memory.dmp
memory/5720-182-0x00000200FD180000-0x00000200FD18C000-memory.dmp
memory/5720-181-0x00000200FD860000-0x00000200FE00E000-memory.dmp
memory/6088-178-0x0000000001600000-0x0000000001DAE000-memory.dmp