Resubmissions
26/10/2026, 22:59
261026-2yjbmsg16s1017/10/2026, 20:34
261017-zcltjagg831017/10/2026, 19:48
261017-yjb28sby5k717/10/2026, 18:45
261017-xed6csbs7q1017/10/2026, 17:21
261017-vw5crsaz3x1017/10/2026, 16:11
261017-tm6nsshx5l1031/07/2025, 15:27
250731-sv8mpawthx10Analysis
- user interaction
yes - max time kernel
310s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
17/10/2026, 16:11
General
- Target NitroRansomware.exe
- Size 243KB
- Sample261017-tm6nsshx5l
- SHA256 3b35d3ff4960720eaf6af9cd674c776e9ef442b3bb448fd6c880837d8f987e86
Malware Config
Signatures
- Family: Nitro
A ransomware that demands Discord nitro gift codes to decrypt files.
- Renames multiple (104) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 8 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Drops desktop.ini file(s) 5 IoCs
- Looks up external IP address via web service 1 TTPs 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Sets desktop wallpaper using registry 2 TTPs 1 IoCs
- Queries system WMI classes for hardware identifiers 2 TTPs 1 IoCs
Uses WMI to read hardware serial numbers or the system UUID, commonly used to fingerprint the victim machine.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 44 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe"C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe"1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"cmd.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\Wbem\WMIC.exewmic csproduct get uuid3⤵
- Queries system WMI classes for hardware identifiers
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe"C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe"1⤵
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
NitroRansomware.exe.log
memory/1124-0-0x00000000004D0000-0x0000000000514000-memory.dmp
memory/1124-1-0x00000000053C0000-0x0000000005964000-memory.dmp
memory/1124-2-0x0000000004F00000-0x0000000004F92000-memory.dmp
memory/1124-3-0x0000000005220000-0x0000000005230000-memory.dmp
memory/1124-23-0x0000000005220000-0x0000000005230000-memory.dmp
memory/3488-4-0x0000000004F20000-0x0000000004F30000-memory.dmp
memory/3488-5-0x0000000004EA0000-0x0000000004EAA000-memory.dmp
memory/3488-6-0x0000000004F20000-0x0000000004F30000-memory.dmp
memory/3488-27-0x0000000004F20000-0x0000000004F30000-memory.dmp
memory/3488-31-0x0000000004F20000-0x0000000004F30000-memory.dmp