nitro | e514472937edbb37aa30e4ddcf357c121481c9e77ea8bd50e7abd256b124b9fd

Analysis

max time kernel
80s
max time network
149s
platform
windows11-21h2_x64
resource
win11-20250610-en
resource tags

arch:x64arch:x86image:win11-20250610-enlocale:en-usos:windows11-21h2-x64system
submitted
17/06/2025, 09:23

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General

Target
NitroRansomware.exe
Size 243KB
Sample250617-lctmgsyscz
SHA256 e514472937edbb37aa30e4ddcf357c121481c9e77ea8bd50e7abd256b124b9fd
MD5 c89242f88e53bee5654e3cc4c95a8a19
SHA1 65e163bd4ae01ecfa049461eb6be2aa59a2e936a
SHA512 15241354ad037deae7607cb129261ee2f6f0427f935b82a526e7720c0e0ba90e1fed916142c1fb7faff6441eb80af5f8cf1b7024e245612c9f60d1bb721c0d79
SSDEEP 6144:YzLmcTglTud8+5V5Zt7mf+SULp+KTrzWpAR6xMlPf:YnmcU1u++5xtaf+NjTGARUM9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nitro discovery persistence ransomware spyware stealer

Malware Config

Signatures

Nitro
A ransomware that demands Discord nitro gift codes to decrypt files.
ransomware nitro
Nitro family
nitro
Renames multiple (82) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\NitroRansomware.exe\""	NitroRansomware.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Documents\desktop.ini	NitroRansomware.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	NitroRansomware.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	NitroRansomware.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	NitroRansomware.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	NitroRansomware.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 6 IoCs

Web Service

T1102

flow	ioc
3	discord.com
4	discord.com
5	discord.com
6	discord.com
7	discord.com
9	discord.com

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	api.ipify.org
2	api.ipify.org

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	NitroRansomware.exe

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NitroRansomware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NitroRansomware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WMIC.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4832	NitroRansomware.exe
4832	NitroRansomware.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	4832	NitroRansomware.exe
Token: SeIncreaseQuotaPrivilege	5132	WMIC.exe
Token: SeSecurityPrivilege	5132	WMIC.exe
Token: SeTakeOwnershipPrivilege	5132	WMIC.exe
Token: SeLoadDriverPrivilege	5132	WMIC.exe
Token: SeSystemProfilePrivilege	5132	WMIC.exe
Token: SeSystemtimePrivilege	5132	WMIC.exe
Token: SeProfSingleProcessPrivilege	5132	WMIC.exe
Token: SeIncBasePriorityPrivilege	5132	WMIC.exe
Token: SeCreatePagefilePrivilege	5132	WMIC.exe
Token: SeBackupPrivilege	5132	WMIC.exe
Token: SeRestorePrivilege	5132	WMIC.exe
Token: SeShutdownPrivilege	5132	WMIC.exe
Token: SeDebugPrivilege	5132	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5132	WMIC.exe
Token: SeRemoteShutdownPrivilege	5132	WMIC.exe
Token: SeUndockPrivilege	5132	WMIC.exe
Token: SeManageVolumePrivilege	5132	WMIC.exe
Token: 33	5132	WMIC.exe
Token: 34	5132	WMIC.exe
Token: 35	5132	WMIC.exe
Token: 36	5132	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5132	WMIC.exe
Token: SeSecurityPrivilege	5132	WMIC.exe
Token: SeTakeOwnershipPrivilege	5132	WMIC.exe
Token: SeLoadDriverPrivilege	5132	WMIC.exe
Token: SeSystemProfilePrivilege	5132	WMIC.exe
Token: SeSystemtimePrivilege	5132	WMIC.exe
Token: SeProfSingleProcessPrivilege	5132	WMIC.exe
Token: SeIncBasePriorityPrivilege	5132	WMIC.exe
Token: SeCreatePagefilePrivilege	5132	WMIC.exe
Token: SeBackupPrivilege	5132	WMIC.exe
Token: SeRestorePrivilege	5132	WMIC.exe
Token: SeShutdownPrivilege	5132	WMIC.exe
Token: SeDebugPrivilege	5132	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5132	WMIC.exe
Token: SeRemoteShutdownPrivilege	5132	WMIC.exe
Token: SeUndockPrivilege	5132	WMIC.exe
Token: SeManageVolumePrivilege	5132	WMIC.exe
Token: 33	5132	WMIC.exe
Token: 34	5132	WMIC.exe
Token: 35	5132	WMIC.exe
Token: 36	5132	WMIC.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 2276	4832	NitroRansomware.exe	83
PID 4832 wrote to memory of 2276	4832	NitroRansomware.exe	83
PID 4832 wrote to memory of 2276	4832	NitroRansomware.exe	83
PID 2684 wrote to memory of 2384	2684	cmd.exe	85
PID 2684 wrote to memory of 2384	2684	cmd.exe	85
PID 2684 wrote to memory of 2384	2684	cmd.exe	85
PID 2276 wrote to memory of 5132	2276	cmd.exe	86
PID 2276 wrote to memory of 5132	2276	cmd.exe	86
PID 2276 wrote to memory of 5132	2276	cmd.exe	86

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
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2276
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:5132

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe
  C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2384