nitro | e854a9a2a3055687b6b404c41a548e56747d58318725db61618852ecea0a1e6c

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25-10-2024 07:07

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General

Target

NitroRansomware.exe
Size

61KB
MD5

c4b8324b5144e4c5aaf54fd2edf7ff35
SHA1

a5ea5afe5c05408a7f9f3a06ab318048194f978e
SHA256

e854a9a2a3055687b6b404c41a548e56747d58318725db61618852ecea0a1e6c
SHA512

06244aee8ac78ca77f0185490054e5b19cbb0e50cb093e0cfcb940440d69d57951b5f981a1042aa8ea81e9dc48f8b8c71b58cd5441fbcb37a68ee8fc932528cd
SSDEEP

768:tKsMqCXfVcWlzM9ZkiANIUsLYLDwUzc80gmq3oP/oD7:tKse1M9ZkiAPPr/0O8/oP

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
Renames multiple (100) 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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\NitroRansomware.exe\""	NitroRansomware.exe

Drops desktop.ini file(s) 3 IoCs

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

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

Web Service

T1102

flow	ioc
6	discord.com
7	discord.com
8	discord.com
9	discord.com
10	discord.com
11	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
4	api.ipify.org
5	api.ipify.org

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	NitroRansomware.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	NitroRansomware.exe

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.

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	WMIC.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2328	NitroRansomware.exe
2328	NitroRansomware.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	NitroRansomware.exe
Token: SeIncreaseQuotaPrivilege	2556	WMIC.exe
Token: SeSecurityPrivilege	2556	WMIC.exe
Token: SeTakeOwnershipPrivilege	2556	WMIC.exe
Token: SeLoadDriverPrivilege	2556	WMIC.exe
Token: SeSystemProfilePrivilege	2556	WMIC.exe
Token: SeSystemtimePrivilege	2556	WMIC.exe
Token: SeProfSingleProcessPrivilege	2556	WMIC.exe
Token: SeIncBasePriorityPrivilege	2556	WMIC.exe
Token: SeCreatePagefilePrivilege	2556	WMIC.exe
Token: SeBackupPrivilege	2556	WMIC.exe
Token: SeRestorePrivilege	2556	WMIC.exe
Token: SeShutdownPrivilege	2556	WMIC.exe
Token: SeDebugPrivilege	2556	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2556	WMIC.exe
Token: SeRemoteShutdownPrivilege	2556	WMIC.exe
Token: SeUndockPrivilege	2556	WMIC.exe
Token: SeManageVolumePrivilege	2556	WMIC.exe
Token: 33	2556	WMIC.exe
Token: 34	2556	WMIC.exe
Token: 35	2556	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2556	WMIC.exe
Token: SeSecurityPrivilege	2556	WMIC.exe
Token: SeTakeOwnershipPrivilege	2556	WMIC.exe
Token: SeLoadDriverPrivilege	2556	WMIC.exe
Token: SeSystemProfilePrivilege	2556	WMIC.exe
Token: SeSystemtimePrivilege	2556	WMIC.exe
Token: SeProfSingleProcessPrivilege	2556	WMIC.exe
Token: SeIncBasePriorityPrivilege	2556	WMIC.exe
Token: SeCreatePagefilePrivilege	2556	WMIC.exe
Token: SeBackupPrivilege	2556	WMIC.exe
Token: SeRestorePrivilege	2556	WMIC.exe
Token: SeShutdownPrivilege	2556	WMIC.exe
Token: SeDebugPrivilege	2556	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2556	WMIC.exe
Token: SeRemoteShutdownPrivilege	2556	WMIC.exe
Token: SeUndockPrivilege	2556	WMIC.exe
Token: SeManageVolumePrivilege	2556	WMIC.exe
Token: 33	2556	WMIC.exe
Token: 34	2556	WMIC.exe
Token: 35	2556	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2188	2328	NitroRansomware.exe	31
PID 2328 wrote to memory of 2188	2328	NitroRansomware.exe	31
PID 2328 wrote to memory of 2188	2328	NitroRansomware.exe	31
PID 2328 wrote to memory of 2188	2328	NitroRansomware.exe	31
PID 2188 wrote to memory of 2556	2188	cmd.exe	33
PID 2188 wrote to memory of 2556	2188	cmd.exe	33
PID 2188 wrote to memory of 2556	2188	cmd.exe	33
PID 2188 wrote to memory of 2556	2188	cmd.exe	33

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:2328
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/2328-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/2328-1-0x0000000001160000-0x0000000001176000-memory.dmp

Filesize
88KB

Download
memory/2328-2-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-8-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/2328-12-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-108-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-109-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download