nitro | 7211e4c17bfcf8eb7630a4f48c271a03c11ded335a390ea2e0573a94b3627dec

Analysis

max time kernel
76s
max time network
75s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2023 10:10

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General

Target

NitroRansomware.exe
Size

1.0MB
MD5

16a6c727c21914b28956ea6b9df5399b
SHA1

d22d2e73df6539b4cdf7a03190e945db0463ef7b
SHA256

7211e4c17bfcf8eb7630a4f48c271a03c11ded335a390ea2e0573a94b3627dec
SHA512

88fee2511baa2bafceda30578056abda5a920a1de0ec61704aa86c77ed416826a2c62acc4acaa3c634c0ab305a74559bf00e92c67c585cf95c4329a30e7cb3fc
SSDEEP

24576:UOYGGjodngwtlaHxN8KUWVe6tw2wvKhLnLi:UOYG2odngwwHv5VbtHw

Score

10^/10

nitro evasion persistence ransomware trojan

Malware Config

Signatures

Nitro
A ransomware that demands Discord nitro gift codes to decrypt files.
ransomware nitro

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	NitroRansomware.exe

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\ExportClose.crw.lmao	NitroRansomware.exe
File created	C:\Users\Admin\Pictures\OpenCompare.raw.lmao	NitroRansomware.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4025927695-1301755775-2607443251-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\NitroRansomware.exe\""	NitroRansomware.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	NitroRansomware.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	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\Camera Roll\desktop.ini	NitroRansomware.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	NitroRansomware.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	NitroRansomware.exe

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
31	api.ipify.org
30	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-1-5-21-4025927695-1301755775-2607443251-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	NitroRansomware.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2960	1152	WerFault.exe	81
1040	1152	WerFault.exe	81

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1152	NitroRansomware.exe
1152	NitroRansomware.exe
1152	NitroRansomware.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	1152	NitroRansomware.exe
Token: SeIncreaseQuotaPrivilege	2984	wmic.exe
Token: SeSecurityPrivilege	2984	wmic.exe
Token: SeTakeOwnershipPrivilege	2984	wmic.exe
Token: SeLoadDriverPrivilege	2984	wmic.exe
Token: SeSystemProfilePrivilege	2984	wmic.exe
Token: SeSystemtimePrivilege	2984	wmic.exe
Token: SeProfSingleProcessPrivilege	2984	wmic.exe
Token: SeIncBasePriorityPrivilege	2984	wmic.exe
Token: SeCreatePagefilePrivilege	2984	wmic.exe
Token: SeBackupPrivilege	2984	wmic.exe
Token: SeRestorePrivilege	2984	wmic.exe
Token: SeShutdownPrivilege	2984	wmic.exe
Token: SeDebugPrivilege	2984	wmic.exe
Token: SeSystemEnvironmentPrivilege	2984	wmic.exe
Token: SeRemoteShutdownPrivilege	2984	wmic.exe
Token: SeUndockPrivilege	2984	wmic.exe
Token: SeManageVolumePrivilege	2984	wmic.exe
Token: 33	2984	wmic.exe
Token: 34	2984	wmic.exe
Token: 35	2984	wmic.exe
Token: 36	2984	wmic.exe
Token: SeIncreaseQuotaPrivilege	2984	wmic.exe
Token: SeSecurityPrivilege	2984	wmic.exe
Token: SeTakeOwnershipPrivilege	2984	wmic.exe
Token: SeLoadDriverPrivilege	2984	wmic.exe
Token: SeSystemProfilePrivilege	2984	wmic.exe
Token: SeSystemtimePrivilege	2984	wmic.exe
Token: SeProfSingleProcessPrivilege	2984	wmic.exe
Token: SeIncBasePriorityPrivilege	2984	wmic.exe
Token: SeCreatePagefilePrivilege	2984	wmic.exe
Token: SeBackupPrivilege	2984	wmic.exe
Token: SeRestorePrivilege	2984	wmic.exe
Token: SeShutdownPrivilege	2984	wmic.exe
Token: SeDebugPrivilege	2984	wmic.exe
Token: SeSystemEnvironmentPrivilege	2984	wmic.exe
Token: SeRemoteShutdownPrivilege	2984	wmic.exe
Token: SeUndockPrivilege	2984	wmic.exe
Token: SeManageVolumePrivilege	2984	wmic.exe
Token: 33	2984	wmic.exe
Token: 34	2984	wmic.exe
Token: 35	2984	wmic.exe
Token: 36	2984	wmic.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 2984	1152	NitroRansomware.exe	87
PID 1152 wrote to memory of 2984	1152	NitroRansomware.exe	87
PID 1152 wrote to memory of 2984	1152	NitroRansomware.exe	87

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	NitroRansomware.exe

C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe
"C:\Users\Admin\AppData\Local\Temp\NitroRansomware.exe"
1⤵
- UAC bypass
- Modifies extensions of user files
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1152
- C:\Windows\SysWOW64\Wbem\wmic.exe
  "wmic" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 2284
  2⤵
  - Program crash
  PID:2960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 2284
  2⤵
  - Program crash
  PID:1040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1152 -ip 1152
1⤵
PID:5052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1152 -ip 1152
1⤵
PID:1856

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

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Downloads

memory/1152-133-0x0000000000770000-0x000000000087A000-memory.dmp

Filesize
1.0MB

Download
memory/1152-134-0x0000000005810000-0x0000000005DB4000-memory.dmp

Filesize
5.6MB

Download
memory/1152-135-0x0000000005260000-0x00000000052F2000-memory.dmp

Filesize
584KB

Download
memory/1152-136-0x0000000005400000-0x0000000005466000-memory.dmp

Filesize
408KB

Download
memory/1152-137-0x0000000005250000-0x0000000005260000-memory.dmp

Filesize
64KB

Download
memory/1152-144-0x0000000005250000-0x0000000005260000-memory.dmp

Filesize
64KB

Download
memory/1152-234-0x0000000000D20000-0x0000000000D2A000-memory.dmp

Filesize
40KB

Download