nitro | 2bb0bec19264d1be7d41a921e6312b43a12dbb6e32b21eefcd388b3ad100aaa4

Analysis

max time kernel
81s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
03-07-2023 01:22

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General

Target

NitroRansomware.exe
Size

1.3MB
MD5

3045686ac229ca8ea1c30217bcc4910e
SHA1

0120e0dc05331a99ba6d937439b97e7ee68fcfc3
SHA256

2bb0bec19264d1be7d41a921e6312b43a12dbb6e32b21eefcd388b3ad100aaa4
SHA512

927f6094353d8bce48f280f4505ceb597c63245bd96459493565196a56212b7e747436cbfd92851116e42101756cb3d313e0b67e38a042b50e84842e4a66b732
SSDEEP

24576:YWYGGwodngwtlaHxN8KUWVe6tw2wvKhLnekqjVnlqud+/2P+A+q:YWYGjodngwwHv5VbtHw1kqXfd+/9A

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

Disables Task Manager via registry modification
evasion

Modifies extensions of user files 5 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\DebugBackup.png.lmao	NitroRansomware.exe
File created	C:\Users\Admin\Pictures\ReceiveSkip.crw.lmao	NitroRansomware.exe
File created	C:\Users\Admin\Pictures\RenameSend.png.lmao	NitroRansomware.exe
File created	C:\Users\Admin\Pictures\ResizeSet.raw.lmao	NitroRansomware.exe
File created	C:\Users\Admin\Pictures\UndoTrace.png.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-1-5-21-2890635272-812199704-3564780063-1000\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\Desktop\desktop.ini	NitroRansomware.exe
File opened for modification	C:\Users\Admin\Documents\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
34	api.ipify.org
35	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-1-5-21-2890635272-812199704-3564780063-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	NitroRansomware.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5000	4208	WerFault.exe	83
2644	4208	WerFault.exe	83

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
2584	tasklist.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4208	NitroRansomware.exe
4208	NitroRansomware.exe

Suspicious use of AdjustPrivilegeToken 44 IoCs

description	pid	Process
Token: SeDebugPrivilege	4208	NitroRansomware.exe
Token: SeIncreaseQuotaPrivilege	3900	wmic.exe
Token: SeSecurityPrivilege	3900	wmic.exe
Token: SeTakeOwnershipPrivilege	3900	wmic.exe
Token: SeLoadDriverPrivilege	3900	wmic.exe
Token: SeSystemProfilePrivilege	3900	wmic.exe
Token: SeSystemtimePrivilege	3900	wmic.exe
Token: SeProfSingleProcessPrivilege	3900	wmic.exe
Token: SeIncBasePriorityPrivilege	3900	wmic.exe
Token: SeCreatePagefilePrivilege	3900	wmic.exe
Token: SeBackupPrivilege	3900	wmic.exe
Token: SeRestorePrivilege	3900	wmic.exe
Token: SeShutdownPrivilege	3900	wmic.exe
Token: SeDebugPrivilege	3900	wmic.exe
Token: SeSystemEnvironmentPrivilege	3900	wmic.exe
Token: SeRemoteShutdownPrivilege	3900	wmic.exe
Token: SeUndockPrivilege	3900	wmic.exe
Token: SeManageVolumePrivilege	3900	wmic.exe
Token: 33	3900	wmic.exe
Token: 34	3900	wmic.exe
Token: 35	3900	wmic.exe
Token: 36	3900	wmic.exe
Token: SeIncreaseQuotaPrivilege	3900	wmic.exe
Token: SeSecurityPrivilege	3900	wmic.exe
Token: SeTakeOwnershipPrivilege	3900	wmic.exe
Token: SeLoadDriverPrivilege	3900	wmic.exe
Token: SeSystemProfilePrivilege	3900	wmic.exe
Token: SeSystemtimePrivilege	3900	wmic.exe
Token: SeProfSingleProcessPrivilege	3900	wmic.exe
Token: SeIncBasePriorityPrivilege	3900	wmic.exe
Token: SeCreatePagefilePrivilege	3900	wmic.exe
Token: SeBackupPrivilege	3900	wmic.exe
Token: SeRestorePrivilege	3900	wmic.exe
Token: SeShutdownPrivilege	3900	wmic.exe
Token: SeDebugPrivilege	3900	wmic.exe
Token: SeSystemEnvironmentPrivilege	3900	wmic.exe
Token: SeRemoteShutdownPrivilege	3900	wmic.exe
Token: SeUndockPrivilege	3900	wmic.exe
Token: SeManageVolumePrivilege	3900	wmic.exe
Token: 33	3900	wmic.exe
Token: 34	3900	wmic.exe
Token: 35	3900	wmic.exe
Token: 36	3900	wmic.exe
Token: SeDebugPrivilege	2584	tasklist.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4208 wrote to memory of 3900	4208	NitroRansomware.exe	88
PID 4208 wrote to memory of 3900	4208	NitroRansomware.exe	88
PID 4208 wrote to memory of 3900	4208	NitroRansomware.exe	88
PID 4208 wrote to memory of 2584	4208	NitroRansomware.exe	95
PID 4208 wrote to memory of 2584	4208	NitroRansomware.exe	95
PID 4208 wrote to memory of 2584	4208	NitroRansomware.exe	95

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:4208
- C:\Windows\SysWOW64\Wbem\wmic.exe
  "wmic" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3900
- C:\Windows\SysWOW64\tasklist.exe
  "tasklist"
  2⤵
  - Enumerates processes with tasklist
  - Suspicious use of AdjustPrivilegeToken
  PID:2584
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4208 -s 2432
  2⤵
  - Program crash
  PID:5000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4208 -s 2432
  2⤵
  - Program crash
  PID:2644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4208 -ip 4208
1⤵
PID:952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4208 -ip 4208
1⤵
PID:3856

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

Process Discovery

T1057

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/4208-133-0x0000000000B80000-0x0000000000CCE000-memory.dmp

Filesize
1.3MB

Download
memory/4208-134-0x0000000005B60000-0x0000000006104000-memory.dmp

Filesize
5.6MB

Download
memory/4208-135-0x00000000055B0000-0x0000000005642000-memory.dmp

Filesize
584KB

Download
memory/4208-136-0x0000000005530000-0x0000000005596000-memory.dmp

Filesize
408KB

Download
memory/4208-137-0x00000000055A0000-0x00000000055B0000-memory.dmp

Filesize
64KB

Download
memory/4208-140-0x00000000072C0000-0x0000000007336000-memory.dmp

Filesize
472KB

Download
memory/4208-141-0x0000000007340000-0x0000000007362000-memory.dmp

Filesize
136KB

Download
memory/4208-142-0x0000000007370000-0x000000000738E000-memory.dmp

Filesize
120KB

Download
memory/4208-149-0x00000000055A0000-0x00000000055B0000-memory.dmp

Filesize
64KB

Download
memory/4208-225-0x0000000001460000-0x000000000146A000-memory.dmp

Filesize
40KB

Download