nitro | 9a8fb8a3604604036f0b7747d6fb17f66076ae60fcc28ce88d8ba60098a09511

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2024, 14:11

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General

Target
NitroRansomware.exe
Size 61KB
Sample240101-rhjmcsccbk
SHA256 c5a67cae54aabf8f5e5d975135d961ed665ef021b8d20dccaebc40b1677baa3c
MD5 067cd97c3c0ae0d8b88963b23c7988c1
SHA1 d0791728110ba68941185fe756069a8b7eed5a89
SHA512 08a7f9cfc8481ed328d7f55a780cccc831809ed995342e30aef7f47652327b5c673af845d6fe5b34e7007ed1ab57f915d43e540d092590220caa5aed4116127c
SSDEEP 768:WKsMqCXfVcWlzM9ZkiANIUvDYLDwUzc80gmq3oP/oDV:WKse1M9ZkiAP0r/0O8/oJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nitro persistence ransomware spyware stealer

Malware Config

Signatures

Nitro
A ransomware that demands Discord nitro gift codes to decrypt files.
ransomware nitro
Renames multiple (92) 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 2 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

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-1-5-21-3791175113-1062217823-1177695025-1000\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\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\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

Web Service
T1102

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
7	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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	NitroRansomware.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5108	1384	WerFault.exe	16
3876	1384	WerFault.exe	16

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1384	NitroRansomware.exe
1384	NitroRansomware.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	1384	NitroRansomware.exe
Token: SeIncreaseQuotaPrivilege	3916	WMIC.exe
Token: SeSecurityPrivilege	3916	WMIC.exe
Token: SeTakeOwnershipPrivilege	3916	WMIC.exe
Token: SeLoadDriverPrivilege	3916	WMIC.exe
Token: SeSystemProfilePrivilege	3916	WMIC.exe
Token: SeSystemtimePrivilege	3916	WMIC.exe
Token: SeProfSingleProcessPrivilege	3916	WMIC.exe
Token: SeIncBasePriorityPrivilege	3916	WMIC.exe
Token: SeCreatePagefilePrivilege	3916	WMIC.exe
Token: SeBackupPrivilege	3916	WMIC.exe
Token: SeRestorePrivilege	3916	WMIC.exe
Token: SeShutdownPrivilege	3916	WMIC.exe
Token: SeDebugPrivilege	3916	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3916	WMIC.exe
Token: SeRemoteShutdownPrivilege	3916	WMIC.exe
Token: SeUndockPrivilege	3916	WMIC.exe
Token: SeManageVolumePrivilege	3916	WMIC.exe
Token: 33	3916	WMIC.exe
Token: 34	3916	WMIC.exe
Token: 35	3916	WMIC.exe
Token: 36	3916	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3916	WMIC.exe
Token: SeSecurityPrivilege	3916	WMIC.exe
Token: SeTakeOwnershipPrivilege	3916	WMIC.exe
Token: SeLoadDriverPrivilege	3916	WMIC.exe
Token: SeSystemProfilePrivilege	3916	WMIC.exe
Token: SeSystemtimePrivilege	3916	WMIC.exe
Token: SeProfSingleProcessPrivilege	3916	WMIC.exe
Token: SeIncBasePriorityPrivilege	3916	WMIC.exe
Token: SeCreatePagefilePrivilege	3916	WMIC.exe
Token: SeBackupPrivilege	3916	WMIC.exe
Token: SeRestorePrivilege	3916	WMIC.exe
Token: SeShutdownPrivilege	3916	WMIC.exe
Token: SeDebugPrivilege	3916	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3916	WMIC.exe
Token: SeRemoteShutdownPrivilege	3916	WMIC.exe
Token: SeUndockPrivilege	3916	WMIC.exe
Token: SeManageVolumePrivilege	3916	WMIC.exe
Token: 33	3916	WMIC.exe
Token: 34	3916	WMIC.exe
Token: 35	3916	WMIC.exe
Token: 36	3916	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 4040	1384	NitroRansomware.exe	20
PID 1384 wrote to memory of 4040	1384	NitroRansomware.exe	20
PID 1384 wrote to memory of 4040	1384	NitroRansomware.exe	20
PID 4040 wrote to memory of 3916	4040	cmd.exe	21
PID 4040 wrote to memory of 3916	4040	cmd.exe	21
PID 4040 wrote to memory of 3916	4040	cmd.exe	21

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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4040
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1384 -s 1680
  2⤵
  - Program crash
  PID:5108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1384 -s 2272
  2⤵
  - Program crash
  PID:3876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1384 -ip 1384
1⤵
PID:1352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1384 -ip 1384
1⤵
PID:4388

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Defacement

T1491

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Downloads

memory/1384-1-0x0000000075070000-0x0000000075820000-memory.dmp

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memory/1384-0-0x0000000000400000-0x0000000000416000-memory.dmp

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memory/1384-2-0x00000000052B0000-0x0000000005854000-memory.dmp

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memory/1384-4-0x0000000004DE0000-0x0000000004DF0000-memory.dmp

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memory/1384-3-0x0000000004DF0000-0x0000000004E82000-memory.dmp

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memory/1384-58-0x0000000075070000-0x0000000075820000-memory.dmp

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memory/1384-65-0x0000000004DE0000-0x0000000004DF0000-memory.dmp

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memory/1384-101-0x0000000005B50000-0x0000000005B5A000-memory.dmp

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memory/1384-102-0x0000000075070000-0x0000000075820000-memory.dmp

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