nitro | 402ee7839d85633b339e4c03aa4baeac4a2a6bc5338d20b3ced3d6314c1cec0c

Analysis

max time kernel
145s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2023 17:54

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General

Target

NitroRansomware.exe
Size

690KB
MD5

70e4e301109564dc54617ac74edb4770
SHA1

26e1c6ce39150bb6aeb8473e5c2438ffd7190537
SHA256

402ee7839d85633b339e4c03aa4baeac4a2a6bc5338d20b3ced3d6314c1cec0c
SHA512

018f2354783579a102c216db38aa4b1220d6072337dbc377c6bb9a8f284672efdfb654465a821de3f0f0c3ad801f79ecd97e09f718a336fce79abcb5cbaf2b3a
SSDEEP

12288:H4+ACgkCHHdmg0ByvR4mWWaqMpWTYkmIWXoKOvp5y8HN7CzsXgxx9/06UqU4q:IkamxmWeeWFDuorh57HN7Czswxj/tVO

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 (111) 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-1-5-21-984744499-3605095035-265325720-1000\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
19	api.ipify.org
20	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-1-5-21-984744499-3605095035-265325720-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	NitroRansomware.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1796	852	WerFault.exe	83
3996	852	WerFault.exe	83

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
852	NitroRansomware.exe
852	NitroRansomware.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	852	NitroRansomware.exe
Token: SeIncreaseQuotaPrivilege	5116	WMIC.exe
Token: SeSecurityPrivilege	5116	WMIC.exe
Token: SeTakeOwnershipPrivilege	5116	WMIC.exe
Token: SeLoadDriverPrivilege	5116	WMIC.exe
Token: SeSystemProfilePrivilege	5116	WMIC.exe
Token: SeSystemtimePrivilege	5116	WMIC.exe
Token: SeProfSingleProcessPrivilege	5116	WMIC.exe
Token: SeIncBasePriorityPrivilege	5116	WMIC.exe
Token: SeCreatePagefilePrivilege	5116	WMIC.exe
Token: SeBackupPrivilege	5116	WMIC.exe
Token: SeRestorePrivilege	5116	WMIC.exe
Token: SeShutdownPrivilege	5116	WMIC.exe
Token: SeDebugPrivilege	5116	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5116	WMIC.exe
Token: SeRemoteShutdownPrivilege	5116	WMIC.exe
Token: SeUndockPrivilege	5116	WMIC.exe
Token: SeManageVolumePrivilege	5116	WMIC.exe
Token: 33	5116	WMIC.exe
Token: 34	5116	WMIC.exe
Token: 35	5116	WMIC.exe
Token: 36	5116	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5116	WMIC.exe
Token: SeSecurityPrivilege	5116	WMIC.exe
Token: SeTakeOwnershipPrivilege	5116	WMIC.exe
Token: SeLoadDriverPrivilege	5116	WMIC.exe
Token: SeSystemProfilePrivilege	5116	WMIC.exe
Token: SeSystemtimePrivilege	5116	WMIC.exe
Token: SeProfSingleProcessPrivilege	5116	WMIC.exe
Token: SeIncBasePriorityPrivilege	5116	WMIC.exe
Token: SeCreatePagefilePrivilege	5116	WMIC.exe
Token: SeBackupPrivilege	5116	WMIC.exe
Token: SeRestorePrivilege	5116	WMIC.exe
Token: SeShutdownPrivilege	5116	WMIC.exe
Token: SeDebugPrivilege	5116	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5116	WMIC.exe
Token: SeRemoteShutdownPrivilege	5116	WMIC.exe
Token: SeUndockPrivilege	5116	WMIC.exe
Token: SeManageVolumePrivilege	5116	WMIC.exe
Token: 33	5116	WMIC.exe
Token: 34	5116	WMIC.exe
Token: 35	5116	WMIC.exe
Token: 36	5116	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 852 wrote to memory of 1016	852	NitroRansomware.exe	85
PID 852 wrote to memory of 1016	852	NitroRansomware.exe	85
PID 852 wrote to memory of 1016	852	NitroRansomware.exe	85
PID 1016 wrote to memory of 5116	1016	cmd.exe	88
PID 1016 wrote to memory of 5116	1016	cmd.exe	88
PID 1016 wrote to memory of 5116	1016	cmd.exe	88

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:852
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1016
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:5116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 852 -s 1988
  2⤵
  - Program crash
  PID:1796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 852 -s 1988
  2⤵
  - Program crash
  PID:3996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 852 -ip 852
1⤵
PID:3308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 852 -ip 852
1⤵
PID:1280

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

Replay Monitor

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Downloads

memory/852-0-0x0000000000590000-0x0000000000642000-memory.dmp

Filesize
712KB

Download
memory/852-1-0x00000000749E0000-0x0000000075190000-memory.dmp

Filesize
7.7MB

Download
memory/852-2-0x00000000054E0000-0x0000000005A84000-memory.dmp

Filesize
5.6MB

Download
memory/852-3-0x0000000005030000-0x00000000050C2000-memory.dmp

Filesize
584KB

Download
memory/852-4-0x0000000005280000-0x0000000005290000-memory.dmp

Filesize
64KB

Download
memory/852-45-0x00000000749E0000-0x0000000075190000-memory.dmp

Filesize
7.7MB

Download
memory/852-53-0x0000000005280000-0x0000000005290000-memory.dmp

Filesize
64KB

Download
memory/852-120-0x0000000000DE0000-0x0000000000DEA000-memory.dmp

Filesize
40KB

Download
memory/852-121-0x00000000749E0000-0x0000000075190000-memory.dmp

Filesize
7.7MB

Download