nitro | be19e89787043f5f1801c993ecd99515a4e3bd0cdae098b64d90c2ce7dd47598

Resubmissions

19-02-2024 21:33

240219-1d7caseb85 10

Analysis

max time kernel
94s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 21:33

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General

Target

NitroRansomware.exe
Size

61KB
MD5

f1c0ee2aa52d41fcd36be766ae6e4f36
SHA1

654786fbdf440f1270453265a77d9000ec4516b7
SHA256

be19e89787043f5f1801c993ecd99515a4e3bd0cdae098b64d90c2ce7dd47598
SHA512

86c768588cc1f4fac53b35dafd08f21726773e1f730c931c42d3b38cb66c3f88c40413374f4a1b489555d067cbebb75e4112a3bf9465b50815aea9c77b2ea1d8
SSDEEP

768:7FCY5Jrg9Jl7M9ZkiANIZaZ6YLDwUzc80gmq3oP/oDU:7FqNM9ZkiAaWr/0O8/ow

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 (75) 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-1-5-21-3073191680-435865314-2862784915-1000\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\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
File opened for modification	C:\Users\Admin\Documents\desktop.ini	NitroRansomware.exe

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

Web Service

T1102

flow	ioc
16	discord.com
17	discord.com
20	discord.com
23	discord.com
25	discord.com
60	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
13	api.ipify.org
14	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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	NitroRansomware.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2408	388	WerFault.exe	21
3244	388	WerFault.exe	21

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
388	NitroRansomware.exe
388	NitroRansomware.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	388	NitroRansomware.exe
Token: SeIncreaseQuotaPrivilege	2952	WMIC.exe
Token: SeSecurityPrivilege	2952	WMIC.exe
Token: SeTakeOwnershipPrivilege	2952	WMIC.exe
Token: SeLoadDriverPrivilege	2952	WMIC.exe
Token: SeSystemProfilePrivilege	2952	WMIC.exe
Token: SeSystemtimePrivilege	2952	WMIC.exe
Token: SeProfSingleProcessPrivilege	2952	WMIC.exe
Token: SeIncBasePriorityPrivilege	2952	WMIC.exe
Token: SeCreatePagefilePrivilege	2952	WMIC.exe
Token: SeBackupPrivilege	2952	WMIC.exe
Token: SeRestorePrivilege	2952	WMIC.exe
Token: SeShutdownPrivilege	2952	WMIC.exe
Token: SeDebugPrivilege	2952	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2952	WMIC.exe
Token: SeRemoteShutdownPrivilege	2952	WMIC.exe
Token: SeUndockPrivilege	2952	WMIC.exe
Token: SeManageVolumePrivilege	2952	WMIC.exe
Token: 33	2952	WMIC.exe
Token: 34	2952	WMIC.exe
Token: 35	2952	WMIC.exe
Token: 36	2952	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2952	WMIC.exe
Token: SeSecurityPrivilege	2952	WMIC.exe
Token: SeTakeOwnershipPrivilege	2952	WMIC.exe
Token: SeLoadDriverPrivilege	2952	WMIC.exe
Token: SeSystemProfilePrivilege	2952	WMIC.exe
Token: SeSystemtimePrivilege	2952	WMIC.exe
Token: SeProfSingleProcessPrivilege	2952	WMIC.exe
Token: SeIncBasePriorityPrivilege	2952	WMIC.exe
Token: SeCreatePagefilePrivilege	2952	WMIC.exe
Token: SeBackupPrivilege	2952	WMIC.exe
Token: SeRestorePrivilege	2952	WMIC.exe
Token: SeShutdownPrivilege	2952	WMIC.exe
Token: SeDebugPrivilege	2952	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2952	WMIC.exe
Token: SeRemoteShutdownPrivilege	2952	WMIC.exe
Token: SeUndockPrivilege	2952	WMIC.exe
Token: SeManageVolumePrivilege	2952	WMIC.exe
Token: 33	2952	WMIC.exe
Token: 34	2952	WMIC.exe
Token: 35	2952	WMIC.exe
Token: 36	2952	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 2100	388	NitroRansomware.exe	83
PID 388 wrote to memory of 2100	388	NitroRansomware.exe	83
PID 388 wrote to memory of 2100	388	NitroRansomware.exe	83
PID 2100 wrote to memory of 2952	2100	cmd.exe	85
PID 2100 wrote to memory of 2952	2100	cmd.exe	85
PID 2100 wrote to memory of 2952	2100	cmd.exe	85

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:388
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2100
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 388 -s 2208
  2⤵
  - Program crash
  PID:2408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 388 -s 2228
  2⤵
  - Program crash
  PID:3244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 388 -ip 388
1⤵
PID:4824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 388 -ip 388
1⤵
PID:1520

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/388-0-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/388-1-0x0000000000170000-0x0000000000186000-memory.dmp

Filesize
88KB

Download
memory/388-2-0x0000000005020000-0x00000000055C4000-memory.dmp

Filesize
5.6MB

Download
memory/388-3-0x0000000004B70000-0x0000000004C02000-memory.dmp

Filesize
584KB

Download
memory/388-4-0x0000000004B50000-0x0000000004B60000-memory.dmp

Filesize
64KB

Download
memory/388-29-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/388-33-0x0000000004B50000-0x0000000004B60000-memory.dmp

Filesize
64KB

Download
memory/388-84-0x0000000000910000-0x000000000091A000-memory.dmp

Filesize
40KB

Download
memory/388-85-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download