nitro | a38318931bf23ba293888c2685d85b3cb376d86ca16d3348f7f5ed57165ac1a8

Analysis

max time kernel
144s
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
04-02-2024 15:20

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General

Target

8f7cbd3b6294a51d05d845817a537c12.exe
Size

2.2MB
MD5

8f7cbd3b6294a51d05d845817a537c12
SHA1

f8111013086ed399ca719f7ae1971b647791832e
SHA256

a38318931bf23ba293888c2685d85b3cb376d86ca16d3348f7f5ed57165ac1a8
SHA512

9759316db3b0b76e4ea97a40633f83800bed52433f803b195bae27282a98b877b94dae9fb832da87ab279876bcbe60a5dd23d97aefece3d9f7cd00fd39f31898
SSDEEP

49152:dcAVHF/hLAkvUG0M7tRUlCnlSNPMzEvmhzQ9QJmqpcg5INw/8hPBTLF39:dNhLAybDRXY0zQS7crNdhPL3

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 (90) 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-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\8f7cbd3b6294a51d05d845817a537c12.exe\""	8f7cbd3b6294a51d05d845817a537c12.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	8f7cbd3b6294a51d05d845817a537c12.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	8f7cbd3b6294a51d05d845817a537c12.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	8f7cbd3b6294a51d05d845817a537c12.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	8f7cbd3b6294a51d05d845817a537c12.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	8f7cbd3b6294a51d05d845817a537c12.exe

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

Web Service

T1102

flow	ioc
53	discord.com
17	discord.com
18	discord.com
25	discord.com
26	discord.com
27	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
10	api.ipify.org
12	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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	8f7cbd3b6294a51d05d845817a537c12.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1620	4696	WerFault.exe	84
740	4696	WerFault.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4696	8f7cbd3b6294a51d05d845817a537c12.exe
4696	8f7cbd3b6294a51d05d845817a537c12.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	4696	8f7cbd3b6294a51d05d845817a537c12.exe
Token: SeIncreaseQuotaPrivilege	3740	WMIC.exe
Token: SeSecurityPrivilege	3740	WMIC.exe
Token: SeTakeOwnershipPrivilege	3740	WMIC.exe
Token: SeLoadDriverPrivilege	3740	WMIC.exe
Token: SeSystemProfilePrivilege	3740	WMIC.exe
Token: SeSystemtimePrivilege	3740	WMIC.exe
Token: SeProfSingleProcessPrivilege	3740	WMIC.exe
Token: SeIncBasePriorityPrivilege	3740	WMIC.exe
Token: SeCreatePagefilePrivilege	3740	WMIC.exe
Token: SeBackupPrivilege	3740	WMIC.exe
Token: SeRestorePrivilege	3740	WMIC.exe
Token: SeShutdownPrivilege	3740	WMIC.exe
Token: SeDebugPrivilege	3740	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3740	WMIC.exe
Token: SeRemoteShutdownPrivilege	3740	WMIC.exe
Token: SeUndockPrivilege	3740	WMIC.exe
Token: SeManageVolumePrivilege	3740	WMIC.exe
Token: 33	3740	WMIC.exe
Token: 34	3740	WMIC.exe
Token: 35	3740	WMIC.exe
Token: 36	3740	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3740	WMIC.exe
Token: SeSecurityPrivilege	3740	WMIC.exe
Token: SeTakeOwnershipPrivilege	3740	WMIC.exe
Token: SeLoadDriverPrivilege	3740	WMIC.exe
Token: SeSystemProfilePrivilege	3740	WMIC.exe
Token: SeSystemtimePrivilege	3740	WMIC.exe
Token: SeProfSingleProcessPrivilege	3740	WMIC.exe
Token: SeIncBasePriorityPrivilege	3740	WMIC.exe
Token: SeCreatePagefilePrivilege	3740	WMIC.exe
Token: SeBackupPrivilege	3740	WMIC.exe
Token: SeRestorePrivilege	3740	WMIC.exe
Token: SeShutdownPrivilege	3740	WMIC.exe
Token: SeDebugPrivilege	3740	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3740	WMIC.exe
Token: SeRemoteShutdownPrivilege	3740	WMIC.exe
Token: SeUndockPrivilege	3740	WMIC.exe
Token: SeManageVolumePrivilege	3740	WMIC.exe
Token: 33	3740	WMIC.exe
Token: 34	3740	WMIC.exe
Token: 35	3740	WMIC.exe
Token: 36	3740	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 396	4696	8f7cbd3b6294a51d05d845817a537c12.exe	85
PID 4696 wrote to memory of 396	4696	8f7cbd3b6294a51d05d845817a537c12.exe	85
PID 4696 wrote to memory of 396	4696	8f7cbd3b6294a51d05d845817a537c12.exe	85
PID 396 wrote to memory of 3740	396	cmd.exe	87
PID 396 wrote to memory of 3740	396	cmd.exe	87
PID 396 wrote to memory of 3740	396	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\8f7cbd3b6294a51d05d845817a537c12.exe
"C:\Users\Admin\AppData\Local\Temp\8f7cbd3b6294a51d05d845817a537c12.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:4696
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:396
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 2188
  2⤵
  - Program crash
  PID:1620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 1668
  2⤵
  - Program crash
  PID:740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4696 -ip 4696
1⤵
PID:4512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4696 -ip 4696
1⤵
PID:3628

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/4696-1-0x0000000074C60000-0x0000000075410000-memory.dmp

Filesize
7.7MB

Download
memory/4696-0-0x00000000005B0000-0x00000000007F0000-memory.dmp

Filesize
2.2MB

Download
memory/4696-2-0x00000000055F0000-0x0000000005B94000-memory.dmp

Filesize
5.6MB

Download
memory/4696-3-0x00000000050E0000-0x0000000005172000-memory.dmp

Filesize
584KB

Download
memory/4696-4-0x0000000005360000-0x0000000005370000-memory.dmp

Filesize
64KB

Download
memory/4696-45-0x0000000074C60000-0x0000000075410000-memory.dmp

Filesize
7.7MB

Download
memory/4696-50-0x0000000005360000-0x0000000005370000-memory.dmp

Filesize
64KB

Download
memory/4696-99-0x0000000005DD0000-0x0000000005DDA000-memory.dmp

Filesize
40KB

Download
memory/4696-100-0x0000000074C60000-0x0000000075410000-memory.dmp

Filesize
7.7MB

Download