nitro | f5097070861eef9727641d57a9be1ef130da95ba470b35946f25179788034762

Analysis

max time kernel
144s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2023 21:56

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General

Target

04f273a042e83eebdc138f32a9547df5.exe
Size

62KB
MD5

04f273a042e83eebdc138f32a9547df5
SHA1

2fa809ebd777b16647987cd89173cbd1cd007000
SHA256

f5097070861eef9727641d57a9be1ef130da95ba470b35946f25179788034762
SHA512

064f5c7d32c96319fd981d5032124850839d31689d44790a16a8343f3a8c90843335a0998b55103382d0c1e65b7ecc8d34e59b33faf01c48794ea7a4af6d56f6
SSDEEP

768:KKsMqCXfVcWpjDMLoiANIUcdYLDwUzc80gmq3oP/oDT:KKseVMLoiAPRr/0O8/oP

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 (97) 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-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\04f273a042e83eebdc138f32a9547df5.exe\""	04f273a042e83eebdc138f32a9547df5.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	04f273a042e83eebdc138f32a9547df5.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	04f273a042e83eebdc138f32a9547df5.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	04f273a042e83eebdc138f32a9547df5.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	04f273a042e83eebdc138f32a9547df5.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	04f273a042e83eebdc138f32a9547df5.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
5	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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	04f273a042e83eebdc138f32a9547df5.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3144	888	WerFault.exe	16
4988	888	WerFault.exe	16

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
888	04f273a042e83eebdc138f32a9547df5.exe
888	04f273a042e83eebdc138f32a9547df5.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	888	04f273a042e83eebdc138f32a9547df5.exe
Token: SeIncreaseQuotaPrivilege	4976	WMIC.exe
Token: SeSecurityPrivilege	4976	WMIC.exe
Token: SeTakeOwnershipPrivilege	4976	WMIC.exe
Token: SeLoadDriverPrivilege	4976	WMIC.exe
Token: SeSystemProfilePrivilege	4976	WMIC.exe
Token: SeSystemtimePrivilege	4976	WMIC.exe
Token: SeProfSingleProcessPrivilege	4976	WMIC.exe
Token: SeIncBasePriorityPrivilege	4976	WMIC.exe
Token: SeCreatePagefilePrivilege	4976	WMIC.exe
Token: SeBackupPrivilege	4976	WMIC.exe
Token: SeRestorePrivilege	4976	WMIC.exe
Token: SeShutdownPrivilege	4976	WMIC.exe
Token: SeDebugPrivilege	4976	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4976	WMIC.exe
Token: SeRemoteShutdownPrivilege	4976	WMIC.exe
Token: SeUndockPrivilege	4976	WMIC.exe
Token: SeManageVolumePrivilege	4976	WMIC.exe
Token: 33	4976	WMIC.exe
Token: 34	4976	WMIC.exe
Token: 35	4976	WMIC.exe
Token: 36	4976	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4976	WMIC.exe
Token: SeSecurityPrivilege	4976	WMIC.exe
Token: SeTakeOwnershipPrivilege	4976	WMIC.exe
Token: SeLoadDriverPrivilege	4976	WMIC.exe
Token: SeSystemProfilePrivilege	4976	WMIC.exe
Token: SeSystemtimePrivilege	4976	WMIC.exe
Token: SeProfSingleProcessPrivilege	4976	WMIC.exe
Token: SeIncBasePriorityPrivilege	4976	WMIC.exe
Token: SeCreatePagefilePrivilege	4976	WMIC.exe
Token: SeBackupPrivilege	4976	WMIC.exe
Token: SeRestorePrivilege	4976	WMIC.exe
Token: SeShutdownPrivilege	4976	WMIC.exe
Token: SeDebugPrivilege	4976	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4976	WMIC.exe
Token: SeRemoteShutdownPrivilege	4976	WMIC.exe
Token: SeUndockPrivilege	4976	WMIC.exe
Token: SeManageVolumePrivilege	4976	WMIC.exe
Token: 33	4976	WMIC.exe
Token: 34	4976	WMIC.exe
Token: 35	4976	WMIC.exe
Token: 36	4976	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 888 wrote to memory of 1428	888	04f273a042e83eebdc138f32a9547df5.exe	39
PID 888 wrote to memory of 1428	888	04f273a042e83eebdc138f32a9547df5.exe	39
PID 888 wrote to memory of 1428	888	04f273a042e83eebdc138f32a9547df5.exe	39
PID 1428 wrote to memory of 4976	1428	cmd.exe	38
PID 1428 wrote to memory of 4976	1428	cmd.exe	38
PID 1428 wrote to memory of 4976	1428	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\04f273a042e83eebdc138f32a9547df5.exe
"C:\Users\Admin\AppData\Local\Temp\04f273a042e83eebdc138f32a9547df5.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:888
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 888 -s 2192
  2⤵
  - Program crash
  PID:3144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 888 -s 1628
  2⤵
  - Program crash
  PID:4988

C:\Windows\SysWOW64\Wbem\WMIC.exe
wmic csproduct get uuid
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 888 -ip 888
1⤵
PID:3936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 888 -ip 888
1⤵
PID:1844

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/888-1-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/888-0-0x00000000005D0000-0x00000000005E6000-memory.dmp

Filesize
88KB

Download
memory/888-2-0x0000000005480000-0x0000000005A24000-memory.dmp

Filesize
5.6MB

Download
memory/888-3-0x0000000004FD0000-0x0000000005062000-memory.dmp

Filesize
584KB

Download
memory/888-4-0x00000000052A0000-0x00000000052B0000-memory.dmp

Filesize
64KB

Download
memory/888-39-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/888-49-0x00000000052A0000-0x00000000052B0000-memory.dmp

Filesize
64KB

Download
memory/888-106-0x0000000005DA0000-0x0000000005DAA000-memory.dmp

Filesize
40KB

Download
memory/888-107-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download