nitro | 13c62078b17609a57ecdf9c64e3f16fcfdac866ca58c7929326a260ccdef76b6

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2023 01:01

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General

Target

227a73d24f797b6ddc724f54992f05ce.exe
Size

64KB
MD5

227a73d24f797b6ddc724f54992f05ce
SHA1

05d43fa2e84bfbf14e74256b65f3070fdf640e02
SHA256

13c62078b17609a57ecdf9c64e3f16fcfdac866ca58c7929326a260ccdef76b6
SHA512

98916906eab6e5ed98f494c2a522c254992f7849b7324bd176e44812118dd9fd2c1c86e59930b7f645410aa72827041ff6adb3988762a78349ae8dc3dfee770c
SSDEEP

768:UiXcvIVLDwUzc8Ugmq3oP/oDzayoiT8WldZtUn3Ahui:UQr/UO8/oCTmVl1U8ui

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-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\227a73d24f797b6ddc724f54992f05ce.exe\""	227a73d24f797b6ddc724f54992f05ce.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	227a73d24f797b6ddc724f54992f05ce.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	227a73d24f797b6ddc724f54992f05ce.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	227a73d24f797b6ddc724f54992f05ce.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	227a73d24f797b6ddc724f54992f05ce.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	227a73d24f797b6ddc724f54992f05ce.exe

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
8	api.ipify.org
11	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"	227a73d24f797b6ddc724f54992f05ce.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4980	3988	WerFault.exe	38
384	3988	WerFault.exe	38

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3988	227a73d24f797b6ddc724f54992f05ce.exe
3988	227a73d24f797b6ddc724f54992f05ce.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	227a73d24f797b6ddc724f54992f05ce.exe
Token: SeIncreaseQuotaPrivilege	3732	WMIC.exe
Token: SeSecurityPrivilege	3732	WMIC.exe
Token: SeTakeOwnershipPrivilege	3732	WMIC.exe
Token: SeLoadDriverPrivilege	3732	WMIC.exe
Token: SeSystemProfilePrivilege	3732	WMIC.exe
Token: SeSystemtimePrivilege	3732	WMIC.exe
Token: SeProfSingleProcessPrivilege	3732	WMIC.exe
Token: SeIncBasePriorityPrivilege	3732	WMIC.exe
Token: SeCreatePagefilePrivilege	3732	WMIC.exe
Token: SeBackupPrivilege	3732	WMIC.exe
Token: SeRestorePrivilege	3732	WMIC.exe
Token: SeShutdownPrivilege	3732	WMIC.exe
Token: SeDebugPrivilege	3732	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3732	WMIC.exe
Token: SeRemoteShutdownPrivilege	3732	WMIC.exe
Token: SeUndockPrivilege	3732	WMIC.exe
Token: SeManageVolumePrivilege	3732	WMIC.exe
Token: 33	3732	WMIC.exe
Token: 34	3732	WMIC.exe
Token: 35	3732	WMIC.exe
Token: 36	3732	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3732	WMIC.exe
Token: SeSecurityPrivilege	3732	WMIC.exe
Token: SeTakeOwnershipPrivilege	3732	WMIC.exe
Token: SeLoadDriverPrivilege	3732	WMIC.exe
Token: SeSystemProfilePrivilege	3732	WMIC.exe
Token: SeSystemtimePrivilege	3732	WMIC.exe
Token: SeProfSingleProcessPrivilege	3732	WMIC.exe
Token: SeIncBasePriorityPrivilege	3732	WMIC.exe
Token: SeCreatePagefilePrivilege	3732	WMIC.exe
Token: SeBackupPrivilege	3732	WMIC.exe
Token: SeRestorePrivilege	3732	WMIC.exe
Token: SeShutdownPrivilege	3732	WMIC.exe
Token: SeDebugPrivilege	3732	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3732	WMIC.exe
Token: SeRemoteShutdownPrivilege	3732	WMIC.exe
Token: SeUndockPrivilege	3732	WMIC.exe
Token: SeManageVolumePrivilege	3732	WMIC.exe
Token: 33	3732	WMIC.exe
Token: 34	3732	WMIC.exe
Token: 35	3732	WMIC.exe
Token: 36	3732	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 4784	3988	227a73d24f797b6ddc724f54992f05ce.exe	91
PID 3988 wrote to memory of 4784	3988	227a73d24f797b6ddc724f54992f05ce.exe	91
PID 3988 wrote to memory of 4784	3988	227a73d24f797b6ddc724f54992f05ce.exe	91
PID 4784 wrote to memory of 3732	4784	cmd.exe	93
PID 4784 wrote to memory of 3732	4784	cmd.exe	93
PID 4784 wrote to memory of 3732	4784	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\227a73d24f797b6ddc724f54992f05ce.exe
"C:\Users\Admin\AppData\Local\Temp\227a73d24f797b6ddc724f54992f05ce.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:3988
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4784
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 1728
  2⤵
  - Program crash
  PID:4980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 2220
  2⤵
  - Program crash
  PID:384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3988 -ip 3988
1⤵
PID:872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3988 -ip 3988
1⤵
PID:1764

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

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/3988-0-0x0000000000C50000-0x0000000000C66000-memory.dmp

Filesize
88KB

Download
memory/3988-1-0x0000000074DD0000-0x0000000075580000-memory.dmp

Filesize
7.7MB

Download
memory/3988-2-0x0000000005610000-0x0000000005620000-memory.dmp

Filesize
64KB

Download
memory/3988-3-0x0000000005DD0000-0x0000000006374000-memory.dmp

Filesize
5.6MB

Download
memory/3988-4-0x0000000005900000-0x0000000005992000-memory.dmp

Filesize
584KB

Download
memory/3988-53-0x0000000074DD0000-0x0000000075580000-memory.dmp

Filesize
7.7MB

Download
memory/3988-64-0x0000000005610000-0x0000000005620000-memory.dmp

Filesize
64KB

Download
memory/3988-106-0x0000000006630000-0x000000000663A000-memory.dmp

Filesize
40KB

Download
memory/3988-107-0x0000000074DD0000-0x0000000075580000-memory.dmp

Filesize
7.7MB

Download