nitro | fb92c528c1207a2421ec817cbf9793a3859637d7dc235a3998e07695860e3ce1

Analysis

max time kernel
145s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2024, 16:55

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General

Target
682723a522c86f64b397afcdd65c21a1.exe
Size 61KB
Sample240119-vfcb2sagb3
SHA256 fb92c528c1207a2421ec817cbf9793a3859637d7dc235a3998e07695860e3ce1
MD5 682723a522c86f64b397afcdd65c21a1
SHA1 80999ff4ac0b068eb5028b50601b7ec9fe77a827
SHA512 703aafcece75f310b42c52aa42ddfbf3a680b6e2636c08f5ca1895abc722fe7fce99484b6257bbe70d5253f6a054c74c8b2fb6abcb431702e901efd51e7355c3
SSDEEP 768:VHKsMqCXfVcWlQM9ZkiANIULAYLDwUzc80gmq3oP/oDw:hKseSM9ZkiAP1r/0O8/os
MD5 SHA1 SHA512 SSDEEP

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 (93) 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-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\682723a522c86f64b397afcdd65c21a1.exe\""	682723a522c86f64b397afcdd65c21a1.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	682723a522c86f64b397afcdd65c21a1.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	682723a522c86f64b397afcdd65c21a1.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	682723a522c86f64b397afcdd65c21a1.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	682723a522c86f64b397afcdd65c21a1.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	682723a522c86f64b397afcdd65c21a1.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
9	api.ipify.org
10	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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	682723a522c86f64b397afcdd65c21a1.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1016	1872	WerFault.exe	49
6092	1872	WerFault.exe	49

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1872	682723a522c86f64b397afcdd65c21a1.exe
1872	682723a522c86f64b397afcdd65c21a1.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	1872	682723a522c86f64b397afcdd65c21a1.exe
Token: SeIncreaseQuotaPrivilege	4992	WMIC.exe
Token: SeSecurityPrivilege	4992	WMIC.exe
Token: SeTakeOwnershipPrivilege	4992	WMIC.exe
Token: SeLoadDriverPrivilege	4992	WMIC.exe
Token: SeSystemProfilePrivilege	4992	WMIC.exe
Token: SeSystemtimePrivilege	4992	WMIC.exe
Token: SeProfSingleProcessPrivilege	4992	WMIC.exe
Token: SeIncBasePriorityPrivilege	4992	WMIC.exe
Token: SeCreatePagefilePrivilege	4992	WMIC.exe
Token: SeBackupPrivilege	4992	WMIC.exe
Token: SeRestorePrivilege	4992	WMIC.exe
Token: SeShutdownPrivilege	4992	WMIC.exe
Token: SeDebugPrivilege	4992	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4992	WMIC.exe
Token: SeRemoteShutdownPrivilege	4992	WMIC.exe
Token: SeUndockPrivilege	4992	WMIC.exe
Token: SeManageVolumePrivilege	4992	WMIC.exe
Token: 33	4992	WMIC.exe
Token: 34	4992	WMIC.exe
Token: 35	4992	WMIC.exe
Token: 36	4992	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4992	WMIC.exe
Token: SeSecurityPrivilege	4992	WMIC.exe
Token: SeTakeOwnershipPrivilege	4992	WMIC.exe
Token: SeLoadDriverPrivilege	4992	WMIC.exe
Token: SeSystemProfilePrivilege	4992	WMIC.exe
Token: SeSystemtimePrivilege	4992	WMIC.exe
Token: SeProfSingleProcessPrivilege	4992	WMIC.exe
Token: SeIncBasePriorityPrivilege	4992	WMIC.exe
Token: SeCreatePagefilePrivilege	4992	WMIC.exe
Token: SeBackupPrivilege	4992	WMIC.exe
Token: SeRestorePrivilege	4992	WMIC.exe
Token: SeShutdownPrivilege	4992	WMIC.exe
Token: SeDebugPrivilege	4992	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4992	WMIC.exe
Token: SeRemoteShutdownPrivilege	4992	WMIC.exe
Token: SeUndockPrivilege	4992	WMIC.exe
Token: SeManageVolumePrivilege	4992	WMIC.exe
Token: 33	4992	WMIC.exe
Token: 34	4992	WMIC.exe
Token: 35	4992	WMIC.exe
Token: 36	4992	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1872 wrote to memory of 3480	1872	682723a522c86f64b397afcdd65c21a1.exe	90
PID 1872 wrote to memory of 3480	1872	682723a522c86f64b397afcdd65c21a1.exe	90
PID 1872 wrote to memory of 3480	1872	682723a522c86f64b397afcdd65c21a1.exe	90
PID 3480 wrote to memory of 4992	3480	cmd.exe	92
PID 3480 wrote to memory of 4992	3480	cmd.exe	92
PID 3480 wrote to memory of 4992	3480	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\682723a522c86f64b397afcdd65c21a1.exe
"C:\Users\Admin\AppData\Local\Temp\682723a522c86f64b397afcdd65c21a1.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:1872
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3480
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 2116
  2⤵
  - Program crash
  PID:1016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 2116
  2⤵
  - Program crash
  PID:6092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1872 -ip 1872
1⤵
PID:2396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1872 -ip 1872
1⤵
PID:5324

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/1872-0-0x0000000000B50000-0x0000000000B66000-memory.dmp

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memory/1872-1-0x00000000751B0000-0x0000000075960000-memory.dmp

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memory/1872-2-0x0000000005A20000-0x0000000005FC4000-memory.dmp

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memory/1872-3-0x0000000005550000-0x00000000055E2000-memory.dmp

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memory/1872-4-0x00000000054D0000-0x00000000054E0000-memory.dmp

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memory/1872-82-0x00000000751B0000-0x0000000075960000-memory.dmp

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memory/1872-89-0x00000000054D0000-0x00000000054E0000-memory.dmp

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memory/1872-102-0x0000000006390000-0x000000000639A000-memory.dmp

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memory/1872-103-0x00000000751B0000-0x0000000075960000-memory.dmp

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