nitro | a31518f6725008ecbd48a1a5f2f77eb7fdd37d5f8d47678002b6aee6278a8661

Analysis

max time kernel
144s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27-02-2024 20:43

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General

Target

aa1c9b407f9399f88b60cbd77bd271a1.exe
Size

61KB
MD5

aa1c9b407f9399f88b60cbd77bd271a1
SHA1

f430b1f4cbb55446be25d3a55bf68e047d209a04
SHA256

a31518f6725008ecbd48a1a5f2f77eb7fdd37d5f8d47678002b6aee6278a8661
SHA512

09d3731ab173a3f11c1f6b235ec9af74aab8e0f9354e31954e652a86e409df845f92ddda9d5361ebd8e6f433e467e76feef2183c8275c618cea0f8d02d534085
SSDEEP

768:gKsMqCXfVcWO/M9ZkiANIUETCYLDwUzc80gmq3oP/oDc:gKseiM9ZkiAPIr/0O8/oY

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 (111) 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-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\aa1c9b407f9399f88b60cbd77bd271a1.exe\""	aa1c9b407f9399f88b60cbd77bd271a1.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	aa1c9b407f9399f88b60cbd77bd271a1.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	aa1c9b407f9399f88b60cbd77bd271a1.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	aa1c9b407f9399f88b60cbd77bd271a1.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	aa1c9b407f9399f88b60cbd77bd271a1.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	aa1c9b407f9399f88b60cbd77bd271a1.exe

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

Web Service

T1102

flow	ioc
36	discord.com
37	discord.com
38	discord.com
39	discord.com
40	discord.com
62	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
34	api.ipify.org
35	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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	aa1c9b407f9399f88b60cbd77bd271a1.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
556	4384	WerFault.exe	62
2188	4384	WerFault.exe	62

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4384	aa1c9b407f9399f88b60cbd77bd271a1.exe
4384	aa1c9b407f9399f88b60cbd77bd271a1.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	4384	aa1c9b407f9399f88b60cbd77bd271a1.exe
Token: SeIncreaseQuotaPrivilege	4432	WMIC.exe
Token: SeSecurityPrivilege	4432	WMIC.exe
Token: SeTakeOwnershipPrivilege	4432	WMIC.exe
Token: SeLoadDriverPrivilege	4432	WMIC.exe
Token: SeSystemProfilePrivilege	4432	WMIC.exe
Token: SeSystemtimePrivilege	4432	WMIC.exe
Token: SeProfSingleProcessPrivilege	4432	WMIC.exe
Token: SeIncBasePriorityPrivilege	4432	WMIC.exe
Token: SeCreatePagefilePrivilege	4432	WMIC.exe
Token: SeBackupPrivilege	4432	WMIC.exe
Token: SeRestorePrivilege	4432	WMIC.exe
Token: SeShutdownPrivilege	4432	WMIC.exe
Token: SeDebugPrivilege	4432	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4432	WMIC.exe
Token: SeRemoteShutdownPrivilege	4432	WMIC.exe
Token: SeUndockPrivilege	4432	WMIC.exe
Token: SeManageVolumePrivilege	4432	WMIC.exe
Token: 33	4432	WMIC.exe
Token: 34	4432	WMIC.exe
Token: 35	4432	WMIC.exe
Token: 36	4432	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4432	WMIC.exe
Token: SeSecurityPrivilege	4432	WMIC.exe
Token: SeTakeOwnershipPrivilege	4432	WMIC.exe
Token: SeLoadDriverPrivilege	4432	WMIC.exe
Token: SeSystemProfilePrivilege	4432	WMIC.exe
Token: SeSystemtimePrivilege	4432	WMIC.exe
Token: SeProfSingleProcessPrivilege	4432	WMIC.exe
Token: SeIncBasePriorityPrivilege	4432	WMIC.exe
Token: SeCreatePagefilePrivilege	4432	WMIC.exe
Token: SeBackupPrivilege	4432	WMIC.exe
Token: SeRestorePrivilege	4432	WMIC.exe
Token: SeShutdownPrivilege	4432	WMIC.exe
Token: SeDebugPrivilege	4432	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4432	WMIC.exe
Token: SeRemoteShutdownPrivilege	4432	WMIC.exe
Token: SeUndockPrivilege	4432	WMIC.exe
Token: SeManageVolumePrivilege	4432	WMIC.exe
Token: 33	4432	WMIC.exe
Token: 34	4432	WMIC.exe
Token: 35	4432	WMIC.exe
Token: 36	4432	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 4140	4384	aa1c9b407f9399f88b60cbd77bd271a1.exe	90
PID 4384 wrote to memory of 4140	4384	aa1c9b407f9399f88b60cbd77bd271a1.exe	90
PID 4384 wrote to memory of 4140	4384	aa1c9b407f9399f88b60cbd77bd271a1.exe	90
PID 4140 wrote to memory of 4432	4140	cmd.exe	92
PID 4140 wrote to memory of 4432	4140	cmd.exe	92
PID 4140 wrote to memory of 4432	4140	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\aa1c9b407f9399f88b60cbd77bd271a1.exe
"C:\Users\Admin\AppData\Local\Temp\aa1c9b407f9399f88b60cbd77bd271a1.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:4384
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4140
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 2248
  2⤵
  - Program crash
  PID:556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 1084
  2⤵
  - Program crash
  PID:2188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4384 -ip 4384
1⤵
PID:5092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 388 -p 4384 -ip 4384
1⤵
PID:2812

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/4384-1-0x0000000075290000-0x0000000075A40000-memory.dmp

Filesize
7.7MB

Download
memory/4384-0-0x0000000000A70000-0x0000000000A86000-memory.dmp

Filesize
88KB

Download
memory/4384-2-0x00000000059B0000-0x0000000005F54000-memory.dmp

Filesize
5.6MB

Download
memory/4384-3-0x00000000054A0000-0x0000000005532000-memory.dmp

Filesize
584KB

Download
memory/4384-4-0x0000000005830000-0x0000000005840000-memory.dmp

Filesize
64KB

Download
memory/4384-33-0x0000000075290000-0x0000000075A40000-memory.dmp

Filesize
7.7MB

Download
memory/4384-38-0x0000000005830000-0x0000000005840000-memory.dmp

Filesize
64KB

Download
memory/4384-120-0x0000000001040000-0x000000000104A000-memory.dmp

Filesize
40KB

Download
memory/4384-121-0x0000000075290000-0x0000000075A40000-memory.dmp

Filesize
7.7MB

Download