nitro | 3f85f13eb1e75a7ca07a06707af2a69d2d534734be2b98cd951bdbbc4b1a38c7

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
15-02-2024 22:20

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General

Target

9eb71e5d0d58d3b454e88bf58bb8553b.exe
Size

2.2MB
MD5

9eb71e5d0d58d3b454e88bf58bb8553b
SHA1

5d4ee9daa02e0e0152a583ee9dcd488c151e4800
SHA256

3f85f13eb1e75a7ca07a06707af2a69d2d534734be2b98cd951bdbbc4b1a38c7
SHA512

bb74c65949fea86767c900cf242955175a348d555c671b8584f2f9967637aa34c8b7945c1504e56a320147cae22b37e21eac0ec872b134305c5930d577a9e826
SSDEEP

49152:igVHF/hLAkvUG0M7tRUlCnlSNPMzEvmhzQ9QJmqpcg5INw/8hPBTLF3:ighLAybDRXY0zQS7crNdhPL3

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 (89) 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-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\9eb71e5d0d58d3b454e88bf58bb8553b.exe\""	9eb71e5d0d58d3b454e88bf58bb8553b.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	9eb71e5d0d58d3b454e88bf58bb8553b.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	9eb71e5d0d58d3b454e88bf58bb8553b.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	9eb71e5d0d58d3b454e88bf58bb8553b.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	9eb71e5d0d58d3b454e88bf58bb8553b.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	9eb71e5d0d58d3b454e88bf58bb8553b.exe

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

Web Service

T1102

flow	ioc
17	discord.com
20	discord.com
21	discord.com
53	discord.com
15	discord.com
16	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
13	api.ipify.org
14	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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	9eb71e5d0d58d3b454e88bf58bb8553b.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4136	720	WerFault.exe	83
3288	720	WerFault.exe	83

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
720	9eb71e5d0d58d3b454e88bf58bb8553b.exe
720	9eb71e5d0d58d3b454e88bf58bb8553b.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	720	9eb71e5d0d58d3b454e88bf58bb8553b.exe
Token: SeIncreaseQuotaPrivilege	740	WMIC.exe
Token: SeSecurityPrivilege	740	WMIC.exe
Token: SeTakeOwnershipPrivilege	740	WMIC.exe
Token: SeLoadDriverPrivilege	740	WMIC.exe
Token: SeSystemProfilePrivilege	740	WMIC.exe
Token: SeSystemtimePrivilege	740	WMIC.exe
Token: SeProfSingleProcessPrivilege	740	WMIC.exe
Token: SeIncBasePriorityPrivilege	740	WMIC.exe
Token: SeCreatePagefilePrivilege	740	WMIC.exe
Token: SeBackupPrivilege	740	WMIC.exe
Token: SeRestorePrivilege	740	WMIC.exe
Token: SeShutdownPrivilege	740	WMIC.exe
Token: SeDebugPrivilege	740	WMIC.exe
Token: SeSystemEnvironmentPrivilege	740	WMIC.exe
Token: SeRemoteShutdownPrivilege	740	WMIC.exe
Token: SeUndockPrivilege	740	WMIC.exe
Token: SeManageVolumePrivilege	740	WMIC.exe
Token: 33	740	WMIC.exe
Token: 34	740	WMIC.exe
Token: 35	740	WMIC.exe
Token: 36	740	WMIC.exe
Token: SeIncreaseQuotaPrivilege	740	WMIC.exe
Token: SeSecurityPrivilege	740	WMIC.exe
Token: SeTakeOwnershipPrivilege	740	WMIC.exe
Token: SeLoadDriverPrivilege	740	WMIC.exe
Token: SeSystemProfilePrivilege	740	WMIC.exe
Token: SeSystemtimePrivilege	740	WMIC.exe
Token: SeProfSingleProcessPrivilege	740	WMIC.exe
Token: SeIncBasePriorityPrivilege	740	WMIC.exe
Token: SeCreatePagefilePrivilege	740	WMIC.exe
Token: SeBackupPrivilege	740	WMIC.exe
Token: SeRestorePrivilege	740	WMIC.exe
Token: SeShutdownPrivilege	740	WMIC.exe
Token: SeDebugPrivilege	740	WMIC.exe
Token: SeSystemEnvironmentPrivilege	740	WMIC.exe
Token: SeRemoteShutdownPrivilege	740	WMIC.exe
Token: SeUndockPrivilege	740	WMIC.exe
Token: SeManageVolumePrivilege	740	WMIC.exe
Token: 33	740	WMIC.exe
Token: 34	740	WMIC.exe
Token: 35	740	WMIC.exe
Token: 36	740	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 2136	720	9eb71e5d0d58d3b454e88bf58bb8553b.exe	84
PID 720 wrote to memory of 2136	720	9eb71e5d0d58d3b454e88bf58bb8553b.exe	84
PID 720 wrote to memory of 2136	720	9eb71e5d0d58d3b454e88bf58bb8553b.exe	84
PID 2136 wrote to memory of 740	2136	cmd.exe	86
PID 2136 wrote to memory of 740	2136	cmd.exe	86
PID 2136 wrote to memory of 740	2136	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\9eb71e5d0d58d3b454e88bf58bb8553b.exe
"C:\Users\Admin\AppData\Local\Temp\9eb71e5d0d58d3b454e88bf58bb8553b.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:720
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2136
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 720 -s 2288
  2⤵
  - Program crash
  PID:4136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 720 -s 2288
  2⤵
  - Program crash
  PID:3288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 720 -ip 720
1⤵
PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 720 -ip 720
1⤵
PID:3196

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/720-0-0x0000000000DC0000-0x0000000000FF4000-memory.dmp

Filesize
2.2MB

Download
memory/720-1-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/720-2-0x0000000005EB0000-0x0000000006454000-memory.dmp

Filesize
5.6MB

Download
memory/720-3-0x00000000059E0000-0x0000000005A72000-memory.dmp

Filesize
584KB

Download
memory/720-4-0x0000000005C20000-0x0000000005C30000-memory.dmp

Filesize
64KB

Download
memory/720-36-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/720-42-0x0000000005C20000-0x0000000005C30000-memory.dmp

Filesize
64KB

Download
memory/720-98-0x0000000001680000-0x000000000168A000-memory.dmp

Filesize
40KB

Download
memory/720-99-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download