nitro | 3f85f13eb1e75a7ca07a06707af2a69d2d534734be2b98cd951bdbbc4b1a38c7

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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 (64) 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-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\9eb71e5d0d58d3b454e88bf58bb8553b.exe\""	9eb71e5d0d58d3b454e88bf58bb8553b.exe

Drops desktop.ini file(s) 3 IoCs

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

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

Web Service

T1102

flow	ioc
6	discord.com
7	discord.com
8	discord.com
9	discord.com
10	discord.com
11	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
4	api.ipify.org
5	api.ipify.org

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	9eb71e5d0d58d3b454e88bf58bb8553b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	9eb71e5d0d58d3b454e88bf58bb8553b.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2116	9eb71e5d0d58d3b454e88bf58bb8553b.exe
2116	9eb71e5d0d58d3b454e88bf58bb8553b.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	2116	9eb71e5d0d58d3b454e88bf58bb8553b.exe
Token: SeIncreaseQuotaPrivilege	2364	WMIC.exe
Token: SeSecurityPrivilege	2364	WMIC.exe
Token: SeTakeOwnershipPrivilege	2364	WMIC.exe
Token: SeLoadDriverPrivilege	2364	WMIC.exe
Token: SeSystemProfilePrivilege	2364	WMIC.exe
Token: SeSystemtimePrivilege	2364	WMIC.exe
Token: SeProfSingleProcessPrivilege	2364	WMIC.exe
Token: SeIncBasePriorityPrivilege	2364	WMIC.exe
Token: SeCreatePagefilePrivilege	2364	WMIC.exe
Token: SeBackupPrivilege	2364	WMIC.exe
Token: SeRestorePrivilege	2364	WMIC.exe
Token: SeShutdownPrivilege	2364	WMIC.exe
Token: SeDebugPrivilege	2364	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2364	WMIC.exe
Token: SeRemoteShutdownPrivilege	2364	WMIC.exe
Token: SeUndockPrivilege	2364	WMIC.exe
Token: SeManageVolumePrivilege	2364	WMIC.exe
Token: 33	2364	WMIC.exe
Token: 34	2364	WMIC.exe
Token: 35	2364	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2364	WMIC.exe
Token: SeSecurityPrivilege	2364	WMIC.exe
Token: SeTakeOwnershipPrivilege	2364	WMIC.exe
Token: SeLoadDriverPrivilege	2364	WMIC.exe
Token: SeSystemProfilePrivilege	2364	WMIC.exe
Token: SeSystemtimePrivilege	2364	WMIC.exe
Token: SeProfSingleProcessPrivilege	2364	WMIC.exe
Token: SeIncBasePriorityPrivilege	2364	WMIC.exe
Token: SeCreatePagefilePrivilege	2364	WMIC.exe
Token: SeBackupPrivilege	2364	WMIC.exe
Token: SeRestorePrivilege	2364	WMIC.exe
Token: SeShutdownPrivilege	2364	WMIC.exe
Token: SeDebugPrivilege	2364	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2364	WMIC.exe
Token: SeRemoteShutdownPrivilege	2364	WMIC.exe
Token: SeUndockPrivilege	2364	WMIC.exe
Token: SeManageVolumePrivilege	2364	WMIC.exe
Token: 33	2364	WMIC.exe
Token: 34	2364	WMIC.exe
Token: 35	2364	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2076	2116	9eb71e5d0d58d3b454e88bf58bb8553b.exe	28
PID 2116 wrote to memory of 2076	2116	9eb71e5d0d58d3b454e88bf58bb8553b.exe	28
PID 2116 wrote to memory of 2076	2116	9eb71e5d0d58d3b454e88bf58bb8553b.exe	28
PID 2116 wrote to memory of 2076	2116	9eb71e5d0d58d3b454e88bf58bb8553b.exe	28
PID 2076 wrote to memory of 2364	2076	cmd.exe	30
PID 2076 wrote to memory of 2364	2076	cmd.exe	30
PID 2076 wrote to memory of 2364	2076	cmd.exe	30
PID 2076 wrote to memory of 2364	2076	cmd.exe	30

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:2116
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2076
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2364

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/2116-1-0x0000000000070000-0x00000000002A4000-memory.dmp

Filesize
2.2MB

Download
memory/2116-0-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/2116-2-0x0000000004DF0000-0x0000000004E30000-memory.dmp

Filesize
256KB

Download
memory/2116-38-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/2116-71-0x0000000004DF0000-0x0000000004E30000-memory.dmp

Filesize
256KB

Download
memory/2116-72-0x0000000004DF0000-0x0000000004E30000-memory.dmp

Filesize
256KB

Download