nitro | d035e86bc527b1bbe1aecee656db2263a0fc130c34a402ef501740c6ad257f7f

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01-02-2024 16:43

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General

Target

8762a2d33a5ebda0d6f4ad092791d0ad.exe
Size

60KB
MD5

8762a2d33a5ebda0d6f4ad092791d0ad
SHA1

c91b18dc9e5531d218910309d6be05b2a30760ab
SHA256

d035e86bc527b1bbe1aecee656db2263a0fc130c34a402ef501740c6ad257f7f
SHA512

4b74c153fc8802d4a8ab09eb49e976b5611ac6d767692759aa5d5522a8a314df9db9b9ad1f48c2411dcf15421a6f7ce67f68eebd131bb4f67fdc32df603a2cc2
SSDEEP

768:DOucKn7n1JGDNANIUCHvLDwUzc80gmq3oP/oD/:DO2GDNAPyr/0O8/oL

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 (90) 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-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\8762a2d33a5ebda0d6f4ad092791d0ad.exe\""	8762a2d33a5ebda0d6f4ad092791d0ad.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Documents\desktop.ini	8762a2d33a5ebda0d6f4ad092791d0ad.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	8762a2d33a5ebda0d6f4ad092791d0ad.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	8762a2d33a5ebda0d6f4ad092791d0ad.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-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	8762a2d33a5ebda0d6f4ad092791d0ad.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	8762a2d33a5ebda0d6f4ad092791d0ad.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1944	8762a2d33a5ebda0d6f4ad092791d0ad.exe
1944	8762a2d33a5ebda0d6f4ad092791d0ad.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	1944	8762a2d33a5ebda0d6f4ad092791d0ad.exe
Token: SeIncreaseQuotaPrivilege	2088	WMIC.exe
Token: SeSecurityPrivilege	2088	WMIC.exe
Token: SeTakeOwnershipPrivilege	2088	WMIC.exe
Token: SeLoadDriverPrivilege	2088	WMIC.exe
Token: SeSystemProfilePrivilege	2088	WMIC.exe
Token: SeSystemtimePrivilege	2088	WMIC.exe
Token: SeProfSingleProcessPrivilege	2088	WMIC.exe
Token: SeIncBasePriorityPrivilege	2088	WMIC.exe
Token: SeCreatePagefilePrivilege	2088	WMIC.exe
Token: SeBackupPrivilege	2088	WMIC.exe
Token: SeRestorePrivilege	2088	WMIC.exe
Token: SeShutdownPrivilege	2088	WMIC.exe
Token: SeDebugPrivilege	2088	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2088	WMIC.exe
Token: SeRemoteShutdownPrivilege	2088	WMIC.exe
Token: SeUndockPrivilege	2088	WMIC.exe
Token: SeManageVolumePrivilege	2088	WMIC.exe
Token: 33	2088	WMIC.exe
Token: 34	2088	WMIC.exe
Token: 35	2088	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2088	WMIC.exe
Token: SeSecurityPrivilege	2088	WMIC.exe
Token: SeTakeOwnershipPrivilege	2088	WMIC.exe
Token: SeLoadDriverPrivilege	2088	WMIC.exe
Token: SeSystemProfilePrivilege	2088	WMIC.exe
Token: SeSystemtimePrivilege	2088	WMIC.exe
Token: SeProfSingleProcessPrivilege	2088	WMIC.exe
Token: SeIncBasePriorityPrivilege	2088	WMIC.exe
Token: SeCreatePagefilePrivilege	2088	WMIC.exe
Token: SeBackupPrivilege	2088	WMIC.exe
Token: SeRestorePrivilege	2088	WMIC.exe
Token: SeShutdownPrivilege	2088	WMIC.exe
Token: SeDebugPrivilege	2088	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2088	WMIC.exe
Token: SeRemoteShutdownPrivilege	2088	WMIC.exe
Token: SeUndockPrivilege	2088	WMIC.exe
Token: SeManageVolumePrivilege	2088	WMIC.exe
Token: 33	2088	WMIC.exe
Token: 34	2088	WMIC.exe
Token: 35	2088	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 2736	1944	8762a2d33a5ebda0d6f4ad092791d0ad.exe	28
PID 1944 wrote to memory of 2736	1944	8762a2d33a5ebda0d6f4ad092791d0ad.exe	28
PID 1944 wrote to memory of 2736	1944	8762a2d33a5ebda0d6f4ad092791d0ad.exe	28
PID 1944 wrote to memory of 2736	1944	8762a2d33a5ebda0d6f4ad092791d0ad.exe	28
PID 2736 wrote to memory of 2088	2736	cmd.exe	30
PID 2736 wrote to memory of 2088	2736	cmd.exe	30
PID 2736 wrote to memory of 2088	2736	cmd.exe	30
PID 2736 wrote to memory of 2088	2736	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\8762a2d33a5ebda0d6f4ad092791d0ad.exe
"C:\Users\Admin\AppData\Local\Temp\8762a2d33a5ebda0d6f4ad092791d0ad.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:1944
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2088

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/1944-0-0x00000000011C0000-0x00000000011D6000-memory.dmp

Filesize
88KB

Download
memory/1944-1-0x0000000074980000-0x000000007506E000-memory.dmp

Filesize
6.9MB

Download
memory/1944-2-0x0000000000C40000-0x0000000000C80000-memory.dmp

Filesize
256KB

Download
memory/1944-62-0x0000000074980000-0x000000007506E000-memory.dmp

Filesize
6.9MB

Download
memory/1944-69-0x0000000000C40000-0x0000000000C80000-memory.dmp

Filesize
256KB

Download
memory/1944-98-0x0000000000C40000-0x0000000000C80000-memory.dmp

Filesize
256KB

Download
memory/1944-99-0x0000000000C40000-0x0000000000C80000-memory.dmp

Filesize
256KB

Download