nitro | a8ff938761b156a7564cf7456e0b7e539e91407c6fc30fbd7f6574d93e2bae71

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
21-12-2023 22:43

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General

Target

18ac1210022a7d39b06bc6a6f7673bd0.exe
Size

594KB
MD5

18ac1210022a7d39b06bc6a6f7673bd0
SHA1

66b1c674fa8b9812803551c64eb9b6e4d1982be9
SHA256

a8ff938761b156a7564cf7456e0b7e539e91407c6fc30fbd7f6574d93e2bae71
SHA512

e414046979f84fb5193dcc021165cc108084f981b47f2882193d57630b8b0d11a78dc200cd389825e6fdd0e070475a21651ac5627c83cd1ce675da1ef4ee76c6
SSDEEP

12288:EyghPS2IxugLzExJlzjKLt0shRimtXyR1fegnSdYCh6ifn:RCPTeugLIRccmMfaVTf

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 (72) 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\\18ac1210022a7d39b06bc6a6f7673bd0.exe\""	18ac1210022a7d39b06bc6a6f7673bd0.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	18ac1210022a7d39b06bc6a6f7673bd0.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	18ac1210022a7d39b06bc6a6f7673bd0.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	18ac1210022a7d39b06bc6a6f7673bd0.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

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
2	api.ipify.org
3	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\\AppData\\Roaming\\wallpaper.png"	18ac1210022a7d39b06bc6a6f7673bd0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	18ac1210022a7d39b06bc6a6f7673bd0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2100	18ac1210022a7d39b06bc6a6f7673bd0.exe
2100	18ac1210022a7d39b06bc6a6f7673bd0.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	18ac1210022a7d39b06bc6a6f7673bd0.exe
Token: SeIncreaseQuotaPrivilege	2920	WMIC.exe
Token: SeSecurityPrivilege	2920	WMIC.exe
Token: SeTakeOwnershipPrivilege	2920	WMIC.exe
Token: SeLoadDriverPrivilege	2920	WMIC.exe
Token: SeSystemProfilePrivilege	2920	WMIC.exe
Token: SeSystemtimePrivilege	2920	WMIC.exe
Token: SeProfSingleProcessPrivilege	2920	WMIC.exe
Token: SeIncBasePriorityPrivilege	2920	WMIC.exe
Token: SeCreatePagefilePrivilege	2920	WMIC.exe
Token: SeBackupPrivilege	2920	WMIC.exe
Token: SeRestorePrivilege	2920	WMIC.exe
Token: SeShutdownPrivilege	2920	WMIC.exe
Token: SeDebugPrivilege	2920	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2920	WMIC.exe
Token: SeRemoteShutdownPrivilege	2920	WMIC.exe
Token: SeUndockPrivilege	2920	WMIC.exe
Token: SeManageVolumePrivilege	2920	WMIC.exe
Token: 33	2920	WMIC.exe
Token: 34	2920	WMIC.exe
Token: 35	2920	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2920	WMIC.exe
Token: SeSecurityPrivilege	2920	WMIC.exe
Token: SeTakeOwnershipPrivilege	2920	WMIC.exe
Token: SeLoadDriverPrivilege	2920	WMIC.exe
Token: SeSystemProfilePrivilege	2920	WMIC.exe
Token: SeSystemtimePrivilege	2920	WMIC.exe
Token: SeProfSingleProcessPrivilege	2920	WMIC.exe
Token: SeIncBasePriorityPrivilege	2920	WMIC.exe
Token: SeCreatePagefilePrivilege	2920	WMIC.exe
Token: SeBackupPrivilege	2920	WMIC.exe
Token: SeRestorePrivilege	2920	WMIC.exe
Token: SeShutdownPrivilege	2920	WMIC.exe
Token: SeDebugPrivilege	2920	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2920	WMIC.exe
Token: SeRemoteShutdownPrivilege	2920	WMIC.exe
Token: SeUndockPrivilege	2920	WMIC.exe
Token: SeManageVolumePrivilege	2920	WMIC.exe
Token: 33	2920	WMIC.exe
Token: 34	2920	WMIC.exe
Token: 35	2920	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 3044	2100	18ac1210022a7d39b06bc6a6f7673bd0.exe	28
PID 2100 wrote to memory of 3044	2100	18ac1210022a7d39b06bc6a6f7673bd0.exe	28
PID 2100 wrote to memory of 3044	2100	18ac1210022a7d39b06bc6a6f7673bd0.exe	28
PID 2100 wrote to memory of 3044	2100	18ac1210022a7d39b06bc6a6f7673bd0.exe	28
PID 3044 wrote to memory of 2920	3044	cmd.exe	30
PID 3044 wrote to memory of 2920	3044	cmd.exe	30
PID 3044 wrote to memory of 2920	3044	cmd.exe	30
PID 3044 wrote to memory of 2920	3044	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\18ac1210022a7d39b06bc6a6f7673bd0.exe
"C:\Users\Admin\AppData\Local\Temp\18ac1210022a7d39b06bc6a6f7673bd0.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:2100
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3044
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2920

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/2100-0-0x0000000001280000-0x000000000131E000-memory.dmp

Filesize
632KB

Download
memory/2100-1-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/2100-2-0x0000000004910000-0x0000000004950000-memory.dmp

Filesize
256KB

Download
memory/2100-63-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/2100-68-0x0000000004910000-0x0000000004950000-memory.dmp

Filesize
256KB

Download
memory/2100-80-0x0000000004910000-0x0000000004950000-memory.dmp

Filesize
256KB

Download
memory/2100-81-0x0000000004910000-0x0000000004950000-memory.dmp

Filesize
256KB

Download