nitro | a8ff938761b156a7564cf7456e0b7e539e91407c6fc30fbd7f6574d93e2bae71

Analysis

max time kernel
91s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-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 (100) 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-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\18ac1210022a7d39b06bc6a6f7673bd0.exe\""	18ac1210022a7d39b06bc6a6f7673bd0.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	18ac1210022a7d39b06bc6a6f7673bd0.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	18ac1210022a7d39b06bc6a6f7673bd0.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	18ac1210022a7d39b06bc6a6f7673bd0.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	18ac1210022a7d39b06bc6a6f7673bd0.exe
File opened for modification	C:\Users\Admin\Pictures\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
11	api.ipify.org
12	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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	18ac1210022a7d39b06bc6a6f7673bd0.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1420	3036	WerFault.exe	72
4552	3036	WerFault.exe	72

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3036	18ac1210022a7d39b06bc6a6f7673bd0.exe
3036	18ac1210022a7d39b06bc6a6f7673bd0.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	3036	18ac1210022a7d39b06bc6a6f7673bd0.exe
Token: SeIncreaseQuotaPrivilege	2744	WMIC.exe
Token: SeSecurityPrivilege	2744	WMIC.exe
Token: SeTakeOwnershipPrivilege	2744	WMIC.exe
Token: SeLoadDriverPrivilege	2744	WMIC.exe
Token: SeSystemProfilePrivilege	2744	WMIC.exe
Token: SeSystemtimePrivilege	2744	WMIC.exe
Token: SeProfSingleProcessPrivilege	2744	WMIC.exe
Token: SeIncBasePriorityPrivilege	2744	WMIC.exe
Token: SeCreatePagefilePrivilege	2744	WMIC.exe
Token: SeBackupPrivilege	2744	WMIC.exe
Token: SeRestorePrivilege	2744	WMIC.exe
Token: SeShutdownPrivilege	2744	WMIC.exe
Token: SeDebugPrivilege	2744	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2744	WMIC.exe
Token: SeRemoteShutdownPrivilege	2744	WMIC.exe
Token: SeUndockPrivilege	2744	WMIC.exe
Token: SeManageVolumePrivilege	2744	WMIC.exe
Token: 33	2744	WMIC.exe
Token: 34	2744	WMIC.exe
Token: 35	2744	WMIC.exe
Token: 36	2744	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2744	WMIC.exe
Token: SeSecurityPrivilege	2744	WMIC.exe
Token: SeTakeOwnershipPrivilege	2744	WMIC.exe
Token: SeLoadDriverPrivilege	2744	WMIC.exe
Token: SeSystemProfilePrivilege	2744	WMIC.exe
Token: SeSystemtimePrivilege	2744	WMIC.exe
Token: SeProfSingleProcessPrivilege	2744	WMIC.exe
Token: SeIncBasePriorityPrivilege	2744	WMIC.exe
Token: SeCreatePagefilePrivilege	2744	WMIC.exe
Token: SeBackupPrivilege	2744	WMIC.exe
Token: SeRestorePrivilege	2744	WMIC.exe
Token: SeShutdownPrivilege	2744	WMIC.exe
Token: SeDebugPrivilege	2744	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2744	WMIC.exe
Token: SeRemoteShutdownPrivilege	2744	WMIC.exe
Token: SeUndockPrivilege	2744	WMIC.exe
Token: SeManageVolumePrivilege	2744	WMIC.exe
Token: 33	2744	WMIC.exe
Token: 34	2744	WMIC.exe
Token: 35	2744	WMIC.exe
Token: 36	2744	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 4176	3036	18ac1210022a7d39b06bc6a6f7673bd0.exe	94
PID 3036 wrote to memory of 4176	3036	18ac1210022a7d39b06bc6a6f7673bd0.exe	94
PID 3036 wrote to memory of 4176	3036	18ac1210022a7d39b06bc6a6f7673bd0.exe	94
PID 4176 wrote to memory of 2744	4176	cmd.exe	95
PID 4176 wrote to memory of 2744	4176	cmd.exe	95
PID 4176 wrote to memory of 2744	4176	cmd.exe	95

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:3036
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4176
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 6740
  2⤵
  - Program crash
  PID:1420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 6740
  2⤵
  - Program crash
  PID:4552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3036 -ip 3036
1⤵
PID:4352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3036 -ip 3036
1⤵
PID:4372

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/3036-0-0x0000000000590000-0x000000000062E000-memory.dmp

Filesize
632KB

Download
memory/3036-1-0x0000000074A10000-0x00000000751C0000-memory.dmp

Filesize
7.7MB

Download
memory/3036-2-0x00000000050A0000-0x00000000050B0000-memory.dmp

Filesize
64KB

Download
memory/3036-4-0x00000000052D0000-0x0000000005362000-memory.dmp

Filesize
584KB

Download
memory/3036-3-0x0000000005660000-0x0000000005C04000-memory.dmp

Filesize
5.6MB

Download
memory/3036-65-0x0000000074A10000-0x00000000751C0000-memory.dmp

Filesize
7.7MB

Download
memory/3036-77-0x00000000050A0000-0x00000000050B0000-memory.dmp

Filesize
64KB

Download
memory/3036-109-0x0000000006000000-0x000000000600A000-memory.dmp

Filesize
40KB

Download
memory/3036-110-0x0000000074A10000-0x00000000751C0000-memory.dmp

Filesize
7.7MB

Download