nitro | 2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5

Analysis

max time kernel
94s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-03-2024 19:05

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General

Target

2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
Size

682KB
MD5

0ecfd9df8f878a63edb1d9b70da07923
SHA1

c6fc3c612c80c9bb69094448f52210752169e01b
SHA256

2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5
SHA512

fb650a96c36555576686e2b8a07f0047190c52fa40a9524c19b51fec73f06b2e262f1235f095370d9b9fe1828b6b93c32b2d967ad007474e7739d9827c057f10
SSDEEP

12288:KZw9KB2xjalxOBITEM9P1kGGGgmlLhO7+MX3p0jJZlYfYg:fs4jg9TfAGGGgm9k+Mnp

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

Detects executables Discord URL observed in first stage droppers 1 IoCs

resource	yara_rule
behavioral2/memory/4748-0-0x00000000001F0000-0x00000000002A0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_DiscordURL

Renames multiple (82) 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\\2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe\""	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe

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

Web Service

T1102

flow	ioc
13	discord.com
18	discord.com
19	discord.com
23	discord.com
44	discord.com
12	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
3	api.ipify.org
4	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"	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3904	4748	WerFault.exe	84
2336	4748	WerFault.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4748	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
4748	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	4748	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
Token: SeIncreaseQuotaPrivilege	3736	WMIC.exe
Token: SeSecurityPrivilege	3736	WMIC.exe
Token: SeTakeOwnershipPrivilege	3736	WMIC.exe
Token: SeLoadDriverPrivilege	3736	WMIC.exe
Token: SeSystemProfilePrivilege	3736	WMIC.exe
Token: SeSystemtimePrivilege	3736	WMIC.exe
Token: SeProfSingleProcessPrivilege	3736	WMIC.exe
Token: SeIncBasePriorityPrivilege	3736	WMIC.exe
Token: SeCreatePagefilePrivilege	3736	WMIC.exe
Token: SeBackupPrivilege	3736	WMIC.exe
Token: SeRestorePrivilege	3736	WMIC.exe
Token: SeShutdownPrivilege	3736	WMIC.exe
Token: SeDebugPrivilege	3736	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3736	WMIC.exe
Token: SeRemoteShutdownPrivilege	3736	WMIC.exe
Token: SeUndockPrivilege	3736	WMIC.exe
Token: SeManageVolumePrivilege	3736	WMIC.exe
Token: 33	3736	WMIC.exe
Token: 34	3736	WMIC.exe
Token: 35	3736	WMIC.exe
Token: 36	3736	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3736	WMIC.exe
Token: SeSecurityPrivilege	3736	WMIC.exe
Token: SeTakeOwnershipPrivilege	3736	WMIC.exe
Token: SeLoadDriverPrivilege	3736	WMIC.exe
Token: SeSystemProfilePrivilege	3736	WMIC.exe
Token: SeSystemtimePrivilege	3736	WMIC.exe
Token: SeProfSingleProcessPrivilege	3736	WMIC.exe
Token: SeIncBasePriorityPrivilege	3736	WMIC.exe
Token: SeCreatePagefilePrivilege	3736	WMIC.exe
Token: SeBackupPrivilege	3736	WMIC.exe
Token: SeRestorePrivilege	3736	WMIC.exe
Token: SeShutdownPrivilege	3736	WMIC.exe
Token: SeDebugPrivilege	3736	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3736	WMIC.exe
Token: SeRemoteShutdownPrivilege	3736	WMIC.exe
Token: SeUndockPrivilege	3736	WMIC.exe
Token: SeManageVolumePrivilege	3736	WMIC.exe
Token: 33	3736	WMIC.exe
Token: 34	3736	WMIC.exe
Token: 35	3736	WMIC.exe
Token: 36	3736	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4748 wrote to memory of 3784	4748	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe	85
PID 4748 wrote to memory of 3784	4748	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe	85
PID 4748 wrote to memory of 3784	4748	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe	85
PID 3784 wrote to memory of 3736	3784	cmd.exe	87
PID 3784 wrote to memory of 3736	3784	cmd.exe	87
PID 3784 wrote to memory of 3736	3784	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
"C:\Users\Admin\AppData\Local\Temp\2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.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:4748
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3784
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4748 -s 2216
  2⤵
  - Program crash
  PID:3904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4748 -s 2216
  2⤵
  - Program crash
  PID:2336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4748 -ip 4748
1⤵
PID:852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4748 -ip 4748
1⤵
PID:1132

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/4748-0-0x00000000001F0000-0x00000000002A0000-memory.dmp

Filesize
704KB

Download
memory/4748-1-0x00000000744A0000-0x0000000074C50000-memory.dmp

Filesize
7.7MB

Download
memory/4748-2-0x0000000005140000-0x00000000056E4000-memory.dmp

Filesize
5.6MB

Download
memory/4748-3-0x0000000004C70000-0x0000000004D02000-memory.dmp

Filesize
584KB

Download
memory/4748-4-0x0000000004F10000-0x0000000004F20000-memory.dmp

Filesize
64KB

Download
memory/4748-14-0x00000000744A0000-0x0000000074C50000-memory.dmp

Filesize
7.7MB

Download
memory/4748-22-0x0000000004F10000-0x0000000004F20000-memory.dmp

Filesize
64KB

Download
memory/4748-91-0x00000000059B0000-0x00000000059BA000-memory.dmp

Filesize
40KB

Download
memory/4748-92-0x00000000744A0000-0x0000000074C50000-memory.dmp

Filesize
7.7MB

Download