nitro | 2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5

Analysis

max time kernel
120s
max time network
140s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 2 IoCs

resource	yara_rule
behavioral1/memory/2808-0-0x00000000008F0000-0x00000000009A0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_DiscordURL
behavioral1/memory/2808-31-0x0000000004D20000-0x0000000004D60000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_DiscordURL

Renames multiple (84) 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-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe\""	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe

Drops desktop.ini file(s) 3 IoCs

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

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

Web Service

T1102

flow	ioc
7	discord.com
8	discord.com
11	discord.com
4	discord.com
5	discord.com
6	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
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-1-5-21-2461186416-2307104501-1787948496-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2808	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
2808	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	2808	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe
Token: SeIncreaseQuotaPrivilege	1928	WMIC.exe
Token: SeSecurityPrivilege	1928	WMIC.exe
Token: SeTakeOwnershipPrivilege	1928	WMIC.exe
Token: SeLoadDriverPrivilege	1928	WMIC.exe
Token: SeSystemProfilePrivilege	1928	WMIC.exe
Token: SeSystemtimePrivilege	1928	WMIC.exe
Token: SeProfSingleProcessPrivilege	1928	WMIC.exe
Token: SeIncBasePriorityPrivilege	1928	WMIC.exe
Token: SeCreatePagefilePrivilege	1928	WMIC.exe
Token: SeBackupPrivilege	1928	WMIC.exe
Token: SeRestorePrivilege	1928	WMIC.exe
Token: SeShutdownPrivilege	1928	WMIC.exe
Token: SeDebugPrivilege	1928	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1928	WMIC.exe
Token: SeRemoteShutdownPrivilege	1928	WMIC.exe
Token: SeUndockPrivilege	1928	WMIC.exe
Token: SeManageVolumePrivilege	1928	WMIC.exe
Token: 33	1928	WMIC.exe
Token: 34	1928	WMIC.exe
Token: 35	1928	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1928	WMIC.exe
Token: SeSecurityPrivilege	1928	WMIC.exe
Token: SeTakeOwnershipPrivilege	1928	WMIC.exe
Token: SeLoadDriverPrivilege	1928	WMIC.exe
Token: SeSystemProfilePrivilege	1928	WMIC.exe
Token: SeSystemtimePrivilege	1928	WMIC.exe
Token: SeProfSingleProcessPrivilege	1928	WMIC.exe
Token: SeIncBasePriorityPrivilege	1928	WMIC.exe
Token: SeCreatePagefilePrivilege	1928	WMIC.exe
Token: SeBackupPrivilege	1928	WMIC.exe
Token: SeRestorePrivilege	1928	WMIC.exe
Token: SeShutdownPrivilege	1928	WMIC.exe
Token: SeDebugPrivilege	1928	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1928	WMIC.exe
Token: SeRemoteShutdownPrivilege	1928	WMIC.exe
Token: SeUndockPrivilege	1928	WMIC.exe
Token: SeManageVolumePrivilege	1928	WMIC.exe
Token: 33	1928	WMIC.exe
Token: 34	1928	WMIC.exe
Token: 35	1928	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 2816	2808	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe	29
PID 2808 wrote to memory of 2816	2808	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe	29
PID 2808 wrote to memory of 2816	2808	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe	29
PID 2808 wrote to memory of 2816	2808	2e8bc37a4a3e06f6cbab2019a246b59eabf903b8a2f54d4ab0fee6fee98061b5.exe	29
PID 2816 wrote to memory of 1928	2816	cmd.exe	31
PID 2816 wrote to memory of 1928	2816	cmd.exe	31
PID 2816 wrote to memory of 1928	2816	cmd.exe	31
PID 2816 wrote to memory of 1928	2816	cmd.exe	31

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:2808
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1928

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/2808-0-0x00000000008F0000-0x00000000009A0000-memory.dmp

Filesize
704KB

Download
memory/2808-1-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2808-2-0x0000000004D20000-0x0000000004D60000-memory.dmp

Filesize
256KB

Download
memory/2808-24-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2808-31-0x0000000004D20000-0x0000000004D60000-memory.dmp

Filesize
256KB

Download
memory/2808-92-0x0000000004D20000-0x0000000004D60000-memory.dmp

Filesize
256KB

Download
memory/2808-93-0x0000000004D20000-0x0000000004D60000-memory.dmp

Filesize
256KB

Download