nitro | d035e86bc527b1bbe1aecee656db2263a0fc130c34a402ef501740c6ad257f7f

Analysis

max time kernel
141s
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
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 (113) 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-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\8762a2d33a5ebda0d6f4ad092791d0ad.exe\""	8762a2d33a5ebda0d6f4ad092791d0ad.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	8762a2d33a5ebda0d6f4ad092791d0ad.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	8762a2d33a5ebda0d6f4ad092791d0ad.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	8762a2d33a5ebda0d6f4ad092791d0ad.exe
File opened for modification	C:\Users\Admin\Documents\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
11	discord.com
12	discord.com
15	discord.com
17	discord.com
23	discord.com
42	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 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	8762a2d33a5ebda0d6f4ad092791d0ad.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4468	4180	WerFault.exe	84
3516	4180	WerFault.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4180	8762a2d33a5ebda0d6f4ad092791d0ad.exe
4180	8762a2d33a5ebda0d6f4ad092791d0ad.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	4180	8762a2d33a5ebda0d6f4ad092791d0ad.exe
Token: SeIncreaseQuotaPrivilege	4960	WMIC.exe
Token: SeSecurityPrivilege	4960	WMIC.exe
Token: SeTakeOwnershipPrivilege	4960	WMIC.exe
Token: SeLoadDriverPrivilege	4960	WMIC.exe
Token: SeSystemProfilePrivilege	4960	WMIC.exe
Token: SeSystemtimePrivilege	4960	WMIC.exe
Token: SeProfSingleProcessPrivilege	4960	WMIC.exe
Token: SeIncBasePriorityPrivilege	4960	WMIC.exe
Token: SeCreatePagefilePrivilege	4960	WMIC.exe
Token: SeBackupPrivilege	4960	WMIC.exe
Token: SeRestorePrivilege	4960	WMIC.exe
Token: SeShutdownPrivilege	4960	WMIC.exe
Token: SeDebugPrivilege	4960	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4960	WMIC.exe
Token: SeRemoteShutdownPrivilege	4960	WMIC.exe
Token: SeUndockPrivilege	4960	WMIC.exe
Token: SeManageVolumePrivilege	4960	WMIC.exe
Token: 33	4960	WMIC.exe
Token: 34	4960	WMIC.exe
Token: 35	4960	WMIC.exe
Token: 36	4960	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4960	WMIC.exe
Token: SeSecurityPrivilege	4960	WMIC.exe
Token: SeTakeOwnershipPrivilege	4960	WMIC.exe
Token: SeLoadDriverPrivilege	4960	WMIC.exe
Token: SeSystemProfilePrivilege	4960	WMIC.exe
Token: SeSystemtimePrivilege	4960	WMIC.exe
Token: SeProfSingleProcessPrivilege	4960	WMIC.exe
Token: SeIncBasePriorityPrivilege	4960	WMIC.exe
Token: SeCreatePagefilePrivilege	4960	WMIC.exe
Token: SeBackupPrivilege	4960	WMIC.exe
Token: SeRestorePrivilege	4960	WMIC.exe
Token: SeShutdownPrivilege	4960	WMIC.exe
Token: SeDebugPrivilege	4960	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4960	WMIC.exe
Token: SeRemoteShutdownPrivilege	4960	WMIC.exe
Token: SeUndockPrivilege	4960	WMIC.exe
Token: SeManageVolumePrivilege	4960	WMIC.exe
Token: 33	4960	WMIC.exe
Token: 34	4960	WMIC.exe
Token: 35	4960	WMIC.exe
Token: 36	4960	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4180 wrote to memory of 516	4180	8762a2d33a5ebda0d6f4ad092791d0ad.exe	85
PID 4180 wrote to memory of 516	4180	8762a2d33a5ebda0d6f4ad092791d0ad.exe	85
PID 4180 wrote to memory of 516	4180	8762a2d33a5ebda0d6f4ad092791d0ad.exe	85
PID 516 wrote to memory of 4960	516	cmd.exe	87
PID 516 wrote to memory of 4960	516	cmd.exe	87
PID 516 wrote to memory of 4960	516	cmd.exe	87

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:4180
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:516
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4180 -s 2192
  2⤵
  - Program crash
  PID:4468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4180 -s 2212
  2⤵
  - Program crash
  PID:3516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4180 -ip 4180
1⤵
PID:4144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4180 -ip 4180
1⤵
PID:2200

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/4180-0-0x00000000009A0000-0x00000000009B6000-memory.dmp

Filesize
88KB

Download
memory/4180-1-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/4180-2-0x00000000058E0000-0x0000000005E84000-memory.dmp

Filesize
5.6MB

Download
memory/4180-3-0x00000000053D0000-0x0000000005462000-memory.dmp

Filesize
584KB

Download
memory/4180-4-0x0000000005740000-0x0000000005750000-memory.dmp

Filesize
64KB

Download
memory/4180-51-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/4180-56-0x0000000005740000-0x0000000005750000-memory.dmp

Filesize
64KB

Download
memory/4180-122-0x0000000006100000-0x000000000610A000-memory.dmp

Filesize
40KB

Download
memory/4180-123-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download