nitro | d92f59c8bcd52ff02fd0f769cb91193b1af3fc101ef6b036337446a5174ee7b7

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
16/01/2024, 23:27

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General

Target
612573b52e295ad8712af2a901d7f43c.exe
Size 60KB
Sample240116-3fdh4scfgp
SHA256 d92f59c8bcd52ff02fd0f769cb91193b1af3fc101ef6b036337446a5174ee7b7
MD5 612573b52e295ad8712af2a901d7f43c
SHA1 0a82efa1a4bd688bbb813018befd9312e962e455
SHA512 674563ab5b9914878fe6a724b07a69dd83d0c6a6070bf2b59430b0d3d4439e9930e583bb7424223bfeac73b1558cfbe806c3aa7e784e2120b0948b768d6afe4f
SSDEEP 768:NOucKn7n1JMDNANIUHvLDwUzc80gmq3oP/oDT:NO2MDNAPPr/0O8/oP
MD5 SHA1 SHA512 SSDEEP

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 (94) 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-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\612573b52e295ad8712af2a901d7f43c.exe\""	612573b52e295ad8712af2a901d7f43c.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	612573b52e295ad8712af2a901d7f43c.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	612573b52e295ad8712af2a901d7f43c.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	612573b52e295ad8712af2a901d7f43c.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	612573b52e295ad8712af2a901d7f43c.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	612573b52e295ad8712af2a901d7f43c.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
9	api.ipify.org
10	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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	612573b52e295ad8712af2a901d7f43c.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1500	4484	WerFault.exe	84
4768	4484	WerFault.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4484	612573b52e295ad8712af2a901d7f43c.exe
4484	612573b52e295ad8712af2a901d7f43c.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	4484	612573b52e295ad8712af2a901d7f43c.exe
Token: SeIncreaseQuotaPrivilege	2428	WMIC.exe
Token: SeSecurityPrivilege	2428	WMIC.exe
Token: SeTakeOwnershipPrivilege	2428	WMIC.exe
Token: SeLoadDriverPrivilege	2428	WMIC.exe
Token: SeSystemProfilePrivilege	2428	WMIC.exe
Token: SeSystemtimePrivilege	2428	WMIC.exe
Token: SeProfSingleProcessPrivilege	2428	WMIC.exe
Token: SeIncBasePriorityPrivilege	2428	WMIC.exe
Token: SeCreatePagefilePrivilege	2428	WMIC.exe
Token: SeBackupPrivilege	2428	WMIC.exe
Token: SeRestorePrivilege	2428	WMIC.exe
Token: SeShutdownPrivilege	2428	WMIC.exe
Token: SeDebugPrivilege	2428	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2428	WMIC.exe
Token: SeRemoteShutdownPrivilege	2428	WMIC.exe
Token: SeUndockPrivilege	2428	WMIC.exe
Token: SeManageVolumePrivilege	2428	WMIC.exe
Token: 33	2428	WMIC.exe
Token: 34	2428	WMIC.exe
Token: 35	2428	WMIC.exe
Token: 36	2428	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2428	WMIC.exe
Token: SeSecurityPrivilege	2428	WMIC.exe
Token: SeTakeOwnershipPrivilege	2428	WMIC.exe
Token: SeLoadDriverPrivilege	2428	WMIC.exe
Token: SeSystemProfilePrivilege	2428	WMIC.exe
Token: SeSystemtimePrivilege	2428	WMIC.exe
Token: SeProfSingleProcessPrivilege	2428	WMIC.exe
Token: SeIncBasePriorityPrivilege	2428	WMIC.exe
Token: SeCreatePagefilePrivilege	2428	WMIC.exe
Token: SeBackupPrivilege	2428	WMIC.exe
Token: SeRestorePrivilege	2428	WMIC.exe
Token: SeShutdownPrivilege	2428	WMIC.exe
Token: SeDebugPrivilege	2428	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2428	WMIC.exe
Token: SeRemoteShutdownPrivilege	2428	WMIC.exe
Token: SeUndockPrivilege	2428	WMIC.exe
Token: SeManageVolumePrivilege	2428	WMIC.exe
Token: 33	2428	WMIC.exe
Token: 34	2428	WMIC.exe
Token: 35	2428	WMIC.exe
Token: 36	2428	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4484 wrote to memory of 3748	4484	612573b52e295ad8712af2a901d7f43c.exe	87
PID 4484 wrote to memory of 3748	4484	612573b52e295ad8712af2a901d7f43c.exe	87
PID 4484 wrote to memory of 3748	4484	612573b52e295ad8712af2a901d7f43c.exe	87
PID 3748 wrote to memory of 2428	3748	cmd.exe	90
PID 3748 wrote to memory of 2428	3748	cmd.exe	90
PID 3748 wrote to memory of 2428	3748	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\612573b52e295ad8712af2a901d7f43c.exe
"C:\Users\Admin\AppData\Local\Temp\612573b52e295ad8712af2a901d7f43c.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:4484
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3748
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 2196
  2⤵
  - Program crash
  PID:1500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 2196
  2⤵
  - Program crash
  PID:4768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4484 -ip 4484
1⤵
PID:1540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4484 -ip 4484
1⤵
PID:5076

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/4484-0-0x0000000000330000-0x0000000000346000-memory.dmp

Download

memory/4484-1-0x0000000074EE0000-0x0000000075690000-memory.dmp

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memory/4484-2-0x00000000051D0000-0x0000000005774000-memory.dmp

Download

memory/4484-3-0x0000000004D20000-0x0000000004DB2000-memory.dmp

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memory/4484-4-0x0000000005010000-0x0000000005020000-memory.dmp

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memory/4484-44-0x0000000074EE0000-0x0000000075690000-memory.dmp

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memory/4484-50-0x0000000005010000-0x0000000005020000-memory.dmp

Download

memory/4484-103-0x0000000005AC0000-0x0000000005ACA000-memory.dmp

Download

memory/4484-104-0x0000000074EE0000-0x0000000075690000-memory.dmp

Download