nitro | 42af7f7d66dfbbe25f515cdc5eeb118e30849f343c0f69b673c4aebd30f6fd56

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16-03-2024 08:23

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General

Target

cd92652e488f7b34b06243001708634a.exe
Size

61KB
MD5

cd92652e488f7b34b06243001708634a
SHA1

fb5f3022b802b589fd406676bed5b54b9089d4e9
SHA256

42af7f7d66dfbbe25f515cdc5eeb118e30849f343c0f69b673c4aebd30f6fd56
SHA512

7e94f40b6f0d0e14efeafe7abfabe90a7d0a3c0e3d1a05764930f3babf5a8544a57e3339877f861fda175fb7246a8e725a4acfd3d6800aa99890dda543186d0a
SSDEEP

768:OJ+uiBAYleAF7LDwUzc8Ugmq3oP/oD7buBApANI4n2yV:OJfAF7r/UO8/oX6QAx5

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 (103) 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-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\cd92652e488f7b34b06243001708634a.exe\""	cd92652e488f7b34b06243001708634a.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	cd92652e488f7b34b06243001708634a.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	cd92652e488f7b34b06243001708634a.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	cd92652e488f7b34b06243001708634a.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	cd92652e488f7b34b06243001708634a.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	cd92652e488f7b34b06243001708634a.exe

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
20	api.ipify.org
21	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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	cd92652e488f7b34b06243001708634a.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4352	1136	WerFault.exe	88
3604	1136	WerFault.exe	88

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1136	cd92652e488f7b34b06243001708634a.exe
1136	cd92652e488f7b34b06243001708634a.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	1136	cd92652e488f7b34b06243001708634a.exe
Token: SeIncreaseQuotaPrivilege	1068	WMIC.exe
Token: SeSecurityPrivilege	1068	WMIC.exe
Token: SeTakeOwnershipPrivilege	1068	WMIC.exe
Token: SeLoadDriverPrivilege	1068	WMIC.exe
Token: SeSystemProfilePrivilege	1068	WMIC.exe
Token: SeSystemtimePrivilege	1068	WMIC.exe
Token: SeProfSingleProcessPrivilege	1068	WMIC.exe
Token: SeIncBasePriorityPrivilege	1068	WMIC.exe
Token: SeCreatePagefilePrivilege	1068	WMIC.exe
Token: SeBackupPrivilege	1068	WMIC.exe
Token: SeRestorePrivilege	1068	WMIC.exe
Token: SeShutdownPrivilege	1068	WMIC.exe
Token: SeDebugPrivilege	1068	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1068	WMIC.exe
Token: SeRemoteShutdownPrivilege	1068	WMIC.exe
Token: SeUndockPrivilege	1068	WMIC.exe
Token: SeManageVolumePrivilege	1068	WMIC.exe
Token: 33	1068	WMIC.exe
Token: 34	1068	WMIC.exe
Token: 35	1068	WMIC.exe
Token: 36	1068	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1068	WMIC.exe
Token: SeSecurityPrivilege	1068	WMIC.exe
Token: SeTakeOwnershipPrivilege	1068	WMIC.exe
Token: SeLoadDriverPrivilege	1068	WMIC.exe
Token: SeSystemProfilePrivilege	1068	WMIC.exe
Token: SeSystemtimePrivilege	1068	WMIC.exe
Token: SeProfSingleProcessPrivilege	1068	WMIC.exe
Token: SeIncBasePriorityPrivilege	1068	WMIC.exe
Token: SeCreatePagefilePrivilege	1068	WMIC.exe
Token: SeBackupPrivilege	1068	WMIC.exe
Token: SeRestorePrivilege	1068	WMIC.exe
Token: SeShutdownPrivilege	1068	WMIC.exe
Token: SeDebugPrivilege	1068	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1068	WMIC.exe
Token: SeRemoteShutdownPrivilege	1068	WMIC.exe
Token: SeUndockPrivilege	1068	WMIC.exe
Token: SeManageVolumePrivilege	1068	WMIC.exe
Token: 33	1068	WMIC.exe
Token: 34	1068	WMIC.exe
Token: 35	1068	WMIC.exe
Token: 36	1068	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1136 wrote to memory of 112	1136	cd92652e488f7b34b06243001708634a.exe	89
PID 1136 wrote to memory of 112	1136	cd92652e488f7b34b06243001708634a.exe	89
PID 1136 wrote to memory of 112	1136	cd92652e488f7b34b06243001708634a.exe	89
PID 112 wrote to memory of 1068	112	cmd.exe	91
PID 112 wrote to memory of 1068	112	cmd.exe	91
PID 112 wrote to memory of 1068	112	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\cd92652e488f7b34b06243001708634a.exe
"C:\Users\Admin\AppData\Local\Temp\cd92652e488f7b34b06243001708634a.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:1136
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:112
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1136 -s 2204
  2⤵
  - Program crash
  PID:4352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1136 -s 2248
  2⤵
  - Program crash
  PID:3604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1136 -ip 1136
1⤵
PID:1904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1136 -ip 1136
1⤵
PID:1048

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

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/1136-0-0x0000000000E10000-0x0000000000E26000-memory.dmp

Filesize
88KB

Download
memory/1136-1-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/1136-2-0x0000000005CC0000-0x0000000006264000-memory.dmp

Filesize
5.6MB

Download
memory/1136-3-0x0000000005810000-0x00000000058A2000-memory.dmp

Filesize
584KB

Download
memory/1136-4-0x0000000005AE0000-0x0000000005AF0000-memory.dmp

Filesize
64KB

Download
memory/1136-45-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/1136-49-0x0000000005AE0000-0x0000000005AF0000-memory.dmp

Filesize
64KB

Download
memory/1136-112-0x00000000065A0000-0x00000000065AA000-memory.dmp

Filesize
40KB

Download
memory/1136-113-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download