nitro | b244fa001f1f45246b4608fdac78f80988ad60150aa08e7988fc5dbd37e323ef

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 15:50

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General

Target

cbcf9db19f980d9b5232345242d981fa.exe
Size

60KB
MD5

cbcf9db19f980d9b5232345242d981fa
SHA1

0f119cc4df6ea8a861141016e595f99da295b16e
SHA256

b244fa001f1f45246b4608fdac78f80988ad60150aa08e7988fc5dbd37e323ef
SHA512

7d30cc8ef76b8f8c611f80edca3ccf7ee0daaaa9adbb5fe80db53ae65b2bc5d75e2a1b3e21ae164e211b7176a108ce92d23bac3d6b2a01f113ca019ea846b9d9
SSDEEP

768:5OXeakeRbRW3DNANIhrtLvLDwUzc80gmq3oP/oDU:5OPW3DNA8Fr/0O8/oA

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 (60) 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-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\cbcf9db19f980d9b5232345242d981fa.exe\""	cbcf9db19f980d9b5232345242d981fa.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	cbcf9db19f980d9b5232345242d981fa.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	cbcf9db19f980d9b5232345242d981fa.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	cbcf9db19f980d9b5232345242d981fa.exe

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

Web Service

T1102

flow	ioc
6	discord.com
7	discord.com
8	discord.com
9	discord.com
4	discord.com
5	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-1-5-21-406356229-2805545415-1236085040-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	cbcf9db19f980d9b5232345242d981fa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	cbcf9db19f980d9b5232345242d981fa.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
812	cbcf9db19f980d9b5232345242d981fa.exe
812	cbcf9db19f980d9b5232345242d981fa.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	cbcf9db19f980d9b5232345242d981fa.exe
Token: SeIncreaseQuotaPrivilege	2560	WMIC.exe
Token: SeSecurityPrivilege	2560	WMIC.exe
Token: SeTakeOwnershipPrivilege	2560	WMIC.exe
Token: SeLoadDriverPrivilege	2560	WMIC.exe
Token: SeSystemProfilePrivilege	2560	WMIC.exe
Token: SeSystemtimePrivilege	2560	WMIC.exe
Token: SeProfSingleProcessPrivilege	2560	WMIC.exe
Token: SeIncBasePriorityPrivilege	2560	WMIC.exe
Token: SeCreatePagefilePrivilege	2560	WMIC.exe
Token: SeBackupPrivilege	2560	WMIC.exe
Token: SeRestorePrivilege	2560	WMIC.exe
Token: SeShutdownPrivilege	2560	WMIC.exe
Token: SeDebugPrivilege	2560	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2560	WMIC.exe
Token: SeRemoteShutdownPrivilege	2560	WMIC.exe
Token: SeUndockPrivilege	2560	WMIC.exe
Token: SeManageVolumePrivilege	2560	WMIC.exe
Token: 33	2560	WMIC.exe
Token: 34	2560	WMIC.exe
Token: 35	2560	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2560	WMIC.exe
Token: SeSecurityPrivilege	2560	WMIC.exe
Token: SeTakeOwnershipPrivilege	2560	WMIC.exe
Token: SeLoadDriverPrivilege	2560	WMIC.exe
Token: SeSystemProfilePrivilege	2560	WMIC.exe
Token: SeSystemtimePrivilege	2560	WMIC.exe
Token: SeProfSingleProcessPrivilege	2560	WMIC.exe
Token: SeIncBasePriorityPrivilege	2560	WMIC.exe
Token: SeCreatePagefilePrivilege	2560	WMIC.exe
Token: SeBackupPrivilege	2560	WMIC.exe
Token: SeRestorePrivilege	2560	WMIC.exe
Token: SeShutdownPrivilege	2560	WMIC.exe
Token: SeDebugPrivilege	2560	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2560	WMIC.exe
Token: SeRemoteShutdownPrivilege	2560	WMIC.exe
Token: SeUndockPrivilege	2560	WMIC.exe
Token: SeManageVolumePrivilege	2560	WMIC.exe
Token: 33	2560	WMIC.exe
Token: 34	2560	WMIC.exe
Token: 35	2560	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 2328	812	cbcf9db19f980d9b5232345242d981fa.exe	28
PID 812 wrote to memory of 2328	812	cbcf9db19f980d9b5232345242d981fa.exe	28
PID 812 wrote to memory of 2328	812	cbcf9db19f980d9b5232345242d981fa.exe	28
PID 812 wrote to memory of 2328	812	cbcf9db19f980d9b5232345242d981fa.exe	28
PID 2328 wrote to memory of 2560	2328	cmd.exe	30
PID 2328 wrote to memory of 2560	2328	cmd.exe	30
PID 2328 wrote to memory of 2560	2328	cmd.exe	30
PID 2328 wrote to memory of 2560	2328	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\cbcf9db19f980d9b5232345242d981fa.exe
"C:\Users\Admin\AppData\Local\Temp\cbcf9db19f980d9b5232345242d981fa.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:812
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2328
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2560

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/812-1-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download
memory/812-0-0x0000000000DC0000-0x0000000000DD6000-memory.dmp

Filesize
88KB

Download
memory/812-2-0x0000000004D60000-0x0000000004DA0000-memory.dmp

Filesize
256KB

Download
memory/812-37-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download
memory/812-42-0x0000000004D60000-0x0000000004DA0000-memory.dmp

Filesize
256KB

Download
memory/812-68-0x0000000004D60000-0x0000000004DA0000-memory.dmp

Filesize
256KB

Download
memory/812-69-0x0000000004D60000-0x0000000004DA0000-memory.dmp

Filesize
256KB

Download