nitro | b244fa001f1f45246b4608fdac78f80988ad60150aa08e7988fc5dbd37e323ef

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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 (106) 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-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\cbcf9db19f980d9b5232345242d981fa.exe\""	cbcf9db19f980d9b5232345242d981fa.exe

Drops desktop.ini file(s) 5 IoCs

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

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

Web Service

T1102

flow	ioc
16	discord.com
17	discord.com
25	discord.com
30	discord.com
32	discord.com
78	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
10	api.ipify.org
11	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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	cbcf9db19f980d9b5232345242d981fa.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2940	1132	WerFault.exe	88
552	1132	WerFault.exe	88

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1132	cbcf9db19f980d9b5232345242d981fa.exe
1132	cbcf9db19f980d9b5232345242d981fa.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	1132	cbcf9db19f980d9b5232345242d981fa.exe
Token: SeIncreaseQuotaPrivilege	2840	WMIC.exe
Token: SeSecurityPrivilege	2840	WMIC.exe
Token: SeTakeOwnershipPrivilege	2840	WMIC.exe
Token: SeLoadDriverPrivilege	2840	WMIC.exe
Token: SeSystemProfilePrivilege	2840	WMIC.exe
Token: SeSystemtimePrivilege	2840	WMIC.exe
Token: SeProfSingleProcessPrivilege	2840	WMIC.exe
Token: SeIncBasePriorityPrivilege	2840	WMIC.exe
Token: SeCreatePagefilePrivilege	2840	WMIC.exe
Token: SeBackupPrivilege	2840	WMIC.exe
Token: SeRestorePrivilege	2840	WMIC.exe
Token: SeShutdownPrivilege	2840	WMIC.exe
Token: SeDebugPrivilege	2840	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2840	WMIC.exe
Token: SeRemoteShutdownPrivilege	2840	WMIC.exe
Token: SeUndockPrivilege	2840	WMIC.exe
Token: SeManageVolumePrivilege	2840	WMIC.exe
Token: 33	2840	WMIC.exe
Token: 34	2840	WMIC.exe
Token: 35	2840	WMIC.exe
Token: 36	2840	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2840	WMIC.exe
Token: SeSecurityPrivilege	2840	WMIC.exe
Token: SeTakeOwnershipPrivilege	2840	WMIC.exe
Token: SeLoadDriverPrivilege	2840	WMIC.exe
Token: SeSystemProfilePrivilege	2840	WMIC.exe
Token: SeSystemtimePrivilege	2840	WMIC.exe
Token: SeProfSingleProcessPrivilege	2840	WMIC.exe
Token: SeIncBasePriorityPrivilege	2840	WMIC.exe
Token: SeCreatePagefilePrivilege	2840	WMIC.exe
Token: SeBackupPrivilege	2840	WMIC.exe
Token: SeRestorePrivilege	2840	WMIC.exe
Token: SeShutdownPrivilege	2840	WMIC.exe
Token: SeDebugPrivilege	2840	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2840	WMIC.exe
Token: SeRemoteShutdownPrivilege	2840	WMIC.exe
Token: SeUndockPrivilege	2840	WMIC.exe
Token: SeManageVolumePrivilege	2840	WMIC.exe
Token: 33	2840	WMIC.exe
Token: 34	2840	WMIC.exe
Token: 35	2840	WMIC.exe
Token: 36	2840	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 4772	1132	cbcf9db19f980d9b5232345242d981fa.exe	90
PID 1132 wrote to memory of 4772	1132	cbcf9db19f980d9b5232345242d981fa.exe	90
PID 1132 wrote to memory of 4772	1132	cbcf9db19f980d9b5232345242d981fa.exe	90
PID 4772 wrote to memory of 2840	4772	cmd.exe	92
PID 4772 wrote to memory of 2840	4772	cmd.exe	92
PID 4772 wrote to memory of 2840	4772	cmd.exe	92

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:1132
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4772
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 1092
  2⤵
  - Program crash
  PID:2940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 1092
  2⤵
  - Program crash
  PID:552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1132 -ip 1132
1⤵
PID:1724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1132 -ip 1132
1⤵
PID:1436

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/1132-0-0x0000000000250000-0x0000000000266000-memory.dmp

Filesize
88KB

Download
memory/1132-1-0x0000000074720000-0x0000000074ED0000-memory.dmp

Filesize
7.7MB

Download
memory/1132-2-0x0000000005110000-0x00000000056B4000-memory.dmp

Filesize
5.6MB

Download
memory/1132-3-0x0000000004C40000-0x0000000004CD2000-memory.dmp

Filesize
584KB

Download
memory/1132-4-0x0000000004EF0000-0x0000000004F00000-memory.dmp

Filesize
64KB

Download
memory/1132-56-0x0000000074720000-0x0000000074ED0000-memory.dmp

Filesize
7.7MB

Download
memory/1132-62-0x0000000004EF0000-0x0000000004F00000-memory.dmp

Filesize
64KB

Download
memory/1132-115-0x00000000059B0000-0x00000000059BA000-memory.dmp

Filesize
40KB

Download
memory/1132-116-0x0000000074720000-0x0000000074ED0000-memory.dmp

Filesize
7.7MB

Download