nitro | 3c57851605d84398dfb0df0050ed4542a6a64a9c6008525dcaea4f35d0b5dd90

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-01-2024 07:19

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General

Target

55d3a93ab948a1bad005a276fd64ca77.exe
Size

60KB
MD5

55d3a93ab948a1bad005a276fd64ca77
SHA1

03e59428389de848cd34da7482363faacd9a771d
SHA256

3c57851605d84398dfb0df0050ed4542a6a64a9c6008525dcaea4f35d0b5dd90
SHA512

59839df9722eff95d34ca44ad8c759763b8f2c255e040ef7c5cb79e6cb8e28ad5ff9a939e951ed403f5a17ba42933a96c65892388bbe3c968476afbb64521d50
SSDEEP

768:GOucKn7n1JjDNANIUxqvLDwUzc80gmq3oP/oDL:GO2jDNAPOr/0O8/oX

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 (92) 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-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\55d3a93ab948a1bad005a276fd64ca77.exe\""	55d3a93ab948a1bad005a276fd64ca77.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	55d3a93ab948a1bad005a276fd64ca77.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	55d3a93ab948a1bad005a276fd64ca77.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	55d3a93ab948a1bad005a276fd64ca77.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
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-1-5-21-928733405-3780110381-2966456290-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	55d3a93ab948a1bad005a276fd64ca77.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	55d3a93ab948a1bad005a276fd64ca77.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1724	55d3a93ab948a1bad005a276fd64ca77.exe
1724	55d3a93ab948a1bad005a276fd64ca77.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	55d3a93ab948a1bad005a276fd64ca77.exe
Token: SeIncreaseQuotaPrivilege	2856	WMIC.exe
Token: SeSecurityPrivilege	2856	WMIC.exe
Token: SeTakeOwnershipPrivilege	2856	WMIC.exe
Token: SeLoadDriverPrivilege	2856	WMIC.exe
Token: SeSystemProfilePrivilege	2856	WMIC.exe
Token: SeSystemtimePrivilege	2856	WMIC.exe
Token: SeProfSingleProcessPrivilege	2856	WMIC.exe
Token: SeIncBasePriorityPrivilege	2856	WMIC.exe
Token: SeCreatePagefilePrivilege	2856	WMIC.exe
Token: SeBackupPrivilege	2856	WMIC.exe
Token: SeRestorePrivilege	2856	WMIC.exe
Token: SeShutdownPrivilege	2856	WMIC.exe
Token: SeDebugPrivilege	2856	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2856	WMIC.exe
Token: SeRemoteShutdownPrivilege	2856	WMIC.exe
Token: SeUndockPrivilege	2856	WMIC.exe
Token: SeManageVolumePrivilege	2856	WMIC.exe
Token: 33	2856	WMIC.exe
Token: 34	2856	WMIC.exe
Token: 35	2856	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2856	WMIC.exe
Token: SeSecurityPrivilege	2856	WMIC.exe
Token: SeTakeOwnershipPrivilege	2856	WMIC.exe
Token: SeLoadDriverPrivilege	2856	WMIC.exe
Token: SeSystemProfilePrivilege	2856	WMIC.exe
Token: SeSystemtimePrivilege	2856	WMIC.exe
Token: SeProfSingleProcessPrivilege	2856	WMIC.exe
Token: SeIncBasePriorityPrivilege	2856	WMIC.exe
Token: SeCreatePagefilePrivilege	2856	WMIC.exe
Token: SeBackupPrivilege	2856	WMIC.exe
Token: SeRestorePrivilege	2856	WMIC.exe
Token: SeShutdownPrivilege	2856	WMIC.exe
Token: SeDebugPrivilege	2856	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2856	WMIC.exe
Token: SeRemoteShutdownPrivilege	2856	WMIC.exe
Token: SeUndockPrivilege	2856	WMIC.exe
Token: SeManageVolumePrivilege	2856	WMIC.exe
Token: 33	2856	WMIC.exe
Token: 34	2856	WMIC.exe
Token: 35	2856	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2712	1724	55d3a93ab948a1bad005a276fd64ca77.exe	28
PID 1724 wrote to memory of 2712	1724	55d3a93ab948a1bad005a276fd64ca77.exe	28
PID 1724 wrote to memory of 2712	1724	55d3a93ab948a1bad005a276fd64ca77.exe	28
PID 1724 wrote to memory of 2712	1724	55d3a93ab948a1bad005a276fd64ca77.exe	28
PID 2712 wrote to memory of 2856	2712	cmd.exe	30
PID 2712 wrote to memory of 2856	2712	cmd.exe	30
PID 2712 wrote to memory of 2856	2712	cmd.exe	30
PID 2712 wrote to memory of 2856	2712	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\55d3a93ab948a1bad005a276fd64ca77.exe
"C:\Users\Admin\AppData\Local\Temp\55d3a93ab948a1bad005a276fd64ca77.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:1724
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2856

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/1724-0-0x0000000001240000-0x0000000001256000-memory.dmp

Filesize
88KB

Download
memory/1724-1-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/1724-2-0x0000000004D90000-0x0000000004DD0000-memory.dmp

Filesize
256KB

Download
memory/1724-14-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/1724-20-0x0000000004D90000-0x0000000004DD0000-memory.dmp

Filesize
256KB

Download
memory/1724-100-0x0000000004D90000-0x0000000004DD0000-memory.dmp

Filesize
256KB

Download
memory/1724-101-0x0000000004D90000-0x0000000004DD0000-memory.dmp

Filesize
256KB

Download