nitro | e2b08d94c2307ba0e56ffc8b4146e8fab0310770cff4cda5931c3342a591fdb3

General

Target

Solara.exe
Size

61KB
MD5

c4b8324b5144e4c5aaf54fd2edf7ff35
SHA1

a5ea5afe5c05408a7f9f3a06ab318048194f978e
SHA256

e854a9a2a3055687b6b404c41a548e56747d58318725db61618852ecea0a1e6c
SHA512

06244aee8ac78ca77f0185490054e5b19cbb0e50cb093e0cfcb940440d69d57951b5f981a1042aa8ea81e9dc48f8b8c71b58cd5441fbcb37a68ee8fc932528cd
SSDEEP

768:tKsMqCXfVcWlzM9ZkiANIUsLYLDwUzc80gmq3oP/oD7:tKse1M9ZkiAPPr/0O8/oP

Score

10^/10

nitro discovery persistence ransomware spyware stealer

Malware Config

Signatures

Nitro
A ransomware that demands Discord nitro gift codes to decrypt files.
ransomware nitro
Nitro family
nitro
Renames multiple (91) 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 3 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

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Solara.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Solara.exe\""	Solara.exe

Drops desktop.ini file(s) 5 IoCs

Processes:

Solara.exe

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

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

Web Service
T1102

Processes:

flow ioc

54 discord.com
13 discord.com
14 discord.com
19 discord.com
25 discord.com
29 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.

Processes:

flow ioc

8 api.ipify.org
7 api.ipify.org

flow	ioc
54	discord.com
13	discord.com
14	discord.com
19	discord.com
25	discord.com
29	discord.com

flow	ioc
8	api.ipify.org
7	api.ipify.org

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

Solara.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	Solara.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

Solara.execmd.exeWMIC.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Solara.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WMIC.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Solara.exe

pid process

3936 Solara.exe
3936 Solara.exe

pid	process
3936	Solara.exe
3936	Solara.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

Processes:

Solara.exeWMIC.exe

description	pid	process
Token: SeDebugPrivilege	3936	Solara.exe
Token: SeIncreaseQuotaPrivilege	764	WMIC.exe
Token: SeSecurityPrivilege	764	WMIC.exe
Token: SeTakeOwnershipPrivilege	764	WMIC.exe
Token: SeLoadDriverPrivilege	764	WMIC.exe
Token: SeSystemProfilePrivilege	764	WMIC.exe
Token: SeSystemtimePrivilege	764	WMIC.exe
Token: SeProfSingleProcessPrivilege	764	WMIC.exe
Token: SeIncBasePriorityPrivilege	764	WMIC.exe
Token: SeCreatePagefilePrivilege	764	WMIC.exe
Token: SeBackupPrivilege	764	WMIC.exe
Token: SeRestorePrivilege	764	WMIC.exe
Token: SeShutdownPrivilege	764	WMIC.exe
Token: SeDebugPrivilege	764	WMIC.exe
Token: SeSystemEnvironmentPrivilege	764	WMIC.exe
Token: SeRemoteShutdownPrivilege	764	WMIC.exe
Token: SeUndockPrivilege	764	WMIC.exe
Token: SeManageVolumePrivilege	764	WMIC.exe
Token: 33	764	WMIC.exe
Token: 34	764	WMIC.exe
Token: 35	764	WMIC.exe
Token: 36	764	WMIC.exe
Token: SeIncreaseQuotaPrivilege	764	WMIC.exe
Token: SeSecurityPrivilege	764	WMIC.exe
Token: SeTakeOwnershipPrivilege	764	WMIC.exe
Token: SeLoadDriverPrivilege	764	WMIC.exe
Token: SeSystemProfilePrivilege	764	WMIC.exe
Token: SeSystemtimePrivilege	764	WMIC.exe
Token: SeProfSingleProcessPrivilege	764	WMIC.exe
Token: SeIncBasePriorityPrivilege	764	WMIC.exe
Token: SeCreatePagefilePrivilege	764	WMIC.exe
Token: SeBackupPrivilege	764	WMIC.exe
Token: SeRestorePrivilege	764	WMIC.exe
Token: SeShutdownPrivilege	764	WMIC.exe
Token: SeDebugPrivilege	764	WMIC.exe
Token: SeSystemEnvironmentPrivilege	764	WMIC.exe
Token: SeRemoteShutdownPrivilege	764	WMIC.exe
Token: SeUndockPrivilege	764	WMIC.exe
Token: SeManageVolumePrivilege	764	WMIC.exe
Token: 33	764	WMIC.exe
Token: 34	764	WMIC.exe
Token: 35	764	WMIC.exe
Token: 36	764	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Solara.execmd.exe

description	pid	process	target process
PID 3936 wrote to memory of 3984	3936	Solara.exe	cmd.exe
PID 3936 wrote to memory of 3984	3936	Solara.exe	cmd.exe
PID 3936 wrote to memory of 3984	3936	Solara.exe	cmd.exe
PID 3984 wrote to memory of 764	3984	cmd.exe	WMIC.exe
PID 3984 wrote to memory of 764	3984	cmd.exe	WMIC.exe
PID 3984 wrote to memory of 764	3984	cmd.exe	WMIC.exe

C:\Users\Admin\AppData\Local\Temp\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.exe"
1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3936
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3984
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Defacement

1

T1491

Replay Monitor

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Downloads

memory/3936-0-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/3936-1-0x0000000000B20000-0x0000000000B36000-memory.dmp

Filesize
88KB

Download
memory/3936-2-0x0000000005970000-0x0000000005F14000-memory.dmp

Filesize
5.6MB

Download
memory/3936-3-0x0000000005460000-0x00000000054F2000-memory.dmp

Filesize
584KB

Download
memory/3936-4-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3936-28-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/3936-32-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3936-100-0x0000000006150000-0x000000000615A000-memory.dmp

Filesize
40KB

Download
memory/3936-101-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3936-102-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3936-103-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3936-104-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads