mercurialgrabber | 8694257c04deed3937833145954c65564627f7d40cd20f8401696933a03b7e3f

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	CELESTY BUILDER.EXE

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMWare, Inc.\VMWare Tools	CELESTY BUILDER.EXE

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	CELESTY BUILDER.EXE

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	Celesty.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	CelestyBuilder.exe

Executes dropped EXE 3 IoCs

pid	Process
4968	CelestyBuilder.exe
3968	CELESTY BUILDER.EXE
3720	CELESTY.EXE

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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
26	discord.com
27	discord.com
34	discord.com

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
18	ip-api.com
11	ip4.seeip.org
12	ip4.seeip.org

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	CELESTY BUILDER.EXE
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	CELESTY BUILDER.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 1 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_VMware_&Prod_VMware_Virtual_S	CELESTY BUILDER.EXE

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	CELESTY BUILDER.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	CELESTY BUILDER.EXE

Enumerates system info in registry 2 TTPs 4 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosInformation	CELESTY BUILDER.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemManufacturer	CELESTY BUILDER.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemProductName	CELESTY BUILDER.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Logical Unit Id 0	CELESTY BUILDER.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3968	CELESTY BUILDER.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3720	CELESTY.EXE
3720	CELESTY.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3720	CELESTY.EXE
3720	CELESTY.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 4968	5072	Celesty.exe	85
PID 5072 wrote to memory of 4968	5072	Celesty.exe	85
PID 5072 wrote to memory of 4968	5072	Celesty.exe	85
PID 4968 wrote to memory of 3968	4968	CelestyBuilder.exe	88
PID 4968 wrote to memory of 3968	4968	CelestyBuilder.exe	88
PID 4968 wrote to memory of 3720	4968	CelestyBuilder.exe	90
PID 4968 wrote to memory of 3720	4968	CelestyBuilder.exe	90
PID 4968 wrote to memory of 3720	4968	CelestyBuilder.exe	90

C:\Users\Admin\AppData\Local\Temp\Celesty.exe
"C:\Users\Admin\AppData\Local\Temp\Celesty.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Users\Admin\AppData\Roaming\dump\CelestyBuilder.exe
  "C:\Users\Admin\AppData\Roaming\dump\CelestyBuilder.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4968
- - C:\Users\Admin\AppData\Local\Temp\CELESTY BUILDER.EXE
    "C:\Users\Admin\AppData\Local\Temp\CELESTY BUILDER.EXE"
    3⤵
    - Looks for VirtualBox Guest Additions in registry
    - Looks for VMWare Tools registry key
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Maps connected drives based on registry
    - Checks SCSI registry key(s)
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:3968
- - C:\Users\Admin\AppData\Local\Temp\CELESTY.EXE
    "C:\Users\Admin\AppData\Local\Temp\CELESTY.EXE"
    3⤵
    - Executes dropped EXE
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:3720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

7

Virtualization/Sandbox Evasion

2

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service