gh0strat | 74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3

Analysis

max time kernel
113s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2023 18:28

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General

Target

74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe
Size

36KB
MD5

46b27885ea7d3fef93d48949bb201eae
SHA1

7cc03ea6cadabac5ee6dbe9bf9f2475705edfaa4
SHA256

74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3
SHA512

86ad5f2ba61326b9dee70a41f6c50611488605497b8aac648eaca3fa3c7d62815e44f0347553d1a45d129e36b3ad76777f7dc5cae3abe53fe8d570af35fa8d37
SSDEEP

384:tg/M6HhPy+Jq5j01ULBxtzQyNQR61bMpYj8IxM:tg/5hPy3t01Ulu8bLj8IxM

Score

10^/10

gh0strat persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral2/memory/1876-133-0x00000000022A0000-0x00000000022EE000-memory.dmp	family_gh0strat
behavioral2/memory/1876-134-0x0000000010000000-0x0000000010008000-memory.dmp	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ÏµÍ³Éý¼¶Ö§³Ö = "C:\\Users\\Admin\\AppData\\Local\\Temp\\74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe\\74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe"	74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{0D77E7A7-58EC-4D41-BA9E-3F8C0466BC84}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{904E1E19-EEC6-430B-AD7E-0F67AE022AAB}.catalogItem	svchost.exe

Checks processor information in registry 2 TTPs 5 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Control Panel\Desktop\AutoEndTasks	74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1876	74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe
1876	74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1876	74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe
1876	74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe
"C:\Users\Admin\AppData\Local\Temp\74b103b8da44d7b608aee049d97937582fc9d9a70db5e3dfeb7cf95258a5a4f3.exe"
1⤵
- Adds Run key to start application
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1876

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4684

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1876-133-0x00000000022A0000-0x00000000022EE000-memory.dmp

Filesize
312KB

Download
memory/1876-134-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download