gh0strat | 55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf

General

Target

55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Size

192KB
MD5

322c08af3d8a278f01ff9a3d9cb902c0
SHA1

36737e27ba0a9cca01c3123f41fe8d214d3159ba
SHA256

55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf
SHA512

e3e4653f3163247473c97c70ed42726ea0bd81b6013b51d05ab4422ee3a6f312be2cb3ea5d11d8e959ad178726062f063c1eb2e0f77998a936193f2e2785f0ad
SSDEEP

3072:LbybpZknW34cWm6zOpUcv9fcGMfs0A6JlPlHJH3Q+OKthU0x:LCZknW34cWm6GfcGMbDWI2

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001232e-54.dat	family_gh0strat
behavioral1/files/0x000c00000001232e-55.dat	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

Deletes itself 1 IoCs

pid	Process
960	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
960	svchost.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	svchost.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\urtmjtdiol	svchost.exe

Checks processor information in registry 2 TTPs 2 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	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
960	svchost.exe
960	svchost.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

description	pid	Process
Token: SeBackupPrivilege	1172	55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Token: SeRestorePrivilege	1172	55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Token: SeBackupPrivilege	1172	55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Token: SeRestorePrivilege	1172	55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Token: SeBackupPrivilege	1172	55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Token: SeRestorePrivilege	1172	55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Token: SeBackupPrivilege	1172	55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Token: SeRestorePrivilege	1172	55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
Token: SeBackupPrivilege	960	svchost.exe
Token: SeRestorePrivilege	960	svchost.exe
Token: SeBackupPrivilege	960	svchost.exe
Token: SeBackupPrivilege	960	svchost.exe
Token: SeSecurityPrivilege	960	svchost.exe
Token: SeSecurityPrivilege	960	svchost.exe
Token: SeBackupPrivilege	960	svchost.exe
Token: SeBackupPrivilege	960	svchost.exe
Token: SeSecurityPrivilege	960	svchost.exe
Token: SeBackupPrivilege	960	svchost.exe
Token: SeBackupPrivilege	960	svchost.exe
Token: SeSecurityPrivilege	960	svchost.exe
Token: SeBackupPrivilege	960	svchost.exe
Token: SeRestorePrivilege	960	svchost.exe

C:\Users\Admin\AppData\Local\Temp\55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe
"C:\Users\Admin\AppData\Local\Temp\55c3fe8f8d9c74b3ec177ae34980b2b7a41699f8dda5c436d3da9299a3c4c4bf.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1172

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Deletes itself
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\??\c:\programdata\application data\storm\update\%sessionname%\cwnie.dlc

Filesize
151.1MB

MD5
28c215c179ed57697c0e41b1c3537c34

SHA1
c4d1391201967d1785d826d7c85da4cad5ac61d7

SHA256
f823bd7035a9a142eb185c4e2c40a17fc4fae4b277aeda4dd8b1b7a9e91a94cf

SHA512
7ccefdea0ee64c699bc4344f7ed61feea47e9a2c40a990464029c6f4a6834195bb07c301751e004e7d571f09a3c6b54e81948b65a6e353e24a39afb869aef30a

Download Submit
\ProgramData\Storm\update\%SESSIONNAME%\cwnie.dlc

Filesize
151.1MB

MD5
28c215c179ed57697c0e41b1c3537c34

SHA1
c4d1391201967d1785d826d7c85da4cad5ac61d7

SHA256
f823bd7035a9a142eb185c4e2c40a17fc4fae4b277aeda4dd8b1b7a9e91a94cf

SHA512
7ccefdea0ee64c699bc4344f7ed61feea47e9a2c40a990464029c6f4a6834195bb07c301751e004e7d571f09a3c6b54e81948b65a6e353e24a39afb869aef30a

Download Submit
memory/960-56-0x0000000076711000-0x0000000076713000-memory.dmp

Filesize
8KB

Download

Analysis

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