gh0strat | cf2048468a1d6681fa7fdcc8b743dac9de44e3a76f48fa24e45b27e518038a52

Analysis

max time kernel
124s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15/03/2024, 15:34

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General

Target

cbc81630a275625ef4ec92b3d2aa9574.exe
Size

88KB
MD5

cbc81630a275625ef4ec92b3d2aa9574
SHA1

b5df2db238f653b49046f14d61993fd80559dee5
SHA256

cf2048468a1d6681fa7fdcc8b743dac9de44e3a76f48fa24e45b27e518038a52
SHA512

1e3f7a095aaa623ef51e5cdd9a821c792fe63c78bcc94dd908505af5741b819076edb0683759c1f1f81ff8b8829f8674c030462d274ad45fc654a1d9d5d61a4a
SSDEEP

1536:cx5U/NStfwj+mjgC2ycQ/0V2TmCCGqgCenBtgFiGFKq:cfENqwGC2y2kT+Gw4dnq

Score

10^/10

gh0strat bootkit persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0037000000014594-6.dat	family_gh0strat
behavioral1/memory/2336-8-0x0000000000400000-0x0000000000432000-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

Deletes itself 1 IoCs

pid	Process
2096	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2096	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

T1542.003

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\xdqfwdqebh	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	svchost.exe
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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2096	svchost.exe
2096	svchost.exe
2096	svchost.exe
2096	svchost.exe

Suspicious use of AdjustPrivilegeToken 16 IoCs

description	pid	Process
Token: SeBackupPrivilege	2336	cbc81630a275625ef4ec92b3d2aa9574.exe
Token: SeRestorePrivilege	2336	cbc81630a275625ef4ec92b3d2aa9574.exe
Token: SeBackupPrivilege	2096	svchost.exe
Token: SeRestorePrivilege	2096	svchost.exe
Token: SeBackupPrivilege	2096	svchost.exe
Token: SeBackupPrivilege	2096	svchost.exe
Token: SeSecurityPrivilege	2096	svchost.exe
Token: SeSecurityPrivilege	2096	svchost.exe
Token: SeBackupPrivilege	2096	svchost.exe
Token: SeBackupPrivilege	2096	svchost.exe
Token: SeSecurityPrivilege	2096	svchost.exe
Token: SeBackupPrivilege	2096	svchost.exe
Token: SeBackupPrivilege	2096	svchost.exe
Token: SeSecurityPrivilege	2096	svchost.exe
Token: SeBackupPrivilege	2096	svchost.exe
Token: SeRestorePrivilege	2096	svchost.exe

C:\Users\Admin\AppData\Local\Temp\cbc81630a275625ef4ec92b3d2aa9574.exe
"C:\Users\Admin\AppData\Local\Temp\cbc81630a275625ef4ec92b3d2aa9574.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2336

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:2096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\??\c:\users\admin\application data\acd systems\acdsee\imageei.ddf

Filesize
1.1MB

MD5
6648f763050b9905d537da17b83b6983

SHA1
4cf7a5cf3c485428b38b901e2b1a35a4773d1707

SHA256
74eb7b0033150464569318a886ccbdd3664f438594f5f06f5d9e12b32c14ff16

SHA512
014beb265df90cdf29aef52e4edbb2ec37a154654572926002c8bceba3cac0994fd12847e490e6888f615c2ceceab43fcff426202917d212580d83aae4d6b238

Download Submit
memory/2336-0-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2336-2-0x0000000000230000-0x0000000000262000-memory.dmp

Filesize
200KB

Download
memory/2336-1-0x0000000000230000-0x0000000000262000-memory.dmp

Filesize
200KB

Download
memory/2336-3-0x0000000000260000-0x0000000000262000-memory.dmp

Filesize
8KB

Download
memory/2336-8-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download