gh0strat | cc0dde01117d35378089919a0ec3ca678e6beceab3f093c1526df4949ea46c7b

General

Target

cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe
Size

83KB
MD5

50d4a04522a21e540cbf368f49432778
SHA1

55a4445ad3213788803c3fcd5adce45137b3a155
SHA256

cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f
SHA512

08ebf0b333ad8dc8951347437bc2f1b7647763aaf4dce13d8ab1db14bc66539fd58ba263572b57e07c24b4470b3100585e881a843d663dff1eb7e5201f4e4bae
SSDEEP

1536:5M8/+vtlxZTLY9qgJodItYg2pyb4WR927FSijIVTUKvScg7DSf:T+rx98qgJoItKfqYpxsYcg7DK

Score

10^/10

gh0strat bootkit persistence rat upx

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

Processes:

resource	yara_rule
\??\c:\windows\SysWOW64\ntfastuserswitchingcompatibility.dll	family_gh0strat
behavioral1/memory/1752-6-0x0000000000400000-0x0000000000432000-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

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\ntfastuserswitchingcompatibility.dll"	cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2728 svchost.exe
Loads dropped DLL 1 IoCs

Processes:

svchost.exe

pid process

2728 svchost.exe

pid	process
2728	svchost.exe

pid	process
2728	svchost.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1752-0-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral1/memory/1752-6-0x0000000000400000-0x0000000000432000-memory.dmp	upx

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

Processes:

svchost.exe

description ioc process

File opened for modification \??\PhysicalDrive0 svchost.exe

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

Drops file in System32 directory 2 IoCs

Processes:

cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\ntfastuserswitchingcompatibility.dll	cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.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

Processes:

svchost.exe

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

Processes:

svchost.exe

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe

pid process

1752 cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe

pid	process
1752	cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

svchost.exe

description	pid	process
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeSecurityPrivilege	2728	svchost.exe
Token: SeSecurityPrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeSecurityPrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeSecurityPrivilege	2728	svchost.exe

C:\Users\Admin\AppData\Local\Temp\cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe
"C:\Users\Admin\AppData\Local\Temp\cf8ecb6dbe903a56679d0adaaf5588a58c0f5ac1999fe187189e4d04c916015f.exe"
1⤵
- Sets DLL path for service in the registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:1752

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)
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2728

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

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\windows\SysWOW64\ntfastuserswitchingcompatibility.dll
Filesize
148KB

MD5
b6c23f023be3a7a36f26d2a45f5230b0

SHA1
67cfc2a6e180c9678acd3333c8b63a125f89de9f

SHA256
d04001c208aa6c045d9d7ddc11f0ad459ba3f880c4315d4d6d9c57edc9ab9fc4

SHA512
1dfc32871758871f6f416441fcb34974d7f4d66c6d1740d8e11a79a278ce3a46739a842db24da741a7ae263fdccf59174f695fa3f3f41c96a6452f493b04c24e

Download Submit
memory/1752-0-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1752-1-0x0000000000230000-0x0000000000262000-memory.dmp

Filesize
200KB

Download
memory/1752-6-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads