gh0strat | 820bfdeb6de172662d9d34b85e90f7913edea5595eeb3dc9358df757c02db5be

General

Target

JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe
Size

95KB
MD5

666acf75e9e8f9f26af284b6063ea4bc
SHA1

f5a56c49e480023553b32e3206a3603777bf965a
SHA256

820bfdeb6de172662d9d34b85e90f7913edea5595eeb3dc9358df757c02db5be
SHA512

cd9b6007ea44abb449344352a8a08dc30ab5ab371fd4c290cc957f88d54901bae86fb991dcfee63137ed42c57edfae2258aa51151838528ab5f00d0db7c8d33f
SSDEEP

1536:3a9zFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8pr8eEwN:3KNS4jHS8q/3nTzePCwNUh4E9VEwN

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016d0e-19.dat	family_gh0strat
behavioral1/memory/2580-22-0x0000000000400000-0x000000000044C605-memory.dmp	family_gh0strat
behavioral1/memory/1012-25-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/1012-27-0x0000000020000000-0x0000000020027000-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
Gh0strat family
gh0strat

Deletes itself 1 IoCs

pid	Process
2580	eojnyxhfrs

Executes dropped EXE 1 IoCs

pid	Process
2580	eojnyxhfrs

Loads dropped DLL 3 IoCs

pid	Process
1904	JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe
1904	JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe
1012	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\xgotirpjrr	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eojnyxhfrs
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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\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 3 IoCs

pid	Process
2580	eojnyxhfrs
1012	svchost.exe
1012	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2580	eojnyxhfrs
Token: SeBackupPrivilege	2580	eojnyxhfrs
Token: SeBackupPrivilege	2580	eojnyxhfrs
Token: SeRestorePrivilege	2580	eojnyxhfrs
Token: SeBackupPrivilege	1012	svchost.exe
Token: SeRestorePrivilege	1012	svchost.exe
Token: SeBackupPrivilege	1012	svchost.exe
Token: SeBackupPrivilege	1012	svchost.exe
Token: SeSecurityPrivilege	1012	svchost.exe
Token: SeSecurityPrivilege	1012	svchost.exe
Token: SeBackupPrivilege	1012	svchost.exe
Token: SeBackupPrivilege	1012	svchost.exe
Token: SeSecurityPrivilege	1012	svchost.exe
Token: SeBackupPrivilege	1012	svchost.exe
Token: SeBackupPrivilege	1012	svchost.exe
Token: SeSecurityPrivilege	1012	svchost.exe
Token: SeBackupPrivilege	1012	svchost.exe
Token: SeRestorePrivilege	1012	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 2580	1904	JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe	30
PID 1904 wrote to memory of 2580	1904	JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe	30
PID 1904 wrote to memory of 2580	1904	JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe	30
PID 1904 wrote to memory of 2580	1904	JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1904
- \??\c:\users\admin\appdata\local\eojnyxhfrs
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_666acf75e9e8f9f26af284b6063ea4bc.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_666acf75e9e8f9f26af284b6063ea4bc.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2580

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\programdata\application data\storm\update\%sessionname%\bqyxv.cc3

Filesize
22.0MB

MD5
58fc037e29bc0fc74bbd62f630d359de

SHA1
e2533fdc17859ae0040d1dff7d5db0ee4210bffa

SHA256
53f51434ea94d8be44acfc60c9ad4b113ab440c624b83fc00a5603068408b38b

SHA512
96c3406b974a8985c88a80d08f15dbd1be3f32d27a3b30621f88b23bdce8f4761dbdc1a987949986977869612259302b9ea1e46744559bb2f051d0ec912ea80d

Download Submit
\Users\Admin\AppData\Local\eojnyxhfrs

Filesize
20.1MB

MD5
3378746c513d598a4d88d6718c516490

SHA1
96e1e8645dd1e77f7b693e09d6c81be613d67e63

SHA256
2d644001fdc2b4945cbc7703fc01eb3497f19829fb53523f024d7877d1c23e8e

SHA512
b9b67a28189e6ddc68a436aec6e7cb7ba520dc8077095e84edc50d1dc4223c812476c9ade73c969af8053fe72c69056aed0bdb5b76bcffa081c0d3cbdc6fad6f

Download Submit
memory/1012-23-0x00000000006A0000-0x00000000006A1000-memory.dmp

Filesize
4KB

Download
memory/1012-25-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/1012-27-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/1904-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1904-0-0x0000000000400000-0x000000000044C605-memory.dmp

Filesize
305KB

Download
memory/1904-12-0x0000000000400000-0x000000000044C605-memory.dmp

Filesize
305KB

Download
memory/2580-16-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2580-15-0x0000000000400000-0x000000000044C605-memory.dmp

Filesize
305KB

Download
memory/2580-22-0x0000000000400000-0x000000000044C605-memory.dmp

Filesize
305KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads