gh0strat | 0feeff3ab680deabf6e3583c553cb83647113182e0f0cd64860955e2e510ed62

General

Target

JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe
Size

96KB
MD5

31f4ee37705aa6d03627013abf5c3300
SHA1

c53d67f906a9a742f6930aaadc3661d0cfc02b92
SHA256

0feeff3ab680deabf6e3583c553cb83647113182e0f0cd64860955e2e510ed62
SHA512

efde74b2e2045c1d5bb10f27b870d85e11e5c74811245feec7a8549f3f2a776c6cb21b6737b7131bc2b9bb4a5de6f6f42617702caf2e20ecd8075d5cebb399fc
SSDEEP

1536:7QFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8proyLClEoPHEY42CpLj:7iS4jHS8q/3nTzePCwNUh4E9o+0PHEBj

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016d0e-19.dat	family_gh0strat
behavioral1/memory/2228-21-0x0000000000400000-0x000000000044E31C-memory.dmp	family_gh0strat
behavioral1/memory/1252-24-0x0000000020000000-0x0000000020027000-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
2228	fofscnpydx

Executes dropped EXE 1 IoCs

pid	Process
2228	fofscnpydx

Loads dropped DLL 3 IoCs

pid	Process
2356	JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe
2356	JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe
1252	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\brxqwbwndt	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	fofscnpydx
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.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
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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2228	fofscnpydx
1252	svchost.exe
1252	svchost.exe
1252	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2228	fofscnpydx
Token: SeBackupPrivilege	2228	fofscnpydx
Token: SeBackupPrivilege	2228	fofscnpydx
Token: SeRestorePrivilege	2228	fofscnpydx
Token: SeBackupPrivilege	1252	svchost.exe
Token: SeRestorePrivilege	1252	svchost.exe
Token: SeBackupPrivilege	1252	svchost.exe
Token: SeBackupPrivilege	1252	svchost.exe
Token: SeSecurityPrivilege	1252	svchost.exe
Token: SeSecurityPrivilege	1252	svchost.exe
Token: SeBackupPrivilege	1252	svchost.exe
Token: SeBackupPrivilege	1252	svchost.exe
Token: SeSecurityPrivilege	1252	svchost.exe
Token: SeBackupPrivilege	1252	svchost.exe
Token: SeBackupPrivilege	1252	svchost.exe
Token: SeSecurityPrivilege	1252	svchost.exe
Token: SeBackupPrivilege	1252	svchost.exe
Token: SeRestorePrivilege	1252	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2228	2356	JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe	30
PID 2356 wrote to memory of 2228	2356	JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe	30
PID 2356 wrote to memory of 2228	2356	JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe	30
PID 2356 wrote to memory of 2228	2356	JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356
- \??\c:\users\admin\appdata\local\fofscnpydx
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31f4ee37705aa6d03627013abf5c3300.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_31f4ee37705aa6d03627013abf5c3300.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2228

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:1252

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%\xmfyk.cc3

Filesize
22.1MB

MD5
ef7f7ca78ae49e5fe04bec40fb3298cf

SHA1
2d1a66296a09e5715610c87934fdb1c529cdbfa5

SHA256
fb95682f42ff5c00596b5f6ae63770fa1edf2025d3ae0b597e23d928b6f59e07

SHA512
a9c5bd659b197ca32fb2f99cf174be2c70e2c874eed8f64114dfc6bfc7d24f054c62094f7cd3ab8d3afc050dc3d368c0fc8242bf7638684b996e3dc6dab373d4

Download Submit
\Users\Admin\AppData\Local\fofscnpydx

Filesize
23.7MB

MD5
09d074780624c073cc4fda2ddc98db74

SHA1
92a462f80bc9277debc05cb4a51b0e3caedfa740

SHA256
00d7e0b4e7d51b5d10708766b7d971a9537c44fc47354461dbe5b8937c2d7df2

SHA512
464f5df7396174e0f202f46a14c68b1c6d8e22bdcda151fc55180a16a91e08e83747b469f7ae1cdd8b6642185098ec69a099137d1013b2710172729140ddcd99

Download Submit
memory/1252-22-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/1252-24-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2228-16-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/2228-21-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/2356-0-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/2356-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2356-6-0x0000000000270000-0x00000000002BF000-memory.dmp

Filesize
316KB

Download
memory/2356-15-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads