gh0strat | ea34db58698de2e2c7a31f2f09047cabb060c8f7f5cd7465700227d72d95c184

General

Target

JaffaCakes118_4f4c0afe58f981a8868e4c687178406b.exe
Size

206KB
MD5

4f4c0afe58f981a8868e4c687178406b
SHA1

f4ea76da62501da125f591a1d42445f9e72c6c53
SHA256

ea34db58698de2e2c7a31f2f09047cabb060c8f7f5cd7465700227d72d95c184
SHA512

b684aede120eec29ed895fb2a985a6b87b862e33779c9c1940aff7e6f74c5305fc5758f89868a9d7e09e47dde0ef1e29d437692441b17c4f5a1d8b7c49d3a540
SSDEEP

3072:AbTlz5mJnWa3HCNR7dH8yW1u5eO7P3qUkjTne8/5xzE:EAJnWa3iX5W85eJve8x5E

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b64-10.dat	family_gh0strat
behavioral2/memory/5000-12-0x0000000000400000-0x0000000000435000-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
5000	fyjvvflhvm

Executes dropped EXE 1 IoCs

pid	Process
5000	fyjvvflhvm

Loads dropped DLL 1 IoCs

pid	Process
4776	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\nlpwevmegd	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_4f4c0afe58f981a8868e4c687178406b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fyjvvflhvm
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 5 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

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4776	svchost.exe
4776	svchost.exe
4776	svchost.exe
4776	svchost.exe
4776	svchost.exe
4776	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	5000	fyjvvflhvm
Token: SeBackupPrivilege	5000	fyjvvflhvm
Token: SeBackupPrivilege	5000	fyjvvflhvm
Token: SeRestorePrivilege	5000	fyjvvflhvm
Token: SeBackupPrivilege	4776	svchost.exe
Token: SeRestorePrivilege	4776	svchost.exe
Token: SeBackupPrivilege	4776	svchost.exe
Token: SeBackupPrivilege	4776	svchost.exe
Token: SeSecurityPrivilege	4776	svchost.exe
Token: SeSecurityPrivilege	4776	svchost.exe
Token: SeBackupPrivilege	4776	svchost.exe
Token: SeBackupPrivilege	4776	svchost.exe
Token: SeSecurityPrivilege	4776	svchost.exe
Token: SeBackupPrivilege	4776	svchost.exe
Token: SeBackupPrivilege	4776	svchost.exe
Token: SeSecurityPrivilege	4776	svchost.exe
Token: SeBackupPrivilege	4776	svchost.exe
Token: SeRestorePrivilege	4776	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 5000	2628	JaffaCakes118_4f4c0afe58f981a8868e4c687178406b.exe	90
PID 2628 wrote to memory of 5000	2628	JaffaCakes118_4f4c0afe58f981a8868e4c687178406b.exe	90
PID 2628 wrote to memory of 5000	2628	JaffaCakes118_4f4c0afe58f981a8868e4c687178406b.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f4c0afe58f981a8868e4c687178406b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f4c0afe58f981a8868e4c687178406b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2628
- \??\c:\users\admin\appdata\local\fyjvvflhvm
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f4c0afe58f981a8868e4c687178406b.exe"a -sc:\users\admin\appdata\local\temp\jaffacakes118_4f4c0afe58f981a8868e4c687178406b.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:5000

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "netsvcs" -s FASTUSERSWITCHINGCOMPATIBILITY
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:4776

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:\Users\Admin\AppData\Local\fyjvvflhvm

Filesize
22.1MB

MD5
d22376c1c2e62e1aa8949a68ab9b0278

SHA1
c0a6175297bbdaf0c3e4e3ac173614b10597b691

SHA256
64cb4d983617e569528593098c9094716069e5675c66278991345965cab95d9a

SHA512
e48dad4f5d9258c46cb6b82a7aa0caa04a5e6dd0f36e64b9a4080ae7497d32982aad5b5fc13cfc4d88428c54dfe259188b3e92960a605ba4114675aa46fbcb14

Download Submit
\??\c:\users\admin\application data\acd systems\acdsee\imagemn.ddf

Filesize
1.9MB

MD5
3ee7ad51a449f00a65b4554446d2f9f1

SHA1
41317b7f9674614a94171f95b26cb1616ab6b3d0

SHA256
9ee720ebdd63a8955086df49288876b3b9e8105e8fd7434e8a5abf54cbfdb9ad

SHA512
2a82851a7ad377c29f34cf0daa5bb399dbf476637ff72bf83c897218ce8ed7ae1ef91c976e576d54f3eae055dd13eb2ed5e1c95cb2a1c336f03f009f5501e36b

Download Submit
memory/2628-0-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2628-6-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/5000-7-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/5000-12-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads