gh0strat | 59ed8a7a3905296a3977a7d1eef5c2cc5d98fdd3ea1c4ffa42fce4746081503b

General

Target

JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe
Size

96KB
MD5

4d7792981944ef0283a2ac7f7e12b6ce
SHA1

580bfa54cccea158425b4e79709b66c7aa2a430c
SHA256

59ed8a7a3905296a3977a7d1eef5c2cc5d98fdd3ea1c4ffa42fce4746081503b
SHA512

59430100861fcdab5b42fc17d2b1b85a3a3c237bb6f03c2603988180a85c40ddfde95b91941e70722ca242f84b1edbf12a49e39b571eb0bb55d471467c05314d
SSDEEP

1536:VNFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8pr07+StQ753y:VzS4jHS8q/3nTzePCwNUh4E9l75C

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016de8-18.dat	family_gh0strat
behavioral1/memory/1976-21-0x0000000000400000-0x000000000044E4A4-memory.dmp	family_gh0strat
behavioral1/memory/380-25-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/380-27-0x0000000020000000-0x0000000020027000-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
1976	frcwskewcg

Executes dropped EXE 1 IoCs

pid	Process
1976	frcwskewcg

Loads dropped DLL 3 IoCs

pid	Process
2980	JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe
2980	JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe
380	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\cauqesbvka	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	frcwskewcg

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
1976	frcwskewcg
380	svchost.exe
380	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	1976	frcwskewcg
Token: SeBackupPrivilege	1976	frcwskewcg
Token: SeBackupPrivilege	1976	frcwskewcg
Token: SeRestorePrivilege	1976	frcwskewcg
Token: SeBackupPrivilege	380	svchost.exe
Token: SeRestorePrivilege	380	svchost.exe
Token: SeBackupPrivilege	380	svchost.exe
Token: SeBackupPrivilege	380	svchost.exe
Token: SeSecurityPrivilege	380	svchost.exe
Token: SeSecurityPrivilege	380	svchost.exe
Token: SeBackupPrivilege	380	svchost.exe
Token: SeBackupPrivilege	380	svchost.exe
Token: SeSecurityPrivilege	380	svchost.exe
Token: SeBackupPrivilege	380	svchost.exe
Token: SeBackupPrivilege	380	svchost.exe
Token: SeSecurityPrivilege	380	svchost.exe
Token: SeBackupPrivilege	380	svchost.exe
Token: SeRestorePrivilege	380	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 1976	2980	JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe	30
PID 2980 wrote to memory of 1976	2980	JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe	30
PID 2980 wrote to memory of 1976	2980	JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe	30
PID 2980 wrote to memory of 1976	2980	JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2980
- \??\c:\users\admin\appdata\local\frcwskewcg
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_4d7792981944ef0283a2ac7f7e12b6ce.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1976

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:380

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%\flmvt.cc3

Filesize
22.0MB

MD5
61ffad2bf3bc77aade9f8e965dbfb9a3

SHA1
4054838bb1350ae636269b8373771bf1cbef8ce1

SHA256
1b1a9e725d2072c98f8526559019db395616fd4db10a96155cd64ef8602c8a9f

SHA512
036f171a0d784a2cb8e66391a81f2e877c4d127c8d5fe0522b391ffbea2e40ae201566ba8a9178028ee037b44d7dee06849d513f1c64920dc867776e97f4215b

Download Submit
\Users\Admin\AppData\Local\frcwskewcg

Filesize
21.5MB

MD5
72d330137e191b43bcc7d044d387826a

SHA1
e82ea2d8910b3bfcaf493042672e8139615fdd43

SHA256
968a099588eb3be8512f53db73240ac6b45b1ff47eb43b1c39e13481ae8f68f2

SHA512
28707580f678947a24daddf49d475c90bd442f7cb8d313ecc15d8f9c983f2266fe1848f258effe7acd3a3280ad4c1a09456a93db476ff998d6c4a6b54a7d12ba

Download Submit
memory/380-22-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download
memory/380-25-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/380-27-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/1976-13-0x0000000000400000-0x000000000044E4A4-memory.dmp

Filesize
313KB

Download
memory/1976-15-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1976-14-0x0000000000020000-0x0000000000021000-memory.dmp

Filesize
4KB

Download
memory/1976-21-0x0000000000400000-0x000000000044E4A4-memory.dmp

Filesize
313KB

Download
memory/2980-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2980-1-0x0000000000400000-0x000000000044E4A4-memory.dmp

Filesize
313KB

Download
memory/2980-24-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads