gh0strat | 8943ed28c6d1d8f0e9792acfc2e47bfb21adc1d006a751a91c30fc6ba0868e22

General

Target

87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe
Size

95KB
MD5

87e5dcb02f61ef2182304357ce1bf06e
SHA1

95fd9335eb432bfcf2ec850a1e663bf1ab4901be
SHA256

8943ed28c6d1d8f0e9792acfc2e47bfb21adc1d006a751a91c30fc6ba0868e22
SHA512

6246266f88977d13f6d14e7e9360ae5c8aa6d21e63c1f526e28ad669023f49f8b56780d53b2b85f63b180e72d4d4aed028f596adc55223fb56161230485d3a84
SSDEEP

1536:X0FusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prh8sze8KZtAd:XGS4jHS8q/3nTzePCwNUh4E9h8bhtAd

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016d58-20.dat	family_gh0strat
behavioral1/memory/2884-23-0x0000000000400000-0x000000000044E37C-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

Deletes itself 1 IoCs

pid	Process
2884	gsyhmnopgq

Executes dropped EXE 1 IoCs

pid	Process
2884	gsyhmnopgq

Loads dropped DLL 3 IoCs

pid	Process
1924	87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe
1924	87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe
2812	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\snjpitrnum	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	87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gsyhmnopgq
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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	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 3 IoCs

pid	Process
2884	gsyhmnopgq
2812	svchost.exe
2812	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2884	gsyhmnopgq
Token: SeBackupPrivilege	2884	gsyhmnopgq
Token: SeBackupPrivilege	2884	gsyhmnopgq
Token: SeRestorePrivilege	2884	gsyhmnopgq
Token: SeBackupPrivilege	2812	svchost.exe
Token: SeRestorePrivilege	2812	svchost.exe
Token: SeBackupPrivilege	2812	svchost.exe
Token: SeBackupPrivilege	2812	svchost.exe
Token: SeSecurityPrivilege	2812	svchost.exe
Token: SeSecurityPrivilege	2812	svchost.exe
Token: SeBackupPrivilege	2812	svchost.exe
Token: SeBackupPrivilege	2812	svchost.exe
Token: SeSecurityPrivilege	2812	svchost.exe
Token: SeBackupPrivilege	2812	svchost.exe
Token: SeBackupPrivilege	2812	svchost.exe
Token: SeSecurityPrivilege	2812	svchost.exe
Token: SeBackupPrivilege	2812	svchost.exe
Token: SeRestorePrivilege	2812	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2884	1924	87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe	30
PID 1924 wrote to memory of 2884	1924	87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe	30
PID 1924 wrote to memory of 2884	1924	87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe	30
PID 1924 wrote to memory of 2884	1924	87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1924
- \??\c:\users\admin\appdata\local\gsyhmnopgq
  "C:\Users\Admin\AppData\Local\Temp\87e5dcb02f61ef2182304357ce1bf06e_JaffaCakes118.exe" a -sc:\users\admin\appdata\local\temp\87e5dcb02f61ef2182304357ce1bf06e_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2884

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:2812

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%\tbweh.cc3

Filesize
24.0MB

MD5
39d5eb2b0e07a5d2eac6ce632681c9c2

SHA1
a297e672aedc9721fe92ba1d9ae1c3f909186660

SHA256
d6b75ff5abe8b3cb19a4270cd44d531d37f383c76b7c426ebd92ea5acb1decd5

SHA512
cb28356f820b3918c49a6379b1f58cd83f8a0046e96c39edca0f9cac96089d036f30deb51091622f4f39b9df15bf499db5dabe1c3738563e969f20a1f166490e

Download Submit
\Users\Admin\AppData\Local\gsyhmnopgq

Filesize
23.3MB

MD5
360a5cd551c815efd1f6899596a2c357

SHA1
8a14fe967c3a28d05f0c9ee850bb6cfe3cab85ec

SHA256
f3a90d49c14e71c4da7fa173297ed1741c903a52dd974baf3031531fb3ad6a0e

SHA512
9b847f954cfdfafb4f83541d5187b212579f4e0bbec90e06dda643f5196b98345ccd795662a9e5f79946371289e14777a2aae6c19274f3dfa00cc2aabff55190

Download Submit
memory/1924-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1924-1-0x0000000000400000-0x000000000044E37C-memory.dmp

Filesize
312KB

Download
memory/1924-6-0x00000000004C0000-0x000000000050F000-memory.dmp

Filesize
316KB

Download
memory/1924-13-0x0000000000400000-0x000000000044E37C-memory.dmp

Filesize
312KB

Download
memory/2812-24-0x0000000000100000-0x0000000000101000-memory.dmp

Filesize
4KB

Download
memory/2884-17-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2884-16-0x0000000000400000-0x000000000044E37C-memory.dmp

Filesize
312KB

Download
memory/2884-23-0x0000000000400000-0x000000000044E37C-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads