gh0strat | 996bb3b38dde333de4c5e92da3f5a459fdf76e431964205041141ea65b86d48a

General

Target

6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe
Size

192KB
MD5

6f0fc8a80dfd97b650a02c0b0ead60b9
SHA1

d654e296f3512b0deb4f10ca83ae67ed9028f415
SHA256

996bb3b38dde333de4c5e92da3f5a459fdf76e431964205041141ea65b86d48a
SHA512

9db721c55f079e6911e1208034a6b572878d4f1355f905a0c4f5b32eba60b39e6a63737cfb0db8d11e108ef595b901c1b6e46f77a7d499f6bce9f9a767b86905
SSDEEP

3072:ZqFRwVCnWRcdPhLg8eqxWQq/gd6qSfe+y5LiZGXE73iHPZdQ+0K6KuCPPPPPn:aqVCnWRclhLGZsd6qSfe+y5LiMXciHP0

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000015d0f-11.dat	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
2520	gjmevuhpbe

Executes dropped EXE 1 IoCs

pid	Process
2520	gjmevuhpbe

Loads dropped DLL 3 IoCs

pid	Process
1660	6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe
1660	6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe
400	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\kohpwebwbb	svchost.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\%SESSIONNAME%\dntft.cc3	gjmevuhpbe

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	6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gjmevuhpbe
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	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
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

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
400	svchost.exe
400	svchost.exe
400	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2520	gjmevuhpbe
Token: SeBackupPrivilege	2520	gjmevuhpbe
Token: SeBackupPrivilege	2520	gjmevuhpbe
Token: SeRestorePrivilege	2520	gjmevuhpbe
Token: SeBackupPrivilege	400	svchost.exe
Token: SeRestorePrivilege	400	svchost.exe
Token: SeBackupPrivilege	400	svchost.exe
Token: SeBackupPrivilege	400	svchost.exe
Token: SeSecurityPrivilege	400	svchost.exe
Token: SeSecurityPrivilege	400	svchost.exe
Token: SeBackupPrivilege	400	svchost.exe
Token: SeBackupPrivilege	400	svchost.exe
Token: SeSecurityPrivilege	400	svchost.exe
Token: SeBackupPrivilege	400	svchost.exe
Token: SeBackupPrivilege	400	svchost.exe
Token: SeSecurityPrivilege	400	svchost.exe
Token: SeBackupPrivilege	400	svchost.exe
Token: SeRestorePrivilege	400	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 2520	1660	6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe	28
PID 1660 wrote to memory of 2520	1660	6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe	28
PID 1660 wrote to memory of 2520	1660	6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe	28
PID 1660 wrote to memory of 2520	1660	6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe	28

C:\Users\Admin\AppData\Local\Temp\6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1660
- \??\c:\users\admin\appdata\local\gjmevuhpbe
  "C:\Users\Admin\AppData\Local\Temp\6f0fc8a80dfd97b650a02c0b0ead60b9_JaffaCakes118.exe"a -sc:\users\admin\appdata\local\temp\6f0fc8a80dfd97b650a02c0b0ead60b9_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2520

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:400

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:\program files (x86)\%sessionname%\dntft.cc3

Filesize
21.1MB

MD5
81022ee678ad135cc972a5c3df5b3439

SHA1
5f0664605168f39b6f73b75afe1890bff1d4d061

SHA256
67ecbbd47c77457a384c0d5cdbdab57dd74e58f9eed9895873c3ac92e7f71a4c

SHA512
4b55caf910f3f8365771300d74d545d108691edd77fbbffeeb70001aec0ac7270676d41d098f77972389a7de150da9effd7887d11f5bd508cdecc93ed48559ec

Download Submit
\Users\Admin\AppData\Local\gjmevuhpbe

Filesize
20.3MB

MD5
0384ecafbb6c8f26975b0f0ff725c380

SHA1
db1657b23f8cd3eda1e5550a83eb4d26b44e8438

SHA256
1075d1d729c068041c1aace07a265cae19f117c6352fabffd2bb3db2b3fc8a4e

SHA512
a9cb03861ec36d9b0e0fcb569030c8a535a564c810cfd383ea017136cb3c2e298607b4d268fe3303dac7ab3b3763fd2227e4e99015c1df81e94ba0e2fb3a3481

Download Submit
memory/400-13-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads