gh0strat | f3295b9f27c544f155bd8f881b25372ed6c6d03ed4790bd3f5174ad44ae7c246

General

Target

JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe
Size

201KB
MD5

45945f6d9c8edd729b93aeffa3d1fc27
SHA1

90dceee6c34577e711189b732fce9ce54d9cdd58
SHA256

f3295b9f27c544f155bd8f881b25372ed6c6d03ed4790bd3f5174ad44ae7c246
SHA512

896674c57e1d9552d46323e0746410c8c5b97ef00e5044652e0ac29048d4bbcbea2b140ae2fb4bd219e29ef1b28f2379e24c18ea7f59d66bc8033d42beaa6334
SSDEEP

6144:xs4C6nW8QABTyFZqyhYPbFcTBlhHr6ndnkM0Nd:OQW88jq8YPbFcT3ySd

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral1/files/0x00080000000120ff-2.dat	family_gh0strat
behavioral1/files/0x0009000000016858-11.dat	family_gh0strat
behavioral1/memory/1988-15-0x0000000020000000-0x0000000020027000-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
2272	fxuvoovrdl

Executes dropped EXE 1 IoCs

pid	Process
2272	fxuvoovrdl

Loads dropped DLL 3 IoCs

pid	Process
1980	JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe
1980	JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe
1988	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\jhijrqljdj	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_45945f6d9c8edd729b93aeffa3d1fc27.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fxuvoovrdl
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 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 4 IoCs

pid	Process
2272	fxuvoovrdl
1988	svchost.exe
1988	svchost.exe
1988	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2272	fxuvoovrdl
Token: SeBackupPrivilege	2272	fxuvoovrdl
Token: SeBackupPrivilege	2272	fxuvoovrdl
Token: SeRestorePrivilege	2272	fxuvoovrdl
Token: SeBackupPrivilege	1988	svchost.exe
Token: SeRestorePrivilege	1988	svchost.exe
Token: SeBackupPrivilege	1988	svchost.exe
Token: SeBackupPrivilege	1988	svchost.exe
Token: SeSecurityPrivilege	1988	svchost.exe
Token: SeSecurityPrivilege	1988	svchost.exe
Token: SeBackupPrivilege	1988	svchost.exe
Token: SeBackupPrivilege	1988	svchost.exe
Token: SeSecurityPrivilege	1988	svchost.exe
Token: SeBackupPrivilege	1988	svchost.exe
Token: SeBackupPrivilege	1988	svchost.exe
Token: SeSecurityPrivilege	1988	svchost.exe
Token: SeBackupPrivilege	1988	svchost.exe
Token: SeRestorePrivilege	1988	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 2272	1980	JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe	30
PID 1980 wrote to memory of 2272	1980	JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe	30
PID 1980 wrote to memory of 2272	1980	JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe	30
PID 1980 wrote to memory of 2272	1980	JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1980
- \??\c:\users\admin\appdata\local\fxuvoovrdl
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_45945f6d9c8edd729b93aeffa3d1fc27.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2272

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:1988

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

Replay Monitor

Loading Replay Monitor...

Downloads

\??\c:\programdata\drm\%sessionname%\rkhmv.cc3

Filesize
21.0MB

MD5
fc587dfed3d1b7481a099c4461b817ac

SHA1
42b7cb4876f7ad0744474963b5ce2ed7dc63c42a

SHA256
ad4f59e7bfdd96d8e21ed1663f4f824aeceb9ba7d1fe03d645046e08db2b6021

SHA512
22d2f0356a42ad62839d579158d764e6ce670f1a608bd0b6ac7afd4e517c33410132f370681990b5a26491ee6c199110dea760a699219c60dc655413f0f82f59

Download Submit
\Users\Admin\AppData\Local\fxuvoovrdl

Filesize
21.4MB

MD5
4e4649e7eadd411d9e30f182cac9799e

SHA1
3ce6649f66d76cbebda2e7b6d9bbdbc0ee79ff9d

SHA256
c95dc1b0d5855c34af82bbbca76ad70a414baa0122d49dfc0adc0db6bb010468

SHA512
40c275dbd369502cb8ddce83e97a1710eb043862af45742b97166555c9d2a21e7ddc777699b6d8de6a342e7f61e4670dc009b094fdd9a3aeef0f3ae77666c86e

Download Submit
memory/1988-13-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/1988-15-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads