gh0strat | 8f9bf1ea83892e542a0f49c3a7f570416e215b6b0ba76335f33d03acaab0cc63

General

Target

JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe
Size

96KB
MD5

46b8c6e121b543f1f32ddf3e03e6e23c
SHA1

776d5915dcaaf8960ef8c1b197b022c9a34f512f
SHA256

8f9bf1ea83892e542a0f49c3a7f570416e215b6b0ba76335f33d03acaab0cc63
SHA512

68a9b5acc2a29f271e1ac573a4d731ca701b8b2aebc18dfdc745991674e6d15a4f5d52a9884436b58357f8f26c20af42fac812b85a3b2cf13243d6a452e5508c
SSDEEP

1536:4IFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prRBJIl0Hq3Ys:4aS4jHS8q/3nTzePCwNUh4E9RQ0K3Ys

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00090000000190c9-17.dat	family_gh0strat
behavioral1/memory/2840-18-0x0000000000400000-0x000000000044E31C-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
2840	hlnnmipywp

Executes dropped EXE 1 IoCs

pid	Process
2840	hlnnmipywp

Loads dropped DLL 2 IoCs

pid	Process
2692	JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe
1900	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 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\olsemxukpr	svchost.exe
File created	C:\Windows\SysWOW64\otgwubwidn	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_46b8c6e121b543f1f32ddf3e03e6e23c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hlnnmipywp
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
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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	svchost.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2840	hlnnmipywp
1900	svchost.exe
1900	svchost.exe
1900	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2840	hlnnmipywp
Token: SeBackupPrivilege	2840	hlnnmipywp
Token: SeBackupPrivilege	2840	hlnnmipywp
Token: SeRestorePrivilege	2840	hlnnmipywp
Token: SeBackupPrivilege	1900	svchost.exe
Token: SeRestorePrivilege	1900	svchost.exe
Token: SeBackupPrivilege	1900	svchost.exe
Token: SeBackupPrivilege	1900	svchost.exe
Token: SeSecurityPrivilege	1900	svchost.exe
Token: SeSecurityPrivilege	1900	svchost.exe
Token: SeBackupPrivilege	1900	svchost.exe
Token: SeBackupPrivilege	1900	svchost.exe
Token: SeSecurityPrivilege	1900	svchost.exe
Token: SeBackupPrivilege	1900	svchost.exe
Token: SeBackupPrivilege	1900	svchost.exe
Token: SeSecurityPrivilege	1900	svchost.exe
Token: SeBackupPrivilege	1900	svchost.exe
Token: SeRestorePrivilege	1900	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2840	2692	JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe	30
PID 2692 wrote to memory of 2840	2692	JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe	30
PID 2692 wrote to memory of 2840	2692	JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe	30
PID 2692 wrote to memory of 2840	2692	JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe	30
PID 2692 wrote to memory of 2840	2692	JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe	30
PID 2692 wrote to memory of 2840	2692	JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe	30
PID 2692 wrote to memory of 2840	2692	JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- \??\c:\users\admin\appdata\local\hlnnmipywp
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_46b8c6e121b543f1f32ddf3e03e6e23c.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2840

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:1900

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

\ProgramData\Storm\update\%SESSIONNAME%\ukxyj.cc3

Filesize
19.0MB

MD5
55a88aa5b401c57d932f9b8e7a42451f

SHA1
2f1d78954d767845a634588584edb26aa3ca1e09

SHA256
75e520e65f347480a225f8e16fa491be3fe0e9ab52730aa503f1a327eefb07cc

SHA512
ed984551f4d796dbd4466820db65c1afb2f663e72ac55b10183a01863ba4d21752cb23b88a57615e40b3e25e8af98b9e0db93e911527e74704becfaf9b53cc33

Download Submit
\Users\Admin\AppData\Local\hlnnmipywp

Filesize
20.3MB

MD5
4ee3c14c5f644507bf0817edd8bc37b3

SHA1
68b510698e508c4f2ba5a04732a0ed8cf91c7ee9

SHA256
af438c19c0a4e933534221c01a816bf9685b75f061e389c0059ea374b47b3b28

SHA512
3c536896a1c83828624386e2942e65bf85e02a22f4276708f9e5218849a5ebfc230195e166c8388edacc3fea8ef668eabb7268315a9a25321cd5c1d6a8c6c4d4

Download Submit
memory/1900-19-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2692-0-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/2692-2-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download
memory/2692-10-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/2840-12-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/2840-18-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads