gh0strat | 0ed94dd97d1796318a996b2b365f34fb7f1a7b628bc75c8ae5f38b5a0ff620b5

General

Target

JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe
Size

95KB
MD5

57b9d4c8e561e5787c6cfcfc7aa03503
SHA1

b17af78529930a1b8ca7c0de359d9d942695f4bc
SHA256

0ed94dd97d1796318a996b2b365f34fb7f1a7b628bc75c8ae5f38b5a0ff620b5
SHA512

b98c32a4a28bc3db55e0f10a3e1b307cc3ab6728f70373f1dfbd266255adbb3a88a0b389af4bba62a37bc154c0335422b204eb98b813b08e6551fcfb090ae60d
SSDEEP

1536:GKFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prllACmZQJHcEDE:GQS4jHS8q/3nTzePCwNUh4E9PbjE

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00070000000186f8-21.dat	family_gh0strat
behavioral1/memory/2320-24-0x0000000000400000-0x000000000044E2DC-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
2320	gykbxmjbbp

Executes dropped EXE 1 IoCs

pid	Process
2320	gykbxmjbbp

Loads dropped DLL 3 IoCs

pid	Process
2460	JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe
2460	JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe
1796	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\msgxxmlpsi	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_57b9d4c8e561e5787c6cfcfc7aa03503.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gykbxmjbbp
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\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
2320	gykbxmjbbp
1796	svchost.exe
1796	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2320	gykbxmjbbp
Token: SeBackupPrivilege	2320	gykbxmjbbp
Token: SeBackupPrivilege	2320	gykbxmjbbp
Token: SeRestorePrivilege	2320	gykbxmjbbp
Token: SeBackupPrivilege	1796	svchost.exe
Token: SeRestorePrivilege	1796	svchost.exe
Token: SeBackupPrivilege	1796	svchost.exe
Token: SeBackupPrivilege	1796	svchost.exe
Token: SeSecurityPrivilege	1796	svchost.exe
Token: SeSecurityPrivilege	1796	svchost.exe
Token: SeBackupPrivilege	1796	svchost.exe
Token: SeBackupPrivilege	1796	svchost.exe
Token: SeSecurityPrivilege	1796	svchost.exe
Token: SeBackupPrivilege	1796	svchost.exe
Token: SeBackupPrivilege	1796	svchost.exe
Token: SeSecurityPrivilege	1796	svchost.exe
Token: SeBackupPrivilege	1796	svchost.exe
Token: SeRestorePrivilege	1796	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 2320	2460	JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe	31
PID 2460 wrote to memory of 2320	2460	JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe	31
PID 2460 wrote to memory of 2320	2460	JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe	31
PID 2460 wrote to memory of 2320	2460	JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2460
- \??\c:\users\admin\appdata\local\gykbxmjbbp
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_57b9d4c8e561e5787c6cfcfc7aa03503.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2320

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:1796

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%\cuglv.cc3

Filesize
23.0MB

MD5
df4f0f699fa532dfafac0c9d79f631c1

SHA1
c448d2ec6a95877b41879abe5b1ea388077ffe9d

SHA256
9557ccc0add9374201ae7f48442675efb8ea05b6721a0865b1ef4d3946edfce0

SHA512
0974075ed868d9f72aa2289f76d4d32316ef6d988f63ea195b60f1d84afd5abe6b90050fe6e8113d2f417368a139d1419fe73034526c1f06e976c053629539a7

Download Submit
\Users\Admin\AppData\Local\gykbxmjbbp

Filesize
20.1MB

MD5
b0fb96e28f33d087f914f3d93e50c6ba

SHA1
601033b630cf55217bcd33457383a8d541c88a75

SHA256
de107ef033b202af0d658393b85c3d18bde4fbc22bd0edca7135ea215c19c65f

SHA512
8f777c1879ff81b315457b20266b39b0496a168f07c2737fcdc4f53eab4406afa79cb080114f5062e3f24c829c03aff582bbb267044ad0550c7c9264da2cdead

Download Submit
memory/1796-25-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2320-16-0x0000000000400000-0x000000000044E2DC-memory.dmp

Filesize
312KB

Download
memory/2320-18-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2320-24-0x0000000000400000-0x000000000044E2DC-memory.dmp

Filesize
312KB

Download
memory/2460-0-0x0000000000400000-0x000000000044E2DC-memory.dmp

Filesize
312KB

Download
memory/2460-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2460-7-0x0000000000290000-0x00000000002DF000-memory.dmp

Filesize
316KB

Download
memory/2460-15-0x0000000000400000-0x000000000044E2DC-memory.dmp

Filesize
312KB

Download
memory/2460-13-0x0000000000290000-0x00000000002DF000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads