gh0strat | 4a9ecb53048069adb2ab06d84f9f76cb4211aa62461268adba1a0cda64b8b669

General

Target

JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe
Size

76KB
MD5

4a741f704cba3d80999e27dee4b3b4f0
SHA1

cd878c344d91fcc659efcd1b91c22e412abc876e
SHA256

4a9ecb53048069adb2ab06d84f9f76cb4211aa62461268adba1a0cda64b8b669
SHA512

473f6973bd456ac9749cfa85bdcec1f87d537f84407f329bb900b069978ddc59b7ed5a400ce8a3ddc4e8391c997097b0238690dd6a84ccbb782ac7f41f778046
SSDEEP

1536:fcOjKiVK5RWX3H4Nyey3P9ExqNKRoAJdXO4:EOjKXRsOyeyVG/RXl

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023d2e-3.dat	family_gh0strat
behavioral2/memory/784-13-0x0000000000400000-0x0000000000427000-memory.dmp	family_gh0strat
behavioral2/memory/784-12-0x0000000010000000-0x0000000010020000-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

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ClipSrv\Parameters\ServiceDll = "C:\\Windows\\system32\\FreeRat.dll"	rundll32.exe

Loads dropped DLL 3 IoCs

pid	Process
784	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe
1900	rundll32.exe
1632	svchost.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\FreeRat.ini	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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_4a741f704cba3d80999e27dee4b3b4f0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	784	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 1900	784	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe	83
PID 784 wrote to memory of 1900	784	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe	83
PID 784 wrote to memory of 1900	784	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe	83
PID 784 wrote to memory of 3764	784	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe	95
PID 784 wrote to memory of 3764	784	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe	95
PID 784 wrote to memory of 3764	784	JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a741f704cba3d80999e27dee4b3b4f0.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:784
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\FreeRat.dll setup
  2⤵
  - Server Software Component: Terminal Services DLL
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1900
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\JAFFAC~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3764

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Server.tmp

Filesize
124KB

MD5
8cc4d3b356da0a20e22261ed7415f3f8

SHA1
8b3d95ed27258ff2b93b24f9bd7088ca9f460763

SHA256
4c9483d12d6922d9e0c3816dca6c1d947929fa75cfa867a021bc7d6dc13f4eea

SHA512
ba7ce548c73545bf163d39e2376a03721e88c35d6d0eaa4c8d8c4702fb3076c567ffc881ad59c95a61d53eeead46e08650c180247aacb6c1fcabd58371849283

Download Submit
memory/784-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/784-1-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/784-13-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/784-12-0x0000000010000000-0x0000000010020000-memory.dmp

Filesize
128KB

Download

Analysis

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