gh0strat | 81d464cbf3b574bfd33e3dc18644fa2946dc567654a6e83bfe23b78594bf78d7

General

Target

b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe
Size

53KB
MD5

b987ed2106872f4561d7d2edb2eb5876
SHA1

9e467466a772ba5c8134210526e0c261e6b0f707
SHA256

81d464cbf3b574bfd33e3dc18644fa2946dc567654a6e83bfe23b78594bf78d7
SHA512

47c233c2733556ac2b3f405d6f70546a5f3ae6d5fa8a193888bfda8b9b384d1f529887a620b8f4467d03c14a4b66069d636eb878730a5110a833dfc8826c0a5f
SSDEEP

1536:obeMDyISB9r77bqTP43fN3JIJkmtuUJ+XGRHpiHg9:obNDsn7ek3fUJkAJ+XmH9

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/756-4-0x0000000000400000-0x000000000041C000-memory.dmp	family_gh0strat
behavioral2/memory/756-7-0x0000000000400000-0x000000000041C000-memory.dmp	family_gh0strat
behavioral2/memory/756-8-0x0000000000400000-0x000000000041C000-memory.dmp	family_gh0strat
behavioral2/files/0x0009000000023615-12.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

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Drivers\beep.sys	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\Drivers\beep.sys	svchost.exe

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\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibilityex.dll"	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1680	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
756	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe
1680	svchost.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibilityex.dll	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 756	2852	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe	91

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	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
656	Process not Found
656	Process not Found

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 756	2852	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe	91
PID 2852 wrote to memory of 756	2852	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe	91
PID 2852 wrote to memory of 756	2852	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe	91
PID 2852 wrote to memory of 756	2852	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe	91
PID 2852 wrote to memory of 756	2852	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe	91
PID 2852 wrote to memory of 756	2852	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe	91
PID 2852 wrote to memory of 756	2852	b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\b987ed2106872f4561d7d2edb2eb5876_JaffaCakes118.exe"
  2⤵
  - Drops file in Drivers directory
  - Server Software Component: Terminal Services DLL
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:756

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Drops file in Drivers directory
- Deletes itself
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:1680

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3808,i,4174666705242427184,7333705955694532165,262144 --variations-seed-version --mojo-platform-channel-handle=4224 /prefetch:8
1⤵
PID:2104

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\dll.tmp

Filesize
95KB

MD5
bb854876df80558aa96f3e9130f2b4c2

SHA1
eabc26498e33e5d16cfbdf3c84b4587f41697cc6

SHA256
594a815e23deb18b7e3955c818598c3a00f2499faf22f3f1b443d78be8202c4b

SHA512
124e9e29095b719f6dd6b3016e4b32b229359f288b370d99f2e97e424911b9f66e7002ab4a39dbc5ef05a60f16d8cc723037f925244b67bff96a7689d035979b

Download Submit
C:\Windows\SysWOW64\install.tmp

Filesize
84B

MD5
b590f5980e75f9b48c29dc37ae319a72

SHA1
9588b6a4f2186c9bcb778e475792ee61a06a5266

SHA256
c2031ff63d6b8e6372c944fabe0150b80a764a4a95e900a001be83e7600e5aa1

SHA512
599ed02fe17f902295b5d467a3bd54ad8c2689db5f0936e6d6a47a101284e99443cbb777e099edcbf0191e369e6f7d2e282f2f9aeafedd22679954629866403e

Download Submit
memory/756-1-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/756-4-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/756-7-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/756-8-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2852-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2852-5-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

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