gh0strat | c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd

General

Target

c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe
Size

1.2MB
MD5

55b2f37b840dc6c20e5f4a4810d3ffab
SHA1

cd37161e0d6fcdb6e40def756ea9157852a0f40c
SHA256

c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd
SHA512

ff6ab54ae080f39efac1d04cc92be69fa07195fc7671f03f2d535ea837f4731491385b2e12b133a15bc87821b55d0101aab796720651b3bc8f14b60278b7177a
SSDEEP

24576:yYFbkIsaPiXSVnC7Yp9zkNmZG8RRlngyzx:yYREXSVMDi3t

Score

10^/10

gh0strat persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

Processes:

resource	yara_rule
\Windows\SysWOW64\259403875.bat	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

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

look2.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\svchcst\Parameters\ServiceDll = "C:\\Windows\\system32\\259403875.bat"	look2.exe

Executes dropped EXE 2 IoCs

Processes:

look2.exesvchcst.exe

pid process

1448 look2.exe
2800 svchcst.exe
Loads dropped DLL 5 IoCs

Processes:

c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exelook2.exesvchost.exesvchcst.exe

pid process

1684 c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe
1448 look2.exe
2136 svchost.exe
2136 svchost.exe
2800 svchcst.exe

pid	process
1448	look2.exe
2800	svchcst.exe

Drops file in System32 directory 4 IoCs

Processes:

look2.exesvchost.exe

description	ioc	process
File created	C:\Windows\SysWOW64\259403875.bat	look2.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	look2.exe
File created	C:\Windows\SysWOW64\svchcst.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\svchcst.exe	svchost.exe

Drops file in Program Files directory 1 IoCs

Processes:

c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe	c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe

pid	process
1684	c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe
1684	c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exesvchost.exe

description	pid	process	target process
PID 1684 wrote to memory of 1448	1684	c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe	look2.exe
PID 1684 wrote to memory of 1448	1684	c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe	look2.exe
PID 1684 wrote to memory of 1448	1684	c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe	look2.exe
PID 1684 wrote to memory of 1448	1684	c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe	look2.exe
PID 2136 wrote to memory of 2800	2136	svchost.exe	svchcst.exe
PID 2136 wrote to memory of 2800	2136	svchost.exe	svchcst.exe
PID 2136 wrote to memory of 2800	2136	svchost.exe	svchcst.exe
PID 2136 wrote to memory of 2800	2136	svchost.exe	svchcst.exe

C:\Users\Admin\AppData\Local\Temp\c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe
"C:\Users\Admin\AppData\Local\Temp\c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1684

C:\Users\Admin\AppData\Local\Temp\look2.exe
C:\Users\Admin\AppData\Local\Temp\\look2.exe
2⤵
- Sets DLL path for service in the registry
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
PID:1448

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:2180

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2136

C:\Windows\SysWOW64\svchcst.exe
C:\Windows\system32\svchcst.exe "c:\windows\system32\259403875.bat",MainThread
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2800

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\HD_X.dat
Filesize
1.2MB

MD5
55b2f37b840dc6c20e5f4a4810d3ffab

SHA1
cd37161e0d6fcdb6e40def756ea9157852a0f40c

SHA256
c73a0e8281ffa34581f3b5aede52e04052c0fb90e75df72db137aa4001efbdcd

SHA512
ff6ab54ae080f39efac1d04cc92be69fa07195fc7671f03f2d535ea837f4731491385b2e12b133a15bc87821b55d0101aab796720651b3bc8f14b60278b7177a

Download Submit
\Users\Admin\AppData\Local\Temp\look2.exe
Filesize
337KB

MD5
2f3b6f16e33e28ad75f3fdaef2567807

SHA1
85e907340faf1edfc9210db85a04abd43d21b741

SHA256
86492ebf2d6f471a5ee92977318d099b3ea86175b5b7ae522237ae01d07a4857

SHA512
db17e99e2df918cfc9ccbe934adfe73f0777ce1ce9f28b57a4b24ecd821efe2e0b976a634853247b77b16627d2bb3af4ba20306059d1d25ef38ffada7da3e3a4

Download Submit
\Windows\SysWOW64\259403875.bat
Filesize
51KB

MD5
6265a8e134cabeb11228acf9cf522b94

SHA1
aa07527b90aa13b289a98aec4f53e66feb38e4db

SHA256
15b43b2fddf742751402204e1a2fd660e65f1a74f38829f937e432b17a4ce499

SHA512
96376b7c08edbf53fe2ef4dcdbeb85340379c218fb83d0bb929f720c6b1b40db6d9b08c292b6b3b26d2d26708c99271e4405eff75064abe760f5850e7afa2807

Download Submit
\Windows\SysWOW64\svchcst.exe
Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads