gh0strat | 1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41

General

Target

1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
Size

4.5MB
MD5

e6262451faeca387ad1bcc53f5a81c58
SHA1

2ae2b10cd1205cbd0849c6f54e94bd9a7f908fe3
SHA256

1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41
SHA512

f89db1c2dc2cca8729fe63a7d3e345e569aceccbe4e8063e6180fc657f58a7ed0e7e473bb69b8c5508d26c537061af28702545324ba197ddad8924d62ae975a7
SSDEEP

49152:fYREXSVMKi3ArbXsPNIULkmp1/j6AeXZG7wmpvGF1IP9z5WuHC4O8b8ITDnl27PL:g2SVMK8ArbXsPN5kiQaZ56

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016d5a-6.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

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\svchcst\Parameters\ServiceDll = "C:\\Windows\\system32\\259426417.bat"	look2.exe

Executes dropped EXE 3 IoCs

pid	Process
824	look2.exe
2248	HD_1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
3008	svchcst.exe

Loads dropped DLL 6 IoCs

pid	Process
2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
824	look2.exe
2432	svchost.exe
2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
2432	svchost.exe
3008	svchcst.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\259426417.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

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	HD_1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	look2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 824	2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe	28
PID 2292 wrote to memory of 824	2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe	28
PID 2292 wrote to memory of 824	2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe	28
PID 2292 wrote to memory of 824	2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe	28
PID 2292 wrote to memory of 2248	2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe	31
PID 2292 wrote to memory of 2248	2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe	31
PID 2292 wrote to memory of 2248	2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe	31
PID 2292 wrote to memory of 2248	2292	1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe	31
PID 2432 wrote to memory of 3008	2432	svchost.exe	32
PID 2432 wrote to memory of 3008	2432	svchost.exe	32
PID 2432 wrote to memory of 3008	2432	svchost.exe	32
PID 2432 wrote to memory of 3008	2432	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
"C:\Users\Admin\AppData\Local\Temp\1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\look2.exe
  C:\Users\Admin\AppData\Local\Temp\\look2.exe
  2⤵
  - Server Software Component: Terminal Services DLL
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:824
- C:\Users\Admin\AppData\Local\Temp\HD_1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
  C:\Users\Admin\AppData\Local\Temp\HD_1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2248

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:1724

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\259426417.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:3008

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 Information Discovery

1

T1082

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\HD_X.dat

Filesize
1.5MB

MD5
708d07562c9838dadae075c98a8125c7

SHA1
611411254bcd0474ce4c70ab91d2b580b7d5bb12

SHA256
cbe17ad8fc895a81546750b4bcd189703831a3bc47f3105f73daa9d2ab35c53b

SHA512
e9f967db350ce5d469a4bf3406b30dc61f6dd41cc72cb9fcdbf2749cf352211d8459d377d3295c80fb059e8ef2cf12b5609cc8abebe4dc6f6be898cb8863330a

Download Submit
\Users\Admin\AppData\Local\Temp\HD_1c4a99a696d0c181ceebcc7a4679fb353a484363519d802f8ecec2100f33db41.exe

Filesize
3.1MB

MD5
fb083acd60fe5c3156dc25442be815e3

SHA1
61df59b8f3ebd8b3d29ca3aedc4995e23cacf6d8

SHA256
f130b3789962d5c8b59aa250d6f26ad5945928f3905b32bf65aa7bd30348a794

SHA512
7147337d2c1006bb15cfa967c9eea6826b63c8d343f866e7454d7368d25019f39e52cf179500810834244c3ca9644d6c0df0b2c3128a9051e9ee6b428fa926f6

Download Submit
\Users\Admin\AppData\Local\Temp\look2.exe

Filesize
337KB

MD5
fb66e1e31fa1e6dfb21a50ccd11e0409

SHA1
6c45a0a115ec896eb14a531a44809b2a22cf8934

SHA256
5ea8c5455f0ebe884ed98834e78ead8b6c68814bbb1723370299fa44b88c0faa

SHA512
58ee149f70438296a67d5ae5cbd6cb9f5b2510a0381466b8f09eec3835be1ce7cad6903ca8fbc9273105132e85952208e78c59f776416c5449b86cc62111154b

Download Submit
\Windows\SysWOW64\259426417.bat

Filesize
51KB

MD5
7aa47c8c92e23cae94a3a36bace38347

SHA1
d492741dca5cd6fcacbbaea9f0aaca7dc2bb78c4

SHA256
cb87c23948cff2bf9ceeb4344563cb68af152aad176b4a68f0857a376076b372

SHA512
7c6d61111fa30d4d7c64dc4f09897eed2ca13ba89b78d055bf3ab41609591e2c77d644b7d4ceb59e6d7fba3e42c62c4ae6b3931baab4175b93764366d62f3ccb

Download Submit
\Windows\SysWOW64\svchcst.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit

Analysis

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