gh0strat | a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066

General

Target

a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe
Size

4.6MB
MD5

f366ee0e9cdc2da818f50b7ce664cb59
SHA1

b1fab8d4da60f84ac023eca4a5155c46e767baf3
SHA256

a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066
SHA512

60c581c539a0c0c5055199b0a1db3ccd1bbc0d18f0725e3fa1103573b67288f4aebcef887344ae19b4beeb3742f232a77635b80e154509925c44dfdf1f25346b
SSDEEP

49152:GYREXSVMKi3VbXsPNIULkmp1/j6AeXZG7wmpvGF1IP9z5WuHC4O8b8ITDnl27PLn:D2SVMK8VbXsPN5kiQaZ56

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0039000000013362-6.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\\259395295.bat"	look2.exe

Executes dropped EXE 3 IoCs

pid	Process
1852	look2.exe
2808	HD_a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe
2764	svchcst.exe

Loads dropped DLL 6 IoCs

pid	Process
1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe
1852	look2.exe
2712	svchost.exe
1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe
2712	svchost.exe
2764	svchcst.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\svchcst.exe	svchost.exe
File created	C:\Windows\SysWOW64\259395295.bat	look2.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	look2.exe
File created	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	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe
1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 1852	1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe	28
PID 1740 wrote to memory of 1852	1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe	28
PID 1740 wrote to memory of 1852	1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe	28
PID 1740 wrote to memory of 1852	1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe	28
PID 1740 wrote to memory of 2808	1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe	31
PID 1740 wrote to memory of 2808	1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe	31
PID 1740 wrote to memory of 2808	1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe	31
PID 1740 wrote to memory of 2808	1740	a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe	31
PID 2712 wrote to memory of 2764	2712	svchost.exe	32
PID 2712 wrote to memory of 2764	2712	svchost.exe	32
PID 2712 wrote to memory of 2764	2712	svchost.exe	32
PID 2712 wrote to memory of 2764	2712	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe
"C:\Users\Admin\AppData\Local\Temp\a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1740
- 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
  PID:1852
- C:\Users\Admin\AppData\Local\Temp\HD_a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe
  C:\Users\Admin\AppData\Local\Temp\HD_a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.exe
  2⤵
  - Executes dropped EXE
  PID:2808

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:3000

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:2712
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\259395295.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2764

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

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
1.6MB

MD5
e41ddbd61ad6d98610b85848f2c46499

SHA1
ea230d253c562f35ef18920530faf18809acb960

SHA256
f7ffc0d86ef55160721a93c43c92b1f51cbae2dee882b9b1c5d8ece7f405ef77

SHA512
787d95b85f7dd005b1a81aed321bc40142753e81132a9f5cc1ce78db2f3b9c3a510a756968347d52077f2ff053ee3b3d86de4bb0dbae6096e5ea61c98f627bcd

Download Submit
\Users\Admin\AppData\Local\Temp\HD_a4d6af99179800af2216de278bb8b2612095a945378be677608755701646a066.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\259395295.bat

Filesize
51KB

MD5
c10dd7fc99e0e85daa87288e403de639

SHA1
1a30b6b979e52914bfd2ae259d46c05e934b952a

SHA256
73e2e6c661933459f42e513a73be296175ddc2c44f5e382d702d5ca58e53dc7d

SHA512
939e00ec3c822fd632fe408922853a4ba7acc68d188b3534ead48ac363a66a4e3c293a87d15311e0e869e39bf71d6900d6bc3393d5738f4a9dc9e23aebccf916

Download Submit
\Windows\SysWOW64\svchcst.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit

Analysis

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