gh0strat | a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7

General

Target

a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
Size

4.6MB
MD5

5cd0d4b25a816e637fdaa032f1c9d1b8
SHA1

a8b2ed880498590ad911e4dbf55494ab71849d30
SHA256

a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7
SHA512

d81ca2c46364247d875cb413018ccb1b8893b88c2fb912f631106b58b1f6a9308c045fb8c57c098274f73b6774a9d4c45ed829a39f1102f66bccea66846ac3ee
SSDEEP

49152:qYREXSVMKi36sSxbXsPNIULkmp1/j6AeXZG7wmpvGF1IP9z5WuHC4O8b8ITDnl2X:f2SVMK86sSxbXsPN5kiQaZ56

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x000700000001878d-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
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\svchcst\Parameters\ServiceDll = "C:\\Windows\\system32\\259457056.bat"	look2.exe

Executes dropped EXE 3 IoCs

pid	Process
2868	look2.exe
2324	HD_a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
2588	svchcst.exe

Loads dropped DLL 6 IoCs

pid	Process
2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
2868	look2.exe
2964	svchost.exe
2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
2964	svchost.exe
2588	svchcst.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
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
File created	C:\Windows\SysWOW64\259457056.bat	look2.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	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.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	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	look2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HD_a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchcst.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2828 wrote to memory of 2868	2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe	30
PID 2828 wrote to memory of 2868	2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe	30
PID 2828 wrote to memory of 2868	2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe	30
PID 2828 wrote to memory of 2868	2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe	30
PID 2828 wrote to memory of 2324	2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe	33
PID 2828 wrote to memory of 2324	2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe	33
PID 2828 wrote to memory of 2324	2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe	33
PID 2828 wrote to memory of 2324	2828	a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe	33
PID 2964 wrote to memory of 2588	2964	svchost.exe	34
PID 2964 wrote to memory of 2588	2964	svchost.exe	34
PID 2964 wrote to memory of 2588	2964	svchost.exe	34
PID 2964 wrote to memory of 2588	2964	svchost.exe	34

C:\Users\Admin\AppData\Local\Temp\a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
"C:\Users\Admin\AppData\Local\Temp\a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.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:2828
- 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:2868
- C:\Users\Admin\AppData\Local\Temp\HD_a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
  C:\Users\Admin\AppData\Local\Temp\HD_a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2324

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:2144

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:2964
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\259457056.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2588

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
8ef8a99ecbc1e0d34460d4cbc0c1443c

SHA1
8c7b3b94a9e5e93c423f40c948d674430d4b329b

SHA256
14a2ae8ec0c87b1897e32aee4f86814ca4fcd300d6799aa6e1c710d555b66de5

SHA512
6749f89e45a7301a95ad884aa480599a23c1a4d203d21a5127814771687faa615635757fa5a905b83182ebaef1d9636767d792f393e209a90023a030b92f32be

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

Filesize
337KB

MD5
fb66e1e31fa1e6dfb21a50ccd11e0409

SHA1
6c45a0a115ec896eb14a531a44809b2a22cf8934

SHA256
5ea8c5455f0ebe884ed98834e78ead8b6c68814bbb1723370299fa44b88c0faa

SHA512
58ee149f70438296a67d5ae5cbd6cb9f5b2510a0381466b8f09eec3835be1ce7cad6903ca8fbc9273105132e85952208e78c59f776416c5449b86cc62111154b

Download Submit
C:\Windows\SysWOW64\svchcst.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Users\Admin\AppData\Local\Temp\HD_a82031094dad595bbb895b19201b4cdbd2cd8bcc702f3d6ad322aeb0c739c3c7.exe

Filesize
3.1MB

MD5
fb083acd60fe5c3156dc25442be815e3

SHA1
61df59b8f3ebd8b3d29ca3aedc4995e23cacf6d8

SHA256
f130b3789962d5c8b59aa250d6f26ad5945928f3905b32bf65aa7bd30348a794

SHA512
7147337d2c1006bb15cfa967c9eea6826b63c8d343f866e7454d7368d25019f39e52cf179500810834244c3ca9644d6c0df0b2c3128a9051e9ee6b428fa926f6

Download Submit
\Windows\SysWOW64\259457056.bat

Filesize
51KB

MD5
6fe16e4ef92fd4c88234818992672d60

SHA1
95fac901e273ebff9b6c82767412c07b512ba382

SHA256
60169f93d538b7c2b95304fba882c576fe2ee7d6b00927a3b0aafa167f674b37

SHA512
d5a701e3181dc3596d686c995ee070c4ca346cdea3fcb64e495d193be8a9c09f1c77268daf9e630017b78eec5cbc51483f3eb5ec46b247e6119f07f3d3b36148

Download Submit

Analysis

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