gh0strat | 3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b

General

Target
3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b.exe
Size 1.4MB
Sample260803-cf43ysag22
SHA256 3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b
MD5 19815c3e1778693fce7bb5321e25959a
SHA1 3ffc05d2a480227db0b49ccf9c72cb0f62e19415
SHA512 2976aa46d564224adf4be18a3faa6a97c8881005d43b654b325e294e33c423ea9c0f9c8a8f2f9bba69c14d8f1afc7f1aaa0c532d68fd12b5b8fff33e990f5208
SSDEEP 24576:fYFbkIsaPiXSVnC7Yp9zkNmZG8RRlnmyzey7OCI3W1oB4irx7OS2IcRD:fYREXSVMDi3Uy7OCI3W1oB4irx7OS2IS
TLSH
T16365B0A3BED284F1C5551031A8A2677AE6B6AF054F11CA47E3D9FE2D7C32181913B237
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery gh0strat persistence rat

Malware Config

Signatures

Family: 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

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0005000000016b3f-6.dat	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\\240717765.bat"	look2.exe

Executes dropped EXE 2 IoCs

pid	Process
5956	look2.exe
4568	svchcst.exe

Loads dropped DLL 3 IoCs

pid	Process
5956	look2.exe
3252	svchost.exe
4568	svchcst.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\240717765.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\Acrobat Reader DC\Reader\AcroRd32.exe	3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b.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 4 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	svchcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	look2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3316	3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b.exe
3316	3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3316 wrote to memory of 5956	3316	3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b.exe	88
PID 3252 wrote to memory of 4568	3252	svchost.exe	94

C:\Users\Admin\AppData\Local\Temp\3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b.exe
"C:\Users\Admin\AppData\Local\Temp\3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3316
- 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:5956

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:1184

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:3252
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\240717765.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4568

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k "svchcst"
1⤵
PID:1520

Network

MITRE ATT&CK Enterprise v16

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

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Downloads

HD_X.dat

Path C:\Users\Admin\AppData\Local\Temp\HD_X.dat
Size 1.4MB
SHA256 3677fe5fc729f42a47ec152484d886cc7003e4d45385e20645c58ffe8f8b8f4b
MD5 19815c3e1778693fce7bb5321e25959a
SHA1 3ffc05d2a480227db0b49ccf9c72cb0f62e19415
SHA512 2976aa46d564224adf4be18a3faa6a97c8881005d43b654b325e294e33c423ea9c0f9c8a8f2f9bba69c14d8f1afc7f1aaa0c532d68fd12b5b8fff33e990f5208
SSDEEP 24576:fYFbkIsaPiXSVnC7Yp9zkNmZG8RRlnmyzey7OCI3W1oB4irx7OS2IcRD:fYREXSVMDi3Uy7OCI3W1oB4irx7OS2IS
TLSH
T16365B0A3BED284F1C5551031A8A2677AE6B6AF054F11CA47E3D9FE2D7C32181913B237
MD5 SHA1 SHA512 SSDEEP TLSH

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look2.exe

Path C:\Users\Admin\AppData\Local\Temp\look2.exe
Size 337KB
SHA256 86492ebf2d6f471a5ee92977318d099b3ea86175b5b7ae522237ae01d07a4857
MD5 2f3b6f16e33e28ad75f3fdaef2567807
SHA1 85e907340faf1edfc9210db85a04abd43d21b741
SHA512 db17e99e2df918cfc9ccbe934adfe73f0777ce1ce9f28b57a4b24ecd821efe2e0b976a634853247b77b16627d2bb3af4ba20306059d1d25ef38ffada7da3e3a4
SSDEEP 6144:8IXwWcHnNmZEvB7csAPRZyfQjCfA3lMXm4Y+5bFnWBFopJOU:8IXwDNmZEvJcscRZzjCI1O5W
TLSH
T1B474BF137FE4C8B6C59351324EE25F7AA1F6FE902E224A4333956F0CDD32691963A316
MD5 SHA1 SHA512 SSDEEP TLSH

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240717765.bat

Path C:\Windows\SysWOW64\240717765.bat
Size 51KB
SHA256 404adf22c65a83f3669d16eacbb927b6bd21170bc67f08159dd5b877ecd157ac
MD5 97174554a9f17c2d6def0b6570eedad0
SHA1 bb33becc31ae7192260dc79ac683ed83eb6f8063
SHA512 1b94360e09d143a023911592f71fca2d2c40f18b733fc717327870fc5a1af4b41534ed63ee84d912475c079949b91c43d867425f8f354755fdaf7d1b3c71e3e7
SSDEEP 1536:1WmqoiBMNbMWtYNif/n9S91BF3frnoLnJYH5:1dWubF3n9S91BF3fbobJYH5
TLSH
T1A4333A02EE8D88F5F145177038AA33B6953ABDE036996A931F53DDA5C87B370F12D242
MD5 SHA1 SHA512 SSDEEP TLSH

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svchcst.exe

Path C:\Windows\SysWOW64\svchcst.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads