gh0strat | b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b

General

Target

b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe
Size

1.2MB
MD5

88d155d0b88571ced113631bde43becc
SHA1

40209615a825de70f53f3d1800771ff9319f460e
SHA256

b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b
SHA512

62452ecb7f438a29501135322ae1430d29119c1e5a0d630c258d09f5586a39141ed67dbeadcdee6650efd796a548b9c461433026ae8011f27cc56701655c16dd
SSDEEP

24576:zYFbkIsaPiXSVnC7Yp9zjNmZG8RRl9gyzd2jsS0:zYREXSVMKi3asS0

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016dd0-6.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\\259437259.bat"	look2.exe

Executes dropped EXE 2 IoCs

pid	Process
1736	look2.exe
2844	svchcst.exe

Loads dropped DLL 5 IoCs

pid	Process
1908	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe
1736	look2.exe
1496	svchost.exe
1496	svchost.exe
2844	svchcst.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\259437259.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	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.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	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.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	svchcst.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1908	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe
1908	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 1736	1908	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe	30
PID 1908 wrote to memory of 1736	1908	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe	30
PID 1908 wrote to memory of 1736	1908	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe	30
PID 1908 wrote to memory of 1736	1908	b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe	30
PID 1496 wrote to memory of 2844	1496	svchost.exe	33
PID 1496 wrote to memory of 2844	1496	svchost.exe	33
PID 1496 wrote to memory of 2844	1496	svchost.exe	33
PID 1496 wrote to memory of 2844	1496	svchost.exe	33

C:\Users\Admin\AppData\Local\Temp\b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe
"C:\Users\Admin\AppData\Local\Temp\b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1908
- 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:1736

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:1976

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:1496
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\259437259.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2844

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
1.2MB

MD5
88d155d0b88571ced113631bde43becc

SHA1
40209615a825de70f53f3d1800771ff9319f460e

SHA256
b8b335c6d66f6a6152e9652e1bb4c09770dab8625f49a4a0582556892622bf3b

SHA512
62452ecb7f438a29501135322ae1430d29119c1e5a0d630c258d09f5586a39141ed67dbeadcdee6650efd796a548b9c461433026ae8011f27cc56701655c16dd

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

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

Filesize
337KB

MD5
fb66e1e31fa1e6dfb21a50ccd11e0409

SHA1
6c45a0a115ec896eb14a531a44809b2a22cf8934

SHA256
5ea8c5455f0ebe884ed98834e78ead8b6c68814bbb1723370299fa44b88c0faa

SHA512
58ee149f70438296a67d5ae5cbd6cb9f5b2510a0381466b8f09eec3835be1ce7cad6903ca8fbc9273105132e85952208e78c59f776416c5449b86cc62111154b

Download Submit
\Windows\SysWOW64\259437259.bat

Filesize
51KB

MD5
9104c24ce0576f3746bf304cdcda99fa

SHA1
f04723070d0658f35da53b73da9e6cc3b43b028b

SHA256
93295aa8e149c9cd3cd3f09fe85d80360b36d64afbb52b819e976525debb0126

SHA512
458304fb2b257d8b54dee95e5edd4fdc094c1832ebe379d50db18ae6602fdbdd2d139de6485f98c519d2a35e2f5b7e97b4b1bd5573839baab837cc4fddd22b0f

Download Submit

Analysis

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