gh0strat | 891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a

General

Target
891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
Size 4.5MB
Sample260802-gnrvtaea29
SHA256 891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a
MD5 8cb21ee2be50083f6ede5bcf9acf2e27
SHA1 49039d3ed1c44b688414a9b62d4a5d83f23524ff
SHA512 b6d809bd090f80c5167152fc4db86b2217b5008949f7416c4a09a3eab66add575ef2e22679e921661f7f334722b7167b23155a4845e7276eada2f9ab6aa0342e
SSDEEP 49152:DYREXSVMKi3abXsPNIULkmp1/j6AeXZG7wmpvGF1IP9z5WuHC4O8b8ITDnl27PLn:M2SVMK8abXsPN5kiQaZ56
TLSH
T19726C22166D4CFE1D46F1070DC66BAF6912BAE20CF554FCB6E807E1A39305D2AA3161F
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
behavioral1/files/0x0008000000024480-5.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\\240647734.bat"	look2.exe

Executes dropped EXE 3 IoCs

pid	Process
404	look2.exe
4736	HD_891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
1488	svchcst.exe

Loads dropped DLL 3 IoCs

pid	Process
404	look2.exe
1504	svchost.exe
1488	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\240647734.bat	look2.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	891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.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	look2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HD_891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4236	891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
4236	891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4236	891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
4236	891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4236 wrote to memory of 404	4236	891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe	86
PID 4236 wrote to memory of 4736	4236	891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe	89
PID 1504 wrote to memory of 1488	1504	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
"C:\Users\Admin\AppData\Local\Temp\891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4236
- 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:404
- C:\Users\Admin\AppData\Local\Temp\HD_891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
  C:\Users\Admin\AppData\Local\Temp\HD_891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4736

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:2408

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:1504
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\240647734.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1488

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k "svchcst"
1⤵
PID:2188

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_891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe

Path C:\Users\Admin\AppData\Local\Temp\HD_891f4bcac065fb0a42fb61a08d6fe07d07e5214791cdf2058acf2b714c233a3a.exe
Size 3.1MB
SHA256 f130b3789962d5c8b59aa250d6f26ad5945928f3905b32bf65aa7bd30348a794
MD5 fb083acd60fe5c3156dc25442be815e3
SHA1 61df59b8f3ebd8b3d29ca3aedc4995e23cacf6d8
SHA512 7147337d2c1006bb15cfa967c9eea6826b63c8d343f866e7454d7368d25019f39e52cf179500810834244c3ca9644d6c0df0b2c3128a9051e9ee6b428fa926f6
SSDEEP 49152:0bXsPNIULkmp1/j6AeXZG7wmpvGF1IP9z5WuHC4O8b8ITDnl27PLhp:0bXsPN5kiQaZ56
TLSH
T14BE5802126D4CFE1D46F20B0DD66BAF6512BAD24CF564FCB6D803E1A35305D2AA31A1F
MD5 SHA1 SHA512 SSDEEP TLSH

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RCX49.tmp

Path C:\Users\Admin\AppData\Local\Temp\RCX49.tmp
Size 1.4MB
SHA256 797d04adcc04ea1e65656f6303568f620f55cef55fa56317b64ed01c50cf29df
MD5 cd6001adf92520f3c1ae4c397e68edad
SHA1 c664d3356270bad2f3cd88e1e4778732ec57fd64
SHA512 82cab52061a0746a3b8d7e5550377197cd6e3fc794adebc9001cd83e4d92d16676802389292e5ddc3d692908a27e242f4925a35b1ba1f5175ce9d5783b26454c
SSDEEP 24576:DYFbkIsaPiXSVnC7Yp9zjNmZG8RRl9jyzF:DYREXSVMKi3U
TLSH
T1D065E44E6A4444BFD5603571849E7B7145A02EFC2E23CB67BA58FA07FA327C2913713A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

look2.exe

Path C:\Users\Admin\AppData\Local\Temp\look2.exe
Size 337KB
SHA256 5ea8c5455f0ebe884ed98834e78ead8b6c68814bbb1723370299fa44b88c0faa
MD5 fb66e1e31fa1e6dfb21a50ccd11e0409
SHA1 6c45a0a115ec896eb14a531a44809b2a22cf8934
SHA512 58ee149f70438296a67d5ae5cbd6cb9f5b2510a0381466b8f09eec3835be1ce7cad6903ca8fbc9273105132e85952208e78c59f776416c5449b86cc62111154b
SSDEEP 6144:8IXwWcHnNmZEvB7csAPRZyfQjCfA3lMXm4Y+5bFnWBFopJO+:8IXwDNmZEvJcscRZzjCI1O5W
TLSH
T1B674BF137FE4C8B6C59351324EE25F7AA1F6FE902E224A4333956F0CDD32691963A316
MD5 SHA1 SHA512 SSDEEP TLSH

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240647734.bat

Path C:\Windows\SysWOW64\240647734.bat
Size 51KB
SHA256 0f267b7eac66385e6654e88719707b5c45d69920fa9377b08b7f6402d05b5d32
MD5 65e95b947dd4376cb93662113fb2db6e
SHA1 9bb412971e88821ff98ded9b1eb158e94f3f7127
SHA512 f4ee9eb37c63cebdfb9406d2777120f2f39d28874ab6f1061c13beff253de671ec36a56e0b4977d188d604b4740ed1dbb098cbf7bb9296c996440afb85ed6ca6
SSDEEP 1536:1WmqoiBMNbMWtYNif/n9S91BF3frnoLvJYH5:1dWubF3n9S91BF3fboLJYH5
TLSH
T1E2333A02DE8D88F5F145177038AA33B6953ABDE036996A931F53DDA9C87B370F12D242
MD5 SHA1 SHA512 SSDEEP TLSH

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svchcst.exe

Path C:\Windows\SysWOW64\svchcst.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads