gh0strat | a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9

General

Target

a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
Size

152KB
MD5

6cd0fe95a1bb5751717bd2b3d828c515
SHA1

c88b7eafd039d9152e4d758f6e515176a3ba8c25
SHA256

a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9
SHA512

d1dd8ae6996595f6dceaf22bee88c85180e644036f40ba4d62b38073a2d8c1a9446cda660367ae1b375c65ecf4e647946974d32ae882085d26ce0e514b1d8190
SSDEEP

3072:LwF8T0PAmr9B4NgVjGt1rOikGML7oCmFZKnbmLLLUF:8FCqxB4Ng9GLjcoCmFJLXUF

Score

10^/10

gh0strat persistence rat

Malware Config

Signatures

Gh0st RAT payload 7 IoCs

Processes:

resource	yara_rule
\Windows\SysWOW64\mt6f345am.dll	family_gh0strat
\??\c:\windows\SysWOW64\mt6f345am.dll	family_gh0strat
\Windows\SysWOW64\mt6f345am.dll	family_gh0strat
\Windows\SysWOW64\mt6f345am.dll	family_gh0strat
\Windows\SysWOW64\mt6f345am.dll	family_gh0strat
\Windows\SysWOW64\mt6f345am.dll	family_gh0strat
\Windows\SysWOW64\mt6f345am.dll	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

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\opgajk23nzkljgb\Parameters\ServiceDll = "C:\\Windows\\system32\\mt6f345am.dll"	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe

Sets file execution options in registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\restrict.exe\Debugger = "services.exe"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ASDSvc.exe	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ASDSvc.exe\Debugger = "services.exe"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\restrict.exe	rundll32.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1056 cmd.exe

pid	process
1056	cmd.exe

Loads dropped DLL 6 IoCs

Processes:

a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exesvchost.exerundll32.exe

pid	process
1168	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
972	svchost.exe
1672	rundll32.exe
1672	rundll32.exe
1672	rundll32.exe
1672	rundll32.exe

Drops file in System32 directory 2 IoCs

Processes:

a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exerundll32.exe

description	ioc	process
File created	C:\Windows\SysWOW64\mt6f345am.dll	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	rundll32.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 7 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

svchost.exe

description pid process

Token: SeDebugPrivilege 972 svchost.exe

description	pid	process
Token: SeDebugPrivilege	972	svchost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exea754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe

pid	process
612	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
612	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
1168	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
1168	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exea754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exesvchost.exe

description	pid	process	target process
PID 612 wrote to memory of 1168	612	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
PID 612 wrote to memory of 1168	612	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
PID 612 wrote to memory of 1168	612	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
PID 612 wrote to memory of 1168	612	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
PID 1168 wrote to memory of 1056	1168	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe	cmd.exe
PID 1168 wrote to memory of 1056	1168	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe	cmd.exe
PID 1168 wrote to memory of 1056	1168	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe	cmd.exe
PID 1168 wrote to memory of 1056	1168	a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe	cmd.exe
PID 972 wrote to memory of 1672	972	svchost.exe	rundll32.exe
PID 972 wrote to memory of 1672	972	svchost.exe	rundll32.exe
PID 972 wrote to memory of 1672	972	svchost.exe	rundll32.exe
PID 972 wrote to memory of 1672	972	svchost.exe	rundll32.exe
PID 972 wrote to memory of 1672	972	svchost.exe	rundll32.exe
PID 972 wrote to memory of 1672	972	svchost.exe	rundll32.exe
PID 972 wrote to memory of 1672	972	svchost.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
"C:\Users\Admin\AppData\Local\Temp\a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:612

C:\Users\Admin\AppData\Local\Temp\a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe
"C:\Users\Admin\AppData\Local\Temp\a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe" TWO
2⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1168

C:\Windows\SysWOW64\cmd.exe
cmd /c del "C:\Users\Admin\AppData\Local\Temp\a754b241d602848b7c8847798694abe524adfe6bc1587a83d36756ffd71a51b9.exe" TWO
3⤵
- Deletes itself
PID:1056

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "opgajk23nzkljgb"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:972

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe c:\windows\system32\mt6f345am.dll, slexp
2⤵
- Sets file execution options in registry
- Loads dropped DLL
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1672

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\??\c:\windows\SysWOW64\mt6f345am.dll
Filesize
134KB

MD5
b35589af84a598aeb068ce083583b377

SHA1
d4df6eac6b164b51d92ccc8e0468e6d3917121b2

SHA256
fd108c82f9b204ef1ed694e62013592c38097f9b5dc91bd26d430b7a32f44a46

SHA512
066509562b8e84a2e52422a5d15d1c9ff2542b381a82d7f7aa25d36e54cc3dc9e219fcf79323116deaf778ed12a85e3c775e34b2c2cb9192ebf94abd37971e5e

Download Submit
\Windows\SysWOW64\mt6f345am.dll
Filesize
134KB

MD5
b35589af84a598aeb068ce083583b377

SHA1
d4df6eac6b164b51d92ccc8e0468e6d3917121b2

SHA256
fd108c82f9b204ef1ed694e62013592c38097f9b5dc91bd26d430b7a32f44a46

SHA512
066509562b8e84a2e52422a5d15d1c9ff2542b381a82d7f7aa25d36e54cc3dc9e219fcf79323116deaf778ed12a85e3c775e34b2c2cb9192ebf94abd37971e5e

Download Submit
\Windows\SysWOW64\mt6f345am.dll
Filesize
134KB

MD5
b35589af84a598aeb068ce083583b377

SHA1
d4df6eac6b164b51d92ccc8e0468e6d3917121b2

SHA256
fd108c82f9b204ef1ed694e62013592c38097f9b5dc91bd26d430b7a32f44a46

SHA512
066509562b8e84a2e52422a5d15d1c9ff2542b381a82d7f7aa25d36e54cc3dc9e219fcf79323116deaf778ed12a85e3c775e34b2c2cb9192ebf94abd37971e5e

Download Submit
\Windows\SysWOW64\mt6f345am.dll
Filesize
134KB

MD5
b35589af84a598aeb068ce083583b377

SHA1
d4df6eac6b164b51d92ccc8e0468e6d3917121b2

SHA256
fd108c82f9b204ef1ed694e62013592c38097f9b5dc91bd26d430b7a32f44a46

SHA512
066509562b8e84a2e52422a5d15d1c9ff2542b381a82d7f7aa25d36e54cc3dc9e219fcf79323116deaf778ed12a85e3c775e34b2c2cb9192ebf94abd37971e5e

Download Submit
\Windows\SysWOW64\mt6f345am.dll
Filesize
134KB

MD5
b35589af84a598aeb068ce083583b377

SHA1
d4df6eac6b164b51d92ccc8e0468e6d3917121b2

SHA256
fd108c82f9b204ef1ed694e62013592c38097f9b5dc91bd26d430b7a32f44a46

SHA512
066509562b8e84a2e52422a5d15d1c9ff2542b381a82d7f7aa25d36e54cc3dc9e219fcf79323116deaf778ed12a85e3c775e34b2c2cb9192ebf94abd37971e5e

Download Submit
\Windows\SysWOW64\mt6f345am.dll
Filesize
134KB

MD5
b35589af84a598aeb068ce083583b377

SHA1
d4df6eac6b164b51d92ccc8e0468e6d3917121b2

SHA256
fd108c82f9b204ef1ed694e62013592c38097f9b5dc91bd26d430b7a32f44a46

SHA512
066509562b8e84a2e52422a5d15d1c9ff2542b381a82d7f7aa25d36e54cc3dc9e219fcf79323116deaf778ed12a85e3c775e34b2c2cb9192ebf94abd37971e5e

Download Submit
\Windows\SysWOW64\mt6f345am.dll
Filesize
134KB

MD5
b35589af84a598aeb068ce083583b377

SHA1
d4df6eac6b164b51d92ccc8e0468e6d3917121b2

SHA256
fd108c82f9b204ef1ed694e62013592c38097f9b5dc91bd26d430b7a32f44a46

SHA512
066509562b8e84a2e52422a5d15d1c9ff2542b381a82d7f7aa25d36e54cc3dc9e219fcf79323116deaf778ed12a85e3c775e34b2c2cb9192ebf94abd37971e5e

Download Submit
memory/612-54-0x00000000767C1000-0x00000000767C3000-memory.dmp

Filesize
8KB

Download
memory/1056-61-0x0000000000000000-mapping.dmp

Download
memory/1168-55-0x0000000000000000-mapping.dmp

Download
memory/1672-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads