30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da

Analysis

max time kernel
183s
max time network
198s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 13:27

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General

Target

30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da.exe
Size

175KB
MD5

5dda7db211595acb8a3148da9dea41d2
SHA1

32ee0069b1e910d9878afdd1e32a917c17f82191
SHA256

30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da
SHA512

42accba7725ce4239450c06aa252e4eb754b525d68f9d082b35f2b37ce0564fceff3a9851f4edbdf30f005e32f4a3eb9b9ae11b1b41cad7e6cf4e57dc68da278
SSDEEP

3072:EvzFymu53FGaH4ue4MLajTYESE1mXR1dbx0hiCghj0/Kf6xkVYF:ELQ53FGaH4a7jkEV1mXxbx0hiCghY/Kc

Score

8^/10

bootkit persistence

Malware Config

Signatures

Drops file in Drivers directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\etc\BVhZeQF5eb.ini	30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da.exe
File created	C:\Windows\system32\drivers\etc\b8ynDDpp.dll	30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da.exe
File created	C:\Windows\system32\drivers\etc\BVhZeQF5eb.del	30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da.exe

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

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SRAT_Service\Parameters\ServiceDLL = "C:\\Windows\\system32\\drivers\\etc\\b8ynDDpp.dll"	30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da.exe

Deletes itself 1 IoCs

pid	Process
1308	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
1308	svchost.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1308	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1232	30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1308	svchost.exe
1308	svchost.exe

C:\Users\Admin\AppData\Local\Temp\30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da.exe
"C:\Users\Admin\AppData\Local\Temp\30c42d3a6eea04a9e841b8f3da7a81b478a08415a8ef7e97c29f4ae793a0c8da.exe"
1⤵
- Drops file in Drivers directory
- Sets DLL path for service in the registry
- Suspicious use of AdjustPrivilegeToken
PID:1232

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Deletes itself
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1308

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\system32\drivers\etc\BVhZeQF5eb.del

Filesize
104B

MD5
92fbb59bf40a4069ba5c1ac1b1938dc5

SHA1
4d84878c297bb87809fc24546cfa87b0004cee7e

SHA256
07258ecfa498923b0f2b41277f025e1061fef75e01ab076747a4d0219ef5702b

SHA512
392298bbbb92d6f34df28412887e0ea344346ab414c3e8229c3ab9488183bf76768da3a7abc2b9efd4dbcd1be29ae8755db45ee2420652a61c2b58e3bbbd8cc3

Download Submit
\??\c:\windows\system32\drivers\etc\b8ynddpp.dll

Filesize
144KB

MD5
d5d57f6c25a9b07669e4d4321b8f5466

SHA1
b5801ce3cf8a83360d4ff32072bb535abee8125d

SHA256
ca5a4a081388ec480fcbba78443f8374813e0b61e59e7ef8d27d86702010e43a

SHA512
0c051aefe24cbbc8d3519d76da1be4683bf3e4cc82510fbb83c2de105f9036e08727edd8956b86fa608bb98c7ae598b09f33e77f60d24838f73cbca061a2ce65

Download Submit
\Windows\System32\drivers\etc\b8ynDDpp.dll

Filesize
144KB

MD5
d5d57f6c25a9b07669e4d4321b8f5466

SHA1
b5801ce3cf8a83360d4ff32072bb535abee8125d

SHA256
ca5a4a081388ec480fcbba78443f8374813e0b61e59e7ef8d27d86702010e43a

SHA512
0c051aefe24cbbc8d3519d76da1be4683bf3e4cc82510fbb83c2de105f9036e08727edd8956b86fa608bb98c7ae598b09f33e77f60d24838f73cbca061a2ce65

Download Submit
memory/1308-56-0x00000000001C0000-0x00000000001E8000-memory.dmp

Filesize
160KB

Download
memory/1308-57-0x00000000756B1000-0x00000000756B3000-memory.dmp

Filesize
8KB

Download