593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea

General

Target

593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe
Size

5.2MB
MD5

8b2683de299fc4cf4a3abc523a30b56b
SHA1

fbc8cd1d8b65b77824c461467a5690f26abf8f57
SHA256

593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea
SHA512

5dee67e24917c95ed6f3bad2323c1fac5f4744d531d09bf322d7c4a7640cc1eb1faf17df3dd54313802404e315bceeba49c5686c997bf6f506737b10f5cfc588
SSDEEP

98304:aXWL95fDNAhWVYrU4w35R5rhRNb0cE+SA8tNmef9ycNBg8RCkR5:aXWLNUWarFybHRWcfbQAIxf9IK

Score

8^/10

bootkit evasion persistence

Malware Config

Signatures

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1440	netsh.exe

Loads dropped DLL 1 IoCs

pid	Process
1048	593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.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	593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 1440	1048	593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe	27
PID 1048 wrote to memory of 1440	1048	593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe	27
PID 1048 wrote to memory of 1440	1048	593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe	27
PID 1048 wrote to memory of 1440	1048	593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe	27

C:\Users\Admin\AppData\Local\Temp\593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe
"C:\Users\Admin\AppData\Local\Temp\593b7ffbf695be3bc7e6d90b1bad20681231954e723ca32658d47f3288babfea.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\SysWOW64\netsh.exe
  netsh advfirewall firewall add rule name="DownloadSDKServer" dir=in action=allow program=C:\Users\Admin\AppData\Local\Temp\OnlineInstall\11.3.17.1982\SDK\DownloadSDKServer.exe enable=yes
  2⤵
  - Modifies Windows Firewall
  PID:1440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Modify Existing Service

1

T1031

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\OnlineInstall\11.3.17.1982\OnlineResource\InstallEntry.dll

Filesize
1.0MB

MD5
393e48f3b62a9051e05108ca53b2e9fe

SHA1
dbb303da91d2ffcc6630b236f55203237872ba50

SHA256
46672da984fd9fd18ca3ac36caa6ef9c73df6faa13b8e5ff9c3668e37fb23704

SHA512
00c6de11bc56744e062a44e7c80f39b960803400e501ab91a09119961e03abbc06255d95b435b9016ede44235cf3d91ad07ace18192448fbf9efc3bd2af75e02

Download Submit
memory/1048-54-0x0000000076171000-0x0000000076173000-memory.dmp

Filesize
8KB

Download

Analysis

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