15871c610c9beb6400cbd4f544362202a8d8dd826ec95347f63e34ad002c1281

Analysis

max time kernel
4s
max time network
35s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
05-12-2022 21:51

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General

Target

15871c610c9beb6400cbd4f544362202a8d8dd826ec95347f63e34ad002c1281.dll
Size

1.2MB
MD5

1190a82a7c5cc1938ccb061332e33da0
SHA1

05803d07b4e12fa0ee78edd7f0e6edd1aa9281c3
SHA256

15871c610c9beb6400cbd4f544362202a8d8dd826ec95347f63e34ad002c1281
SHA512

55a87a3027623b3264397d8e620251012d18a8a8ed7370fb3a3a989db4609e835b732b9ae65597a025d02293bd643754e224e5cbd56db487c44b5639e1f7dd90
SSDEEP

24576:53Hgz8MmGQcoAnhFGs7G3iSL8jzR9XG3r:RHjcrFGNySG9Xm

Score

6^/10

bootkit persistence

Malware Config

Signatures

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

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PhysicalDrive0 rundll32.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

556 rundll32.exe
556 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 556 rundll32.exe
Token: SeShutdownPrivilege 556 rundll32.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

rundll32.exe

pid process

556 rundll32.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

pid	process
556	rundll32.exe
556	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	556	rundll32.exe
Token: SeShutdownPrivilege	556	rundll32.exe

pid	process
556	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1188 wrote to memory of 556	1188	rundll32.exe	rundll32.exe
PID 1188 wrote to memory of 556	1188	rundll32.exe	rundll32.exe
PID 1188 wrote to memory of 556	1188	rundll32.exe	rundll32.exe
PID 1188 wrote to memory of 556	1188	rundll32.exe	rundll32.exe
PID 1188 wrote to memory of 556	1188	rundll32.exe	rundll32.exe
PID 1188 wrote to memory of 556	1188	rundll32.exe	rundll32.exe
PID 1188 wrote to memory of 556	1188	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\15871c610c9beb6400cbd4f544362202a8d8dd826ec95347f63e34ad002c1281.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1188

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\15871c610c9beb6400cbd4f544362202a8d8dd826ec95347f63e34ad002c1281.dll,#1
2⤵
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:556

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/556-54-0x0000000000000000-mapping.dmp

Download
memory/556-55-0x0000000074FD1000-0x0000000074FD3000-memory.dmp

Filesize
8KB

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