b1e8ae7dee82e37105dad316071f0e87bdde2f50e713171e949d493d41443e78

Analysis

max time kernel
40s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-12-2022 07:47

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General

Target

b1e8ae7dee82e37105dad316071f0e87bdde2f50e713171e949d493d41443e78.dll
Size

120KB
MD5

b645f04f1bdf8f460a0acc8be207f16b
SHA1

958e15415f978ac1ffd1a07ca5747e811e6cfd6e
SHA256

b1e8ae7dee82e37105dad316071f0e87bdde2f50e713171e949d493d41443e78
SHA512

14a762ee444f8c5fe18a499af1ecbaa65f6d7105250c160658b3b373d69cc2a827fed64a25ca21772f25e1f4948915cc96d73c5b13c52daab0a1659a1318fa35
SSDEEP

3072:CCY+1s3fXWh7lnz90d0g85LLg0jpgRPNx3WJ1XofwsgnW:CiGfXWh7lnz90d0NvgaKvGJ1XoCn

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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 1 IoCs

Processes:

rundll32.exe

pid process

1056 rundll32.exe

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

pid	process
1056	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1488 wrote to memory of 1056	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1056	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1056	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1056	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1056	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1056	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1056	1488	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1e8ae7dee82e37105dad316071f0e87bdde2f50e713171e949d493d41443e78.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1488

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1e8ae7dee82e37105dad316071f0e87bdde2f50e713171e949d493d41443e78.dll,#1
2⤵
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:1056

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1056-54-0x0000000000000000-mapping.dmp

Download
memory/1056-55-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/1056-56-0x0000000000180000-0x000000000018A000-memory.dmp

Filesize
40KB

Download
memory/1056-58-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download
memory/1056-60-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download
memory/1056-61-0x0000000000180000-0x000000000018A000-memory.dmp

Filesize
40KB

Download