eeb67b4941b81ea7418c59b736967620c67ebcacce6a7d01bfa7cce654f6a7cb

Analysis

max time kernel
123s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
26-07-2023 15:07

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General

Target

NA_NA_NA_NA_8d776f62dd28ffex_JC.exe
Size

1.8MB
MD5

8d776f62dd28ff79d7553b5f5992e7b3
SHA1

0b0d82c5d27c9553429de70f270477a7a202a64f
SHA256

eeb67b4941b81ea7418c59b736967620c67ebcacce6a7d01bfa7cce654f6a7cb
SHA512

a0e873fa14a826c6a68624c6da96b6927d8c5f041b7d3322a010725f20dbf7a164a83465fcc5e54b89662ba9eaa64bec2fbebbc925114cf84afa76d9763e92e9
SSDEEP

24576:IBgfFUqV89IQ48LVZyRx5zzbCDOnkkoqbWadw4BagBze+lGB3kOOeSWosqj2fY72:I3TnkoF+lnOOexaXV8

Score

7^/10

bootkit persistence upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/3588-135-0x0000000010000000-0x000000001000B000-memory.dmp	upx
behavioral2/memory/3588-137-0x0000000010000000-0x000000001000B000-memory.dmp	upx

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
T1542.003

Processes:

NA_NA_NA_NA_8d776f62dd28ffex_JC.exe

description ioc process

File opened for modification \??\PhysicalDrive0 NA_NA_NA_NA_8d776f62dd28ffex_JC.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2240 3588 WerFault.exe NA_NA_NA_NA_8d776f62dd28ffex_JC.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	NA_NA_NA_NA_8d776f62dd28ffex_JC.exe

pid	pid_target	process	target process
2240	3588	WerFault.exe	NA_NA_NA_NA_8d776f62dd28ffex_JC.exe

C:\Users\Admin\AppData\Local\Temp\NA_NA_NA_NA_8d776f62dd28ffex_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NA_NA_NA_NA_8d776f62dd28ffex_JC.exe"
1⤵
- Writes to the Master Boot Record (MBR)
PID:3588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3588 -s 584
  2⤵
  - Program crash
  PID:2240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3588 -ip 3588
1⤵
PID:3060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3588-133-0x0000000002410000-0x0000000002538000-memory.dmp

Filesize
1.2MB

Download
memory/3588-135-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/3588-136-0x0000000002410000-0x0000000002538000-memory.dmp

Filesize
1.2MB

Download
memory/3588-137-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download