af54fd6700ee4d53509871816309565906ae9828d05b329f65a182f659ada83b

Analysis

max time kernel
142s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
24-07-2023 12:50

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General

Target

NA_NA_3a044011291cf6exeexe_JC.exe
Size

1.8MB
MD5

3a044011291cf6c93c6667255cf99068
SHA1

fec677f0152cc26a26da670ec229a1acd8ac5a8f
SHA256

af54fd6700ee4d53509871816309565906ae9828d05b329f65a182f659ada83b
SHA512

66c3770290903681b013b78a5a016f8d9cd85bb750d1bd8246425a3bfc0d45d6a10718aa66c17357516783bf047c45a8ce7edb4a3ee7f66bb4827a32bcaa6ea0
SSDEEP

24576:IBgfFUqV89IQ48LVZyRx5zzbCDOnkkoqbWadw4BagBzw+lGB3kOOeSWosqj2fY72:I3TnkoL+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/464-135-0x0000000010000000-0x000000001000B000-memory.dmp	upx
behavioral2/memory/464-137-0x0000000010000000-0x000000001000B000-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_3a044011291cf6exeexe_JC.exe

description ioc process

File opened for modification \??\PhysicalDrive0 NA_NA_3a044011291cf6exeexe_JC.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2396 464 WerFault.exe NA_NA_3a044011291cf6exeexe_JC.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	NA_NA_3a044011291cf6exeexe_JC.exe

pid	pid_target	process	target process
2396	464	WerFault.exe	NA_NA_3a044011291cf6exeexe_JC.exe

C:\Users\Admin\AppData\Local\Temp\NA_NA_3a044011291cf6exeexe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NA_NA_3a044011291cf6exeexe_JC.exe"
1⤵
- Writes to the Master Boot Record (MBR)
PID:464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 584
  2⤵
  - Program crash
  PID:2396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 464 -ip 464
1⤵
PID:4816

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/464-133-0x00000000024A0000-0x00000000025C8000-memory.dmp

Filesize
1.2MB

Download
memory/464-135-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/464-136-0x00000000024A0000-0x00000000025C8000-memory.dmp

Filesize
1.2MB

Download
memory/464-137-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download