dab4af84a18debe39f31ac4c8a1fa3c60bd3e58949a8da0f6dd18569ca061b87

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/03/2024, 01:54

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General

Target

b638540d1ae5650100ed8f6f8c6312fe.dll
Size

100KB
MD5

b638540d1ae5650100ed8f6f8c6312fe
SHA1

bf3e624104483d37a14410a06aa45d109dc944c5
SHA256

dab4af84a18debe39f31ac4c8a1fa3c60bd3e58949a8da0f6dd18569ca061b87
SHA512

e2c2d84dc3fbdbab117337cbbdc1cc36581b7aecdfb26d4852131c088876880b31f41e0e886ce89c36a51d17c5540f11bd87b0c1ab8881d9d1b122d1cd53509d
SSDEEP

1536:txS0jwwkS0V6iMamgECUPjrQkNzh8GQnJi+R12fJTqammN:jNMw30giNtUwYzOGQJR12A7

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

T1542.003

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2680	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2680	1736	rundll32.exe	28
PID 1736 wrote to memory of 2680	1736	rundll32.exe	28
PID 1736 wrote to memory of 2680	1736	rundll32.exe	28
PID 1736 wrote to memory of 2680	1736	rundll32.exe	28
PID 1736 wrote to memory of 2680	1736	rundll32.exe	28
PID 1736 wrote to memory of 2680	1736	rundll32.exe	28
PID 1736 wrote to memory of 2680	1736	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b638540d1ae5650100ed8f6f8c6312fe.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b638540d1ae5650100ed8f6f8c6312fe.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  PID:2680

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

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2680-0-0x0000000000120000-0x000000000012B000-memory.dmp

Filesize
44KB

Download
memory/2680-1-0x0000000010000000-0x000000001000A000-memory.dmp

Filesize
40KB

Download