014614e6650f00448b18b594013d532043165806280ac04e0e1aab9c9d7d8ad3

Analysis

max time kernel
139s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 00:57

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General

Target
Client/SEBarVD.dll
Size 64KB
Sample240517-ba7q8aab65
SHA256 eacce4a99e3fe861f7b21182c09babe22961ca92d2a6382fdd11f3bda0c27068
MD5 1efd76e2aace830868932fc98f64f3ca
SHA1 25fa1e5a9d08f835995bc853345139ccec1e110e
SHA512 c2b7c93ae500f02e0d3ea14b60c864f3c19cb1c2153fd34454d9ae1188adb538398f8984304a342f11de79332be148ee76f99802d019b3ba06cad3f3a84b46c3
SSDEEP 1536:qehU7eNb2pRYqZewBTik99WHmd60IKwzg:XhZ2pCqZqmM0IK
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

bootkit persistence

Malware Config

Signatures

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\F:	rundll32.exe

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1208	1372	WerFault.exe	86

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 1372	4176	rundll32.exe	86
PID 4176 wrote to memory of 1372	4176	rundll32.exe	86
PID 4176 wrote to memory of 1372	4176	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Client\SEBarVD.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\Client\SEBarVD.dll,#1
  2⤵
  - Enumerates connected drives
  - Writes to the Master Boot Record (MBR)
  PID:1372
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1372 -s 624
    3⤵
    - Program crash
    PID:1208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1372 -ip 1372
1⤵
PID:5052

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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