b7cbbb0e37b40bb4724d1448b40f27d97ae1b37a89a7d8e01d3cfebcd7aeac14

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
28/03/2025, 04:35

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General

Target

$R0.exe
Size

3.0MB
MD5

5b6b36f69b5291b255d863f1c511a80a
SHA1

4380de3bc4830d72ca0646065dce8c15171ae65c
SHA256

ec5a3d0afe837e17cac7457492f5dbb96af5f944811bd1251eedebaa4121d23b
SHA512

d5ad4bec9390609ea23b76ed7420d438c23477de4652a54cbacbf3dbd097f5d4fa877de4d23ecb5a1b7b07f02be1ff69b5e3c5c171ce77269b7dc71d255a4257
SSDEEP

49152:wVI8DlzkhxeomPuR+ZR32msU88FCUmvjyH9/zC2AAPUo1g:N8DokugZR3H88FC5jyHIqP9m

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

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	$R0.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2552	2756	WerFault.exe	30

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$R0.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2756	$R0.exe
2756	$R0.exe
2756	$R0.exe
2756	$R0.exe
2756	$R0.exe
2756	$R0.exe
2756	$R0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2756	$R0.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2756	$R0.exe
2756	$R0.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2552	2756	$R0.exe	31
PID 2756 wrote to memory of 2552	2756	$R0.exe	31
PID 2756 wrote to memory of 2552	2756	$R0.exe	31
PID 2756 wrote to memory of 2552	2756	$R0.exe	31

C:\Users\Admin\AppData\Local\Temp\$R0.exe
"C:\Users\Admin\AppData\Local\Temp\$R0.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2756 -s 1276
  2⤵
  - Program crash
  PID:2552

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2756-4-0x0000000074C74000-0x0000000074C75000-memory.dmp

Filesize
4KB

Download
memory/2756-0-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2756-8-0x0000000074C60000-0x0000000074D70000-memory.dmp

Filesize
1.1MB

Download
memory/2756-7-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2756-9-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2756-20-0x0000000074C60000-0x0000000074D70000-memory.dmp

Filesize
1.1MB

Download