1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221

General

Target

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe
Size

10.8MB
MD5

5d0fdf7f63aa0f671f56f3625741129e
SHA1

65dfd8d91642e0b9419002d10d8fb192668bb0ae
SHA256

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221
SHA512

622067747ac492117a48d5b7e345f0277e40da4c966ba1e03791fddd31a90e8be7ba4aec4cce17ba61cace6d4b38bd2d1bcb2b334abe4216e86368fe3a0828a6
SSDEEP

196608:aGIL+ta9fpe37tmkdNl9/6zNC4wPdrj6acBF1mo0Lk0hWayZ:aGFw9BWm8NmzNFwPdP6Hxq1s

Score

9^/10

bootkit evasion persistence trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Wine	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.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

Processes:

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

description ioc process

File opened for modification \??\PhysicalDrive0 1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

pid process

1688 1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

pid process

1688 1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

pid process

1688 1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

pid	process
1688	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

pid	process
1688	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

pid	process
1688	1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe

C:\Users\Admin\AppData\Local\Temp\1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe
"C:\Users\Admin\AppData\Local\Temp\1b55be7a86a29b28efdc8319e54e2f6895e4b41ad245a54ed9aba01efbd9e221.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\pcsf.ini

Filesize
20B

MD5
681496ec06a1de0b86c016432b484d1c

SHA1
d7cd30308a7865424124b448638ab2701abacb11

SHA256
50ea92c083a43e75d9ddb9f578c18c146fe5202f208d1e3ee0c047c7b544dea8

SHA512
9626c2013693b6d8dc62a6c26115349f88085f3f90c1b8791d7ce52541fe2f62ccbfad56937d14f762d3960c5dca593f8aa7d6de04b102f5b41a638306d71de0

Download Submit
memory/1688-36-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-35-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-5-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-6-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-37-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-1-0x00000000765E0000-0x00000000765E1000-memory.dmp

Filesize
4KB

Download
memory/1688-4-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-0-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-7-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-38-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-39-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-40-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-41-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-42-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-43-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download
memory/1688-44-0x0000000000400000-0x00000000036B8000-memory.dmp

Filesize
50.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads