buer | 1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676

Analysis

max time kernel
42s
max time network
45s
platform
windows7_x64
resource
win7-20220414-en
submitted
23/05/2022, 23:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676.exe
Size

1.6MB
MD5

1518649e83f4c956ce199824aab84edd
SHA1

22e1c529f39cef4ea6e266323fb4a0d620be9cd1
SHA256

1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676
SHA512

595f4ebb9a78672e29b42429b8cf31055f3af2393640aa41ae2766947406005a82267eba33c99ad8f7b5c71bc4a3cf10d890981c27cbffb2f9893e2c08147ed2

Score

10^/10

buer evasion loader

Malware Config

Extracted

Family

buer

https://loddd01.info/

https://loddd02.info/

Signatures

Buer
Buer is a new modular loader first seen in August 2019.
loader buer

Buer Loader 1 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral1/memory/2020-55-0x000000003F110000-0x000000003F526000-memory.dmp	buer

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

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676.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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Wine	1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2020	1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2020	1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676.exe

C:\Users\Admin\AppData\Local\Temp\1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676.exe
"C:\Users\Admin\AppData\Local\Temp\1b1f3cf5a07eda43fab214b026b2431baec1cf9632d3c0017e8555e87cd0f676.exe"
1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2020-55-0x000000003F110000-0x000000003F526000-memory.dmp

Filesize
4.1MB

Download
memory/2020-54-0x0000000077640000-0x00000000777C0000-memory.dmp

Filesize
1.5MB

Download