buer | 2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa

Analysis

max time kernel
40s
max time network
43s
platform
windows7_x64
resource
win7-20220414-en
submitted
24-05-2022 02:14

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General

Target

2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa.exe
Size

1.6MB
MD5

f0120868b013fa572bad5ceb3d50798d
SHA1

8ccd636f9852a713e9c0aff7f2cfba667ad95247
SHA256

2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa
SHA512

5c45d2834bfb3a57d98ff85142f4fe9675c8bbcebaf40859cd1e93b81c3a5e429531c71527b9d667ee8a2ad561a98b47980a098c69fbb564fe39b0ef6fda25d6

Score

10^/10

buer evasion loader

Malware Config

Extracted

Family

buer

http://loaadik01.pro/

http://loaadik02.pro/

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/1284-55-0x000000003F710000-0x000000003FB4F000-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\VideoBiosVersion	2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa.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	2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1284	2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1284	2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa.exe

C:\Users\Admin\AppData\Local\Temp\2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa.exe
"C:\Users\Admin\AppData\Local\Temp\2e12043576f00278e8e1207709477d00c5e750fe42ebbae261302df924fb92fa.exe"
1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:1284

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

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Downloads

memory/1284-54-0x0000000077C40000-0x0000000077DC0000-memory.dmp

Filesize
1.5MB

Download
memory/1284-55-0x000000003F710000-0x000000003FB4F000-memory.dmp

Filesize
4.2MB

Download