buer | e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f

General

Target

e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
Size

1.6MB
MD5

362073a5ce3273ad4dcfc8e6c47ec3ca
SHA1

7948c767c9d666b4fd73d7b6180c5fd78c302ac1
SHA256

e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f
SHA512

15d048fbb1ab5da75818a1ea21a1d7ed4f97b394281c677c7e7a08c1291cb514500ef3078ae358d1e1eb5c9bb294ebacf075f3b3b40631bce01c92d8f00c0377

Score

10^/10

buer evasion loader

Malware Config

Extracted

Family

buer

C2

https://loddd01.info/

https://loddd02.info/

Signatures

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

Buer Loader 7 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral2/memory/4804-132-0x000000003F4D0000-0x000000003F916000-memory.dmp	buer
behavioral2/memory/4804-133-0x000000003F4D0000-0x000000003F916000-memory.dmp	buer
behavioral2/memory/4804-134-0x000000003F4D0000-0x000000003F916000-memory.dmp	buer
behavioral2/memory/4804-138-0x000000003F4D0000-0x000000003F916000-memory.dmp	buer
behavioral2/memory/1396-142-0x000000003FCD0000-0x0000000040116000-memory.dmp	buer
behavioral2/memory/1396-143-0x000000003FCD0000-0x0000000040116000-memory.dmp	buer
behavioral2/memory/1396-144-0x000000003FCD0000-0x0000000040116000-memory.dmp	buer

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	plugin.exe

Executes dropped EXE 1 IoCs

pid	Process
1396	plugin.exe

Checks BIOS information in registry 2 TTPs 4 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	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	plugin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	plugin.exe

Identifies Wine through registry keys 2 TTPs 2 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-1-5-21-3751123196-3323558407-1869646069-1000\Software\Wine	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Wine	plugin.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4804	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
1396	plugin.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5096	3228	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4804	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
4804	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
1396	plugin.exe
1396	plugin.exe
1396	plugin.exe
1396	plugin.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4804 wrote to memory of 1396	4804	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe	87
PID 4804 wrote to memory of 1396	4804	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe	87
PID 4804 wrote to memory of 1396	4804	e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe	87
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90
PID 1396 wrote to memory of 3228	1396	plugin.exe	90

C:\Users\Admin\AppData\Local\Temp\e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe
"C:\Users\Admin\AppData\Local\Temp\e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4804
- C:\ProgramData\UBlockPlugin\plugin.exe
  C:\ProgramData\UBlockPlugin\plugin.exe "C:\Users\Admin\AppData\Local\Temp\e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f.exe" ensgJJ
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Executes dropped EXE
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1396
- - C:\Windows\SysWOW64\secinit.exe
    C:\ProgramData\UBlockPlugin\plugin.exe
    3⤵
    PID:3228
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 220
      4⤵
      Program crash
      PID:5096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3228 -ip 3228
1⤵
PID:1864

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\UBlockPlugin\plugin.exe

Filesize
1.6MB

MD5
362073a5ce3273ad4dcfc8e6c47ec3ca

SHA1
7948c767c9d666b4fd73d7b6180c5fd78c302ac1

SHA256
e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f

SHA512
15d048fbb1ab5da75818a1ea21a1d7ed4f97b394281c677c7e7a08c1291cb514500ef3078ae358d1e1eb5c9bb294ebacf075f3b3b40631bce01c92d8f00c0377

Download Submit
C:\ProgramData\UBlockPlugin\plugin.exe

Filesize
1.6MB

MD5
362073a5ce3273ad4dcfc8e6c47ec3ca

SHA1
7948c767c9d666b4fd73d7b6180c5fd78c302ac1

SHA256
e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f

SHA512
15d048fbb1ab5da75818a1ea21a1d7ed4f97b394281c677c7e7a08c1291cb514500ef3078ae358d1e1eb5c9bb294ebacf075f3b3b40631bce01c92d8f00c0377

Download Submit
memory/1396-139-0x000000003FCD0000-0x0000000040116000-memory.dmp

Filesize
4.3MB

Download
memory/1396-144-0x000000003FCD0000-0x0000000040116000-memory.dmp

Filesize
4.3MB

Download
memory/1396-143-0x000000003FCD0000-0x0000000040116000-memory.dmp

Filesize
4.3MB

Download
memory/1396-142-0x000000003FCD0000-0x0000000040116000-memory.dmp

Filesize
4.3MB

Download
memory/1396-141-0x0000000077680000-0x0000000077823000-memory.dmp

Filesize
1.6MB

Download
memory/4804-134-0x000000003F4D0000-0x000000003F916000-memory.dmp

Filesize
4.3MB

Download
memory/4804-140-0x0000000077680000-0x0000000077823000-memory.dmp

Filesize
1.6MB

Download
memory/4804-138-0x000000003F4D0000-0x000000003F916000-memory.dmp

Filesize
4.3MB

Download
memory/4804-130-0x000000003F4D0000-0x000000003F916000-memory.dmp

Filesize
4.3MB

Download
memory/4804-133-0x000000003F4D0000-0x000000003F916000-memory.dmp

Filesize
4.3MB

Download
memory/4804-132-0x000000003F4D0000-0x000000003F916000-memory.dmp

Filesize
4.3MB

Download
memory/4804-131-0x0000000077680000-0x0000000077823000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads