buer | d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511

General

Target

d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe
Size

1.6MB
MD5

27eff943a9a321407709d92ef5f99667
SHA1

1c6a9de56ae6db79d1ade91876baeda42c0d3819
SHA256

d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511
SHA512

f43a9781e3148105682237897682dd8f289fb4cbb1f21e4e329ece0d04ee0f903a6f664cd7fa5a3d9ccdcbfe96ba37e5d79e909fc84b12ba426dcf03024590f3

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/4576-132-0x000000003FAE0000-0x000000003FF19000-memory.dmp	buer
behavioral2/memory/4576-133-0x000000003FAE0000-0x000000003FF19000-memory.dmp	buer
behavioral2/memory/4576-134-0x000000003FAE0000-0x000000003FF19000-memory.dmp	buer
behavioral2/memory/4576-138-0x000000003FAE0000-0x000000003FF19000-memory.dmp	buer
behavioral2/memory/3312-142-0x000000003FDB0000-0x00000000401E9000-memory.dmp	buer
behavioral2/memory/3312-143-0x000000003FDB0000-0x00000000401E9000-memory.dmp	buer
behavioral2/memory/3312-144-0x000000003FDB0000-0x00000000401E9000-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__	plugin.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe

Executes dropped EXE 1 IoCs

pid	Process
3312	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	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.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-1-5-21-2372564722-193526734-2636556182-1000\Software\Wine	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Wine	plugin.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4576	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe
3312	plugin.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
452	2572	WerFault.exe	85

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4576	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe
4576	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe
3312	plugin.exe
3312	plugin.exe
3312	plugin.exe
3312	plugin.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4576 wrote to memory of 3312	4576	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe	84
PID 4576 wrote to memory of 3312	4576	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe	84
PID 4576 wrote to memory of 3312	4576	d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe	84
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85
PID 3312 wrote to memory of 2572	3312	plugin.exe	85

C:\Users\Admin\AppData\Local\Temp\d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.exe
"C:\Users\Admin\AppData\Local\Temp\d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.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:4576
- C:\ProgramData\UBlockPlugin\plugin.exe
  C:\ProgramData\UBlockPlugin\plugin.exe "C:\Users\Admin\AppData\Local\Temp\d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511.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:3312
- - C:\Windows\SysWOW64\secinit.exe
    C:\ProgramData\UBlockPlugin\plugin.exe
    3⤵
    PID:2572
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2572 -s 220
      4⤵
      Program crash
      PID:452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 2572 -ip 2572
1⤵
PID:4156

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\UBlockPlugin\plugin.exe

Filesize
1.6MB

MD5
27eff943a9a321407709d92ef5f99667

SHA1
1c6a9de56ae6db79d1ade91876baeda42c0d3819

SHA256
d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511

SHA512
f43a9781e3148105682237897682dd8f289fb4cbb1f21e4e329ece0d04ee0f903a6f664cd7fa5a3d9ccdcbfe96ba37e5d79e909fc84b12ba426dcf03024590f3

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

Filesize
1.6MB

MD5
27eff943a9a321407709d92ef5f99667

SHA1
1c6a9de56ae6db79d1ade91876baeda42c0d3819

SHA256
d2930279448fd7ae1432dfe5d1de37c9e5c924e5466ab49763e8de671b24c511

SHA512
f43a9781e3148105682237897682dd8f289fb4cbb1f21e4e329ece0d04ee0f903a6f664cd7fa5a3d9ccdcbfe96ba37e5d79e909fc84b12ba426dcf03024590f3

Download Submit
memory/3312-142-0x000000003FDB0000-0x00000000401E9000-memory.dmp

Filesize
4.2MB

Download
memory/3312-140-0x000000003FDB0000-0x00000000401E9000-memory.dmp

Filesize
4.2MB

Download
memory/3312-141-0x0000000076F40000-0x00000000770E3000-memory.dmp

Filesize
1.6MB

Download
memory/3312-143-0x000000003FDB0000-0x00000000401E9000-memory.dmp

Filesize
4.2MB

Download
memory/3312-144-0x000000003FDB0000-0x00000000401E9000-memory.dmp

Filesize
4.2MB

Download
memory/4576-134-0x000000003FAE0000-0x000000003FF19000-memory.dmp

Filesize
4.2MB

Download
memory/4576-133-0x000000003FAE0000-0x000000003FF19000-memory.dmp

Filesize
4.2MB

Download
memory/4576-138-0x000000003FAE0000-0x000000003FF19000-memory.dmp

Filesize
4.2MB

Download
memory/4576-132-0x000000003FAE0000-0x000000003FF19000-memory.dmp

Filesize
4.2MB

Download
memory/4576-139-0x0000000076F40000-0x00000000770E3000-memory.dmp

Filesize
1.6MB

Download
memory/4576-130-0x000000003FAE0000-0x000000003FF19000-memory.dmp

Filesize
4.2MB

Download
memory/4576-131-0x0000000076F40000-0x00000000770E3000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads