buer | e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f

General

Target

362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
Size

1.6MB
MD5

362073a5ce3273ad4dcfc8e6c47ec3ca
SHA1

7948c767c9d666b4fd73d7b6180c5fd78c302ac1
SHA256

e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f
SHA512

15d048fbb1ab5da75818a1ea21a1d7ed4f97b394281c677c7e7a08c1291cb514500ef3078ae358d1e1eb5c9bb294ebacf075f3b3b40631bce01c92d8f00c0377
SSDEEP

49152:niHexSQINK8mkzI+xNPfCH+CjIcZWzjR:niHfpNNMkpqHbIZ

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 19 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral1/memory/2868-3-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-4-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-5-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-6-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-7-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-8-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-9-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-10-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-11-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-12-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/2868-22-0x000000003F770000-0x000000003FBB6000-memory.dmp	buer
behavioral1/memory/1532-25-0x000000003F1D0000-0x000000003F616000-memory.dmp	buer
behavioral1/memory/1532-26-0x000000003F1D0000-0x000000003F616000-memory.dmp	buer
behavioral1/memory/1532-28-0x000000003F1D0000-0x000000003F616000-memory.dmp	buer
behavioral1/memory/1532-27-0x000000003F1D0000-0x000000003F616000-memory.dmp	buer
behavioral1/memory/1532-29-0x000000003F1D0000-0x000000003F616000-memory.dmp	buer
behavioral1/memory/1532-30-0x000000003F1D0000-0x000000003F616000-memory.dmp	buer
behavioral1/memory/1532-31-0x000000003F1D0000-0x000000003F616000-memory.dmp	buer
behavioral1/memory/1532-32-0x000000003F1D0000-0x000000003F616000-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__	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	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	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	plugin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	plugin.exe

Executes dropped EXE 1 IoCs

pid	Process
1532	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-1-5-21-2721934792-624042501-2768869379-1000\Software\Wine	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Wine	plugin.exe

Loads dropped DLL 2 IoCs

pid	Process
2868	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
2868	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2868	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
1532	plugin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2868	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
1532	plugin.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 1532	2868	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe	30
PID 2868 wrote to memory of 1532	2868	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe	30
PID 2868 wrote to memory of 1532	2868	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe	30
PID 2868 wrote to memory of 1532	2868	362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2868
- C:\ProgramData\UBlockPlugin\plugin.exe
  C:\ProgramData\UBlockPlugin\plugin.exe "C:\Users\Admin\AppData\Local\Temp\362073a5ce3273ad4dcfc8e6c47ec3ca_JaffaCakes118.exe" ensgJJ
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:1532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

\ProgramData\UBlockPlugin\plugin.exe

Filesize
1.6MB

MD5
362073a5ce3273ad4dcfc8e6c47ec3ca

SHA1
7948c767c9d666b4fd73d7b6180c5fd78c302ac1

SHA256
e569998290b8e57cbfeea4f35425d6c79e4a6cf1bf56b316c01d8f91d269396f

SHA512
15d048fbb1ab5da75818a1ea21a1d7ed4f97b394281c677c7e7a08c1291cb514500ef3078ae358d1e1eb5c9bb294ebacf075f3b3b40631bce01c92d8f00c0377

Download Submit
memory/1532-32-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/1532-31-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/1532-30-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/1532-29-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/1532-27-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/1532-28-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/1532-26-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/1532-25-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/1532-24-0x000000003F1D1000-0x000000003F1D5000-memory.dmp

Filesize
16KB

Download
memory/1532-23-0x000000003F1D0000-0x000000003F616000-memory.dmp

Filesize
4.3MB

Download
memory/2868-6-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-7-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-11-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-22-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-10-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-9-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-8-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-12-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-0-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-5-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-4-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-3-0x000000003F770000-0x000000003FBB6000-memory.dmp

Filesize
4.3MB

Download
memory/2868-2-0x000000003F771000-0x000000003F775000-memory.dmp

Filesize
16KB

Download
memory/2868-1-0x0000000077D70000-0x0000000077D72000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads