buer | 0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7

General

Target

0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe
Size

1.7MB
MD5

0e10383cde3d4db3e32da210dbcd6efe
SHA1

56bcc64641acab38eff5cc62dbd7a9e1905cb51e
SHA256

0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7
SHA512

4236783d09d4b8625501c622e158d604413704a6638d2b13d4ad5c8d79d02444a41515cb24fddf5dc42607da608064a736be8cc1f725ebbdfa3f0c18f5f24305

Score

10^/10

buer evasion loader persistence

Malware Config

Extracted

Family

buer

C2

http://lodddd01.info/

http://lodddd02.info/

cook5**gj____+,)diaj*

cook5**gj____+-)diaj*

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\ProgramData\\UBlockPlugin\\plugin.exe\""	plugin.exe

Buer Loader 4 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral2/memory/4908-135-0x000000003F8F0000-0x000000003FD45000-memory.dmp	buer
behavioral2/memory/740-139-0x000000003F8C0000-0x000000003FD15000-memory.dmp	buer
behavioral2/memory/740-141-0x000000003F8C0000-0x000000003FD15000-memory.dmp	buer
behavioral2/memory/740-143-0x000000003F8C0000-0x000000003FD15000-memory.dmp	buer

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

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Executes dropped EXE 1 IoCs

pid	Process
740	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	plugin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	plugin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.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	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.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
4908	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe
740	plugin.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1092	3440	WerFault.exe	82
1672	740	WerFault.exe	81

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4908	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe
4908	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe
740	plugin.exe
740	plugin.exe
740	plugin.exe
740	plugin.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4908 wrote to memory of 740	4908	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe	81
PID 4908 wrote to memory of 740	4908	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe	81
PID 4908 wrote to memory of 740	4908	0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe	81
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82
PID 740 wrote to memory of 3440	740	plugin.exe	82

C:\Users\Admin\AppData\Local\Temp\0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe
"C:\Users\Admin\AppData\Local\Temp\0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe"
1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4908
- C:\ProgramData\UBlockPlugin\plugin.exe
  C:\ProgramData\UBlockPlugin\plugin.exe "C:\Users\Admin\AppData\Local\Temp\0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7.exe" ensgJJ
  2⤵
  - Modifies WinLogon for persistence
  - 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:740
- - C:\Windows\SysWOW64\secinit.exe
    C:\ProgramData\UBlockPlugin\plugin.exe
    3⤵
    PID:3440
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3440 -s 220
      4⤵
      Program crash
      PID:1092
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 740 -s 1176
    3⤵
    - Program crash
    PID:1672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3440 -ip 3440
1⤵
PID:952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 740 -ip 740
1⤵
PID:1800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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
1.7MB

MD5
0e10383cde3d4db3e32da210dbcd6efe

SHA1
56bcc64641acab38eff5cc62dbd7a9e1905cb51e

SHA256
0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7

SHA512
4236783d09d4b8625501c622e158d604413704a6638d2b13d4ad5c8d79d02444a41515cb24fddf5dc42607da608064a736be8cc1f725ebbdfa3f0c18f5f24305

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

Filesize
1.7MB

MD5
0e10383cde3d4db3e32da210dbcd6efe

SHA1
56bcc64641acab38eff5cc62dbd7a9e1905cb51e

SHA256
0a68601ec38d12ded4ece0145bda18fdae735bb1126fd8d41e04a09770cc10a7

SHA512
4236783d09d4b8625501c622e158d604413704a6638d2b13d4ad5c8d79d02444a41515cb24fddf5dc42607da608064a736be8cc1f725ebbdfa3f0c18f5f24305

Download Submit
memory/740-139-0x000000003F8C0000-0x000000003FD15000-memory.dmp

Filesize
4.3MB

Download
memory/740-138-0x0000000077780000-0x0000000077923000-memory.dmp

Filesize
1.6MB

Download
memory/740-140-0x0000000077780000-0x0000000077923000-memory.dmp

Filesize
1.6MB

Download
memory/740-141-0x000000003F8C0000-0x000000003FD15000-memory.dmp

Filesize
4.3MB

Download
memory/740-142-0x0000000077780000-0x0000000077923000-memory.dmp

Filesize
1.6MB

Download
memory/740-143-0x000000003F8C0000-0x000000003FD15000-memory.dmp

Filesize
4.3MB

Download
memory/4908-131-0x0000000077780000-0x0000000077923000-memory.dmp

Filesize
1.6MB

Download
memory/4908-135-0x000000003F8F0000-0x000000003FD45000-memory.dmp

Filesize
4.3MB

Download
memory/4908-136-0x0000000077780000-0x0000000077923000-memory.dmp

Filesize
1.6MB

Download
memory/4908-130-0x000000003F8F0000-0x000000003FD45000-memory.dmp

Filesize
4.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads