buer | ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db

General

Target

ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
Size

2.0MB
MD5

2f7f60ef423947bac5628fa46a7762ac
SHA1

dd4d6463e1b4fad95790682604cde103d457d7c3
SHA256

ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db
SHA512

8f867da39f77b30a6d405556389ec897aff4213dbf7ee16faff098c5956cdf810b6c83e59c94a25359b6e49ad4f6552724cf8a2b39383d2cd5fabf1abc032653

Score

10^/10

buer evasion loader persistence

Malware Config

Extracted

Family

buer

C2

http://loood1.top/

http://loood2.top/

Signatures

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

Buer Loader 3 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral1/memory/888-59-0x000000003FB20000-0x0000000040006000-memory.dmp	buer
behavioral1/memory/1720-79-0x000000003FB50000-0x0000000040036000-memory.dmp	buer
behavioral1/memory/1720-80-0x000000003FB50000-0x0000000040036000-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__	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	manager.exe

Executes dropped EXE 1 IoCs

pid	Process
1720	manager.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\VideoBiosVersion	manager.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	manager.exe

Deletes itself 1 IoCs

pid	Process
1720	manager.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-1-5-21-4084403625-2215941253-1760665084-1000\Software\Wine	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
Key opened	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Wine	manager.exe

Loads dropped DLL 2 IoCs

pid	Process
888	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
888	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\ActiveX Component = "C:\\Users\\Admin\\AppData\\Roaming\\ActiveX\\manager.exe"	manager.exe
Key created	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	manager.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
888	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
1720	manager.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
888	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
1720	manager.exe
1720	manager.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 888 wrote to memory of 1720	888	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe	27
PID 888 wrote to memory of 1720	888	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe	27
PID 888 wrote to memory of 1720	888	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe	27
PID 888 wrote to memory of 1720	888	ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe	27
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28
PID 1720 wrote to memory of 1580	1720	manager.exe	28

C:\Users\Admin\AppData\Local\Temp\ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe
"C:\Users\Admin\AppData\Local\Temp\ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.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:888
- C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
  C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe "C:\Users\Admin\AppData\Local\Temp\ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db.exe" ensgJJ
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Executes dropped EXE
  - Checks BIOS information in registry
  - Deletes itself
  - Identifies Wine through registry keys
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Windows\SysWOW64\secinit.exe
    C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
    3⤵
    PID:1580

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe

Filesize
2.0MB

MD5
2f7f60ef423947bac5628fa46a7762ac

SHA1
dd4d6463e1b4fad95790682604cde103d457d7c3

SHA256
ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db

SHA512
8f867da39f77b30a6d405556389ec897aff4213dbf7ee16faff098c5956cdf810b6c83e59c94a25359b6e49ad4f6552724cf8a2b39383d2cd5fabf1abc032653

Download Submit
C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe

Filesize
2.0MB

MD5
2f7f60ef423947bac5628fa46a7762ac

SHA1
dd4d6463e1b4fad95790682604cde103d457d7c3

SHA256
ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db

SHA512
8f867da39f77b30a6d405556389ec897aff4213dbf7ee16faff098c5956cdf810b6c83e59c94a25359b6e49ad4f6552724cf8a2b39383d2cd5fabf1abc032653

Download Submit
\Users\Admin\AppData\Roaming\ActiveX\manager.exe

Filesize
2.0MB

MD5
2f7f60ef423947bac5628fa46a7762ac

SHA1
dd4d6463e1b4fad95790682604cde103d457d7c3

SHA256
ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db

SHA512
8f867da39f77b30a6d405556389ec897aff4213dbf7ee16faff098c5956cdf810b6c83e59c94a25359b6e49ad4f6552724cf8a2b39383d2cd5fabf1abc032653

Download Submit
\Users\Admin\AppData\Roaming\ActiveX\manager.exe

Filesize
2.0MB

MD5
2f7f60ef423947bac5628fa46a7762ac

SHA1
dd4d6463e1b4fad95790682604cde103d457d7c3

SHA256
ca334df8e40d7a2977d979ce91cf79c225612b3bd5bada4920d3777cb08bd5db

SHA512
8f867da39f77b30a6d405556389ec897aff4213dbf7ee16faff098c5956cdf810b6c83e59c94a25359b6e49ad4f6552724cf8a2b39383d2cd5fabf1abc032653

Download Submit
memory/888-59-0x000000003FB20000-0x0000000040006000-memory.dmp

Filesize
4.9MB

Download
memory/888-54-0x0000000075BB1000-0x0000000075BB3000-memory.dmp

Filesize
8KB

Download
memory/888-60-0x00000000771F0000-0x0000000077370000-memory.dmp

Filesize
1.5MB

Download
memory/1580-74-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/1580-67-0x0000000000280000-0x0000000000766000-memory.dmp

Filesize
4.9MB

Download
memory/1580-64-0x0000000000280000-0x0000000000766000-memory.dmp

Filesize
4.9MB

Download
memory/1580-65-0x0000000000280000-0x0000000000766000-memory.dmp

Filesize
4.9MB

Download
memory/1580-69-0x0000000000280000-0x0000000000766000-memory.dmp

Filesize
4.9MB

Download
memory/1580-70-0x0000000000280000-0x0000000000766000-memory.dmp

Filesize
4.9MB

Download
memory/1580-71-0x0000000000280000-0x0000000000766000-memory.dmp

Filesize
4.9MB

Download
memory/1580-77-0x0000000000280000-0x0000000000766000-memory.dmp

Filesize
4.9MB

Download
memory/1580-73-0x0000000000280000-0x0000000000766000-memory.dmp

Filesize
4.9MB

Download
memory/1720-61-0x000000003FB50000-0x0000000040036000-memory.dmp

Filesize
4.9MB

Download
memory/1720-78-0x00000000771F0000-0x0000000077370000-memory.dmp

Filesize
1.5MB

Download
memory/1720-79-0x000000003FB50000-0x0000000040036000-memory.dmp

Filesize
4.9MB

Download
memory/1720-80-0x000000003FB50000-0x0000000040036000-memory.dmp

Filesize
4.9MB

Download
memory/1720-81-0x00000000771F0000-0x0000000077370000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads