buer | 1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a

General

Target

1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
Size

2.0MB
MD5

907c5f834992bd50e09e7722c0cce2e3
SHA1

ba09efb22778621d40b624fb423884312e88428c
SHA256

1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a
SHA512

519492e11ee14bce94966d7697094baf4b8135ca587dad061c7f3f13f6561aa4783fe7411dffac27de1c0d3add2a1311d48b2b1d4cef132d69096b841c76eb05

Score

10^/10

buer evasion loader persistence

Malware Config

Extracted

Family

buer

C2

http://loood1.top/

http://loood2.top/

eqqm7,,illla.+qlm,

eqqm7,,illla/+qlm,

Signatures

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

Buer Loader 4 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral2/memory/3864-134-0x000000003FAD0000-0x000000003FFA6000-memory.dmp	buer
behavioral2/memory/4824-139-0x000000003FC50000-0x0000000040126000-memory.dmp	buer
behavioral2/memory/4824-142-0x000000003FC50000-0x0000000040126000-memory.dmp	buer
behavioral2/memory/4824-143-0x000000003FC50000-0x0000000040126000-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__	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	manager.exe

Executes dropped EXE 1 IoCs

pid	Process
4824	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\SystemBiosVersion	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	manager.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	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-1-5-21-2632097139-1792035885-811742494-1000\Software\Wine	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Wine	manager.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	manager.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ActiveX Component = "C:\\Users\\Admin\\AppData\\Roaming\\ActiveX\\manager.exe"	manager.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3864	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
4824	manager.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
544	4152	WerFault.exe	78
4864	4152	WerFault.exe	78

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3864	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
3864	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
4824	manager.exe
4824	manager.exe
4824	manager.exe
4824	manager.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3864 wrote to memory of 4824	3864	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe	77
PID 3864 wrote to memory of 4824	3864	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe	77
PID 3864 wrote to memory of 4824	3864	1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe	77
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78
PID 4824 wrote to memory of 4152	4824	manager.exe	78

C:\Users\Admin\AppData\Local\Temp\1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.exe
"C:\Users\Admin\AppData\Local\Temp\1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.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:3864
- C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
  C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe "C:\Users\Admin\AppData\Local\Temp\1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a.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
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4824
- - C:\Windows\SysWOW64\secinit.exe
    C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
    3⤵
    PID:4152
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 272
      4⤵
      Program crash
      PID:544
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 316
      4⤵
      Program crash
      PID:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4152 -ip 4152
1⤵
PID:2352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4152 -ip 4152
1⤵
PID:224

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
907c5f834992bd50e09e7722c0cce2e3

SHA1
ba09efb22778621d40b624fb423884312e88428c

SHA256
1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a

SHA512
519492e11ee14bce94966d7697094baf4b8135ca587dad061c7f3f13f6561aa4783fe7411dffac27de1c0d3add2a1311d48b2b1d4cef132d69096b841c76eb05

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

Filesize
2.0MB

MD5
907c5f834992bd50e09e7722c0cce2e3

SHA1
ba09efb22778621d40b624fb423884312e88428c

SHA256
1db9d9d597636fb6e579a91b9206ac25e93e912c9fbfc91f604b7b1f0e18cc0a

SHA512
519492e11ee14bce94966d7697094baf4b8135ca587dad061c7f3f13f6561aa4783fe7411dffac27de1c0d3add2a1311d48b2b1d4cef132d69096b841c76eb05

Download Submit
memory/3864-134-0x000000003FAD0000-0x000000003FFA6000-memory.dmp

Filesize
4.8MB

Download
memory/3864-135-0x0000000077630000-0x00000000777D3000-memory.dmp

Filesize
1.6MB

Download
memory/3864-130-0x000000003FAD0000-0x000000003FFA6000-memory.dmp

Filesize
4.8MB

Download
memory/4152-140-0x0000000000C00000-0x00000000010D6000-memory.dmp

Filesize
4.8MB

Download
memory/4824-136-0x0000000077630000-0x00000000777D3000-memory.dmp

Filesize
1.6MB

Download
memory/4824-137-0x000000003FC50000-0x0000000040126000-memory.dmp

Filesize
4.8MB

Download
memory/4824-139-0x000000003FC50000-0x0000000040126000-memory.dmp

Filesize
4.8MB

Download
memory/4824-141-0x0000000077630000-0x00000000777D3000-memory.dmp

Filesize
1.6MB

Download
memory/4824-142-0x000000003FC50000-0x0000000040126000-memory.dmp

Filesize
4.8MB

Download
memory/4824-143-0x000000003FC50000-0x0000000040126000-memory.dmp

Filesize
4.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads