buer | 0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b

General

Target

0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
Size

6.6MB
MD5

9c23bfcb1d153ce2f04a7380535c8253
SHA1

55ce92c01be4fc056d046264ca9788ab61929356
SHA256

0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b
SHA512

587391fc505f07488d8c2bb3889e95b916e2ab6821884ccaf0bcae1ebb5e066beaca64c7c5a9f9bc12cf128b92f49c52011fb89b8a72334e6c99bf495ba0653f

Score

10^/10

buer loader

Malware Config

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/1692-55-0x0000000000B90000-0x0000000000B9C000-memory.dmp	buer
behavioral1/memory/1692-59-0x0000000040000000-0x0000000040009000-memory.dmp	buer
behavioral1/memory/1692-62-0x00000000003F0000-0x00000000003F9000-memory.dmp	buer

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\B:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\E:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\M:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\R:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\S:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\A:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\H:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\O:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\V:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\F:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\I:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\J:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\K:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\P:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\Q:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\T:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\W:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\G:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\Y:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\X:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\N:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\U:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\Z:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
File opened (read-only)	\??\L:	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1692	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
1692	0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe

C:\Users\Admin\AppData\Local\Temp\0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe
"C:\Users\Admin\AppData\Local\Temp\0f1bc716bc8cc1b2657b5e1fcb715180dd567776d2f3cbf34344e8409264841b.exe"
1⤵
- Enumerates connected drives
- Suspicious use of SetWindowsHookEx
PID:1692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1692-54-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download
memory/1692-55-0x0000000000B90000-0x0000000000B9C000-memory.dmp

Filesize
48KB

Download
memory/1692-59-0x0000000040000000-0x0000000040009000-memory.dmp

Filesize
36KB

Download
memory/1692-62-0x00000000003F0000-0x00000000003F9000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing