buer | 8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22

General

Target

8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe
Size

31KB
MD5

b7eabb9d09f243bcb2c47d411028b07b
SHA1

b65366292b2d5d917f6aaee8634e635f4b5308ef
SHA256

8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22
SHA512

5285067287e4cdb4f0ee121eaf2fce2ae91d1bec0f7ebfff657dc452493db3c637b54d0cb495590bf92253ffcd4aa9681b015c258717966ef89a9b83859c300f

Score

10^/10

buer loader persistence

Malware Config

Extracted

Family

buer

C2

http://looad.top/

http://looad02.top/

Signatures

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

Buer Loader 9 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral1/files/0x000800000001483d-55.dat	buer
behavioral1/files/0x000800000001483d-56.dat	buer
behavioral1/files/0x000800000001483d-58.dat	buer
behavioral1/files/0x000800000001483d-60.dat	buer
behavioral1/memory/1356-69-0x0000000000000000-mapping.dmp	buer
behavioral1/memory/1356-66-0x00000000000C0000-0x00000000000CB000-memory.dmp	buer
behavioral1/memory/1356-65-0x00000000000C0000-0x00000000000CB000-memory.dmp	buer
behavioral1/memory/1356-64-0x00000000000C0000-0x00000000000CB000-memory.dmp	buer
behavioral1/memory/1356-71-0x00000000000C0000-0x00000000000CB000-memory.dmp	buer

Executes dropped EXE 1 IoCs

pid	Process
948	manager.exe

Deletes itself 1 IoCs

pid	Process
948	manager.exe

Loads dropped DLL 2 IoCs

pid	Process
1396	8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe
1396	8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\ActiveX Component = "C:\\Users\\Admin\\AppData\\Roaming\\ActiveX\\manager.exe"	manager.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	secinit.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\ActiveX Component = "C:\\Users\\Admin\\AppData\\Roaming\\ActiveX\\manager.exe"	secinit.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	manager.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1356	secinit.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1396 wrote to memory of 948	1396	8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe	27
PID 1396 wrote to memory of 948	1396	8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe	27
PID 1396 wrote to memory of 948	1396	8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe	27
PID 1396 wrote to memory of 948	1396	8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe	27
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28
PID 948 wrote to memory of 1356	948	manager.exe	28

C:\Users\Admin\AppData\Local\Temp\8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe
"C:\Users\Admin\AppData\Local\Temp\8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
  C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe "C:\Users\Admin\AppData\Local\Temp\8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22.exe" ensgJJ
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:948
- - C:\Windows\SysWOW64\secinit.exe
    C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
    3⤵
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    PID:1356

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

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
31KB

MD5
b7eabb9d09f243bcb2c47d411028b07b

SHA1
b65366292b2d5d917f6aaee8634e635f4b5308ef

SHA256
8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22

SHA512
5285067287e4cdb4f0ee121eaf2fce2ae91d1bec0f7ebfff657dc452493db3c637b54d0cb495590bf92253ffcd4aa9681b015c258717966ef89a9b83859c300f

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

Filesize
31KB

MD5
b7eabb9d09f243bcb2c47d411028b07b

SHA1
b65366292b2d5d917f6aaee8634e635f4b5308ef

SHA256
8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22

SHA512
5285067287e4cdb4f0ee121eaf2fce2ae91d1bec0f7ebfff657dc452493db3c637b54d0cb495590bf92253ffcd4aa9681b015c258717966ef89a9b83859c300f

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

Filesize
31KB

MD5
b7eabb9d09f243bcb2c47d411028b07b

SHA1
b65366292b2d5d917f6aaee8634e635f4b5308ef

SHA256
8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22

SHA512
5285067287e4cdb4f0ee121eaf2fce2ae91d1bec0f7ebfff657dc452493db3c637b54d0cb495590bf92253ffcd4aa9681b015c258717966ef89a9b83859c300f

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

Filesize
31KB

MD5
b7eabb9d09f243bcb2c47d411028b07b

SHA1
b65366292b2d5d917f6aaee8634e635f4b5308ef

SHA256
8026e96ade96c109afdeb9bd32d7cdb47cafc596dedd943dbd74828ca684cf22

SHA512
5285067287e4cdb4f0ee121eaf2fce2ae91d1bec0f7ebfff657dc452493db3c637b54d0cb495590bf92253ffcd4aa9681b015c258717966ef89a9b83859c300f

Download Submit
memory/1356-67-0x00000000000D0000-0x00000000000D1000-memory.dmp

Filesize
4KB

Download
memory/1356-66-0x00000000000C0000-0x00000000000CB000-memory.dmp

Filesize
44KB

Download
memory/1356-65-0x00000000000C0000-0x00000000000CB000-memory.dmp

Filesize
44KB

Download
memory/1356-64-0x00000000000C0000-0x00000000000CB000-memory.dmp

Filesize
44KB

Download
memory/1356-62-0x00000000000C0000-0x00000000000CB000-memory.dmp

Filesize
44KB

Download
memory/1356-61-0x00000000000C0000-0x00000000000CB000-memory.dmp

Filesize
44KB

Download
memory/1356-71-0x00000000000C0000-0x00000000000CB000-memory.dmp

Filesize
44KB

Download
memory/1396-54-0x0000000075D21000-0x0000000075D23000-memory.dmp

Filesize
8KB

Download

Resubmissions

Analysis

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