buer | d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6

Resubmissions

13-02-2021 05:16

210213-atnqs85c7a 10

13-02-2021 00:12

210213-k9zhewha3j 10

02-02-2021 12:35

210202-vg7em3tbxn 10

Analysis

max time kernel
305s
max time network
122s
platform
windows10_x64
resource
win10v20201028
submitted
13-02-2021 05:16

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General

Target

d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6.exe
Size

22KB
MD5

1c3fd3a47171b6312cb28d996da0a0d9
SHA1

7e53bcbf99a3d164431b0318fe4ccb8cfe7da40a
SHA256

d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6
SHA512

762c3d63fa49f972e4e37b0be9627575f24f9527960450f640835c06b72909a9237aac749adf6b77a52790f17358106887d6cb630a196727d00ef113daf05892

Score

10^/10

buer loader persistence

Malware Config

Extracted

Family

buer

http://95.216.251.221:8080/

Signatures

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

Buer Loader 2 IoCs

Detects Buer loader in memory or disk.

resource	yara_rule
behavioral1/files/0x000100000001ab65-3.dat	buer
behavioral1/files/0x000100000001ab65-4.dat	buer

Executes dropped EXE 1 IoCs

pid	Process
3240	manager.exe

Deletes itself 1 IoCs

pid	Process
3240	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-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	manager.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\ActiveX Component = "C:\\Users\\Admin\\AppData\\Roaming\\ActiveX\\manager.exe꼀"	manager.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 580 wrote to memory of 3240	580	d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6.exe	78
PID 580 wrote to memory of 3240	580	d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6.exe	78
PID 580 wrote to memory of 3240	580	d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6.exe	78

C:\Users\Admin\AppData\Local\Temp\d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6.exe
"C:\Users\Admin\AppData\Local\Temp\d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:580
- C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
  C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe "C:\Users\Admin\AppData\Local\Temp\d0b8e002997a8fed4ec8ec7996a4c7fabd360a7119d388c632d00ff1405269a6.exe" ensgJJ
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  PID:3240

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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