buer | 110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4

Analysis

max time kernel
16s
max time network
110s
platform
windows10_x64
resource
win10v20201028
submitted
15-12-2020 17:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

servises.exe
Size

84KB
MD5

a61dd95d2cc4906965584bb254dcabfb
SHA1

e0fb69709c4d5b98f53d4f146c706529f3a9a4fe
SHA256

110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4
SHA512

92cd8dda86441c98c1ad8891d2a63feea50f5bae4a7c5d82f152780b2bf84c78da222fbed9f6b62deba015e9b63fe6962a76f92b9fab61c19cfb2f7890de183b

Score

10^/10

buer loader

Malware Config

Extracted

Family

buer

softwareconsbank.com

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.

resource	yara_rule
behavioral2/memory/1636-3-0x0000000040000000-0x0000000040009000-memory.dmp	buer
behavioral2/memory/1636-4-0x0000000040005DA8-mapping.dmp	buer
behavioral2/memory/1636-5-0x0000000040000000-0x0000000040009000-memory.dmp	buer

Loads dropped DLL 1 IoCs

pid	Process
1052	servises.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1052 set thread context of 1636	1052	servises.exe	79

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1052	servises.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1052 wrote to memory of 1636	1052	servises.exe	79
PID 1052 wrote to memory of 1636	1052	servises.exe	79
PID 1052 wrote to memory of 1636	1052	servises.exe	79
PID 1052 wrote to memory of 1636	1052	servises.exe	79

C:\Users\Admin\AppData\Local\Temp\servises.exe
"C:\Users\Admin\AppData\Local\Temp\servises.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1052
- C:\Users\Admin\AppData\Local\Temp\servises.exe
  "C:\Users\Admin\AppData\Local\Temp\servises.exe"
  2⤵
  PID:1636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1636-3-0x0000000040000000-0x0000000040009000-memory.dmp

Filesize
36KB

Download
memory/1636-5-0x0000000040000000-0x0000000040009000-memory.dmp

Filesize
36KB

Download