buer | 110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4

Analysis

max time kernel
14s
max time network
9s
platform
windows7_x64
resource
win7v20201028
submitted
15-12-2020 18:01

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General

Target

110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.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
behavioral1/memory/1392-3-0x0000000040000000-0x0000000040009000-memory.dmp	buer
behavioral1/memory/1392-4-0x0000000040005DA8-mapping.dmp	buer
behavioral1/memory/1392-5-0x0000000040000000-0x0000000040009000-memory.dmp	buer

Loads dropped DLL 1 IoCs

pid	Process
1684	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1684 set thread context of 1392	1684	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	29

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
1684	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 1392	1684	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	29
PID 1684 wrote to memory of 1392	1684	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	29
PID 1684 wrote to memory of 1392	1684	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	29
PID 1684 wrote to memory of 1392	1684	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	29
PID 1684 wrote to memory of 1392	1684	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	29

C:\Users\Admin\AppData\Local\Temp\110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe
"C:\Users\Admin\AppData\Local\Temp\110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Users\Admin\AppData\Local\Temp\110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe
  "C:\Users\Admin\AppData\Local\Temp\110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe"
  2⤵
  PID:1392

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

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Downloads

memory/1392-3-0x0000000040000000-0x0000000040009000-memory.dmp

Filesize
36KB

Download
memory/1392-5-0x0000000040000000-0x0000000040009000-memory.dmp

Filesize
36KB

Download