buer | 110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4

Analysis

max time kernel
61s
max time network
120s
platform
windows10_x64
resource
win10v20201028
submitted
15/12/2020, 18:01

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General

Target
110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe
Size 84KB
Sample201215-hp1m2dwgsa
SHA256 110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4
MD5 a61dd95d2cc4906965584bb254dcabfb
SHA1 e0fb69709c4d5b98f53d4f146c706529f3a9a4fe
SHA512 92cd8dda86441c98c1ad8891d2a63feea50f5bae4a7c5d82f152780b2bf84c78da222fbed9f6b62deba015e9b63fe6962a76f92b9fab61c19cfb2f7890de183b
MD5 SHA1 SHA512

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/1404-3-0x0000000040000000-0x0000000040009000-memory.dmp	buer
behavioral2/memory/1404-4-0x0000000040005DA8-mapping.dmp	buer
behavioral2/memory/1404-5-0x0000000040000000-0x0000000040009000-memory.dmp	buer

Loads dropped DLL 1 IoCs

pid	Process
3976	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3976 set thread context of 1404	3976	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	78

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
3976	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3976 wrote to memory of 1404	3976	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	78
PID 3976 wrote to memory of 1404	3976	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	78
PID 3976 wrote to memory of 1404	3976	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	78
PID 3976 wrote to memory of 1404	3976	110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe	78

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:3976
- C:\Users\Admin\AppData\Local\Temp\110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe
  "C:\Users\Admin\AppData\Local\Temp\110832d77e7e042955d0bee350f739c3348b3c67ca6f690f02a487d28aefaff4.exe_.exe"
  2⤵
  PID:1404

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

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Downloads

memory/1404-3-0x0000000040000000-0x0000000040009000-memory.dmp

Download

memory/1404-5-0x0000000040000000-0x0000000040009000-memory.dmp