buer | e81d26edffa4b4570584bd1cb36211587108dfbbfc24f303a2c3e261cc3c59c1

Analysis

max time kernel
15s
max time network
107s
platform
windows10_x64
resource
win10v20201028
submitted
02-02-2021 14:16

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General

Target

SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe
Size

83KB
MD5

f7fc343cbf86f08c7b529ab451677752
SHA1

1ef5d87b03502389362fa7a2aa3931b5e3e34353
SHA256

e81d26edffa4b4570584bd1cb36211587108dfbbfc24f303a2c3e261cc3c59c1
SHA512

c77f3ac253edd3f2bdd23593c098d5de2e4fdeae7f8dadb04a1da49a8d984b4a790a9a0e538eafad7e22075b9f6527cc387dc8c4920f15fcaa09c4048a1e0a37

Score

10^/10

buer loader

Malware Config

Extracted

Family

buer

tokacpebanking.com

Signatures

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

Buer Loader 1 IoCs

Detects Buer loader in memory or disk.

resource	yara_rule
behavioral2/memory/3772-4-0x0000000040000000-0x000000004000A000-memory.dmp	buer

Loads dropped DLL 1 IoCs

pid	Process
1180	SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1180 set thread context of 3772	1180	SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.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
1180	SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 3772	1180	SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe	79
PID 1180 wrote to memory of 3772	1180	SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe	79
PID 1180 wrote to memory of 3772	1180	SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe	79
PID 1180 wrote to memory of 3772	1180	SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe	79

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.BuerLoader.1.17897.26464.exe"
  2⤵
  PID:3772

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/3772-4-0x0000000040000000-0x000000004000A000-memory.dmp

Filesize
40KB

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