Overview

overview

10

Static

static

7

80e3529745...aa.exe

windows7_x64

10

80e3529745...aa.exe

windows10-2004_x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    80e35297452f56d53068cfaa87d95cbb9af7f5a44c9db7b0a84f4a8ff83ebdaa

  • Size

    2.5MB

  • Sample

    220625-cs49gsaear

  • MD5

    76195dea24952425594e7db7239ce0aa

  • SHA1

    b9791aef3c83751b937f2b60fda094cecb8954a8

  • SHA256

    80e35297452f56d53068cfaa87d95cbb9af7f5a44c9db7b0a84f4a8ff83ebdaa

  • SHA512

    0cdce90ccffcd69dcf5cc1ff8f0ecfc55f16227b2f6e1141f80c5dfe4dddec71db097755d47715cc59ea4f10ef5c72598eef252f87e923adbac212a27bd90727

Score
10/10
buerevasionloaderpersistencethemidatrojan

Malware Config

Extracted

Family

buer

C2

http://burload01.top/

http://burload02.top/

|�

Targets

    • Target

      80e35297452f56d53068cfaa87d95cbb9af7f5a44c9db7b0a84f4a8ff83ebdaa

    • Size

      2.5MB

    • MD5

      76195dea24952425594e7db7239ce0aa

    • SHA1

      b9791aef3c83751b937f2b60fda094cecb8954a8

    • SHA256

      80e35297452f56d53068cfaa87d95cbb9af7f5a44c9db7b0a84f4a8ff83ebdaa

    • SHA512

      0cdce90ccffcd69dcf5cc1ff8f0ecfc55f16227b2f6e1141f80c5dfe4dddec71db097755d47715cc59ea4f10ef5c72598eef252f87e923adbac212a27bd90727

    Score
    10/10
    buerevasionloaderpersistencethemidatrojan

    • Buer

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

      loaderbuer

    • Modifies WinLogon for persistence

      persistence

    • Buer Loader

      Detects Buer loader in memory or disk.

      loader

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Executes dropped EXE

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Deletes itself

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Checks whether UAC is enabled

      evasiontrojan

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks