Overview

overview

10

Static

static

1dfda4abbd...3e.exe

windows7_x64

9

1dfda4abbd...3e.exe

windows10_x64

10

Analysis

  • max time kernel
    13s
  • max time network
    15s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    14-12-2020 13:49

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General

  • Target

    1dfda4abbd51e74613b3ba1677af903e.exe

  • Size

    2.8MB

  • MD5

    1dfda4abbd51e74613b3ba1677af903e

  • SHA1

    ad38064749d2fe61cd643ae285a3908bf8f9de57

  • SHA256

    e5b6669d36d5bc85497f953c51aac4dfe9d7b5ce1dd9b43e6c26d345eba35948

  • SHA512

    0498240682315a996aadba546d64a7036d403fd252f041aac287b60b32a747c0093b0ef5e8d30dad3ac89f12d9ce22b71e8ef676afe5be1b315db3ebe0229687

Score
9/10
bootkitevasionpersistencetrojan

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1dfda4abbd51e74613b3ba1677af903e.exe
    "C:\Users\Admin\AppData\Local\Temp\1dfda4abbd51e74613b3ba1677af903e.exe"
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1636
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1636 -s 1912
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1052

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/1052-7-0x0000000000000000-mapping.dmp
    Download
  • memory/1052-8-0x0000000002260000-0x0000000002271000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1052-11-0x0000000002730000-0x0000000002741000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1636-3-0x0000000004DF0000-0x0000000004E01000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1636-2-0x00000000049E0000-0x00000000049F1000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1636-4-0x0000000074590000-0x0000000074C7E000-memory.dmp
    Filesize

    6.9MB

    Download
  • memory/1636-5-0x0000000000EE0000-0x0000000000EE1000-memory.dmp
    Filesize

    4KB

    Download