Overview

overview

10

Static

static

10

8eddbb86c3...0f.exe

windows7-x64

7

8eddbb86c3...0f.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    95s
  • max time network
    104s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-06-2024 01:43

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General

  • Target

    8eddbb86c3e2733a2a8f0299019bdbdb2ef479a264cac47628b6f294d1d0a90f.exe

  • Size

    3.6MB

  • MD5

    dd90cc192b0638b05a47efd020749ba6

  • SHA1

    6ba0309e3480cc7fae8ac8afc4a46f009ad99bb4

  • SHA256

    8eddbb86c3e2733a2a8f0299019bdbdb2ef479a264cac47628b6f294d1d0a90f

  • SHA512

    890960699a882c73a7d98f14168124d1be044ea4c0d7adb4ac38615ba7576ab840db42220a7a8e79c3c15042d90e0e48057ac45bb2650777fd8bc16dd3527f18

  • SSDEEP

    49152:DEjEamQb2OguN8Dfk5JEG14wv2QwnN4iTapOcaPKfjtD8cEOxeuxzS2hPV5T1gWE:DEjlmQbfgSgwvSnN4iVJuk0xJgnqM

Score
7/10
bootkitpersistence

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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 behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8eddbb86c3e2733a2a8f0299019bdbdb2ef479a264cac47628b6f294d1d0a90f.exe
    "C:\Users\Admin\AppData\Local\Temp\8eddbb86c3e2733a2a8f0299019bdbdb2ef479a264cac47628b6f294d1d0a90f.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: EnumeratesProcesses
    PID:4988

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Tencent\TxGameAssistant\TGBDownloader\dr.dll
    Filesize

    74KB

    MD5

    2814acbd607ba47bdbcdf6ac3076ee95

    SHA1

    50ab892071bed2bb2365ca1d4bf5594e71c6b13b

    SHA256

    5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67

    SHA512

    34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

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