Overview

overview

7

Static

static

21b241e1bc...46.exe

windows7-x64

7

21b241e1bc...46.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    94s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2022 08:47

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General

  • Target

    21b241e1bc0fc488e8c1f5aefe842037e348936e16f89e42f57c5f30305ab346.exe

  • Size

    3.4MB

  • MD5

    975b633870d04928b9ae07a3eff11e5a

  • SHA1

    fb9f18a82b40daef346a21b3c0cf49614912551b

  • SHA256

    21b241e1bc0fc488e8c1f5aefe842037e348936e16f89e42f57c5f30305ab346

  • SHA512

    57634fddd31c9b30ce63ef757abf673ccd66010949c70626eccc379999a7735a51ccabddd4b69456f968eaf1892deb08d2211eb688aee82142af7d8f85c94ca0

  • SSDEEP

    49152:5odMpdZGgwXKq3dL+WeEbaxJAtoJyWD9sjG092AoLtHe5XN5zbsPDBTusUkrGqs7:5omddzCdVeEeJAtg+T5xrhdi8qZG

Score
7/10
bootkitpersistence

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • 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\21b241e1bc0fc488e8c1f5aefe842037e348936e16f89e42f57c5f30305ab346.exe
    "C:\Users\Admin\AppData\Local\Temp\21b241e1bc0fc488e8c1f5aefe842037e348936e16f89e42f57c5f30305ab346.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: EnumeratesProcesses
    PID:3672

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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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