Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23-05-2024 22:43

General

  • Target

    04732128b7057cc1c8f8ae18b36fedd62d91f015bb5c73ec6020507d467a1c64.exe

  • Size

    3.5MB

  • MD5

    02b57782159b39cbdcea2f6236ca60d2

  • SHA1

    910ed6cd32b9fa278eff0db51f41658a82bb7336

  • SHA256

    04732128b7057cc1c8f8ae18b36fedd62d91f015bb5c73ec6020507d467a1c64

  • SHA512

    8498e564fd11c0d7b7742ab44294dd813ff2f3a70982223d4785736d027562d846487a5737afd7e61856c734b86640eaae76b5693c88ab5015b07c7d0ba83197

  • SSDEEP

    49152:CEjEamQb2OguN8Dfk5JEG14wv2QwnN4iTapOcaPKfjtD8cEOxeuxzS2hPV5T1gWy:CEjlmQbfgSgwvSnN4iVJuF0xfreseq9

Score
7/10

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.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\04732128b7057cc1c8f8ae18b36fedd62d91f015bb5c73ec6020507d467a1c64.exe
    "C:\Users\Admin\AppData\Local\Temp\04732128b7057cc1c8f8ae18b36fedd62d91f015bb5c73ec6020507d467a1c64.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: EnumeratesProcesses
    PID:2204

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Defense Evasion

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    74KB

    MD5

    2814acbd607ba47bdbcdf6ac3076ee95

    SHA1

    50ab892071bed2bb2365ca1d4bf5594e71c6b13b

    SHA256

    5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67

    SHA512

    34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

  • memory/2204-6-0x0000000000160000-0x000000000016A000-memory.dmp
    Filesize

    40KB

  • memory/2204-7-0x0000000000160000-0x000000000016A000-memory.dmp
    Filesize

    40KB

  • memory/2204-11-0x0000000000160000-0x000000000016A000-memory.dmp
    Filesize

    40KB

  • memory/2204-10-0x0000000000160000-0x000000000016A000-memory.dmp
    Filesize

    40KB