Overview

overview

8

Static

static

3

d4c40c58b6...63.exe

windows7-x64

8

d4c40c58b6...63.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-04-2024 18:14

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General

  • Target

    d4c40c58b68820f6945028552be94c153b193c63f58bb4e0804cc9146ec2ba63.exe

  • Size

    403KB

  • MD5

    7c47dc81a84b64c5017b17f2076d88ea

  • SHA1

    da2aa562c7635d745d786e38a428f8cc139a39da

  • SHA256

    d4c40c58b68820f6945028552be94c153b193c63f58bb4e0804cc9146ec2ba63

  • SHA512

    32cefcd2da96e98d8f43dd945cf64a46e79c8603f1c8f20e8a2ca19c86340e1e5367468a497123b54a9aeeb14a762b26cdbecbfa54adde5c5c5397df16db7154

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4q:gtRfJcNYFNm8UhlZGseq

Score
8/10
bootkitpersistencespywarestealer

Malware Config

Signatures

  • Blocklisted process makes network request 8 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 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 use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d4c40c58b68820f6945028552be94c153b193c63f58bb4e0804cc9146ec2ba63.exe
    "C:\Users\Admin\AppData\Local\Temp\d4c40c58b68820f6945028552be94c153b193c63f58bb4e0804cc9146ec2ba63.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ntnxj.exe "C:\Users\Admin\AppData\Local\Temp\d4c40c58b68820f6945028552be94c153b193c63f58bb4e0804cc9146ec2ba63.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2848
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:228
      • C:\Users\Admin\AppData\Local\Temp\ntnxj.exe
        C:\Users\Admin\AppData\Local\Temp\\ntnxj.exe "C:\Users\Admin\AppData\Local\Temp\d4c40c58b68820f6945028552be94c153b193c63f58bb4e0804cc9146ec2ba63.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4912
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\ueoyra\gvkmu.dll",Verify C:\Users\Admin\AppData\Local\Temp\ntnxj.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2380

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ntnxj.exe
    Filesize

    403KB

    MD5

    544d802e794cbdaf092e428dffddb478

    SHA1

    dd6f0188eb7e2c9ef080bafc10eaab649764ec13

    SHA256

    b84d072d25979f5ac273ce1ab6b59119eb7c2aab41fa3b6de65236c6fd40fc63

    SHA512

    849509f1dee10976f2238b418b8609e42be654c7026529e70ca1a3334236ee3b92edbaf32486de84d61fbb5ad5c3e3b4e683295b9b54a04eddc056ae89172cae

    Download Submit
  • \??\c:\Program Files\ueoyra\gvkmu.dll
    Filesize

    228KB

    MD5

    5f469063740e7ba31eed7d356ba44c62

    SHA1

    18ebbf096679384f5bc19fc66f115ad91ef5a478

    SHA256

    8d3c954d7115c636c73f1ea952c01332f41d354cdbe93dd38b42debb84aaa751

    SHA512

    7c4b96a2a8d926d96d12f4c63e87ca6ff14dc3fb8319477316afcc875785cccfa1b9034120f79afea251904ac93bed232377f4444d1c70fb7627453548402430

    Download Submit
  • memory/2380-10-0x0000000010000000-0x0000000010080000-memory.dmp
    Filesize

    512KB

    Download
  • memory/2380-11-0x0000000010000000-0x0000000010080000-memory.dmp
    Filesize

    512KB

    Download
  • memory/2380-13-0x0000000010000000-0x0000000010080000-memory.dmp
    Filesize

    512KB

    Download
  • memory/3908-0-0x0000000000400000-0x0000000000464000-memory.dmp
    Filesize

    400KB

    Download
  • memory/3908-2-0x0000000000400000-0x0000000000464000-memory.dmp
    Filesize

    400KB

    Download
  • memory/4912-7-0x0000000000400000-0x0000000000464000-memory.dmp
    Filesize

    400KB

    Download