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Overview

overview

10

Static

static

10

1f33e14b05...0b.exe

windows7-x64

9

1f33e14b05...0b.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    142s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    29/04/2024, 19:21

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General

  • Target

    1f33e14b054b821e5ffe0ae8377d096cad493a3087f4fea0b5f30eac7a46180b.exe

  • Size

    405KB

  • MD5

    8940705a9dee5e2e6dab7279d9e44fbb

  • SHA1

    efa9de6c5015cfd51594bea8ea15d88a1cbeb19a

  • SHA256

    1f33e14b054b821e5ffe0ae8377d096cad493a3087f4fea0b5f30eac7a46180b

  • SHA512

    5fdaaa9fea5d8f5f538e7a9eb13f9e4a3b1db695e05b8c2fb89f39e9b218307388d6223a8f79342936363f73dcd7048ce089472a809997df2fcbfd03d73a2522

  • SSDEEP

    12288:vdDU6g13sJd1fm/+yb3O2jg82ydU/DdKumy:vdE3sJd1fm/+yb3OYg84/JHJ

Score
9/10
bootkitpersistencespywarestealer

Malware Config

Signatures

  • Detects executables containing base64 encoded User Agent 3 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 7 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
  • Drops file in Program Files directory 4 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f33e14b054b821e5ffe0ae8377d096cad493a3087f4fea0b5f30eac7a46180b.exe
    "C:\Users\Admin\AppData\Local\Temp\1f33e14b054b821e5ffe0ae8377d096cad493a3087f4fea0b5f30eac7a46180b.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2940
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\bltnh.exe "C:\Users\Admin\AppData\Local\Temp\1f33e14b054b821e5ffe0ae8377d096cad493a3087f4fea0b5f30eac7a46180b.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2804
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2540
      • C:\Users\Admin\AppData\Local\Temp\bltnh.exe
        C:\Users\Admin\AppData\Local\Temp\\bltnh.exe "C:\Users\Admin\AppData\Local\Temp\1f33e14b054b821e5ffe0ae8377d096cad493a3087f4fea0b5f30eac7a46180b.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2652
        • \??\c:\Program Files\buvqg\yptgjfsx.exe
          "c:\Program Files\buvqg\yptgjfsx.exe" "c:\Program Files\buvqg\yptgjfsx.dll",Viewer C:\Users\Admin\AppData\Local\Temp\bltnh.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2604

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    406KB

    MD5

    7c1fb10b34e766c4610cbbff2e31ec05

    SHA1

    add6a650958efe9f204c769e90254ab6f3ca90d9

    SHA256

    a2b41ba5c50f1fe302c8dac6a4c9f3b49e12cc8c023adb554508fdd763728997

    SHA512

    25177999c3545c112c7437dd5704d7a48631bee007b3193d23d98033ad56a1cc457a1b2e15de4c23600ef5bdad33c90db8f8c5e238268abdb5f933952222d36e

    Download Submit

  • \??\c:\Program Files\buvqg\yptgjfsx.exe
    Filesize

    43KB

    MD5

    51138beea3e2c21ec44d0932c71762a8

    SHA1

    8939cf35447b22dd2c6e6f443446acc1bf986d58

    SHA256

    5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

    SHA512

    794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    Download Submit

  • \Program Files\buvqg\yptgjfsx.dll
    Filesize

    89KB

    MD5

    8dc2a73c02ad52e437a072ff6452d3fe

    SHA1

    c366888965cd7e75338d424ed761a22eea163769

    SHA256

    825140715a6493a90fb88708996a8f87b7b9ccdefd2a1a241c87bfb4c551b191

    SHA512

    cd1c747667dee3c6922939f5d76cfb2a8ae701505c0976d58b72601480b04e3284b7a5a3712782149b7420ca5079e6cdc97996b9281a076e15dd441a184783e6

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  • memory/2604-17-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2604-18-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2604-22-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2604-23-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

    Download