Overview

overview

10

Static

static

10

bf81b2e706...cb.exe

windows7-x64

9

bf81b2e706...cb.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    03-06-2024 03:11

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General

  • Target

    bf81b2e70666edffca20d881464b6dfdaa036a5fc6ee7ed90f4ab5a82c14b2cb.exe

  • Size

    807KB

  • MD5

    77141c566dfb6dd1c53eb347acccb744

  • SHA1

    1367b873c27feef575eb9f6b15ef6b968afa2315

  • SHA256

    bf81b2e70666edffca20d881464b6dfdaa036a5fc6ee7ed90f4ab5a82c14b2cb

  • SHA512

    9fabfff57329d1adfd1616598188dc25dd321b0405b96067de3dadd2d32b2976bc93dccbc3842fc0b3f36bc573b6acf9a91b43ef6a5024f2ad15430e4dcf7e62

  • SSDEEP

    12288:xEQoS+qhzMRei7BunvxPApWm0yLjB/oK+lFkNBBGgwTyBinv6uJjm8Syz4Q:xnzManvxIn0EX+lqnBLOyBinJJC8SNQ

Score
9/10
persistencespywarestealerupx

Malware Config

Signatures

  • Detects executables containing possible sandbox analysis VM usernames 4 IoCs
  • UPX dump on OEP (original entry point) 7 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • 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.

  • Drops file in System32 directory 10 IoCs
  • Drops file in Program Files directory 15 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf81b2e70666edffca20d881464b6dfdaa036a5fc6ee7ed90f4ab5a82c14b2cb.exe
    "C:\Users\Admin\AppData\Local\Temp\bf81b2e70666edffca20d881464b6dfdaa036a5fc6ee7ed90f4ab5a82c14b2cb.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2248
    • C:\Users\Admin\AppData\Local\Temp\bf81b2e70666edffca20d881464b6dfdaa036a5fc6ee7ed90f4ab5a82c14b2cb.exe
      "C:\Users\Admin\AppData\Local\Temp\bf81b2e70666edffca20d881464b6dfdaa036a5fc6ee7ed90f4ab5a82c14b2cb.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2600
      • C:\Users\Admin\AppData\Local\Temp\bf81b2e70666edffca20d881464b6dfdaa036a5fc6ee7ed90f4ab5a82c14b2cb.exe
        "C:\Users\Admin\AppData\Local\Temp\bf81b2e70666edffca20d881464b6dfdaa036a5fc6ee7ed90f4ab5a82c14b2cb.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Windows Sidebar\Shared Gadgets\beast several models feet .rar.exe
    Filesize

    1.7MB

    MD5

    d0b477a6fc7407aef3bb0cf6c4bf7ae5

    SHA1

    78c056df8f80b97f933ed011f81ff17e32744a85

    SHA256

    ed44345fe10cf06db812fe20c55189ae904e9225f168eb84cb82796cb2e4746f

    SHA512

    5c8c81aebc1321c7d5a6c32efda641ff1fd283ac7166aa5c6f2b21547d00e9ca58a1408e780c55de2cdd5c813fcde18584de75923888a49fc101ba6b35915771

    Download Submit

  • memory/1540-82-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/1540-112-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/2248-0-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/2248-37-0x0000000004730000-0x000000000474D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/2248-107-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/2248-109-0x0000000004730000-0x000000000474D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/2600-38-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/2600-81-0x0000000000860000-0x000000000087D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/2600-110-0x0000000000400000-0x000000000041D000-memory.dmp

    Filesize

    116KB

    Download

  • memory/2600-111-0x0000000000860000-0x000000000087D000-memory.dmp

    Filesize

    116KB

    Download