Analysis

  • max time kernel
    143s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-12-2023 02:37

General

  • Target

    4d1c70d62f5edbb55a7a1989866d197a.exe

  • Size

    249KB

  • MD5

    4d1c70d62f5edbb55a7a1989866d197a

  • SHA1

    15fefa1560334a038e8ff14562ba67561d8cb18e

  • SHA256

    57db5f379c8ddd940e01917abb0ce4d3a105c47e56ec6e84edc792c9c4d50aaa

  • SHA512

    209a22a5f3952bed6f716406e4dc37cc977fcf2669736da156548b8875bbea7e68eeb608e23fd1c48e3d7a0ee2b8473b9baad49ae53e6dfb85ecc0e262cebbbc

  • SSDEEP

    6144:h1OgDPdkBAFZWjadD4s5Tt57NODStZ8F2HyRek:h1OgLdaOTt55ODStaF2HyRek

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 1 IoCs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops Chrome extension 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 45 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4d1c70d62f5edbb55a7a1989866d197a.exe
    "C:\Users\Admin\AppData\Local\Temp\4d1c70d62f5edbb55a7a1989866d197a.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4752
    • C:\Users\Admin\AppData\Local\Temp\7zS979C.tmp\50e9739126820.exe
      .\50e9739126820.exe /s
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops Chrome extension
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      • System policy modification
      PID:2040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2040-78-0x0000000073F70000-0x0000000073F7A000-memory.dmp

    Filesize

    40KB