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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/02/2025, 04:35

General

  • Target

    3cbf667708454e834055faa9c6b33ddccc3cb03866b141ad3fc0e2c037252852.exe

  • Size

    1.0MB

  • MD5

    d5faf5e23d3ad4566c055e102563be4b

  • SHA1

    0d2b605f772f035e458b628371dff2c6a95d3bdd

  • SHA256

    3cbf667708454e834055faa9c6b33ddccc3cb03866b141ad3fc0e2c037252852

  • SHA512

    d304a8c6fec6d45974a145f380325b568d0374993e93741898639e87859b735cb7caa046669889a4d49d376efecd397e19471e2821f39af8988db88ef2711564

  • SSDEEP

    24576:+5/UGA4A1TEQeYMexXYvRCEOYkYRU2fNYwYtYPY:+pUGA4A1T3l5ovRH1bqyuXOg

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3cbf667708454e834055faa9c6b33ddccc3cb03866b141ad3fc0e2c037252852.exe
    "C:\Users\Admin\AppData\Local\Temp\3cbf667708454e834055faa9c6b33ddccc3cb03866b141ad3fc0e2c037252852.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2780
    • C:\Users\Admin\AppData\Local\Temp\3cbf667708454e834055faa9c6b33ddccc3cb03866b141ad3fc0e2c037252852.exe
      "C:\Users\Admin\AppData\Local\Temp\3cbf667708454e834055faa9c6b33ddccc3cb03866b141ad3fc0e2c037252852.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:3964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsuB6FD.tmp\System.dll

    Filesize

    11KB

    MD5

    cf85183b87314359488b850f9e97a698

    SHA1

    6b6c790037eec7ebea4d05590359cb4473f19aea

    SHA256

    3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

    SHA512

    fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

  • C:\Users\Admin\Quiddler\markus\superceded\Stenostomatous\Pampered\Udskamningens\ned.ini

    Filesize

    34KB

    MD5

    46d760ff5d80888a54a38d5bd968c3b9

    SHA1

    074ffba863941492da6fceb711fc6f6d49884d62

    SHA256

    89da4d13eedf0d1128752be5993608a45d8b1d3377ce852cac6938c0514f7952

    SHA512

    5c1429bc19c1c154a746ba09376d35293b60a4f95196db3acbbc738d4f3a65c93fc67bdcfc4d15db5485d4bf8cc7bddd8d93c150e2760c88b1bca8aef0cb27c8

  • memory/2780-29-0x0000000077C51000-0x0000000077D71000-memory.dmp

    Filesize

    1.1MB

  • memory/2780-30-0x0000000010004000-0x0000000010005000-memory.dmp

    Filesize

    4KB

  • memory/3964-32-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/3964-31-0x0000000001660000-0x00000000069D4000-memory.dmp

    Filesize

    83.5MB

  • memory/3964-33-0x0000000077C51000-0x0000000077D71000-memory.dmp

    Filesize

    1.1MB

  • memory/3964-35-0x0000000077CD8000-0x0000000077CD9000-memory.dmp

    Filesize

    4KB

  • memory/3964-34-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/3964-36-0x0000000077CF5000-0x0000000077CF6000-memory.dmp

    Filesize

    4KB

  • memory/3964-37-0x0000000077C51000-0x0000000077D71000-memory.dmp

    Filesize

    1.1MB