Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    24-12-2024 09:47

General

  • Target

    WTF.exe

  • Size

    344KB

  • MD5

    9b3059448f3fa6da827ef925f9f86e33

  • SHA1

    9854bd2c791a99d6409c66ea0f5806d615720e20

  • SHA256

    8e9488d20c505541485cbaf7a2716c0567512de6f3f87bb34b5ddc87a0fe78b9

  • SHA512

    f74f8dfe9f88ffc69e0d71c442b6195640a145da11c7d2bca5529710fa8fed2355d63e68e160f991a8c9d822561ce7e0d518a0075ef48710be3b24b26ea5cda0

  • SSDEEP

    6144:IbE/HU7YLR1SIk6HRa5fjt/iW3DIM4xIhM1IiQ/q+A9TgOCkjMJCRu0Wp3Ww:IbALvSCHWf1tiQC+A9Tbz03Ww

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 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 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WTF.exe
    "C:\Users\Admin\AppData\Local\Temp\WTF.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Users\Admin\AppData\Local\Temp\WTF.exe
      "C:\Users\Admin\AppData\Local\Temp\WTF.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:2800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nse4C3.tmp\System.dll

    Filesize

    12KB

    MD5

    cff85c549d536f651d4fb8387f1976f2

    SHA1

    d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

    SHA256

    8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

    SHA512

    531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

  • memory/1908-6-0x0000000002A50000-0x0000000002BA0000-memory.dmp

    Filesize

    1.3MB

  • memory/1908-7-0x0000000077881000-0x0000000077982000-memory.dmp

    Filesize

    1.0MB

  • memory/1908-9-0x0000000077880000-0x0000000077A29000-memory.dmp

    Filesize

    1.7MB

  • memory/1908-8-0x0000000002A50000-0x0000000002BA0000-memory.dmp

    Filesize

    1.3MB

  • memory/1908-10-0x0000000002A50000-0x0000000002BA0000-memory.dmp

    Filesize

    1.3MB

  • memory/2800-11-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/2800-12-0x0000000077880000-0x0000000077A29000-memory.dmp

    Filesize

    1.7MB

  • memory/2800-13-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/2800-15-0x0000000077880000-0x0000000077A29000-memory.dmp

    Filesize

    1.7MB