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Analysis

  • max time kernel
    144s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06/04/2024, 01:31

General

  • Target

    b11eac916daabd2924e16d9f4bac0b8760f608c8f23c9e98d2b0240526a00c59.exe

  • Size

    732KB

  • MD5

    8ff6d5c20b09737261248a3335ce8898

  • SHA1

    764fcf893e02ec25e46feac2cb88ae88b32be3a7

  • SHA256

    b11eac916daabd2924e16d9f4bac0b8760f608c8f23c9e98d2b0240526a00c59

  • SHA512

    59a765ea56a7dd821f1f059d65785daefba05bb563be8fc82e71577be2ba12a224f0adc761b06188c6a437860cb91482b468b657dd4aa33f9b2fb9f525d87b2e

  • SSDEEP

    12288:Mo9HOyVpvKsdkVDik53lldigcOmTywmHBjLrAI:MGuyVpv7dkVDJ5VlcgcAwOrAI

Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 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).

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b11eac916daabd2924e16d9f4bac0b8760f608c8f23c9e98d2b0240526a00c59.exe
    "C:\Users\Admin\AppData\Local\Temp\b11eac916daabd2924e16d9f4bac0b8760f608c8f23c9e98d2b0240526a00c59.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Users\Admin\AppData\Local\Temp\b11eac916daabd2924e16d9f4bac0b8760f608c8f23c9e98d2b0240526a00c59.exe
      "C:\Users\Admin\AppData\Local\Temp\b11eac916daabd2924e16d9f4bac0b8760f608c8f23c9e98d2b0240526a00c59.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:2584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsd2740.tmp\System.dll

    Filesize

    12KB

    MD5

    0d7ad4f45dc6f5aa87f606d0331c6901

    SHA1

    48df0911f0484cbe2a8cdd5362140b63c41ee457

    SHA256

    3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

    SHA512

    c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

  • memory/2524-16-0x0000000004070000-0x0000000004DBC000-memory.dmp

    Filesize

    13.3MB

  • memory/2524-10-0x0000000004070000-0x0000000004DBC000-memory.dmp

    Filesize

    13.3MB

  • memory/2524-11-0x0000000077940000-0x0000000077AE9000-memory.dmp

    Filesize

    1.7MB

  • memory/2524-12-0x0000000077B30000-0x0000000077C06000-memory.dmp

    Filesize

    856KB

  • memory/2524-13-0x0000000074E60000-0x0000000074E67000-memory.dmp

    Filesize

    28KB

  • memory/2524-26-0x0000000004070000-0x0000000004DBC000-memory.dmp

    Filesize

    13.3MB

  • memory/2584-15-0x0000000077940000-0x0000000077AE9000-memory.dmp

    Filesize

    1.7MB

  • memory/2584-17-0x0000000077B66000-0x0000000077B67000-memory.dmp

    Filesize

    4KB

  • memory/2584-18-0x00000000004B0000-0x0000000001512000-memory.dmp

    Filesize

    16.4MB

  • memory/2584-20-0x0000000001520000-0x000000000226C000-memory.dmp

    Filesize

    13.3MB

  • memory/2584-21-0x0000000077B30000-0x0000000077C06000-memory.dmp

    Filesize

    856KB

  • memory/2584-14-0x0000000001520000-0x000000000226C000-memory.dmp

    Filesize

    13.3MB