Analysis

  • max time kernel
    145s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    28/08/2024, 23:04

General

  • Target
    rSHIPMENT_DOCMSS24071327.exe
  • Size 732KB
  • Sample240828-218z3sshmn
  • SHA256 bc94d4814be919e507e812ff0b12a0f16d9a490c855b72ff7b8d4285bed16941
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 2 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rSHIPMENT_DOCMSS24071327.exe
    "C:\Users\Admin\AppData\Local\Temp\rSHIPMENT_DOCMSS24071327.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2708
    • C:\Users\Admin\AppData\Local\Temp\rSHIPMENT_DOCMSS24071327.exe
      "C:\Users\Admin\AppData\Local\Temp\rSHIPMENT_DOCMSS24071327.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:1400

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        System.dll

        • Path \Users\Admin\AppData\Local\Temp\nso48F3.tmp\System.dll
        • Size 11KB
        • SHA256 90f3cebb5b3759eb1bd72cee7cd8b694440ee398fe970b763db7a7b67208e4c8
        • MD5 SHA1 SHA512 SSDEEP

        memory/1400-15-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1400-16-0x00000000775F0000-0x0000000077799000-memory.dmp

        memory/1400-17-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/2708-11-0x0000000002FF0000-0x00000000048B8000-memory.dmp

        memory/2708-13-0x00000000775F0000-0x0000000077799000-memory.dmp

        memory/2708-12-0x00000000775F1000-0x00000000776F2000-memory.dmp

        memory/2708-14-0x0000000002FF0000-0x00000000048B8000-memory.dmp

        memory/2708-29-0x0000000002FF0000-0x00000000048B8000-memory.dmp