Analysis

  • max time kernel
    147s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/01/2025, 05:20

General

  • Target

    d279cafd050cd071af764df4cc856e9e188ce0c920d13429a3b33129c7e4cee2.exe

  • Size

    422KB

  • MD5

    ad29d6168abbec988896c57d4d25e2ed

  • SHA1

    469b06a2d18997abeb8829bd6e495cdfee811270

  • SHA256

    d279cafd050cd071af764df4cc856e9e188ce0c920d13429a3b33129c7e4cee2

  • SHA512

    5b5c702fc4d24dc03e46f5238969d7f6010d1298a928cc6dcdbfedf69cc8440e53480ddbac57deef9d100499f97d18b55f895770bb916a5f29a6770594041468

  • SSDEEP

    12288:I5AeDyYI91QcLmn1XNu7Jj1JK8s5FEeKJ:ZebIEXNu7Jj1Jices

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Disables Task Manager via registry modification
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 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: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d279cafd050cd071af764df4cc856e9e188ce0c920d13429a3b33129c7e4cee2.exe
    "C:\Users\Admin\AppData\Local\Temp\d279cafd050cd071af764df4cc856e9e188ce0c920d13429a3b33129c7e4cee2.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:5008
    • C:\Users\Admin\AppData\Local\Temp\d279cafd050cd071af764df4cc856e9e188ce0c920d13429a3b33129c7e4cee2.exe
      "C:\Users\Admin\AppData\Local\Temp\d279cafd050cd071af764df4cc856e9e188ce0c920d13429a3b33129c7e4cee2.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:444

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\nsmA3C3.tmp\System.dll

          Filesize

          11KB

          MD5

          ee260c45e97b62a5e42f17460d406068

          SHA1

          df35f6300a03c4d3d3bd69752574426296b78695

          SHA256

          e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

          SHA512

          a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

        • memory/444-34-0x0000000036C00000-0x0000000036C9C000-memory.dmp

          Filesize

          624KB

        • memory/444-33-0x0000000036CE0000-0x0000000037284000-memory.dmp

          Filesize

          5.6MB

        • memory/444-41-0x0000000037AB0000-0x0000000037ABA000-memory.dmp

          Filesize

          40KB

        • memory/444-39-0x0000000037830000-0x00000000379F2000-memory.dmp

          Filesize

          1.8MB

        • memory/444-18-0x00000000016C0000-0x0000000004090000-memory.dmp

          Filesize

          41.8MB

        • memory/444-31-0x0000000000460000-0x00000000016B4000-memory.dmp

          Filesize

          18.3MB

        • memory/444-32-0x0000000000460000-0x000000000047E000-memory.dmp

          Filesize

          120KB

        • memory/444-38-0x00000000372D0000-0x0000000037320000-memory.dmp

          Filesize

          320KB

        • memory/444-37-0x0000000037690000-0x0000000037722000-memory.dmp

          Filesize

          584KB

        • memory/444-36-0x00000000016C0000-0x0000000004090000-memory.dmp

          Filesize

          41.8MB

        • memory/5008-14-0x0000000002A60000-0x0000000005430000-memory.dmp

          Filesize

          41.8MB

        • memory/5008-15-0x0000000077771000-0x0000000077891000-memory.dmp

          Filesize

          1.1MB

        • memory/5008-17-0x0000000002A60000-0x0000000005430000-memory.dmp

          Filesize

          41.8MB

        • memory/5008-16-0x0000000010004000-0x0000000010005000-memory.dmp

          Filesize

          4KB