Analysis

  • max time kernel
    94s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/02/2025, 22:19

General

  • Target

    Quote-SA05537809567875351061-24_pdf.exe

  • Size

    1.1MB

  • MD5

    6d1b8cf3d8c8411f6710eab0c6346867

  • SHA1

    0aec013b46abde733174c5a5abca01640b33b7cb

  • SHA256

    7d18061e683a3e165044a7d5bf52504689bbf240b4982300ebe2e6139b68596d

  • SHA512

    46d29dc84e254fc2e87213e520a3632e2d3f2ee5f948e227ed265d1d661b26c9cff63e5220bd55bd8e2a0684a41099d63ec9dcb459c1f84bc8f621bf91f617a8

  • SSDEEP

    24576:EQYne7k84uW9gRaFsjq5c3SddFDykNTwdQG9ik:qneo8QgRkl5kSdzDPwZi

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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 42 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quote-SA05537809567875351061-24_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Quote-SA05537809567875351061-24_pdf.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Users\Admin\AppData\Local\Temp\Quote-SA05537809567875351061-24_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Quote-SA05537809567875351061-24_pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsrE446.tmp\System.dll

    Filesize

    11KB

    MD5

    ee260c45e97b62a5e42f17460d406068

    SHA1

    df35f6300a03c4d3d3bd69752574426296b78695

    SHA256

    e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

    SHA512

    a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

  • memory/1924-28-0x0000000002AE0000-0x0000000003D33000-memory.dmp

    Filesize

    18.3MB

  • memory/1924-29-0x0000000077301000-0x0000000077421000-memory.dmp

    Filesize

    1.1MB

  • memory/1924-30-0x0000000010004000-0x0000000010005000-memory.dmp

    Filesize

    4KB

  • memory/3148-31-0x00000000016E0000-0x0000000002933000-memory.dmp

    Filesize

    18.3MB

  • memory/3148-32-0x00000000016E0000-0x0000000002933000-memory.dmp

    Filesize

    18.3MB

  • memory/3148-33-0x0000000077388000-0x0000000077389000-memory.dmp

    Filesize

    4KB

  • memory/3148-34-0x00000000773A5000-0x00000000773A6000-memory.dmp

    Filesize

    4KB

  • memory/3148-47-0x00000000016E0000-0x0000000002933000-memory.dmp

    Filesize

    18.3MB

  • memory/3148-48-0x0000000000480000-0x00000000016D4000-memory.dmp

    Filesize

    18.3MB

  • memory/3148-50-0x0000000077301000-0x0000000077421000-memory.dmp

    Filesize

    1.1MB

  • memory/3148-49-0x0000000000480000-0x00000000016D4000-memory.dmp

    Filesize

    18.3MB

  • memory/3148-51-0x00000000016E0000-0x0000000002933000-memory.dmp

    Filesize

    18.3MB

  • memory/3148-52-0x0000000000480000-0x00000000004E0000-memory.dmp

    Filesize

    384KB

  • memory/3148-53-0x0000000035590000-0x0000000035628000-memory.dmp

    Filesize

    608KB

  • memory/3148-69-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-67-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-113-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-111-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-109-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-107-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-105-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-103-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-101-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-97-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-95-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-93-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-91-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-89-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-87-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-85-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-83-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-81-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-79-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-77-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-73-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-71-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-65-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-63-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-61-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-59-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-57-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-99-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-55-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-75-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-54-0x0000000035590000-0x0000000035622000-memory.dmp

    Filesize

    584KB

  • memory/3148-2118-0x0000000035700000-0x000000003572C000-memory.dmp

    Filesize

    176KB

  • memory/3148-2119-0x0000000035730000-0x000000003577C000-memory.dmp

    Filesize

    304KB

  • memory/3148-2120-0x0000000035940000-0x0000000035A20000-memory.dmp

    Filesize

    896KB

  • memory/3148-5146-0x0000000035AB0000-0x0000000035B16000-memory.dmp

    Filesize

    408KB

  • memory/3148-5147-0x0000000035E10000-0x00000000363B4000-memory.dmp

    Filesize

    5.6MB

  • memory/3148-5148-0x0000000035B60000-0x0000000035BF2000-memory.dmp

    Filesize

    584KB

  • memory/3148-5149-0x0000000036850000-0x0000000036862000-memory.dmp

    Filesize

    72KB

  • memory/3148-5150-0x0000000036910000-0x0000000036960000-memory.dmp

    Filesize

    320KB