Analysis

  • max time kernel
    145s
  • max time network
    131s
  • 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 03:30

General

  • Target

    5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe

  • Size

    956KB

  • MD5

    2275024102505f0997f027c71970750d

  • SHA1

    10a4feb8f216f86caa840ff85ba02c85e00e8665

  • SHA256

    5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a

  • SHA512

    1ebf7e71b121a3102d2de3c756761fe7e2efae90b2561912886da7d8a43fe9fcf29322d5f239cd21614847d9ec3c519b2d2a1213252cf3e1ee5dc622d4e24182

  • SSDEEP

    24576:9jwKCNRVJ13mzBqtejjs3RgG9vWciasTKafa0aULP:V1CLFyqtukfiaJaCUP

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.

  • 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\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe
    "C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe"
    1⤵
    • 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:2432
    • C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.exe
      "C:\Users\Admin\AppData\Local\Temp\5fd6c5f71c6fdda582775fa5822b5ed0af1e5dc9431c06d453752a6bcbbe359a.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:4456

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsa60B0.tmp\System.dll

    Filesize

    12KB

    MD5

    0d7ad4f45dc6f5aa87f606d0331c6901

    SHA1

    48df0911f0484cbe2a8cdd5362140b63c41ee457

    SHA256

    3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

    SHA512

    c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

  • memory/2432-13-0x00000000032A0000-0x0000000004118000-memory.dmp

    Filesize

    14.5MB

  • memory/2432-14-0x0000000077211000-0x0000000077331000-memory.dmp

    Filesize

    1.1MB

  • memory/2432-15-0x0000000073F05000-0x0000000073F06000-memory.dmp

    Filesize

    4KB

  • memory/2432-16-0x00000000032A0000-0x0000000004118000-memory.dmp

    Filesize

    14.5MB

  • memory/4456-17-0x00000000016E0000-0x0000000002558000-memory.dmp

    Filesize

    14.5MB

  • memory/4456-18-0x0000000077298000-0x0000000077299000-memory.dmp

    Filesize

    4KB

  • memory/4456-19-0x00000000772B5000-0x00000000772B6000-memory.dmp

    Filesize

    4KB

  • memory/4456-32-0x00000000016E0000-0x0000000002558000-memory.dmp

    Filesize

    14.5MB

  • memory/4456-33-0x0000000000480000-0x00000000016D4000-memory.dmp

    Filesize

    18.3MB

  • memory/4456-34-0x0000000077211000-0x0000000077331000-memory.dmp

    Filesize

    1.1MB

  • memory/4456-35-0x0000000000480000-0x000000000049E000-memory.dmp

    Filesize

    120KB

  • memory/4456-36-0x0000000035250000-0x00000000357F4000-memory.dmp

    Filesize

    5.6MB

  • memory/4456-37-0x0000000035800000-0x000000003589C000-memory.dmp

    Filesize

    624KB

  • memory/4456-38-0x0000000035C00000-0x0000000035C92000-memory.dmp

    Filesize

    584KB

  • memory/4456-39-0x0000000035CA0000-0x0000000035CF0000-memory.dmp

    Filesize

    320KB

  • memory/4456-41-0x0000000035E40000-0x0000000036002000-memory.dmp

    Filesize

    1.8MB

  • memory/4456-42-0x00000000360C0000-0x00000000360CA000-memory.dmp

    Filesize

    40KB