Analysis

  • max time kernel
    165s
  • max time network
    219s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-02-2025 09:47

General

  • Target

    RFQ-031117_PDF.exe

  • Size

    902KB

  • MD5

    cf9a10348e967ec63679969fd43fe3af

  • SHA1

    807abc926e32662848257320053a8d6004971796

  • SHA256

    cba3b06165b69aa5a54ae6f04eaae0564dfba9ee41e66f45d92174200a408177

  • SHA512

    70bfeaff022b623da3f06394f918638b025b1fe5e92226a9efbe4c39a79063433a93051e020b8d34fe2a29d58d1255b3688f4d065868ba9bec255832de2137ea

  • SSDEEP

    24576:OPx/Z540GDfK/FzexD/uJ+xmznQnb7O0lo9arWo8:ux/Z50K0juJ+17JlEarE

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Downloads MZ/PE file 1 IoCs
  • Loads dropped DLL 2 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
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 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 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • 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\RFQ-031117_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-031117_PDF.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • 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:3308
    • C:\Users\Admin\AppData\Local\Temp\RFQ-031117_PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\RFQ-031117_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:1332
  • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
    "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI2IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDQ1MzQ5MDYxIi8-PC9hcHA-PC9yZXF1ZXN0Pg
    1⤵
    • System Location Discovery: System Language Discovery
    • System Network Configuration Discovery: Internet Connection Discovery
    PID:4444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsdDB2E.tmp\System.dll

    Filesize

    11KB

    MD5

    3f176d1ee13b0d7d6bd92e1c7a0b9bae

    SHA1

    fe582246792774c2c9dd15639ffa0aca90d6fd0b

    SHA256

    fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

    SHA512

    0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Diathermance.lnk

    Filesize

    1KB

    MD5

    68ca869cf03119bd60eaf96c0fe4d3c5

    SHA1

    f38144fbae8ae11362034c3960fb473ab7d6733e

    SHA256

    e64c55f0bd20a5f677dcd93d4954477b8b347f78198b56f7164f00d8b72c949b

    SHA512

    54499209a919bbf425b79e98e5ea66d551e7e34b92c3b271620dd21b4f896eabdbba409edff62a85a594d27001fb517a95329238944b78ef3cfd9f842efcc6ec

  • memory/1332-334-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-305-0x00000000007F0000-0x0000000000850000-memory.dmp

    Filesize

    384KB

  • memory/1332-288-0x0000000001A50000-0x0000000004692000-memory.dmp

    Filesize

    44.3MB

  • memory/1332-303-0x00000000007F0000-0x0000000001A44000-memory.dmp

    Filesize

    18.3MB

  • memory/1332-332-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-304-0x0000000001A50000-0x0000000004692000-memory.dmp

    Filesize

    44.3MB

  • memory/1332-306-0x00000000374D0000-0x0000000037566000-memory.dmp

    Filesize

    600KB

  • memory/1332-312-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-310-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-354-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-366-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-364-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-362-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-360-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-358-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-330-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-352-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-350-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-348-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-346-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-344-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-342-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-340-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-336-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-295-0x0000000001A50000-0x0000000004692000-memory.dmp

    Filesize

    44.3MB

  • memory/1332-292-0x00000000007F0000-0x0000000001A44000-memory.dmp

    Filesize

    18.3MB

  • memory/1332-356-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-328-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-326-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-324-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-322-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-320-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-318-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-338-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-316-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-314-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-308-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-307-0x00000000374D0000-0x0000000037561000-memory.dmp

    Filesize

    580KB

  • memory/1332-2374-0x0000000037470000-0x00000000374BC000-memory.dmp

    Filesize

    304KB

  • memory/1332-2373-0x0000000035120000-0x000000003514C000-memory.dmp

    Filesize

    176KB

  • memory/1332-2379-0x0000000006330000-0x0000000006410000-memory.dmp

    Filesize

    896KB

  • memory/1332-5404-0x00000000376D0000-0x0000000037736000-memory.dmp

    Filesize

    408KB

  • memory/1332-5405-0x0000000037A30000-0x0000000037FD4000-memory.dmp

    Filesize

    5.6MB

  • memory/1332-5406-0x0000000038020000-0x00000000380B2000-memory.dmp

    Filesize

    584KB

  • memory/1332-5407-0x00000000384C0000-0x00000000384D2000-memory.dmp

    Filesize

    72KB

  • memory/1332-5408-0x0000000038500000-0x0000000038550000-memory.dmp

    Filesize

    320KB

  • memory/3308-283-0x0000000002F20000-0x0000000005B62000-memory.dmp

    Filesize

    44.3MB

  • memory/3308-284-0x0000000077431000-0x0000000077551000-memory.dmp

    Filesize

    1.1MB

  • memory/3308-285-0x0000000010004000-0x0000000010005000-memory.dmp

    Filesize

    4KB

  • memory/3308-287-0x0000000002F20000-0x0000000005B62000-memory.dmp

    Filesize

    44.3MB