Analysis

  • max time kernel
    147s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2024 10:09

General

  • Target

    Bank Swift and SOA PRN0072003410853_pdf.exe

  • Size

    737KB

  • MD5

    eb15bbefe683ef09c1c5c1bf5068dd71

  • SHA1

    0b613412103c088372fb19656152d21d6a5db027

  • SHA256

    8250c1a738d87ed5e8f7d743fa4b523a8c662c568f97b05de5712e9f2c39c647

  • SHA512

    efc5e6c51a7d815294bf6de694803165c7e56e456e1cf350539e0299f66af3d5dc346bd5d98df151f51ee4fd35dccad98a113d22354f6cae4cbf0d31d823c45f

  • SSDEEP

    12288:xlYZmcRHOys4LnDPb/RNXcIYSBZZKS2vHll7Q9hSCjJgroHaPdl7Fh:UmcdOt4LrXcAvKSErsOk+rddd3

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 1 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\Bank Swift and SOA PRN0072003410853_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Bank Swift and SOA PRN0072003410853_pdf.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:3304
    • C:\Users\Admin\AppData\Local\Temp\Bank Swift and SOA PRN0072003410853_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Bank Swift and SOA PRN0072003410853_pdf.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:3548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsrA2F9.tmp\System.dll

    Filesize

    11KB

    MD5

    fc90dfb694d0e17b013d6f818bce41b0

    SHA1

    3243969886d640af3bfa442728b9f0dff9d5f5b0

    SHA256

    7fe77ca13121a113c59630a3dba0c8aaa6372e8082393274da8f8608c4ce4528

    SHA512

    324f13aa7a33c6408e2a57c3484d1691ecee7c3c1366de2bb8978c8dc66b18425d8cab5a32d1702c13c43703e36148a022263de7166afdce141da2b01169f1c6

  • memory/3304-15-0x00000000032C0000-0x0000000004887000-memory.dmp

    Filesize

    21.8MB

  • memory/3304-16-0x00000000779D1000-0x0000000077AF1000-memory.dmp

    Filesize

    1.1MB

  • memory/3304-17-0x0000000010004000-0x0000000010005000-memory.dmp

    Filesize

    4KB

  • memory/3304-18-0x00000000032C0000-0x0000000004887000-memory.dmp

    Filesize

    21.8MB

  • memory/3548-19-0x0000000001710000-0x0000000002CD7000-memory.dmp

    Filesize

    21.8MB

  • memory/3548-20-0x0000000077A58000-0x0000000077A59000-memory.dmp

    Filesize

    4KB

  • memory/3548-21-0x0000000077A75000-0x0000000077A76000-memory.dmp

    Filesize

    4KB

  • memory/3548-34-0x0000000001710000-0x0000000002CD7000-memory.dmp

    Filesize

    21.8MB

  • memory/3548-35-0x00000000004B0000-0x0000000001704000-memory.dmp

    Filesize

    18.3MB

  • memory/3548-36-0x00000000004B0000-0x00000000004CE000-memory.dmp

    Filesize

    120KB

  • memory/3548-37-0x00000000359E0000-0x0000000035F84000-memory.dmp

    Filesize

    5.6MB

  • memory/3548-38-0x0000000033620000-0x00000000336BC000-memory.dmp

    Filesize

    624KB

  • memory/3548-39-0x0000000036390000-0x0000000036422000-memory.dmp

    Filesize

    584KB

  • memory/3548-40-0x0000000036430000-0x0000000036480000-memory.dmp

    Filesize

    320KB

  • memory/3548-42-0x00000000779D1000-0x0000000077AF1000-memory.dmp

    Filesize

    1.1MB

  • memory/3548-43-0x00000000365B0000-0x0000000036772000-memory.dmp

    Filesize

    1.8MB

  • memory/3548-44-0x0000000036840000-0x000000003684A000-memory.dmp

    Filesize

    40KB