Analysis

  • max time kernel
    121s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-10-2024 01:26

General

  • Target

    JUSTIFICANTE PAGO FRAS AGOSTO 2024 4302286.exe

  • Size

    687KB

  • MD5

    05cc45c89c721e509ea2b88068ec90d7

  • SHA1

    fbf54840c30725dda327d94b4da11380cbc1b11c

  • SHA256

    1375c9e14bd451ad69a74fa2c5480891537f3b63590b46ed9181cf88e9fa45a0

  • SHA512

    5abcb6502abc02a9732cea1eb9b957e64ba57d6a2b588d1c2092d8b3f419c66d719c7e09d7be28c828e4c3d7700aa7a5fc73a5e7b5bb28d2e18e93e0f0489178

  • SSDEEP

    12288:cQszxdK1xIHkD5/wHPZCrV0tHBTBT/SryWE8Nhh31nrDW8QjdlDjspRaFhCyiNu4:OwcPZx9Bl6eWfN/pD18d9uts4

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 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 7 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE PAGO FRAS AGOSTO 2024 4302286.exe
    "C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE PAGO FRAS AGOSTO 2024 4302286.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE PAGO FRAS AGOSTO 2024 4302286.exe
      "C:\Users\Admin\AppData\Local\Temp\JUSTIFICANTE PAGO FRAS AGOSTO 2024 4302286.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1284

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nsjAA64.tmp\System.dll

    Filesize

    11KB

    MD5

    4d3b19a81bd51f8ce44b93643a4e3a99

    SHA1

    35f8b00e85577b014080df98bd2c378351d9b3e9

    SHA256

    fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce

    SHA512

    b2ba9c961c0e1617f802990587a9000979ab5cc493ae2f8ca852eb43eeaf24916b0b29057dbff7d41a1797dfb2dce3db41990e8639b8f205771dbec3fd80f622

  • memory/1284-40-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/1284-18-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/1284-19-0x00000000779A0000-0x0000000077B49000-memory.dmp

    Filesize

    1.7MB

  • memory/1284-39-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/1284-41-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/1284-42-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/1284-48-0x0000000000400000-0x0000000001462000-memory.dmp

    Filesize

    16.4MB

  • memory/1880-14-0x00000000779A1000-0x0000000077AA2000-memory.dmp

    Filesize

    1.0MB

  • memory/1880-15-0x00000000779A0000-0x0000000077B49000-memory.dmp

    Filesize

    1.7MB

  • memory/1880-16-0x00000000035E0000-0x0000000004A0F000-memory.dmp

    Filesize

    20.2MB

  • memory/1880-17-0x00000000035E0000-0x0000000004A0F000-memory.dmp

    Filesize

    20.2MB

  • memory/1880-13-0x00000000035E0000-0x0000000004A0F000-memory.dmp

    Filesize

    20.2MB