Analysis

  • max time kernel
    146s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-12-2024 08:32

General

  • Target

    REQUESTFORQUOATIONANDPRICES0106-24_pdf.exe

  • Size

    1.1MB

  • MD5

    da770716c7b0b341d67ef18b167e0b2f

  • SHA1

    0efb141bd12fcdeded78fb0eb30b48f1377cde8b

  • SHA256

    6e64f28c7d7dc9f4f9590d3230de7a22dc5b982999c20dd5275cd0022405e131

  • SHA512

    342a178500baf69119eb5867cbb57dfb5da0fe8cb5ea8575a112c4836c0c250473e153c39ab32bd6d5c34a9b284179c352b2087436364618579036cde7020714

  • SSDEEP

    24576:mp7xzos/n1G90iLTUhItX4GlA18wgrkUgoAL7ewgFZSv+:Uxzog1GuMUlGPA34S2

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
  • 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 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\REQUESTFORQUOATIONANDPRICES0106-24_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\REQUESTFORQUOATIONANDPRICES0106-24_pdf.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:2184
    • C:\Users\Admin\AppData\Local\Temp\REQUESTFORQUOATIONANDPRICES0106-24_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\REQUESTFORQUOATIONANDPRICES0106-24_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:2836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsz788D.tmp\System.dll

    Filesize

    11KB

    MD5

    17ed1c86bd67e78ade4712be48a7d2bd

    SHA1

    1cc9fe86d6d6030b4dae45ecddce5907991c01a0

    SHA256

    bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

    SHA512

    0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

  • memory/2184-15-0x0000000003400000-0x0000000004695000-memory.dmp

    Filesize

    18.6MB

  • memory/2184-16-0x0000000076EC1000-0x0000000076FE1000-memory.dmp

    Filesize

    1.1MB

  • memory/2184-17-0x0000000010004000-0x0000000010005000-memory.dmp

    Filesize

    4KB

  • memory/2184-18-0x0000000003400000-0x0000000004695000-memory.dmp

    Filesize

    18.6MB

  • memory/2836-19-0x0000000001720000-0x00000000029B5000-memory.dmp

    Filesize

    18.6MB

  • memory/2836-20-0x0000000076F48000-0x0000000076F49000-memory.dmp

    Filesize

    4KB

  • memory/2836-21-0x0000000076F65000-0x0000000076F66000-memory.dmp

    Filesize

    4KB

  • memory/2836-34-0x00000000004C0000-0x0000000001714000-memory.dmp

    Filesize

    18.3MB

  • memory/2836-35-0x0000000001720000-0x00000000029B5000-memory.dmp

    Filesize

    18.6MB

  • memory/2836-36-0x00000000004C0000-0x00000000004DE000-memory.dmp

    Filesize

    120KB

  • memory/2836-37-0x00000000356A0000-0x0000000035C44000-memory.dmp

    Filesize

    5.6MB

  • memory/2836-38-0x0000000035C50000-0x0000000035CEC000-memory.dmp

    Filesize

    624KB

  • memory/2836-39-0x0000000036070000-0x0000000036102000-memory.dmp

    Filesize

    584KB

  • memory/2836-40-0x0000000036110000-0x0000000036160000-memory.dmp

    Filesize

    320KB

  • memory/2836-42-0x0000000076EC1000-0x0000000076FE1000-memory.dmp

    Filesize

    1.1MB

  • memory/2836-43-0x0000000036290000-0x0000000036452000-memory.dmp

    Filesize

    1.8MB

  • memory/2836-44-0x0000000036520000-0x000000003652A000-memory.dmp

    Filesize

    40KB