General

  • Target

    Purchase Inquiry_NBI-20190123_pdf.rar

  • Size

    520KB

  • Sample

    230119-jm21hafd68

  • MD5

    6524b965bd8d8ab4c17ebae607759200

  • SHA1

    659c33b542a7b4656c4c142706d200bc94e2a208

  • SHA256

    de1f58a34c4ebcf1d15f7a46c522985d8b6980612fc5a91c0404ab229e949b97

  • SHA512

    ca773254ef9bc876c4bcab1ab20dae163653c6f3805e4075180ba76efd8af14949a3ee90ec5d66e78a1bd2bb50830ca90dbccbc6c76db05d8645d3d956fff644

  • SSDEEP

    12288:C4VV4FCQWQd2cpkpwPSLCxNTFHdT400CMvXJbja0wFf:C3FCu2lpoaCxpT400CMfJxw9

Malware Config

Targets

    • Target

      Purchase Inquiry_NBI-20190123_pdf.exe

    • Size

      814KB

    • MD5

      6e46c58d54f6f133e9b30a157fa46005

    • SHA1

      33d1dcb3fa5f4a957dac5f6c9fa81c6bba71e114

    • SHA256

      40ffe1b0d408557aab2b0c0399bd37102a62439d9d62caab05a4b7fe501b7382

    • SHA512

      ef1eef94d6a5f199f1ce6c00591585cdfbbbf2479e6e9e1f70ced47c9258bde12f98296d26fc4c3055f984d9ec2b493c1868857dd516524248873c2fa219a7cc

    • SSDEEP

      12288:/zHSwv6XXvvY1+H8yg8kI/W0GJKzoeFG0UrMcsCZ/Ug5X5UWoHY:mY6XXIUc0hGJKzrUryCZ/

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Checks QEMU agent file

      Checks presence of QEMU agent, possibly to detect virtualization.

    • Loads dropped DLL

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Tasks