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Analysis

  • max time kernel
    42s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24/09/2022, 14:24

General

  • Target

    receipt_001546037_pdf.exe

  • Size

    168KB

  • MD5

    ed26a5be5bfa6cfc95f1366e3efc60e1

  • SHA1

    735d11ea394dcf7cab701af8c63d046a5092cd2c

  • SHA256

    7dcbdd10f6e8cdf4c3d982ad15810b978a9b269f8ff525ec1e9187a4d0baf715

  • SHA512

    cb91472e9548fae2c0b4bc431dca8acef512e1cb9c5b7f2a0b47b97c1011c2f63025bcae3eda6dff9482ff9371fabc5e0ca2c348082716cb794a694dce3e76f1

  • SSDEEP

    3072:x/c/d6j3AaTzfYbFj2Q7M4ZmXIqPpM0xhaxC0dO8c5JZwrmVQt4rgjSy9HdcKSZN:x/c/43A4SFDJUPS0xN8OjRjqEgjSyz+N

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

Processes

  • C:\Users\Admin\AppData\Local\Temp\receipt_001546037_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\receipt_001546037_pdf.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    PID:1280

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsdE1E9.tmp\System.dll

    Filesize

    12KB

    MD5

    637e1fa13012a78922b6e98efc0b12e2

    SHA1

    8012d44e42cd6d813ea63d5ccbf190fe72e3c778

    SHA256

    703e17d30a91775f8ddc2648b537fc846fad6415589a503a4529c36f60a17439

    SHA512

    932ed6a52e89c4fa587a7c0c3903d69cf89a32dbd46ed8dcb251abb6c15192d92b1f624c31f0e4bd3e9bf95fc1a55fdb7cee9dd668e1b4f22ddb95786c063e96

  • \Users\Admin\AppData\Local\Temp\nsdE1E9.tmp\System.dll

    Filesize

    12KB

    MD5

    637e1fa13012a78922b6e98efc0b12e2

    SHA1

    8012d44e42cd6d813ea63d5ccbf190fe72e3c778

    SHA256

    703e17d30a91775f8ddc2648b537fc846fad6415589a503a4529c36f60a17439

    SHA512

    932ed6a52e89c4fa587a7c0c3903d69cf89a32dbd46ed8dcb251abb6c15192d92b1f624c31f0e4bd3e9bf95fc1a55fdb7cee9dd668e1b4f22ddb95786c063e96

  • memory/1280-54-0x0000000075811000-0x0000000075813000-memory.dmp

    Filesize

    8KB

  • memory/1280-57-0x0000000003710000-0x0000000003811000-memory.dmp

    Filesize

    1.0MB

  • memory/1280-58-0x0000000003710000-0x0000000003811000-memory.dmp

    Filesize

    1.0MB