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Analysis

  • max time kernel
    31s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    27/03/2023, 12:29

General

  • Target

    Invoice PI PL XtDEXae99_pdf.exe

  • Size

    529KB

  • MD5

    7ff4ca325678a568841cfd241169c0c8

  • SHA1

    43b28b061b86084d224eb664c3135aee641aff08

  • SHA256

    2366158b67d626bbab28ef335785c92b699270725ec193d1e813c6dba86f04f0

  • SHA512

    d55e3b6571c076db040563a6d1bcc9daa13a001213fc0fcdb054bcb93c0a4fa348c20e27699df6d6f073bd931fa4fcb49514c9a63e585e569cb76423f3491802

  • SSDEEP

    12288:CrEE/hTVFds4nL5vZMjCe2w7sGfl58WtSQ/RTTk0gm71:vEzFds4nVvZMee2wrfXVNsc

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 1 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 System32 directory 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • 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\Invoice PI PL XtDEXae99_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice PI PL XtDEXae99_pdf.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    PID:2008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nst85C.tmp\System.dll

    Filesize

    11KB

    MD5

    cf85183b87314359488b850f9e97a698

    SHA1

    6b6c790037eec7ebea4d05590359cb4473f19aea

    SHA256

    3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

    SHA512

    fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

  • memory/2008-77-0x0000000002F30000-0x0000000005FB7000-memory.dmp

    Filesize

    48.5MB

  • memory/2008-78-0x0000000002F30000-0x0000000005FB7000-memory.dmp

    Filesize

    48.5MB