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Overview

overview

10

Static

static

10

RtlUpd.dll

windows7-x64

10

RtlUpd.dll

windows10-2004-x64

10

Resubmissions

24/12/2024, 06:27

241224-g7499asnhr 10

30/04/2024, 15:46

240430-s7lnpacb59 8

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/12/2024, 06:27

Sharing

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General

  • Target

    RtlUpd.dll

  • Size

    62KB

  • MD5

    c16bdc61bbc82e9668f8cee9cc5c94c5

  • SHA1

    c2f98475c7be3064e0b294ef546f57d3c3a1e267

  • SHA256

    6a195e6111c9a4b8c874d51937b53cd5b4b78efc32f7bb255012d05087586d8f

  • SHA512

    9337275916970bd88fb1de18959bf587e29147cf6198e3a242679b198cca26d7ddeeda2e893145058444e494048768ac33ce36e75a44fb84b4a0c50a3814faae

  • SSDEEP

    1536:yyMGpJvykUU0mVWUBmJyB1NjKOaSHGfuUF8u7J8NG3:nrpPUUXWXK1NoLfuQ8u7J8Nw

Score
10/10
warmcookiebackdoor

Malware Config

Extracted

Family

warmcookie

C2

80.66.88.146

Attributes
  • mutex

    32ac0087-89d0-4ea5-89af-26a8d08e87ce

  • user_agent

    Mozilla / 4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;.NET CLR 1.0.3705)

Signatures

  • Warmcookie family
    warmcookie
  • Warmcookie, Badspace

    Warmcookie aka Badspace is a backdoor written in C++.

    backdoorwarmcookie
  • Blocklisted process makes network request 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in Windows directory 1 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\RtlUpd.dll
    1⤵
    • Drops file in Windows directory
    PID:3736
  • C:\Windows\system32\rundll32.exe
    C:\Windows\system32\rundll32.exe "C:\ProgramData\RtlUpd\RtlUpd.dll",Start /p
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    PID:4648

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\ProgramData\RtlUpd\RtlUpd.dll
    Filesize

    62KB

    MD5

    c16bdc61bbc82e9668f8cee9cc5c94c5

    SHA1

    c2f98475c7be3064e0b294ef546f57d3c3a1e267

    SHA256

    6a195e6111c9a4b8c874d51937b53cd5b4b78efc32f7bb255012d05087586d8f

    SHA512

    9337275916970bd88fb1de18959bf587e29147cf6198e3a242679b198cca26d7ddeeda2e893145058444e494048768ac33ce36e75a44fb84b4a0c50a3814faae

    Download Submit

  • memory/3736-0-0x00007FFCD8930000-0x00007FFCD8948000-memory.dmp

    Filesize

    96KB

    Download

  • memory/4648-5-0x00007FFCCE670000-0x00007FFCCE688000-memory.dmp

    Filesize

    96KB

    Download