Overview

overview

10

Static

static

3

6e6303664d...6N.exe

windows7-x64

10

6e6303664d...6N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    95s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2025, 01:37 UTC

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General

  • Target

    6e6303664d5ae0ae56349425076e4ca8bd13d2d9b581cbcff0840be76dde3f86N.exe

  • Size

    225KB

  • MD5

    79de87ddeb557ac099b57aa413196260

  • SHA1

    785d0626b5b30bc60640b818441049c714cbe864

  • SHA256

    6e6303664d5ae0ae56349425076e4ca8bd13d2d9b581cbcff0840be76dde3f86

  • SHA512

    666eb0ba600d4c5ac714773297f25bdf330b518ff789c009004bce8c4031b876720a102a2ffe208c1e2bac0909a4ff5f002b5763f1d6aa34ba2a2012f07bb2eb

  • SSDEEP

    3072:bywpSkrPPTEh07/YE4c9pwvGBYNHgcCfOnCKdggXRBOfI27B1hkVnYY4kmfI/nbW:2w0APr9jfmhg72rggBEdB1hMlHfUh

Score
10/10
expirobackdoordiscovery

Malware Config

Signatures

  • Expiro family
    expiro
  • Expiro, m0yv

    Expiro aka m0yv is a multi-functional backdoor written in C++.

    backdoorexpiro
  • Expiro payload 1 IoCs
    backdoor
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e6303664d5ae0ae56349425076e4ca8bd13d2d9b581cbcff0840be76dde3f86N.exe
    "C:\Users\Admin\AppData\Local\Temp\6e6303664d5ae0ae56349425076e4ca8bd13d2d9b581cbcff0840be76dde3f86N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:4480
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 432
      2⤵
      • Program crash
      PID:1788
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4480 -ip 4480
    1⤵
      PID:2180

    Network

    • flag-us
      DNS
      217.106.137.52.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      217.106.137.52.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      134.130.81.91.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      134.130.81.91.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      140.32.126.40.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      140.32.126.40.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      ctldl.windowsupdate.com
      Remote address:
      8.8.8.8:53
      Request
      ctldl.windowsupdate.com
      IN A
      Response
      ctldl.windowsupdate.com
      IN CNAME
      ctldl.windowsupdate.com.delivery.microsoft.com
      ctldl.windowsupdate.com.delivery.microsoft.com
      IN CNAME
      wu-b-net.trafficmanager.net
      wu-b-net.trafficmanager.net
      IN CNAME
      bg.microsoft.map.fastly.net
      bg.microsoft.map.fastly.net
      IN A
      199.232.214.172
      bg.microsoft.map.fastly.net
      IN A
      199.232.210.172
    • flag-us
      DNS
      95.221.229.192.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      95.221.229.192.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      133.211.185.52.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      133.211.185.52.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      197.87.175.4.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      197.87.175.4.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      18.31.95.13.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      18.31.95.13.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      172.210.232.199.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      172.210.232.199.in-addr.arpa
      IN PTR
      Response
    • flag-us
      DNS
      31.243.111.52.in-addr.arpa
      Remote address:
      8.8.8.8:53
      Request
      31.243.111.52.in-addr.arpa
      IN PTR
      Response
    No results found
    • 8.8.8.8:53
      217.106.137.52.in-addr.arpa
      dns
      73 B
       147 B
       1
      1

      DNS Request

      217.106.137.52.in-addr.arpa

    • 8.8.8.8:53
      134.130.81.91.in-addr.arpa
      dns
      72 B
       147 B
       1
      1

      DNS Request

      134.130.81.91.in-addr.arpa

    • 8.8.8.8:53
      140.32.126.40.in-addr.arpa
      dns
      141 B
       395 B
       2
      2

      DNS Request

      140.32.126.40.in-addr.arpa

      DNS Request

      ctldl.windowsupdate.com

      DNS Response

      199.232.214.172
      199.232.210.172

    • 8.8.8.8:53
      95.221.229.192.in-addr.arpa
      dns
      73 B
       144 B
       1
      1

      DNS Request

      95.221.229.192.in-addr.arpa

    • 8.8.8.8:53
      133.211.185.52.in-addr.arpa
      dns
      73 B
       147 B
       1
      1

      DNS Request

      133.211.185.52.in-addr.arpa

    • 8.8.8.8:53
      197.87.175.4.in-addr.arpa
      dns
      71 B
       157 B
       1
      1

      DNS Request

      197.87.175.4.in-addr.arpa

    • 8.8.8.8:53
      18.31.95.13.in-addr.arpa
      dns
      70 B
       144 B
       1
      1

      DNS Request

      18.31.95.13.in-addr.arpa

    • 8.8.8.8:53
      172.210.232.199.in-addr.arpa
      dns
      74 B
       128 B
       1
      1

      DNS Request

      172.210.232.199.in-addr.arpa

    • 8.8.8.8:53
      31.243.111.52.in-addr.arpa
      dns
      72 B
       158 B
       1
      1

      DNS Request

      31.243.111.52.in-addr.arpa

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • memory/4480-0-0x0000000001000000-0x0000000001087000-memory.dmp

      Filesize

      540KB

      Download

    • memory/4480-1-0x0000000001000000-0x0000000001087000-memory.dmp

      Filesize

      540KB

      Download

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