Analysis

  • max time kernel
    135s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-09-2024 06:10

General

  • Target

    4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe

  • Size

    411KB

  • MD5

    ab82eeb4d0bfc29e266388cc4c2d372b

  • SHA1

    836976baba2cba88f4a4c1238b22a466dbebea4a

  • SHA256

    4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4

  • SHA512

    987b8634a5ac0fc6234ee10b5b437bff3450e6f473afcfa2c17c41df6d2241765e8813076a699aaa22bd58a00493b4d7b9008b5a96b1c12fe82120c1983605d1

  • SSDEEP

    12288:JetLagza/unbxptENWXkVTTM5ct0bDMT:JettMMbxpSNMk12c20T

Malware Config

Signatures

  • Expiro, m0yv

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

  • Expiro payload 4 IoCs
  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe
    "C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:4836
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 292
      2⤵
      • Program crash
      PID:3500
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4836 -ip 4836
    1⤵
      PID:1312
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1296,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
      1⤵
        PID:780

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4836-0-0x0000000000BFB000-0x0000000000C8E000-memory.dmp

        Filesize

        588KB

      • memory/4836-1-0x0000000000B90000-0x0000000000C8E000-memory.dmp

        Filesize

        1016KB

      • memory/4836-2-0x0000000000BFB000-0x0000000000C8E000-memory.dmp

        Filesize

        588KB

      • memory/4836-3-0x0000000000B90000-0x0000000000C8E000-memory.dmp

        Filesize

        1016KB