Analysis

  • max time kernel
    24s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    01/05/2023, 05:33

General

  • Target

    update.exe

  • Size

    1024.0MB

  • MD5

    266a9e038cfb90db7fa5d45282dac72d

  • SHA1

    6bf5ebe90c764e7d82c6c8e75c2ce3418dd923e0

  • SHA256

    4f67eda04defdf40355ab17ff4d72f0270f6265ad39f918ecab8a11727832e22

  • SHA512

    1358982cb90e763c88338c1a90c24e2b46ea7f521e4023a9a02ef5d9d1b802035808d9d055e9c0f297f33d7c099fd4e8b6fe1b5be9e0d38919a680262f8227ae

  • SSDEEP

    12288:84mT/RcXtvyJdBQhXVQpPDv4aloZqby13caYgd2DBAm:84C/6XtvWBmQpPTXgcaYgdCA

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

addimq.duckdns.org:7878

addimq.duckdns.org:9909

addimq.duckdns.org:6568

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Async RAT payload 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\update.exe
    "C:\Users\Admin\AppData\Local\Temp\update.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1424

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

          Filesize

          61KB

          MD5

          e71c8443ae0bc2e282c73faead0a6dd3

          SHA1

          0c110c1b01e68edfacaeae64781a37b1995fa94b

          SHA256

          95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

          SHA512

          b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

        • C:\Users\Admin\AppData\Local\Temp\Tar6927.tmp

          Filesize

          161KB

          MD5

          be2bec6e8c5653136d3e72fe53c98aa3

          SHA1

          a8182d6db17c14671c3d5766c72e58d87c0810de

          SHA256

          1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

          SHA512

          0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

        • memory/1424-54-0x0000000000610000-0x0000000000625000-memory.dmp

          Filesize

          84KB

        • memory/1424-55-0x00000000280F0000-0x0000000028102000-memory.dmp

          Filesize

          72KB

        • memory/1424-56-0x0000000041540000-0x00000000415C0000-memory.dmp

          Filesize

          512KB

        • memory/1424-57-0x0000000041540000-0x00000000415C0000-memory.dmp

          Filesize

          512KB

        • memory/1424-75-0x0000000041F00000-0x0000000041F7E000-memory.dmp

          Filesize

          504KB

        • memory/1424-96-0x0000000041530000-0x000000004153A000-memory.dmp

          Filesize

          40KB

        • memory/1424-97-0x0000000042000000-0x0000000042060000-memory.dmp

          Filesize

          384KB

        • memory/1424-98-0x0000000042060000-0x00000000420F0000-memory.dmp

          Filesize

          576KB