Analysis

  • max time kernel
    26s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    01/05/2023, 05:34

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:856

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          62KB

          MD5

          3ac860860707baaf32469fa7cc7c0192

          SHA1

          c33c2acdaba0e6fa41fd2f00f186804722477639

          SHA256

          d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

          SHA512

          d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

        • C:\Users\Admin\AppData\Local\Temp\Tar504A.tmp

          Filesize

          164KB

          MD5

          4ff65ad929cd9a367680e0e5b1c08166

          SHA1

          c0af0d4396bd1f15c45f39d3b849ba444233b3a2

          SHA256

          c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

          SHA512

          f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

        • memory/856-54-0x0000000000620000-0x0000000000635000-memory.dmp

          Filesize

          84KB

        • memory/856-55-0x0000000028160000-0x0000000028172000-memory.dmp

          Filesize

          72KB

        • memory/856-56-0x00000000284F0000-0x0000000028570000-memory.dmp

          Filesize

          512KB

        • memory/856-57-0x00000000284F0000-0x0000000028570000-memory.dmp

          Filesize

          512KB

        • memory/856-75-0x00000000421F0000-0x000000004226E000-memory.dmp

          Filesize

          504KB

        • memory/856-96-0x0000000028650000-0x000000002865A000-memory.dmp

          Filesize

          40KB

        • memory/856-97-0x0000000042270000-0x00000000422D0000-memory.dmp

          Filesize

          384KB

        • memory/856-98-0x0000000043620000-0x00000000436B0000-memory.dmp

          Filesize

          576KB