Analysis

  • max time kernel
    31s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    04/05/2023, 10:41

General

  • Target

    update.exe

  • Size

    969KB

  • MD5

    ef0ec9b3bf2edc84d23f92a16b6a8a67

  • SHA1

    8e4d871940df560a85332bfacac0b9766f865b9f

  • SHA256

    bbcfc7c262a04ae7291c4a1ea80253aaea3968a3c95d2b73b47016c298a7e281

  • SHA512

    31c3a9360c6dad1cc7b6db0626d5d9ffcf457592fb5b04f9d0f986ef15793ab9f3a2371e013fb6c666d4d9d9de3d68d01bab417059ded2efea0dc2b80cb88005

  • 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:832

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\Tar1E81.tmp

          Filesize

          164KB

          MD5

          4ff65ad929cd9a367680e0e5b1c08166

          SHA1

          c0af0d4396bd1f15c45f39d3b849ba444233b3a2

          SHA256

          c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

          SHA512

          f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

        • memory/832-54-0x00000000280C0000-0x00000000280D5000-memory.dmp

          Filesize

          84KB

        • memory/832-55-0x0000000028480000-0x0000000028492000-memory.dmp

          Filesize

          72KB

        • memory/832-56-0x0000000041530000-0x00000000415B0000-memory.dmp

          Filesize

          512KB

        • memory/832-57-0x0000000041530000-0x00000000415B0000-memory.dmp

          Filesize

          512KB

        • memory/832-75-0x0000000043310000-0x000000004338E000-memory.dmp

          Filesize

          504KB

        • memory/832-96-0x0000000041B30000-0x0000000041B3A000-memory.dmp

          Filesize

          40KB

        • memory/832-97-0x0000000041D90000-0x0000000041DF0000-memory.dmp

          Filesize

          384KB

        • memory/832-98-0x0000000043390000-0x0000000043420000-memory.dmp

          Filesize

          576KB

        • memory/832-99-0x0000000041530000-0x00000000415B0000-memory.dmp

          Filesize

          512KB