Analysis

  • max time kernel
    49s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    02/05/2023, 12:01

General

  • Target

    RFQ#0003725812.pdf.exe

  • Size

    969KB

  • MD5

    d7a342009bfd76a907b3f2baf9acb1d8

  • SHA1

    4a909029a5f6fce74e7ae0c11897d44658027e34

  • SHA256

    c72e8271a4eb3c18cd2f83c50acd4d1b77f162be15b2011aa384eab178a7d51d

  • SHA512

    ee73044eead64b4c1231b246d432a134f6b64399ea82f4e3f4bf5a8c80f606354e239f696d3a12a7a3493e2aec0afe2301dbb9c1bc0f1ad613425ee5a1c9b30d

  • SSDEEP

    12288:b4mT/RcXtvyJdBQhXVQp/Dv4alfZqby13caYgd2DFW9Xmmd:b4C/6XtvWBmQp/T4gcaYgdGWB3d

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

95.214.27.226:6606

95.214.27.226:7707

95.214.27.226:8808

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 1 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\RFQ#0003725812.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ#0003725812.pdf.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1244

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\TarD947.tmp

          Filesize

          164KB

          MD5

          4ff65ad929cd9a367680e0e5b1c08166

          SHA1

          c0af0d4396bd1f15c45f39d3b849ba444233b3a2

          SHA256

          c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

          SHA512

          f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

        • memory/1244-54-0x0000000000660000-0x0000000000675000-memory.dmp

          Filesize

          84KB

        • memory/1244-55-0x0000000028260000-0x0000000028272000-memory.dmp

          Filesize

          72KB

        • memory/1244-56-0x00000000416A0000-0x0000000041720000-memory.dmp

          Filesize

          512KB

        • memory/1244-57-0x00000000416A0000-0x0000000041720000-memory.dmp

          Filesize

          512KB

        • memory/1244-75-0x0000000042390000-0x000000004240E000-memory.dmp

          Filesize

          504KB

        • memory/1244-96-0x0000000028400000-0x000000002840A000-memory.dmp

          Filesize

          40KB

        • memory/1244-97-0x0000000042410000-0x0000000042470000-memory.dmp

          Filesize

          384KB

        • memory/1244-98-0x0000000042510000-0x00000000425A0000-memory.dmp

          Filesize

          576KB