Analysis

  • max time kernel
    28s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    16/03/2023, 11:29

General

  • Target

    s1.exe

  • Size

    960KB

  • MD5

    ae96901c11811285668f86dad68de4da

  • SHA1

    528c2ae843467d399a56efb245aa5e61ea749040

  • SHA256

    71f3d216164b0aea1f79a3dd85f54110811c6daa23a05d3e2b9559f660ffffd0

  • SHA512

    74319cc8562901ed54e471327dca016525d050ea582c8bc6b3cad25a1eabc493cc8a2a4af154701219d18dd7a0d2e9ecae8e07af6a0e22618b11b1bf15d3f468

  • SSDEEP

    24576:8pLyY1pSPiQuPDGBJOcsYgtb9Nn9KvGocPtdf:8puY1pSKQuPDGBJMYgtBN96nc

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

209.145.56.157:6606

209.145.56.157:7707

209.145.56.157:8808

Mutex

MUSIC

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\s1.exe
    "C:\Users\Admin\AppData\Local\Temp\s1.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1944

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\Tar3BC1.tmp

          Filesize

          161KB

          MD5

          be2bec6e8c5653136d3e72fe53c98aa3

          SHA1

          a8182d6db17c14671c3d5766c72e58d87c0810de

          SHA256

          1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

          SHA512

          0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

        • memory/1944-54-0x0000000001E00000-0x0000000001E16000-memory.dmp

          Filesize

          88KB

        • memory/1944-55-0x0000000027FA0000-0x0000000027FB2000-memory.dmp

          Filesize

          72KB

        • memory/1944-56-0x0000000041680000-0x0000000041700000-memory.dmp

          Filesize

          512KB

        • memory/1944-57-0x0000000041680000-0x0000000041700000-memory.dmp

          Filesize

          512KB

        • memory/1944-75-0x00000000430D0000-0x000000004314E000-memory.dmp

          Filesize

          504KB

        • memory/1944-96-0x00000000415C0000-0x00000000415CA000-memory.dmp

          Filesize

          40KB

        • memory/1944-97-0x0000000043150000-0x00000000431B0000-memory.dmp

          Filesize

          384KB

        • memory/1944-98-0x00000000431B0000-0x0000000043240000-memory.dmp

          Filesize

          576KB