Analysis

  • max time kernel
    59s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    05/05/2023, 01:26

General

  • Target

    35BC2054162C7288B55CAECC386D129B5B03E2A97985F.exe

  • Size

    899KB

  • MD5

    c011326ff5f864290617144c3dddcc88

  • SHA1

    257d10e95aeec5d8c63e4d1369c5cbf244568bf7

  • SHA256

    35bc2054162c7288b55caecc386d129b5b03e2a97985f659913338195be78491

  • SHA512

    894e43a4265c396b0721ea3fb99991047cc33aa36fc9f2f8fb47c5f66813a8226589b8ed045a1edc2279654cf3b933f413a434cf42f1fcd11f52ff3d6bd2a07a

  • SSDEEP

    12288:qeU8P7AlfzNA1Na+tIHBvD0hECB8dIxZZeyAnE/sTZ32jQnQeH//WmrHcjhS:q8Cf0a+6ghEC7XV+8Qnjf/WmTGhS

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

seznam.zapto.org:6606

seznam.zapto.org:7707

seznam.zapto.org:8808

milla.publicvm.com:6606

milla.publicvm.com:7707

milla.publicvm.com:8808

Mutex

ycwqfldbyykswbufnmb

Attributes
  • delay

    5

  • install

    true

  • install_file

    microsafte.exe

  • 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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\35BC2054162C7288B55CAECC386D129B5B03E2A97985F.exe
    "C:\Users\Admin\AppData\Local\Temp\35BC2054162C7288B55CAECC386D129B5B03E2A97985F.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 35BC2054162C7288B55CAECC386D129B5B03E2A97985F /tr '"C:\Users\Admin\AppData\Roaming\microsafte.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1440
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /ru system /rl highest /tn 35BC2054162C7288B55CAECC386D129B5B03E2A97985F /tr '"C:\Users\Admin\AppData\Roaming\microsafte.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:516
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpABF9.tmp.bat""
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:740
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:872
      • C:\Users\Admin\AppData\Roaming\microsafte.exe
        "C:\Users\Admin\AppData\Roaming\microsafte.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:432

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpABF9.tmp.bat

          Filesize

          154B

          MD5

          47d6f66c4cb05a3cfa0971179dd19972

          SHA1

          8fec647f8c206a4bc41d1780b92010d7f97b903c

          SHA256

          36af6bddcf9cfb0147f47da5f7a9dbf4d5ffe7e1bee8d3af34fb7be1303d2fce

          SHA512

          d89a68be09075545f31cc3f9acf10e5acfb1f8b70ee50184d3dff16e5d664a790543453f1f7e50596401c2802f4e6b912da037b785d7d1c95949a1d2ace31997

        • C:\Users\Admin\AppData\Local\Temp\tmpABF9.tmp.bat

          Filesize

          154B

          MD5

          47d6f66c4cb05a3cfa0971179dd19972

          SHA1

          8fec647f8c206a4bc41d1780b92010d7f97b903c

          SHA256

          36af6bddcf9cfb0147f47da5f7a9dbf4d5ffe7e1bee8d3af34fb7be1303d2fce

          SHA512

          d89a68be09075545f31cc3f9acf10e5acfb1f8b70ee50184d3dff16e5d664a790543453f1f7e50596401c2802f4e6b912da037b785d7d1c95949a1d2ace31997

        • C:\Users\Admin\AppData\Roaming\microsafte.exe

          Filesize

          899KB

          MD5

          c011326ff5f864290617144c3dddcc88

          SHA1

          257d10e95aeec5d8c63e4d1369c5cbf244568bf7

          SHA256

          35bc2054162c7288b55caecc386d129b5b03e2a97985f659913338195be78491

          SHA512

          894e43a4265c396b0721ea3fb99991047cc33aa36fc9f2f8fb47c5f66813a8226589b8ed045a1edc2279654cf3b933f413a434cf42f1fcd11f52ff3d6bd2a07a

        • C:\Users\Admin\AppData\Roaming\microsafte.exe

          Filesize

          899KB

          MD5

          c011326ff5f864290617144c3dddcc88

          SHA1

          257d10e95aeec5d8c63e4d1369c5cbf244568bf7

          SHA256

          35bc2054162c7288b55caecc386d129b5b03e2a97985f659913338195be78491

          SHA512

          894e43a4265c396b0721ea3fb99991047cc33aa36fc9f2f8fb47c5f66813a8226589b8ed045a1edc2279654cf3b933f413a434cf42f1fcd11f52ff3d6bd2a07a

        • \Users\Admin\AppData\Roaming\microsafte.exe

          Filesize

          899KB

          MD5

          c011326ff5f864290617144c3dddcc88

          SHA1

          257d10e95aeec5d8c63e4d1369c5cbf244568bf7

          SHA256

          35bc2054162c7288b55caecc386d129b5b03e2a97985f659913338195be78491

          SHA512

          894e43a4265c396b0721ea3fb99991047cc33aa36fc9f2f8fb47c5f66813a8226589b8ed045a1edc2279654cf3b933f413a434cf42f1fcd11f52ff3d6bd2a07a

        • memory/432-69-0x0000000000C20000-0x0000000000D08000-memory.dmp

          Filesize

          928KB

        • memory/432-70-0x0000000004850000-0x0000000004890000-memory.dmp

          Filesize

          256KB

        • memory/432-88-0x0000000004850000-0x0000000004890000-memory.dmp

          Filesize

          256KB

        • memory/1240-54-0x0000000000280000-0x0000000000368000-memory.dmp

          Filesize

          928KB

        • memory/1240-55-0x0000000000370000-0x0000000000382000-memory.dmp

          Filesize

          72KB

        • memory/1240-56-0x0000000004A10000-0x0000000004A50000-memory.dmp

          Filesize

          256KB