Analysis

  • max time kernel
    77s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    01/05/2023, 11:28

General

  • Target
    Ta.exe
  • Size 1024.0MB
  • Sample230501-nlewsshb5s
  • SHA256 4b34980497ed08e0f3958cc83b63dbf5cd84879333d176e8df5910694ec728ae
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • Default

C2
  • 45.81.243.217:6606

  • 45.81.243.217:7707

  • 45.81.243.217:8808

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 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\Ta.exe
    "C:\Users\Admin\AppData\Local\Temp\Ta.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1200

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
        • Size 62KB
        • SHA256 d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904
        • MD5 SHA1 SHA512 SSDEEP

        Tar462C.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Tar462C.tmp
        • Size 164KB
        • SHA256 c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6
        • MD5 SHA1 SHA512 SSDEEP

        memory/1200-57-0x0000000041790000-0x0000000041810000-memory.dmp

        memory/1200-54-0x0000000002040000-0x0000000002055000-memory.dmp

        memory/1200-58-0x0000000041790000-0x0000000041810000-memory.dmp

        memory/1200-76-0x0000000041790000-0x0000000041810000-memory.dmp

        memory/1200-77-0x0000000041790000-0x0000000041810000-memory.dmp

        memory/1200-79-0x0000000042810000-0x000000004288E000-memory.dmp

        memory/1200-56-0x0000000041790000-0x0000000041810000-memory.dmp

        memory/1200-55-0x0000000028370000-0x0000000028382000-memory.dmp

        memory/1200-100-0x0000000041770000-0x000000004177A000-memory.dmp

        memory/1200-101-0x00000000437F0000-0x0000000043850000-memory.dmp

        memory/1200-102-0x0000000043850000-0x00000000438E0000-memory.dmp