Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    22/01/2024, 19:31

General

  • Target

    UniAccChecker.exe

  • Size

    63KB

  • MD5

    e40435c6df1a16aad70fcb8582228bc3

  • SHA1

    8d5a1a1213b6680cfe3cb59aa0383ae8a91d5141

  • SHA256

    6148afd882ab17b41c7e5d92569d55426ef18bec0c45335529ca66c0ae19efdd

  • SHA512

    f7e33a06735e0297c06d3875010bc065471ce44ff86466cdf36c7773f4c3b1e9aef96c00efbf162976f695e50f06e7729f995a63a9de6335e0dcb36e7a19da2b

  • SSDEEP

    1536:UJ/t/dSJYUbdh9IM1b+uFg6CinpqKmY7:U3/YYUbd3Zg6Ci0z

Score
10/10

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3232

Mutex

吾吾owlΒiH1XNبmש吉E迪yاqCX

Attributes
  • delay

    1

  • install

    true

  • install_file

    GoogleChromeUpd.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Async RAT payload 3 IoCs
  • Executes dropped EXE 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\UniAccChecker.exe
    "C:\Users\Admin\AppData\Local\Temp\UniAccChecker.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "GoogleChromeUpd" /tr '"C:\Users\Admin\AppData\Roaming\GoogleChromeUpd.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2708
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "GoogleChromeUpd" /tr '"C:\Users\Admin\AppData\Roaming\GoogleChromeUpd.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:3004
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp475C.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2836
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2700
      • C:\Users\Admin\AppData\Roaming\GoogleChromeUpd.exe
        "C:\Users\Admin\AppData\Roaming\GoogleChromeUpd.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2316

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmp475C.tmp.bat

          Filesize

          159B

          MD5

          45f66034fdf30f45adbdc385d5e27095

          SHA1

          b17a30d1ef671e2b505256497fa533e76c4ad2b2

          SHA256

          bc4645b12d1acd6d2e18536a1d933739635ecaf0fc5c2c7bec2d9d56c1d89948

          SHA512

          777f05cfd73539cf12bb1b5c3a7ff660bd0254d15573e28b057dc48d8a901c82310474df4e0c0aa9212303fe9aeaa2a8153e06237b817d20e8758838fabe529f

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

          Filesize

          63KB

          MD5

          e40435c6df1a16aad70fcb8582228bc3

          SHA1

          8d5a1a1213b6680cfe3cb59aa0383ae8a91d5141

          SHA256

          6148afd882ab17b41c7e5d92569d55426ef18bec0c45335529ca66c0ae19efdd

          SHA512

          f7e33a06735e0297c06d3875010bc065471ce44ff86466cdf36c7773f4c3b1e9aef96c00efbf162976f695e50f06e7729f995a63a9de6335e0dcb36e7a19da2b

        • memory/2252-14-0x00000000778F0000-0x0000000077A99000-memory.dmp

          Filesize

          1.7MB

        • memory/2252-3-0x00000000778F0000-0x0000000077A99000-memory.dmp

          Filesize

          1.7MB

        • memory/2252-2-0x0000000000C80000-0x0000000000D00000-memory.dmp

          Filesize

          512KB

        • memory/2252-13-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

          Filesize

          9.9MB

        • memory/2252-0-0x0000000000E10000-0x0000000000E26000-memory.dmp

          Filesize

          88KB

        • memory/2252-1-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

          Filesize

          9.9MB

        • memory/2316-18-0x00000000008F0000-0x0000000000906000-memory.dmp

          Filesize

          88KB

        • memory/2316-19-0x000007FEF5250000-0x000007FEF5C3C000-memory.dmp

          Filesize

          9.9MB

        • memory/2316-20-0x000000001B2A0000-0x000000001B320000-memory.dmp

          Filesize

          512KB

        • memory/2316-21-0x00000000778F0000-0x0000000077A99000-memory.dmp

          Filesize

          1.7MB

        • memory/2316-22-0x000007FEF5250000-0x000007FEF5C3C000-memory.dmp

          Filesize

          9.9MB

        • memory/2316-23-0x000000001B2A0000-0x000000001B320000-memory.dmp

          Filesize

          512KB

        • memory/2316-24-0x00000000778F0000-0x0000000077A99000-memory.dmp

          Filesize

          1.7MB