Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    10-12-2024 03:31

General

  • Target

    cafb60920939bd2079d96f2e6e73f87632bc15bd72998f864e8968f7aab9623b.exe

  • Size

    1.7MB

  • MD5

    40f8c17c136d4dc83b130c9467cf6dcc

  • SHA1

    e9b6049aa7da0af9718f2f4ae91653d9bac403bb

  • SHA256

    cafb60920939bd2079d96f2e6e73f87632bc15bd72998f864e8968f7aab9623b

  • SHA512

    6760a0752957535ec45ce3307e31569ac263eb73157d6a424d6e30647651a4e93db7c0378028d9e0ce07e65a357d2bb81047064ccda2f6a13fa7402ee7794c2d

  • SSDEEP

    49152:IkXhu5J6iLKcMu/FQHujIytryx1GLMfzhh9JHTJ6qyrBbL:I0i9/COjIhkMfzhhMf

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

205.209.109.10:4449

205.209.109.10:7723

Mutex

clgbfqzkkypxjps

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Async RAT payload 2 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cafb60920939bd2079d96f2e6e73f87632bc15bd72998f864e8968f7aab9623b.exe
    "C:\Users\Admin\AppData\Local\Temp\cafb60920939bd2079d96f2e6e73f87632bc15bd72998f864e8968f7aab9623b.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:2172

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabEEC4.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar1BCF.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/2172-0-0x0000000000820000-0x0000000000C82000-memory.dmp

    Filesize

    4.4MB

  • memory/2172-1-0x0000000000820000-0x0000000000C82000-memory.dmp

    Filesize

    4.4MB

  • memory/2172-2-0x0000000000820000-0x0000000000C82000-memory.dmp

    Filesize

    4.4MB

  • memory/2172-21-0x0000000000820000-0x0000000000C82000-memory.dmp

    Filesize

    4.4MB