Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2024 22:01

General

  • Target

    a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe

  • Size

    569KB

  • MD5

    baafb44a3a3f70dd1e009c04b9c88297

  • SHA1

    25b542946dd20f80773387a44352696f58f76cba

  • SHA256

    a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402

  • SHA512

    1ebd9f5d3515a973a4c45cfbbdc3fb227f457d2fbba03873eefc397cf0da72a29a12887466b3e2795a90b2a3b8c95024319324f075275421f39eac8b49ed0f11

  • SSDEEP

    12288:f20IpfjSt64LnnhlgVRZ7K/Tk7SP0q6qKLnHEbpt26XE85RSKoTx:fPemtrLnY7ETMi07ZCU

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

194.5.97.229:1195

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#.

  • Asyncrat family
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
    "C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2748
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wHlcNFpFfEV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAD40.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2228
    • C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
      "C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2472

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2472-18-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2472-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2472-14-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2472-16-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2472-24-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2472-20-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2472-26-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2472-23-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2872-4-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

    Filesize

    4KB

  • memory/2872-6-0x0000000004B10000-0x0000000004B44000-memory.dmp

    Filesize

    208KB

  • memory/2872-1-0x0000000000360000-0x00000000003F4000-memory.dmp

    Filesize

    592KB

  • memory/2872-5-0x0000000074DC0000-0x00000000754AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2872-0-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

    Filesize

    4KB

  • memory/2872-3-0x0000000000760000-0x000000000076E000-memory.dmp

    Filesize

    56KB

  • memory/2872-2-0x0000000074DC0000-0x00000000754AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2872-27-0x0000000074DC0000-0x00000000754AE000-memory.dmp

    Filesize

    6.9MB