Analysis

  • max time kernel
    121s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    21-06-2024 14:14

General

  • Target

    PG73830273-RT8939933-106573737-WA.exe

  • Size

    700KB

  • MD5

    61d83cd9dcb9599726ac8a7237854537

  • SHA1

    962d76027061ed0e1fc13df2235f2d17a441b591

  • SHA256

    d862de550b07302770f3b05b441c57c75dff0425fe41b7981ecff7386049e24b

  • SHA512

    381c34cac16f20293c9c74a802043d2f6b231e2556a0af2e56f86ce94ffa4abb1a10ad51a1bb8a5de69e71aad5c551a95735e153296beb946b7cdac4fe092bd5

  • SSDEEP

    12288:ceSB3+wgWlty8g1DI+VZG1SWSRezMRFLrdcdMANPKKvkR:ceSZgWl8X1DIgG1lSPRLWMANpq

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

zaragoza.ddns.net:5480

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_file

    fwqoouQWEGr.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

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

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

  • 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 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe
    "C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2156
    • 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\PG73830273-RT8939933-106573737-WA.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2292
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pBJOGuhiQV.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1236
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pBJOGuhiQV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7040.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2988
    • C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe
      "C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe"
      2⤵
        PID:2064
      • C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe
        "C:\Users\Admin\AppData\Local\Temp\PG73830273-RT8939933-106573737-WA.exe"
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3004

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Command and Scripting Interpreter

    1
    T1059

    PowerShell

    1
    T1059.001

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Persistence

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Privilege Escalation

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp7040.tmp
      Filesize

      1KB

      MD5

      6dd117c67955c659134790113ab745dd

      SHA1

      39ad2b3ec580e68e70b99fa832309a2758a0dd91

      SHA256

      356510e032f2adcb2c4fd0a1fded1568b0aae5929b5824b3a069dd961cf9df77

      SHA512

      5e7643ef4b01e02cf559320db82b407bd498ad5330a06be4d50377693eb04b12bf7d30011410689769e3a26dea989b0598254d6cc2f2b3a147032a8ce2429b75

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\MKD9VX6D4YCLMNEOP1S4.temp
      Filesize

      7KB

      MD5

      0e7e5d2c05b1028f0287931512ede5f7

      SHA1

      35adb6d73b3d271bc57aa9cd1e95afe0f8a954e4

      SHA256

      4fffced9a994c33c5f2e15a2f85aec6adccb3b23619959f02229510a4b4f3ace

      SHA512

      9634912e3cdbe64a8c928ab617a3ba1b501585324b08110c73fc6c5b409e6569c627918340a3900237f69d1f2196756003b79ea36246c82b8aae58b2e72b78e5

    • memory/2156-31-0x0000000074C90000-0x000000007537E000-memory.dmp
      Filesize

      6.9MB

    • memory/2156-1-0x0000000001260000-0x0000000001312000-memory.dmp
      Filesize

      712KB

    • memory/2156-2-0x0000000074C90000-0x000000007537E000-memory.dmp
      Filesize

      6.9MB

    • memory/2156-3-0x0000000000610000-0x000000000062A000-memory.dmp
      Filesize

      104KB

    • memory/2156-4-0x0000000000670000-0x0000000000680000-memory.dmp
      Filesize

      64KB

    • memory/2156-5-0x00000000011F0000-0x0000000001244000-memory.dmp
      Filesize

      336KB

    • memory/2156-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp
      Filesize

      4KB

    • memory/3004-18-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/3004-30-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/3004-28-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/3004-27-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/3004-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/3004-24-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/3004-22-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/3004-20-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB