Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-04-2024 17:40

General

  • Target

    f15e92c34dd8adfcd471d726e88292d6698217f05f1d2bcce8193eb2536f817c.exe

  • Size

    233KB

  • MD5

    0c86fa308bfa22e93d0f226fbf24cfc1

  • SHA1

    44e97a05345b3d946609e4ff68ace4f7f9687645

  • SHA256

    f15e92c34dd8adfcd471d726e88292d6698217f05f1d2bcce8193eb2536f817c

  • SHA512

    b10d7f88f047317fb04d6e107c2dcc4ba010e01ddee3782c3c2c0a7784f816a99313ccd19f9dd500683f2dd11a5d79d9be6a0c804a81d704509a51f14a0f30ac

  • SSDEEP

    6144:PDubaBBOBIIj6HLLYLCYJqvc1DRyxIgbllU0ahTfHbz8SL0eYuvKp+9:KbaiJgMzhzn8SL0ed

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot5215153309:AAFl-kpoi4o1bb0vo3E7M5J31FqbdDfGYhE/sendMessage?chat_id=5238027457

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#.

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 8 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f15e92c34dd8adfcd471d726e88292d6698217f05f1d2bcce8193eb2536f817c.exe
    "C:\Users\Admin\AppData\Local\Temp\f15e92c34dd8adfcd471d726e88292d6698217f05f1d2bcce8193eb2536f817c.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3064
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4232
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:4160
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:2264
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:4372
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4128
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:3040
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:2496
              • C:\Windows\SysWOW64\schtasks.exe
                "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Admin\AppData\Local\Temp\f15e92c34dd8adfcd471d726e88292d6698217f05f1d2bcce8193eb2536f817c.exe"
                2⤵
                • Creates scheduled task(s)
                PID:4664

            Network

            MITRE ATT&CK Matrix ATT&CK v13

            Execution

            Scheduled Task/Job

            1
            T1053

            Persistence

            Scheduled Task/Job

            1
            T1053

            Privilege Escalation

            Scheduled Task/Job

            1
            T1053

            Credential Access

            Unsecured Credentials

            1
            T1552

            Credentials In Files

            1
            T1552.001

            Discovery

            Query Registry

            2
            T1012

            System Information Discovery

            3
            T1082

            Collection

            Data from Local System

            1
            T1005

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\9ef2a5a91a55e8fa5595770733a70474\Admin@PTMYDVMK_en-US\Browsers\Firefox\Bookmarks.txt
              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • C:\Users\Admin\AppData\Local\9ef2a5a91a55e8fa5595770733a70474\Admin@PTMYDVMK_en-US\System\Process.txt
              Filesize

              4KB

              MD5

              d7233e30a1c07180c4bbe811e1c87cac

              SHA1

              be9233b4f412e068656243d905f303271d0c2d0f

              SHA256

              3906dc8302c96115a6b9ceca533ee793bc363f978d7b5f12eee6d042e12669da

              SHA512

              5bd93e62086c2de357cac8cfa62a6aac94d1680c8718d48dbff5ccaf7b0162b48ae1a0f691173136f98cf0939e38a9e83f686f1d2a1c48b2390a1d40f9fd6148

            • C:\Users\Admin\AppData\Local\d59023f8c267a03fe203bc024a3606eb\msgid.dat
              Filesize

              1B

              MD5

              cfcd208495d565ef66e7dff9f98764da

              SHA1

              b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

              SHA256

              5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

              SHA512

              31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

            • memory/3064-3-0x0000000005080000-0x0000000005090000-memory.dmp
              Filesize

              64KB

            • memory/3064-4-0x0000000005EE0000-0x0000000006484000-memory.dmp
              Filesize

              5.6MB

            • memory/3064-5-0x0000000005A10000-0x0000000005AA2000-memory.dmp
              Filesize

              584KB

            • memory/3064-0-0x00000000007B0000-0x00000000007F0000-memory.dmp
              Filesize

              256KB

            • memory/3064-2-0x00000000050C0000-0x0000000005126000-memory.dmp
              Filesize

              408KB

            • memory/3064-153-0x0000000005080000-0x0000000005090000-memory.dmp
              Filesize

              64KB

            • memory/3064-158-0x0000000006680000-0x000000000668A000-memory.dmp
              Filesize

              40KB

            • memory/3064-1-0x0000000075120000-0x00000000758D0000-memory.dmp
              Filesize

              7.7MB

            • memory/3064-164-0x0000000075120000-0x00000000758D0000-memory.dmp
              Filesize

              7.7MB

            • memory/3064-165-0x0000000005080000-0x0000000005090000-memory.dmp
              Filesize

              64KB

            • memory/3064-166-0x00000000075D0000-0x00000000075DA000-memory.dmp
              Filesize

              40KB

            • memory/3064-167-0x0000000005080000-0x0000000005090000-memory.dmp
              Filesize

              64KB