Analysis

  • max time kernel
    21s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 00:02

General

  • Target

    OTP BULDER @ZerodayExploitware.exe

  • Size

    175KB

  • MD5

    0d421a91631c3c2cae6533bd32e2e595

  • SHA1

    9113e54ec2b864a4845cb14930aa60666e1a596a

  • SHA256

    e1df166da9ba07ad1a5b1a105eac585f04ea67a023cca16f54bdbfa97bb39dd2

  • SHA512

    1d677726303cb667c01d8d340f5632667c1929dd5965e7008eab2d1755a02823cff1f583ece6987085ed1eb28429afa2592e5f0b6b63a3bb8e9c17d77c69d8ad

  • SSDEEP

    3072:Ue8oX8Sb5KcXrtkkXmf/bDsvqtU+lLToChAP0UZ0b2gTIwAqE+Wpor:9Xtb5KcXr7XmfgqtjhAxZ0b2h

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/bot6381067446:AAEZEWH8wbF7Q1Kou81_S0sE6VwJZGJKneM/sendMessage?chat_id=5901231421

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
  • 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OTP BULDER @ZerodayExploitware.exe
    "C:\Users\Admin\AppData\Local\Temp\OTP BULDER @ZerodayExploitware.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:756
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:1720
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:2364
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:2152
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1452
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:356
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:1772

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

              Filesize

              344B

              MD5

              8d586a0c0befe32587a242c5efd5ff2b

              SHA1

              665219078863bc5f47a1465232b76ee633542c96

              SHA256

              ec5ffad5748585a32c7d199883e26a78a5c498bfe85f68cb5c4e6742caa3a4d7

              SHA512

              d445d90e406deb32ecd60de4b386c04450909b6ea48d741b9d0e78fddc614fd7c6fd8b431d3b614d2b6442dcb2ad77a87cd2c1ac6cbe2ecb3cc1841507046798

            • C:\Users\Admin\AppData\Local\Temp\Cab4C45.tmp

              Filesize

              68KB

              MD5

              29f65ba8e88c063813cc50a4ea544e93

              SHA1

              05a7040d5c127e68c25d81cc51271ffb8bef3568

              SHA256

              1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

              SHA512

              e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

            • C:\Users\Admin\AppData\Local\Temp\Tar4CC5.tmp

              Filesize

              177KB

              MD5

              435a9ac180383f9fa094131b173a2f7b

              SHA1

              76944ea657a9db94f9a4bef38f88c46ed4166983

              SHA256

              67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

              SHA512

              1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

            • C:\Users\Admin\AppData\Local\ed7cccb5b00bc48b099c27aa13cdebb9\msgid.dat

              Filesize

              1B

              MD5

              cfcd208495d565ef66e7dff9f98764da

              SHA1

              b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

              SHA256

              5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

              SHA512

              31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

            • C:\Users\Admin\AppData\Local\f926f842e15918c300a348af391f91e0\Admin@UOTHCPHQ_en-US\Browsers\Firefox\Bookmarks.txt

              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • memory/1904-0-0x00000000740DE000-0x00000000740DF000-memory.dmp

              Filesize

              4KB

            • memory/1904-1-0x0000000000080000-0x00000000000B2000-memory.dmp

              Filesize

              200KB

            • memory/1904-2-0x00000000740D0000-0x00000000747BE000-memory.dmp

              Filesize

              6.9MB

            • memory/1904-69-0x00000000740D0000-0x00000000747BE000-memory.dmp

              Filesize

              6.9MB

            • memory/1904-149-0x00000000740DE000-0x00000000740DF000-memory.dmp

              Filesize

              4KB