Analysis

  • max time kernel
    57s
  • max time network
    51s
  • platform
    windows10-1703_x64
  • resource
    win10-20240611-uk
  • resource tags

    arch:x64arch:x86image:win10-20240611-uklocale:uk-uaos:windows10-1703-x64systemwindows
  • submitted
    08/08/2024, 12:48

General

  • Target
    Server.exe
  • Size 175KB
  • Sample240808-p126batdnm
  • SHA256 1afc6f0b461fe194e24493a0c57c8320518ebbd50b74234caac0c578e6843380
  • MD5 SHA1 SHA512 SSDEEP

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/bot6494429721:AAFZ5aGg7XGnRClTicbjFHgBuAWHYq2zITI/sendMessage?chat_id=6234857847

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
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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) 9 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

  • Checks processor information in registry 2 TTPs 7 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Drops desktop.ini file(s)
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4368
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Wi-Fi Discovery
      • Suspicious use of WriteProcessMemory
      PID:1272
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4028
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show profile
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        PID:364
      • C:\Windows\SysWOW64\findstr.exe
        findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3720
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2260
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3904
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show networks mode=bssid
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:1484
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:440
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3460
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3460.0.1218536573\1753954514" -parentBuildID 20221007134813 -prefsHandle 1708 -prefMapHandle 1696 -prefsLen 20767 -prefMapSize 233414 -appDir "C:\Program Files\Mozilla Firefox\browser" - {0e6adf61-28f2-4b2a-87b1-24c007ac44be} 3460 "\\.\pipe\gecko-crash-server-pipe.3460" 1796 225ff0dd558 gpu
        3⤵
          PID:3348
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3460.1.157385489\1461042933" -parentBuildID 20221007134813 -prefsHandle 2124 -prefMapHandle 2120 -prefsLen 20848 -prefMapSize 233414 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {c2903282-5dd4-4695-9aae-51d1cb7c76d0} 3460 "\\.\pipe\gecko-crash-server-pipe.3460" 2152 225fb971c58 socket
          3⤵
            PID:1800
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3460.2.514188841\2044967124" -childID 1 -isForBrowser -prefsHandle 1580 -prefMapHandle 2840 -prefsLen 20951 -prefMapSize 233414 -jsInitHandle 1300 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {e8c79129-4541-4a0f-ba97-b971b841f484} 3460 "\\.\pipe\gecko-crash-server-pipe.3460" 3016 2258abadc58 tab
            3⤵
              PID:4892
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3460.3.869631027\2103091711" -childID 2 -isForBrowser -prefsHandle 3520 -prefMapHandle 3516 -prefsLen 26136 -prefMapSize 233414 -jsInitHandle 1300 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {8ea9ac86-df54-48b4-8eb9-daa97d947e02} 3460 "\\.\pipe\gecko-crash-server-pipe.3460" 3532 2258ba21b58 tab
              3⤵
                PID:1724
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3460.4.1966176498\1886670980" -childID 3 -isForBrowser -prefsHandle 4044 -prefMapHandle 3828 -prefsLen 26271 -prefMapSize 233414 -jsInitHandle 1300 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {006f9d45-38cc-42fc-90a4-83167453644d} 3460 "\\.\pipe\gecko-crash-server-pipe.3460" 4056 2258bebe758 tab
                3⤵
                  PID:3436
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3460.5.1266405280\1138692174" -childID 4 -isForBrowser -prefsHandle 5040 -prefMapHandle 5032 -prefsLen 26195 -prefMapSize 233414 -jsInitHandle 1300 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {387ef80f-711a-4de3-95f4-80247bd018a5} 3460 "\\.\pipe\gecko-crash-server-pipe.3460" 4948 2258ccd2058 tab
                  3⤵
                    PID:440
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3460.6.1471543359\826457425" -childID 5 -isForBrowser -prefsHandle 4960 -prefMapHandle 4888 -prefsLen 26195 -prefMapSize 233414 -jsInitHandle 1300 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {e79b8dfd-7fec-4644-b5bb-f81db7d908ba} 3460 "\\.\pipe\gecko-crash-server-pipe.3460" 4832 2258ccd3b58 tab
                    3⤵
                      PID:3832
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3460.7.1354349508\1983092733" -childID 6 -isForBrowser -prefsHandle 5284 -prefMapHandle 5288 -prefsLen 26195 -prefMapSize 233414 -jsInitHandle 1300 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {cb87000b-bdc0-46af-a127-987ab2281a74} 3460 "\\.\pipe\gecko-crash-server-pipe.3460" 5248 2258ccd2c58 tab
                      3⤵
                        PID:4000

                  Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        msgid.dat

                        • Path C:\Users\Admin\AppData\Local\231608184e03f43a514548b074a2ab7b\msgid.dat
                        • Size 1B
                        • SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
                        • MD5 SHA1 SHA512

                        Process.txt

                        • Path C:\Users\Admin\AppData\Local\57d34f843575040346c8c83cd408d430\Admin@GKUTWGDF_uk-UA\System\Process.txt
                        • Size 4KB
                        • SHA256 0b41061107ab7f9b92dfee320f5991574479ce6666e875761fa835c3bd43cfe4
                        • MD5 SHA1 SHA512 SSDEEP

                        activity-stream.discovery_stream.json.tmp

                        • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\2b7acdhd.default-release\activity-stream.discovery_stream.json.tmp
                        • Size 25KB
                        • SHA256 cac6be3c6012aaac021921ac30d2f91040879564c85b6d2d8a4183a63c6d52a3
                        • MD5 SHA1 SHA512 SSDEEP

                        asrouter.ftl

                        • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\2b7acdhd.default-release\settings\main\ms-language-packs\browser\newtab\asrouter.ftl
                        • Size 7KB
                        • SHA256 0ec0f16f92d876a9c1140d4c11e2b346a9292984d9a854360e54e99fdcd99cc0
                        • MD5 SHA1 SHA512 SSDEEP

                        data.safe.bin

                        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\2b7acdhd.default-release\datareporting\glean\db\data.safe.bin
                        • Size 2KB
                        • SHA256 f3bc0672de28d6e3acbe3fd62b7d30bbc5bc47c37ec6efcc00fb0574acbe3ea7
                        • MD5 SHA1 SHA512

                        e285fac2-53a2-4d10-a91d-d365bad7d808

                        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\2b7acdhd.default-release\datareporting\glean\pending_pings\e285fac2-53a2-4d10-a91d-d365bad7d808
                        • Size 746B
                        • SHA256 a46f393923aa3622aa6f1935004ff8540ebd7b534f2c2ddb6095f3132b7cbf84
                        • MD5 SHA1 SHA512

                        e78b9ef9-87af-4145-b768-20e14c2e1c66

                        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\2b7acdhd.default-release\datareporting\glean\pending_pings\e78b9ef9-87af-4145-b768-20e14c2e1c66
                        • Size 10KB
                        • SHA256 e876543c5670cc96b6919f22605f0cc99e7992a3550b0e44a6c7933d0d9f5d0f
                        • MD5 SHA1 SHA512 SSDEEP

                        prefs-1.js

                        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\2b7acdhd.default-release\prefs-1.js
                        • Size 6KB
                        • SHA256 bb25d5b2f28158c780fa9ca5e0f894e06cf9bf47e7b308e97ea42fd041169d82
                        • MD5 SHA1 SHA512 SSDEEP

                        prefs-1.js

                        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\2b7acdhd.default-release\prefs-1.js
                        • Size 6KB
                        • SHA256 881c2db8111942eaa34e39964872d838a02dc0a91831f3ad297ff795d6a33018
                        • MD5 SHA1 SHA512 SSDEEP

                        prefs.js

                        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\2b7acdhd.default-release\prefs.js
                        • Size 6KB
                        • SHA256 ac4bed6c8d3d78d8177eaaf7301bdf7abe790ca3002fc956c4d8e3a55c93e9d9
                        • MD5 SHA1 SHA512 SSDEEP

                        recovery.jsonlz4

                        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\2b7acdhd.default-release\sessionstore-backups\recovery.jsonlz4
                        • Size 1KB
                        • SHA256 2d337527d3f08141b098a60f2e43c78d8d78569254c261dc78938c7d1cd0b861
                        • MD5 SHA1 SHA512

                        memory/4368-116-0x0000000006230000-0x00000000062C2000-memory.dmp

                        memory/4368-130-0x00000000063E0000-0x00000000063F2000-memory.dmp

                        memory/4368-159-0x00000000735A0000-0x0000000073C8E000-memory.dmp

                        memory/4368-129-0x00000000735A0000-0x0000000073C8E000-memory.dmp

                        memory/4368-0-0x00000000735AE000-0x00000000735AF000-memory.dmp

                        memory/4368-3-0x0000000005460000-0x00000000054C6000-memory.dmp

                        memory/4368-2-0x00000000735A0000-0x0000000073C8E000-memory.dmp

                        memory/4368-1-0x0000000000AB0000-0x0000000000AE2000-memory.dmp

                        memory/4368-117-0x00000000735A0000-0x0000000073C8E000-memory.dmp

                        memory/4368-123-0x00000000735AE000-0x00000000735AF000-memory.dmp

                        memory/4368-122-0x0000000006330000-0x000000000633A000-memory.dmp

                        memory/4368-118-0x00000000067D0000-0x0000000006CCE000-memory.dmp