Analysis

  • max time kernel
    146s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    28-09-2024 14:03

General

  • Target

    Server.exe

  • Size

    920KB

  • MD5

    b36dc7511b95419ea3491a60597280ed

  • SHA1

    8caa07eda2ef7f77c09df3d6d9eb99190c8d6c7b

  • SHA256

    d98c45c9a36b59116af3e7311570fbf2fd18a70e669a980a3da5a1d06b1b5179

  • SHA512

    ba71404887ecd9602fd2ac6dfb4870925e0dd16b1a7c1d5c64101d6be08a20af255655679b1ce7acc11562bab464bbdd146efcad44ff67115c9df0d23d304ca0

  • SSDEEP

    12288:4MSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V94iwQiKDKqxAs:4nsJ39LyjbJkQFMhmC+6GD94hKeqf

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/bot7510720859:AAHJ07lkxNWZwwJs6SC36WS0jVG9IR6m3pM/sendMessage?chat_id=6059920057

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 8 IoCs
  • Async RAT payload 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 11 IoCs
  • Looks up external IP address via web service 2 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 12 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 19 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 4 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 4 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2688
    • C:\Users\Admin\AppData\Local\Temp\._cache_Server.exe
      "C:\Users\Admin\AppData\Local\Temp\._cache_Server.exe"
      2⤵
      • Executes dropped EXE
      • 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:2972
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        • Suspicious use of WriteProcessMemory
        PID:2852
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2584
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          4⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Wi-Fi Discovery
          PID:108
        • C:\Windows\SysWOW64\findstr.exe
          findstr All
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2732
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2108
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show networks mode=bssid
          4⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:2344
    • C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2920
      • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
        "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
        3⤵
        • Executes dropped EXE
        • 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:2572
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Wi-Fi Discovery
          • Suspicious use of WriteProcessMemory
          PID:2600
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2688
          • C:\Windows\SysWOW64\netsh.exe
            netsh wlan show profile
            5⤵
            • Event Triggered Execution: Netsh Helper DLL
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Wi-Fi Discovery
            PID:2724
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2608
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2376
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2524
          • C:\Windows\SysWOW64\netsh.exe
            netsh wlan show networks mode=bssid
            5⤵
            • Event Triggered Execution: Netsh Helper DLL
            • System Location Discovery: System Language Discovery
            PID:2780
  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /automation -Embedding
    1⤵
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2632

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Synaptics\Synaptics.exe

    Filesize

    920KB

    MD5

    b36dc7511b95419ea3491a60597280ed

    SHA1

    8caa07eda2ef7f77c09df3d6d9eb99190c8d6c7b

    SHA256

    d98c45c9a36b59116af3e7311570fbf2fd18a70e669a980a3da5a1d06b1b5179

    SHA512

    ba71404887ecd9602fd2ac6dfb4870925e0dd16b1a7c1d5c64101d6be08a20af255655679b1ce7acc11562bab464bbdd146efcad44ff67115c9df0d23d304ca0

  • C:\Users\Admin\AppData\Local\3f28c8ba5a2e94d77dc0bda0758cbe3d\Admin@MXQFNXLT_en-US\Browsers\Firefox\Bookmarks.txt

    Filesize

    105B

    MD5

    2e9d094dda5cdc3ce6519f75943a4ff4

    SHA1

    5d989b4ac8b699781681fe75ed9ef98191a5096c

    SHA256

    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

    SHA512

    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

  • C:\Users\Admin\AppData\Local\7ffaf4120136c1e8490d30d4b4396f08\msgid.dat

    Filesize

    1B

    MD5

    cfcd208495d565ef66e7dff9f98764da

    SHA1

    b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

    SHA256

    5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

    SHA512

    31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

  • C:\Users\Admin\AppData\Local\8facf49a219857d5975cce288155de4d\Admin@MXQFNXLT_en-US\System\Process.txt

    Filesize

    523B

    MD5

    95d475d12bd8f2f0a6f3ced3d109eb87

    SHA1

    cb334de8ef91e0e120806be1a25fe299180093a9

    SHA256

    3da6b1e77b2f651cc8965cbc827e9e911b5a506d3fdd6818b16a8d009813c562

    SHA512

    1a15a9bcfe7b2546d80e7479ad9823219335b4a4d6652ce16aa88a85c275b5a7b0f419d1cec5b1bceda67de59713431f34f1330411c33736203a2ee365514b94

  • C:\Users\Admin\AppData\Local\Temp\4IvJBKAT.xlsm

    Filesize

    17KB

    MD5

    e566fc53051035e1e6fd0ed1823de0f9

    SHA1

    00bc96c48b98676ecd67e81a6f1d7754e4156044

    SHA256

    8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

    SHA512

    a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

  • C:\Users\Admin\AppData\Local\Temp\places.raw

    Filesize

    5.0MB

    MD5

    13cd3dc80ad94c33c6b0aa087e917694

    SHA1

    30818dd4f9ba1c238f1828c35350fab0d3d38022

    SHA256

    c09805aec6fe8822572673e7fb38a81c6394e74a28dc7b62e843d9e19cbb9cc6

    SHA512

    8d671bbeacb2a54adfec2bd841b617c0a63e571393831bc7508792222b834a2b7d746415b9906a133b5d581a76b2c283f6eed8468f4a71b9a175c2ad9e254874

  • C:\Users\Admin\AppData\Local\Temp\tmp10A.tmp.dat

    Filesize

    92KB

    MD5

    f98745d81e8b84f39630844a63afc1ee

    SHA1

    d7977c2dab5de25630f7d869f9b16a8502cd3bb3

    SHA256

    9c34e13f0d2852fb4a8a53a4727a59d24691a507edb6ff1965024a6147799a83

    SHA512

    e6b1bf12139e627d6aa2b25c9d7e8ebab1e86fc3025655bf88bc735413f55b10490f0237b8d11fd5db0eb6045f6176e93228c70d8e940a62ea4324816c31a3dd

  • C:\Users\Admin\AppData\Local\Temp\tmp11C.tmp.dat

    Filesize

    148KB

    MD5

    90a1d4b55edf36fa8b4cc6974ed7d4c4

    SHA1

    aba1b8d0e05421e7df5982899f626211c3c4b5c1

    SHA256

    7cf3e9e8619904e72ea6608cc43e9b6c9f8aa2af02476f60c2b3daf33075981c

    SHA512

    ea0838be754e1258c230111900c5937d2b0788f90bbf7c5f82b2ceda7868e50afb86c301f313267eaa912778da45755560b5434885521bf915967a7863922ae2

  • \Users\Admin\AppData\Local\Temp\._cache_Server.exe

    Filesize

    175KB

    MD5

    14b15cea169536afebbef45c29ac005b

    SHA1

    8f8a085f45aaf1babdbeb5beb7ef75db9a6451ef

    SHA256

    3a8e7fcf4ecdf5c6f45d05d2003f561d65ed7959e181beb2cfc55e60a4717396

    SHA512

    ef3c7c6ea00e1d0472d6797cdb5d5c462dcfd00fb14a5c34afdef0dd84d1c258a1f44a570c376236c7fc7a8d6a1a49941294ec30ad3edc04438db5cfbdc4957d

  • memory/2572-39-0x0000000000A90000-0x0000000000AC2000-memory.dmp

    Filesize

    200KB

  • memory/2632-40-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2688-28-0x0000000000400000-0x00000000004EC000-memory.dmp

    Filesize

    944KB

  • memory/2688-0-0x0000000000220000-0x0000000000221000-memory.dmp

    Filesize

    4KB

  • memory/2920-205-0x0000000000400000-0x00000000004EC000-memory.dmp

    Filesize

    944KB

  • memory/2920-224-0x0000000000400000-0x00000000004EC000-memory.dmp

    Filesize

    944KB

  • memory/2920-253-0x0000000000400000-0x00000000004EC000-memory.dmp

    Filesize

    944KB

  • memory/2972-206-0x0000000072EBE000-0x0000000072EBF000-memory.dmp

    Filesize

    4KB

  • memory/2972-18-0x0000000072EBE000-0x0000000072EBF000-memory.dmp

    Filesize

    4KB

  • memory/2972-19-0x00000000013B0000-0x00000000013E2000-memory.dmp

    Filesize

    200KB