Analysis

  • max time kernel
    45s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/09/2024, 11:45

General

  • Target

    rat.exe

  • Size

    1.6MB

  • MD5

    be830082457d9fc658309f95a07099da

  • SHA1

    8fcc5988cb62925e26c5f3567223fff79efa351e

  • SHA256

    f06316c624961051e89bfa9d6a2cd647e2749006eb2a867cac1976667055f3b4

  • SHA512

    af6d0264d77674fab722e6d0d268027a6053d942acfc9a8f3b94f4230842761411c081c9a78cc9c58865a4bc4d14680e963468db8d9a0ef69846cf4e9b87b430

  • SSDEEP

    24576:Yi2Q9NXw2/wPOjdGxY2rJxkqjVnlqud+/2P+A+ZecdyFoBkkAqmZywm0n:HTq24GjdGSiJxkqXfd+/9AqYanCLm

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1288466233993334785/bvXUkJru6bM4LZMznPzmSqzB7BV8e49Q0i4gDuNVtyNDqrIuEAvj0zzmaOdSBD0yMLcb

Signatures

  • Stealerium

    An open source info stealer written in C# first seen in May 2022.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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.

  • 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.

  • Program crash 1 IoCs
  • 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 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rat.exe
    "C:\Users\Admin\AppData\Local\Temp\rat.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:2088
    • 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:2932
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1992
      • 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:1312
      • C:\Windows\SysWOW64\findstr.exe
        findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2784
    • 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:544
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1148
      • 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:2332
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2088 -s 2408
      2⤵
      • Program crash
      PID:2912
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2464
  • C:\Windows\helppane.exe
    C:\Windows\helppane.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2472

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\c3924a0028d5a45dd034bd2c27140c9c\Admin@ZQABOPWE_en-US\Browsers\Firefox\Bookmarks.txt

          Filesize

          105B

          MD5

          2e9d094dda5cdc3ce6519f75943a4ff4

          SHA1

          5d989b4ac8b699781681fe75ed9ef98191a5096c

          SHA256

          c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

          SHA512

          d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

        • C:\Users\Admin\AppData\Local\c3924a0028d5a45dd034bd2c27140c9c\Admin@ZQABOPWE_en-US\Directories\Startup.txt

          Filesize

          24B

          MD5

          68c93da4981d591704cea7b71cebfb97

          SHA1

          fd0f8d97463cd33892cc828b4ad04e03fc014fa6

          SHA256

          889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483

          SHA512

          63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402

        • C:\Users\Admin\AppData\Local\c3924a0028d5a45dd034bd2c27140c9c\Admin@ZQABOPWE_en-US\Directories\Videos.txt

          Filesize

          23B

          MD5

          1fddbf1169b6c75898b86e7e24bc7c1f

          SHA1

          d2091060cb5191ff70eb99c0088c182e80c20f8c

          SHA256

          a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733

          SHA512

          20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d

        • C:\Users\Admin\AppData\Local\c3924a0028d5a45dd034bd2c27140c9c\Admin@ZQABOPWE_en-US\System\Apps.txt

          Filesize

          6KB

          MD5

          f0b543321a7fabed411dc2789aca46a9

          SHA1

          db9db9e3c0918e06d013a4f40dee6f4bbed49f82

          SHA256

          2cbd1a0a7515cebd7a2a210b1ef3078e3f6084b736c09c414470b1299c71a7d4

          SHA512

          0b05936257ab479a2d1d0e6b7d55d76353513d1e40c70fb5f5a96410e323865382a8d8d833ec4940b036f4dfde6265ec805fec4247386d0d6566b53b1fc77447

        • C:\Users\Admin\AppData\Local\c3924a0028d5a45dd034bd2c27140c9c\Admin@ZQABOPWE_en-US\System\ProductKey.txt

          Filesize

          29B

          MD5

          cad6c6bee6c11c88f5e2f69f0be6deb7

          SHA1

          289d74c3bebe6cca4e1d2e084482ad6d21316c84

          SHA256

          dc288491fadc4a85e71085890e3d6a7746e99a317cd5ef09a30272dfb10398c0

          SHA512

          e02cf6bff8b4ebd7a1346ecb1667be36c3ef7415fff77c3b9cfb370f3d0dc861f74d3e0e49065699850ba6cc025cd68d14ceb73f3b512c2a9b28873a69aff097

        • memory/2088-8-0x0000000000A60000-0x0000000000A68000-memory.dmp

          Filesize

          32KB

        • memory/2088-6-0x0000000000A10000-0x0000000000A36000-memory.dmp

          Filesize

          152KB

        • memory/2088-7-0x00000000009C0000-0x00000000009CA000-memory.dmp

          Filesize

          40KB

        • memory/2088-0-0x000000007491E000-0x000000007491F000-memory.dmp

          Filesize

          4KB

        • memory/2088-9-0x0000000002010000-0x000000000202E000-memory.dmp

          Filesize

          120KB

        • memory/2088-5-0x0000000004960000-0x0000000004A00000-memory.dmp

          Filesize

          640KB

        • memory/2088-4-0x0000000074910000-0x0000000074FFE000-memory.dmp

          Filesize

          6.9MB

        • memory/2088-120-0x0000000005AF0000-0x0000000005B6A000-memory.dmp

          Filesize

          488KB

        • memory/2088-3-0x000000007491E000-0x000000007491F000-memory.dmp

          Filesize

          4KB

        • memory/2088-2-0x0000000074910000-0x0000000074FFE000-memory.dmp

          Filesize

          6.9MB

        • memory/2088-1-0x0000000000A70000-0x0000000000C06000-memory.dmp

          Filesize

          1.6MB

        • memory/2088-178-0x0000000007000000-0x00000000070B2000-memory.dmp

          Filesize

          712KB

        • memory/2088-190-0x0000000074910000-0x0000000074FFE000-memory.dmp

          Filesize

          6.9MB