Resubmissions

04/10/2024, 16:44

241004-t8yv3syhpd10

27/09/2024, 16:54

240927-vepkzsvbre10

27/09/2024, 16:44

240927-t86wpavard10

04/08/2024, 18:04

240804-wnq1vawbpg10

03/08/2024, 17:26

240803-vzvbzazekn10

03/08/2024, 16:14

240803-tpp4tsshqa10

03/08/2024, 15:52

240803-tbarzsseqc10

31/07/2024, 19:40

240731-ydk3yszdpq10

31/07/2024, 10:53

240731-my145atfmf10

Analysis

  • max time kernel
    15s
  • max time network
    20s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    03/08/2024, 15:52

General

  • Target
    611cf2be6752c173be1328ea47cc8ea736bc3bda9030da617390b23afa955b47.exe
  • Size 280KB
  • Sample240803-tbarzsseqc
  • SHA256 611cf2be6752c173be1328ea47cc8ea736bc3bda9030da617390b23afa955b47
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • 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.

  • Deletes itself 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) 5 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.

  • Enumerates physical storage devices 1 TTPs

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

  • 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 14 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.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\611cf2be6752c173be1328ea47cc8ea736bc3bda9030da617390b23afa955b47.exe
    "C:\Users\Admin\AppData\Local\Temp\611cf2be6752c173be1328ea47cc8ea736bc3bda9030da617390b23afa955b47.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:2376
    • 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:2796
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2384
      • 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:1656
      • C:\Windows\SysWOW64\findstr.exe
        findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2628
    • 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:2436
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1132
      • 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:2372
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Roaming\BatchSelf.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2072
      • C:\Windows\SysWOW64\chcp.com
        chcp 1251
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2504
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 0 &Del 611cf2be6752c173be1328ea47cc8ea736bc3bda9030da617390b23afa955b47.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1736
      • C:\Windows\SysWOW64\choice.exe
        choice /C Y /N /D Y /T 0
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1796
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 1 &Del C:\Users\Admin\AppData\Local\Temp\611cf2be6752c173be1328ea47cc8ea736bc3bda9030da617390b23afa955b47.exe
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\choice.exe
        choice /C Y /N /D Y /T 1
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1628

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        tmpC1A1.tmp.dat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpC1A1.tmp.dat
        • Size 148KB
        • SHA256 7cf3e9e8619904e72ea6608cc43e9b6c9f8aa2af02476f60c2b3daf33075981c
        • MD5 SHA1 SHA512 SSDEEP

        tmpC1A2.tmp.dat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpC1A2.tmp.dat
        • Size 92KB
        • SHA256 a101a238346d9df0fe89b33f45436042d92878d75c5528ad0b8e201b91db0402
        • MD5 SHA1 SHA512 SSDEEP

        tmpC1B5.tmp.dat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpC1B5.tmp.dat
        • Size 46KB
        • SHA256 522cad95d3fa6ebb3274709b8d09bbb1ca37389d0a924cd29e934a75aa04c6c9
        • MD5 SHA1 SHA512 SSDEEP

        BatchSelf.bat

        • Path C:\Users\Admin\AppData\Roaming\BatchSelf.bat
        • Size 203B
        • SHA256 25d837fb18794858fc5a0ddc1ae536faae69db5f70ffed38ae1227e14e56393b
        • MD5 SHA1 SHA512

        memory/2376-0-0x000000007435E000-0x000000007435F000-memory.dmp

        memory/2376-1-0x0000000000F80000-0x0000000000FCC000-memory.dmp

        memory/2376-2-0x0000000074350000-0x0000000074A3E000-memory.dmp

        memory/2376-79-0x0000000074350000-0x0000000074A3E000-memory.dmp

        memory/2376-108-0x0000000000610000-0x0000000000640000-memory.dmp

        memory/2376-171-0x0000000074350000-0x0000000074A3E000-memory.dmp