Analysis

  • max time kernel
    150s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 10:20

General

  • Target

    33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97.exe

  • Size

    698KB

  • MD5

    4b7c6964bbdfdee992770567b303a31f

  • SHA1

    0d444f31d79f72a55def0f9b7679b5b37a29c597

  • SHA256

    33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97

  • SHA512

    f4790dabc8a013bafac72cfaa8bfb7ccb745590cf6aaff7a0498b3775858ae48a9f71fc4aa53827d764a4332b1f118f925dd6cec70dc7db3e50a79f71dfda181

  • SSDEEP

    12288:/7zMzuX0JUXu8pWeuvmGSGjh87DkUQMgAg:HYuX0JUXu8MHHSGjhGkUQ

Malware Config

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 6 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 10 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops desktop.ini file(s) 2 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.

  • Suspicious use of SetThreadContext 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97.exe
    "C:\Users\Admin\AppData\Local\Temp\33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2808
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "GoogleUpdate" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\WinApp\GoogleUpdate.exe.lnk"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3408
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "GoogleUpdate" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\WinApp\GoogleUpdate.exe.lnk"
        3⤵
        • Adds Run key to start application
        PID:2116
    • C:\Users\Admin\AppData\Local\Temp\33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97.exe
      "C:\Users\Admin\AppData\Local\Temp\33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:1880
      • C:\Users\Admin\AppData\Roaming\Windows Update.exe
        "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3220
        • C:\Users\Admin\AppData\Roaming\Windows Update.exe
          "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:5076
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
            5⤵
            • Accesses Microsoft Outlook accounts
            PID:2780
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:4356
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
            dw20.exe -x -s 2136
            5⤵
            • Drops file in Windows directory
            • Checks processor information in registry
            • Enumerates system info in registry
            • Suspicious use of AdjustPrivilegeToken
            PID:4700

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\SysInfo.txt
    Filesize

    102B

    MD5

    e9027e0b06726210c49955f1a48816ee

    SHA1

    af19815b02edf58bead15244782cc724e3f2a697

    SHA256

    479d8134b547bdf2ec16a0dc1e4276e360646d93e2bc891d577c2a97b535b9c3

    SHA512

    59c1e8fbc5d6df0995e41d17324db1fcbc85d8aaf3b214f3395c5a93038ad1ef0860c3c4f1f50a9f1ad5a61850f4a221b5b581c47ae0ea4d2e83d6d32c05123c

  • C:\Users\Admin\AppData\Local\Temp\holdermail.txt
    Filesize

    3KB

    MD5

    f94dc819ca773f1e3cb27abbc9e7fa27

    SHA1

    9a7700efadc5ea09ab288544ef1e3cd876255086

    SHA256

    a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

    SHA512

    72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

  • C:\Users\Admin\AppData\Roaming\Windows Update.exe
    Filesize

    698KB

    MD5

    4b7c6964bbdfdee992770567b303a31f

    SHA1

    0d444f31d79f72a55def0f9b7679b5b37a29c597

    SHA256

    33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97

    SHA512

    f4790dabc8a013bafac72cfaa8bfb7ccb745590cf6aaff7a0498b3775858ae48a9f71fc4aa53827d764a4332b1f118f925dd6cec70dc7db3e50a79f71dfda181

  • C:\Users\Admin\AppData\Roaming\Windows Update.exe
    Filesize

    698KB

    MD5

    4b7c6964bbdfdee992770567b303a31f

    SHA1

    0d444f31d79f72a55def0f9b7679b5b37a29c597

    SHA256

    33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97

    SHA512

    f4790dabc8a013bafac72cfaa8bfb7ccb745590cf6aaff7a0498b3775858ae48a9f71fc4aa53827d764a4332b1f118f925dd6cec70dc7db3e50a79f71dfda181

  • C:\Users\Admin\AppData\Roaming\Windows Update.exe
    Filesize

    698KB

    MD5

    4b7c6964bbdfdee992770567b303a31f

    SHA1

    0d444f31d79f72a55def0f9b7679b5b37a29c597

    SHA256

    33f644cbe1d6eab6b295d460cb7d7545b1092f7128457093f20859b361f02a97

    SHA512

    f4790dabc8a013bafac72cfaa8bfb7ccb745590cf6aaff7a0498b3775858ae48a9f71fc4aa53827d764a4332b1f118f925dd6cec70dc7db3e50a79f71dfda181

  • memory/1880-139-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/1880-137-0x0000000000400000-0x000000000048C000-memory.dmp
    Filesize

    560KB

  • memory/1880-136-0x0000000000000000-mapping.dmp
  • memory/1880-143-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/2116-135-0x0000000000000000-mapping.dmp
  • memory/2780-151-0x0000000000000000-mapping.dmp
  • memory/2780-155-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2780-154-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2780-152-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2808-132-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/2808-133-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/2808-138-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/3220-144-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/3220-148-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/3220-140-0x0000000000000000-mapping.dmp
  • memory/3408-134-0x0000000000000000-mapping.dmp
  • memory/4356-158-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4356-157-0x0000000000000000-mapping.dmp
  • memory/4356-160-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4356-161-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4356-163-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4700-164-0x0000000000000000-mapping.dmp
  • memory/5076-156-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/5076-145-0x0000000000000000-mapping.dmp
  • memory/5076-149-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB

  • memory/5076-165-0x0000000074E40000-0x00000000753F1000-memory.dmp
    Filesize

    5.7MB