Analysis

  • max time kernel
    177s
  • max time network
    204s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    07-05-2023 05:33

General

  • Target

    a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e.exe

  • Size

    692KB

  • MD5

    21a98f442dc499874eee65be09e23256

  • SHA1

    b220652614f3f561aa690ef5009c655bb31956d1

  • SHA256

    a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e

  • SHA512

    6dbd625a43d2da5bb9743a01e748c71c0654f9c71229ab1b5e4973a9b12f657f4d301f6a8cada418bad21009f0596b78cda4745fc896fd3bac02974c800401f0

  • SSDEEP

    12288:ZzgmdXs3Q7Rxyb+xM3A4qte6gvV696oYd+eufXpaIJYHjDDU:5gksGcC2TxN69HY+fp/S7U

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 12 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 12 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 16 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • 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 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e.exe
    "C:\Users\Admin\AppData\Local\Temp\a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1228
    • C:\Users\Admin\AppData\Local\Temp\a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e.exe
      "C:\Users\Admin\AppData\Local\Temp\a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Users\Admin\AppData\Roaming\Windows Update.exe
        "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:776
        • C:\Users\Admin\AppData\Roaming\Windows Update.exe
          "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
          4⤵
          • Deletes itself
          • 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:1916
          • 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:1964
          • 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\holderwb.txt"
            5⤵
              PID:1576

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      102B

      MD5

      a48d183869f02d762a76ed3dc87ad2e2

      SHA1

      19645475dd5cf06792b2c5476b8e01f7f0033a43

      SHA256

      d974bde76064760a372e6a2df2cd9bd23f80150ae0ceaa7ac9e6641e8ca0302a

      SHA512

      f2f0a0fdd3a761a1d53a52e3f92302699eae405ced9c31d4e07a6934815f00a64c01f489ffbc80112e858b9fef6b9b9998134399af328b25856868331a4232a4

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

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Local\Temp\svhost.exe
      Filesize

      85KB

      MD5

      2e5f1cf69f92392f8829fc9c9263ae9b

      SHA1

      97b9ca766bbbdaa8c9ec960dc41b598f7fad82a5

      SHA256

      51985a57e085d8b17042f0cdc1f905380b792854733eb3275fd8fce4e3bb886b

      SHA512

      f7e096dd9d0fa3a3c04c01bf229c4b344798a4c8b7b848588c1d78cb9fadfa9b1d0fd53c1fe74d191d5561e9eb551a4a3fc918363f119ea60024dd3d67c83883

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

      692KB

      MD5

      21a98f442dc499874eee65be09e23256

      SHA1

      b220652614f3f561aa690ef5009c655bb31956d1

      SHA256

      a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e

      SHA512

      6dbd625a43d2da5bb9743a01e748c71c0654f9c71229ab1b5e4973a9b12f657f4d301f6a8cada418bad21009f0596b78cda4745fc896fd3bac02974c800401f0

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

      692KB

      MD5

      21a98f442dc499874eee65be09e23256

      SHA1

      b220652614f3f561aa690ef5009c655bb31956d1

      SHA256

      a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e

      SHA512

      6dbd625a43d2da5bb9743a01e748c71c0654f9c71229ab1b5e4973a9b12f657f4d301f6a8cada418bad21009f0596b78cda4745fc896fd3bac02974c800401f0

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

      692KB

      MD5

      21a98f442dc499874eee65be09e23256

      SHA1

      b220652614f3f561aa690ef5009c655bb31956d1

      SHA256

      a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e

      SHA512

      6dbd625a43d2da5bb9743a01e748c71c0654f9c71229ab1b5e4973a9b12f657f4d301f6a8cada418bad21009f0596b78cda4745fc896fd3bac02974c800401f0

    • C:\Users\Admin\AppData\Roaming\WindowsUpdate.exe
      Filesize

      692KB

      MD5

      21a98f442dc499874eee65be09e23256

      SHA1

      b220652614f3f561aa690ef5009c655bb31956d1

      SHA256

      a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e

      SHA512

      6dbd625a43d2da5bb9743a01e748c71c0654f9c71229ab1b5e4973a9b12f657f4d301f6a8cada418bad21009f0596b78cda4745fc896fd3bac02974c800401f0

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

      692KB

      MD5

      21a98f442dc499874eee65be09e23256

      SHA1

      b220652614f3f561aa690ef5009c655bb31956d1

      SHA256

      a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e

      SHA512

      6dbd625a43d2da5bb9743a01e748c71c0654f9c71229ab1b5e4973a9b12f657f4d301f6a8cada418bad21009f0596b78cda4745fc896fd3bac02974c800401f0

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

      692KB

      MD5

      21a98f442dc499874eee65be09e23256

      SHA1

      b220652614f3f561aa690ef5009c655bb31956d1

      SHA256

      a9b51a1c8409470cf8204ec646aabdd91cf7aa424dfaeaf5e58447e65065925e

      SHA512

      6dbd625a43d2da5bb9743a01e748c71c0654f9c71229ab1b5e4973a9b12f657f4d301f6a8cada418bad21009f0596b78cda4745fc896fd3bac02974c800401f0

    • memory/1228-54-0x0000000000B60000-0x0000000000BA0000-memory.dmp
      Filesize

      256KB

    • memory/1228-67-0x0000000000B60000-0x0000000000BA0000-memory.dmp
      Filesize

      256KB

    • memory/1576-102-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1576-104-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1576-106-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1576-112-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1916-99-0x0000000000D80000-0x0000000000DC0000-memory.dmp
      Filesize

      256KB

    • memory/1916-83-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/1916-108-0x0000000000D80000-0x0000000000DC0000-memory.dmp
      Filesize

      256KB

    • memory/1916-90-0x0000000000D80000-0x0000000000DC0000-memory.dmp
      Filesize

      256KB

    • memory/1916-96-0x0000000000D80000-0x0000000000DC0000-memory.dmp
      Filesize

      256KB

    • memory/1964-100-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1964-109-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1964-101-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1964-97-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/2044-61-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/2044-68-0x0000000002400000-0x0000000002440000-memory.dmp
      Filesize

      256KB

    • memory/2044-63-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/2044-59-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/2044-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2044-58-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/2044-65-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/2044-66-0x0000000002400000-0x0000000002440000-memory.dmp
      Filesize

      256KB

    • memory/2044-57-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/2044-56-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB