Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    10-05-2023 14:35

General

  • Target

    ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff.exe

  • Size

    692KB

  • MD5

    c9dfc04b8b0c393c1fb835b1f2f20ea4

  • SHA1

    5d91d43f27be4899646ce6cd9108c28976f03fab

  • SHA256

    ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff

  • SHA512

    f05d077693cb94eeb820127541ce06258e5dbb79aa0a9d0c613db820ed24036875377092d25a8af3ffec34159ab519d5175ccd02dcde41e2114468256552cf25

  • SSDEEP

    12288:ZzgmdXs3Q7Rxyb+xM3A4qte6gvV696oYd+eufXpaIJYHjDD:5gksGcC2TxN69HY+fp/S7

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 9 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 8 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 12 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\ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff.exe
    "C:\Users\Admin\AppData\Local\Temp\ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:920
    • C:\Users\Admin\AppData\Local\Temp\ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff.exe
      "C:\Users\Admin\AppData\Local\Temp\ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1284
      • 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:1092
        • 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:1884
          • 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:1960
          • 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:1552

    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

      2f3cfdf389a50321ce0411d1152c7479

      SHA1

      ed5fff3dd00c8c8524d61ccce54bc6304763f98d

      SHA256

      fcde0b00598042df8701144a8abc441fe3fceb1502edd552f67841399873c5e3

      SHA512

      454f6df4c602a4eedc277a54ca4c539ffc955a5a83365edf89836c5966be8d1bde68a0d65f17a09015bd519e88ae40b273c07531aa829b6e09b303ec1a801275

    • 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

      c9dfc04b8b0c393c1fb835b1f2f20ea4

      SHA1

      5d91d43f27be4899646ce6cd9108c28976f03fab

      SHA256

      ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff

      SHA512

      f05d077693cb94eeb820127541ce06258e5dbb79aa0a9d0c613db820ed24036875377092d25a8af3ffec34159ab519d5175ccd02dcde41e2114468256552cf25

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

      692KB

      MD5

      c9dfc04b8b0c393c1fb835b1f2f20ea4

      SHA1

      5d91d43f27be4899646ce6cd9108c28976f03fab

      SHA256

      ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff

      SHA512

      f05d077693cb94eeb820127541ce06258e5dbb79aa0a9d0c613db820ed24036875377092d25a8af3ffec34159ab519d5175ccd02dcde41e2114468256552cf25

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

      692KB

      MD5

      c9dfc04b8b0c393c1fb835b1f2f20ea4

      SHA1

      5d91d43f27be4899646ce6cd9108c28976f03fab

      SHA256

      ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff

      SHA512

      f05d077693cb94eeb820127541ce06258e5dbb79aa0a9d0c613db820ed24036875377092d25a8af3ffec34159ab519d5175ccd02dcde41e2114468256552cf25

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

      692KB

      MD5

      c9dfc04b8b0c393c1fb835b1f2f20ea4

      SHA1

      5d91d43f27be4899646ce6cd9108c28976f03fab

      SHA256

      ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff

      SHA512

      f05d077693cb94eeb820127541ce06258e5dbb79aa0a9d0c613db820ed24036875377092d25a8af3ffec34159ab519d5175ccd02dcde41e2114468256552cf25

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

      692KB

      MD5

      c9dfc04b8b0c393c1fb835b1f2f20ea4

      SHA1

      5d91d43f27be4899646ce6cd9108c28976f03fab

      SHA256

      ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff

      SHA512

      f05d077693cb94eeb820127541ce06258e5dbb79aa0a9d0c613db820ed24036875377092d25a8af3ffec34159ab519d5175ccd02dcde41e2114468256552cf25

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

      692KB

      MD5

      c9dfc04b8b0c393c1fb835b1f2f20ea4

      SHA1

      5d91d43f27be4899646ce6cd9108c28976f03fab

      SHA256

      ba794fac4af75d1fb23270a772d17d36b2d84606cffb38a991e41a22a21b7cff

      SHA512

      f05d077693cb94eeb820127541ce06258e5dbb79aa0a9d0c613db820ed24036875377092d25a8af3ffec34159ab519d5175ccd02dcde41e2114468256552cf25

    • memory/920-54-0x0000000000450000-0x0000000000490000-memory.dmp
      Filesize

      256KB

    • memory/1092-88-0x00000000001B0000-0x00000000001F0000-memory.dmp
      Filesize

      256KB

    • memory/1284-65-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1284-63-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1284-61-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1284-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/1284-66-0x00000000006E0000-0x0000000000720000-memory.dmp
      Filesize

      256KB

    • memory/1284-59-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1284-58-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1284-57-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1284-56-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1552-105-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1552-109-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1552-103-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1884-89-0x0000000000220000-0x0000000000260000-memory.dmp
      Filesize

      256KB

    • memory/1884-100-0x0000000000220000-0x0000000000260000-memory.dmp
      Filesize

      256KB

    • memory/1884-95-0x0000000000220000-0x0000000000260000-memory.dmp
      Filesize

      256KB

    • memory/1884-81-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/1884-110-0x0000000000220000-0x0000000000260000-memory.dmp
      Filesize

      256KB

    • memory/1960-99-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1960-102-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1960-98-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1960-96-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB