Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04-06-2024 10:23

General

  • Target

    Invoice.pdf.scr

  • Size

    701KB

  • MD5

    248a39b26266e2bae82074df4a2d915d

  • SHA1

    2ade017a99ebf691e13d3eb86e814637a11a164b

  • SHA256

    555028b1ee606e6d75d849940ceb77d3205fa196cf414370facdbce575f99d85

  • SHA512

    0914237e12ccf8f0f4df72ae442a62c14fe5ca6895145ee93c25927cff4ca252295195627ba8fea71a3b132850c757b7c89aa7a6c0f6fa9243b8ec0fc42c389d

  • SSDEEP

    12288:d6H0vOjqj2/L3bxkIHJdBIkNvPu39vPMog7v8WL5TiHKaYaF6wPTM1kLBrH9:d6UG+j2PxkIH/BTNHckoKv8+iHKIF6w/

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    coronavirus2020

Signatures

  • HawkEye

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • NirSoft MailPassView 8 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 8 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 11 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice.pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\Invoice.pdf.scr" /S
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gzmKwsNOg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2185.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2052
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
      2⤵
        PID:2188
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
        2⤵
          PID:2520
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
          2⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2796
          • 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"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:2792
          • 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"
            3⤵
              PID:2120

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

          Filesize

          70KB

          MD5

          49aebf8cbd62d92ac215b2923fb1b9f5

          SHA1

          1723be06719828dda65ad804298d0431f6aff976

          SHA256

          b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

          SHA512

          bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

        • C:\Users\Admin\AppData\Local\Temp\Tar8685.tmp

          Filesize

          181KB

          MD5

          4ea6026cf93ec6338144661bf1202cd1

          SHA1

          a1dec9044f750ad887935a01430bf49322fbdcb7

          SHA256

          8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

          SHA512

          6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • C:\Users\Admin\AppData\Local\Temp\tmp2185.tmp

          Filesize

          1KB

          MD5

          40f8ddf00019483150ec8b27e01f04fc

          SHA1

          e978c2d1e016725b2a23828a32c8da06821569aa

          SHA256

          27a8000a77be502cd06a5f5b3f70be9e8166c2e8682909379ab8d4c8c3abafcf

          SHA512

          15562593c56fd16ce419d7dbdd195ffc68e1821013241b2eace3390a0266d58f27f83357534f2e700ae1394168af96ec8ca59a4ad605653b419d19e019b93306

        • memory/2120-30-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/2120-27-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/2120-26-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/2336-0-0x0000000074F01000-0x0000000074F02000-memory.dmp

          Filesize

          4KB

        • memory/2336-3-0x0000000074F00000-0x00000000754AB000-memory.dmp

          Filesize

          5.7MB

        • memory/2336-2-0x0000000074F00000-0x00000000754AB000-memory.dmp

          Filesize

          5.7MB

        • memory/2336-1-0x0000000074F00000-0x00000000754AB000-memory.dmp

          Filesize

          5.7MB

        • memory/2336-20-0x0000000074F00000-0x00000000754AB000-memory.dmp

          Filesize

          5.7MB

        • memory/2792-24-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB

        • memory/2792-25-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB

        • memory/2792-23-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB

        • memory/2796-9-0x0000000000400000-0x0000000000488000-memory.dmp

          Filesize

          544KB

        • memory/2796-10-0x0000000000400000-0x0000000000488000-memory.dmp

          Filesize

          544KB

        • memory/2796-11-0x0000000000400000-0x0000000000488000-memory.dmp

          Filesize

          544KB

        • memory/2796-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2796-15-0x0000000000400000-0x0000000000488000-memory.dmp

          Filesize

          544KB

        • memory/2796-17-0x0000000000400000-0x0000000000488000-memory.dmp

          Filesize

          544KB

        • memory/2796-19-0x0000000000400000-0x0000000000488000-memory.dmp

          Filesize

          544KB

        • memory/2796-12-0x0000000000400000-0x0000000000488000-memory.dmp

          Filesize

          544KB