Analysis

  • max time kernel
    88s
  • max time network
    188s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 02:53

General

  • Target

    3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe

  • Size

    502KB

  • MD5

    849e250bf6b07de0fc59385ab77a72e8

  • SHA1

    5fd880f856e032e0f654899475df242c0bb9ab34

  • SHA256

    3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a

  • SHA512

    6e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87

  • SSDEEP

    6144:grLbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnx9bHL:grLQtqB5urTIoYWBQk1E+VF9mOx9n

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 14 IoCs
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe
    "C:\Users\Admin\AppData\Local\Temp\3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1876
    • C:\Users\Admin\AppData\Roaming\Windows Update.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
      2⤵
      • Executes dropped EXE
      • Deletes itself
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:592
      • 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:1556
      • 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:1680

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      102B

      MD5

      6ebb2651a36b906645147fbd608974cc

      SHA1

      b5be3a0edd36c0c9f08ac5e26e10d06faa5aad52

      SHA256

      d5a83d1cebeeb65f85cbb76169fe18a2fe392e343176ad7e1530b8d46323ba1d

      SHA512

      8e6a901b16f83bbb47f1ec9c2d7e6b3b5b9bc430a1898ca0c19d8de7a3cd926df224e64e2789521a489a71bbc16418e3b73ae1c957fc675919dc3618d7ce2ca9

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

      Filesize

      502KB

      MD5

      849e250bf6b07de0fc59385ab77a72e8

      SHA1

      5fd880f856e032e0f654899475df242c0bb9ab34

      SHA256

      3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a

      SHA512

      6e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87

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

      Filesize

      502KB

      MD5

      849e250bf6b07de0fc59385ab77a72e8

      SHA1

      5fd880f856e032e0f654899475df242c0bb9ab34

      SHA256

      3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a

      SHA512

      6e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87

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

      Filesize

      502KB

      MD5

      849e250bf6b07de0fc59385ab77a72e8

      SHA1

      5fd880f856e032e0f654899475df242c0bb9ab34

      SHA256

      3664f5cd6a12e7543518a0b62111664a9ddf70d54d10aed0c697910565984b8a

      SHA512

      6e9efb493871f8cd98b5bf46b02b91278a391040cae0803925e5d07306fcb73ebb4e54cf5149ccca297952284e78e3e3baccce0808be9d34b262b5638a5daf87

    • memory/592-65-0x0000000074220000-0x00000000747CB000-memory.dmp

      Filesize

      5.7MB

    • memory/592-81-0x0000000002145000-0x0000000002156000-memory.dmp

      Filesize

      68KB

    • memory/592-58-0x0000000000000000-mapping.dmp

    • memory/592-71-0x0000000002145000-0x0000000002156000-memory.dmp

      Filesize

      68KB

    • memory/592-63-0x0000000074220000-0x00000000747CB000-memory.dmp

      Filesize

      5.7MB

    • memory/1556-67-0x0000000000411654-mapping.dmp

    • memory/1556-66-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1556-83-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1556-70-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1556-82-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1556-72-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1680-80-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/1680-74-0x0000000000442628-mapping.dmp

    • memory/1680-77-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/1680-78-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/1680-73-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/1876-56-0x0000000074220000-0x00000000747CB000-memory.dmp

      Filesize

      5.7MB

    • memory/1876-55-0x0000000074220000-0x00000000747CB000-memory.dmp

      Filesize

      5.7MB

    • memory/1876-62-0x0000000074220000-0x00000000747CB000-memory.dmp

      Filesize

      5.7MB

    • memory/1876-54-0x00000000752B1000-0x00000000752B3000-memory.dmp

      Filesize

      8KB