Analysis

  • max time kernel
    201s
  • max time network
    196s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 13:24

General

  • Target

    ac58566b0816ed10555d42d221bf5c12a70754e33b76adaf38253786ce57fa71.exe

  • Size

    424KB

  • MD5

    aa764c52771914cdfb3f246162ff407c

  • SHA1

    a05a64765f4809ab09d6c38eaa6cfe12e6a10905

  • SHA256

    ac58566b0816ed10555d42d221bf5c12a70754e33b76adaf38253786ce57fa71

  • SHA512

    c3b522ca6530220435fa027d17e905dbf7ad9991e9e65d07ddad0e8cb51f55e479f35d11f2e289beda3d2c24bc7aef8c583a2b13df93598e495a1e734e6e5146

  • SSDEEP

    6144:RtvAvgwGaWEWS7WjpCwhj8cuEMDTr8x3EsznmkVq78+OYxsy2v6qF8rbJVktqB5u:7AvgmWS7WjGcsX8Okdq78r9VFw7JT1J

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 11 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 10 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 15 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac58566b0816ed10555d42d221bf5c12a70754e33b76adaf38253786ce57fa71.exe
    "C:\Users\Admin\AppData\Local\Temp\ac58566b0816ed10555d42d221bf5c12a70754e33b76adaf38253786ce57fa71.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:472
    • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
      "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1468
      • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
        "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:840
        • 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"
          4⤵
          • Accesses Microsoft Outlook accounts
          PID:896
        • 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"
          4⤵
            PID:1696
        • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe
          "C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe" -keyhide -prochide 840 -reg C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe -proc 840 C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\winlogon.exe
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1880

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe

      Filesize

      424KB

      MD5

      aa764c52771914cdfb3f246162ff407c

      SHA1

      a05a64765f4809ab09d6c38eaa6cfe12e6a10905

      SHA256

      ac58566b0816ed10555d42d221bf5c12a70754e33b76adaf38253786ce57fa71

      SHA512

      c3b522ca6530220435fa027d17e905dbf7ad9991e9e65d07ddad0e8cb51f55e479f35d11f2e289beda3d2c24bc7aef8c583a2b13df93598e495a1e734e6e5146

    • C:\Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe

      Filesize

      424KB

      MD5

      aa764c52771914cdfb3f246162ff407c

      SHA1

      a05a64765f4809ab09d6c38eaa6cfe12e6a10905

      SHA256

      ac58566b0816ed10555d42d221bf5c12a70754e33b76adaf38253786ce57fa71

      SHA512

      c3b522ca6530220435fa027d17e905dbf7ad9991e9e65d07ddad0e8cb51f55e479f35d11f2e289beda3d2c24bc7aef8c583a2b13df93598e495a1e734e6e5146

    • \Users\Admin\AppData\Roaming\SubFolder\SubFolder\csrss.exe

      Filesize

      424KB

      MD5

      aa764c52771914cdfb3f246162ff407c

      SHA1

      a05a64765f4809ab09d6c38eaa6cfe12e6a10905

      SHA256

      ac58566b0816ed10555d42d221bf5c12a70754e33b76adaf38253786ce57fa71

      SHA512

      c3b522ca6530220435fa027d17e905dbf7ad9991e9e65d07ddad0e8cb51f55e479f35d11f2e289beda3d2c24bc7aef8c583a2b13df93598e495a1e734e6e5146

    • memory/472-55-0x0000000074610000-0x0000000074BBB000-memory.dmp

      Filesize

      5.7MB

    • memory/472-56-0x0000000000E16000-0x0000000000E27000-memory.dmp

      Filesize

      68KB

    • memory/472-59-0x0000000074610000-0x0000000074BBB000-memory.dmp

      Filesize

      5.7MB

    • memory/472-60-0x0000000000E16000-0x0000000000E27000-memory.dmp

      Filesize

      68KB

    • memory/472-54-0x0000000075611000-0x0000000075613000-memory.dmp

      Filesize

      8KB

    • memory/840-66-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/840-87-0x0000000074610000-0x0000000074BBB000-memory.dmp

      Filesize

      5.7MB

    • memory/840-68-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/840-72-0x000000000047EA4E-mapping.dmp

    • memory/840-70-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/840-74-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/840-76-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/840-78-0x0000000074610000-0x0000000074BBB000-memory.dmp

      Filesize

      5.7MB

    • memory/840-64-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/840-63-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/840-94-0x0000000000D15000-0x0000000000D26000-memory.dmp

      Filesize

      68KB

    • memory/840-104-0x0000000000D15000-0x0000000000D26000-memory.dmp

      Filesize

      68KB

    • memory/896-90-0x0000000000411654-mapping.dmp

    • memory/896-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/896-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/896-93-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/896-89-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1468-84-0x0000000074610000-0x0000000074BBB000-memory.dmp

      Filesize

      5.7MB

    • memory/1468-62-0x0000000000B46000-0x0000000000B57000-memory.dmp

      Filesize

      68KB

    • memory/1468-85-0x0000000000B46000-0x0000000000B57000-memory.dmp

      Filesize

      68KB

    • memory/1468-61-0x0000000074610000-0x0000000074BBB000-memory.dmp

      Filesize

      5.7MB

    • memory/1468-57-0x0000000000000000-mapping.dmp

    • memory/1696-98-0x0000000000442628-mapping.dmp

    • memory/1696-97-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/1696-101-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/1696-103-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/1880-88-0x0000000074610000-0x0000000074BBB000-memory.dmp

      Filesize

      5.7MB

    • memory/1880-80-0x0000000000000000-mapping.dmp

    • memory/1880-86-0x0000000074610000-0x0000000074BBB000-memory.dmp

      Filesize

      5.7MB