Analysis

  • max time kernel
    68s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24/11/2022, 04:28

General

  • Target
    27b4901190ca632259654b1d1372d3fffa7e6181a120ba49b79f007872c1a208.exe
  • Size 1.5MB
  • Sample221124-e3s1bahb79
  • SHA256 27b4901190ca632259654b1d1372d3fffa7e6181a120ba49b79f007872c1a208
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 14 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 14 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 19 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\27b4901190ca632259654b1d1372d3fffa7e6181a120ba49b79f007872c1a208.exe
    "C:\Users\Admin\AppData\Local\Temp\27b4901190ca632259654b1d1372d3fffa7e6181a120ba49b79f007872c1a208.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Users\Admin\AppData\Local\Temp\5359\5359.exe
      "C:\Users\Admin\AppData\Local\Temp\5359\5359.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1368
      • C:\Users\Admin\AppData\Roaming\Windows Update.exe
        "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
        3⤵
        • 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:1000
        • 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:624
        • 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:432

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          5359.exe

          • Path C:\Users\Admin\AppData\Local\Temp\5359\5359.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          5359.exe

          • Path C:\Users\Admin\AppData\Local\Temp\5359\5359.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          SysInfo.txt

          • Path C:\Users\Admin\AppData\Local\Temp\SysInfo.txt
          • Size 47B
          • SHA256 8b33ae37499834632badee9e8c109d39aad2761be6b8072384454c7f3e6568b2
          • MD5 SHA1 SHA512

          holderwb.txt

          • Path C:\Users\Admin\AppData\Local\Temp\holderwb.txt
          • Size 2B
          • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
          • MD5 SHA1 SHA512

          Windows Update.exe

          • Path C:\Users\Admin\AppData\Roaming\Windows Update.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          Windows Update.exe

          • Path C:\Users\Admin\AppData\Roaming\Windows Update.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          5359.exe

          • Path \Users\Admin\AppData\Local\Temp\5359\5359.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          5359.exe

          • Path \Users\Admin\AppData\Local\Temp\5359\5359.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          5359.exe

          • Path \Users\Admin\AppData\Local\Temp\5359\5359.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          5359.exe

          • Path \Users\Admin\AppData\Local\Temp\5359\5359.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          Windows Update.exe

          • Path \Users\Admin\AppData\Roaming\Windows Update.exe
          • Size 502KB
          • SHA256 62b9687cab4f8328405476e7d90afdfe614941e25ed4f6df6c4ce102bd77cb44
          • MD5 SHA1 SHA512 SSDEEP

          memory/432-84-0x0000000000400000-0x0000000000458000-memory.dmp

          memory/432-86-0x0000000000400000-0x0000000000458000-memory.dmp

          memory/432-82-0x0000000000400000-0x0000000000458000-memory.dmp

          memory/432-78-0x0000000000400000-0x0000000000458000-memory.dmp

          memory/624-85-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/624-76-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/624-77-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/624-72-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1000-71-0x0000000073D50000-0x00000000742FB000-memory.dmp

          memory/1000-70-0x0000000073D50000-0x00000000742FB000-memory.dmp

          memory/1000-83-0x00000000004E5000-0x00000000004F6000-memory.dmp

          memory/1000-88-0x00000000004E5000-0x00000000004F6000-memory.dmp

          memory/1368-63-0x0000000073810000-0x0000000073DBB000-memory.dmp

          memory/1964-54-0x0000000074D81000-0x0000000074D83000-memory.dmp