Analysis

  • max time kernel
    135s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 23:31

General

  • Target

    787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe

  • Size

    502KB

  • MD5

    7a6d2ae925ccae9dc1dd94afe1ac508a

  • SHA1

    18c9d67b20d8263bfafef5a7d60e571e08586a0b

  • SHA256

    787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c

  • SHA512

    8006d6e28252edd7211977302175fc1a955938fe4858e7bfb03ee7621c7465d70cf71b10e23a1cd9e8267092365cee6ff1de09ec3422433bc6ec3d8b4781784e

  • SSDEEP

    6144:RrLbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnx9bHZ:RrLQtqB5urTIoYWBQk1E+VF9mOx9F

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 8 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 8 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 13 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\787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe
    "C:\Users\Admin\AppData\Local\Temp\787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1364
    • 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:1128
      • 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:1924
      • 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:1980

    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

      8f61e9fc965879545f17a2afd0816d2d

      SHA1

      39000de10c6e786cd50dc47c6fa121d87d0dc5e6

      SHA256

      31ce06a4d7b8096f59ab5d9ce75edea84cbae960801b3db455e1ffe51c77a4eb

      SHA512

      e24811ee9380f3dd551ee9fbf974f8fd45731f12f07e395db886d8bc957f26c958f5590c58de53e2e59de6ba931eca6c860103c5c63321a2fdd223919530e01e

    • 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

      7a6d2ae925ccae9dc1dd94afe1ac508a

      SHA1

      18c9d67b20d8263bfafef5a7d60e571e08586a0b

      SHA256

      787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c

      SHA512

      8006d6e28252edd7211977302175fc1a955938fe4858e7bfb03ee7621c7465d70cf71b10e23a1cd9e8267092365cee6ff1de09ec3422433bc6ec3d8b4781784e

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

      502KB

      MD5

      7a6d2ae925ccae9dc1dd94afe1ac508a

      SHA1

      18c9d67b20d8263bfafef5a7d60e571e08586a0b

      SHA256

      787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c

      SHA512

      8006d6e28252edd7211977302175fc1a955938fe4858e7bfb03ee7621c7465d70cf71b10e23a1cd9e8267092365cee6ff1de09ec3422433bc6ec3d8b4781784e

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

      502KB

      MD5

      7a6d2ae925ccae9dc1dd94afe1ac508a

      SHA1

      18c9d67b20d8263bfafef5a7d60e571e08586a0b

      SHA256

      787f22236258b0a5afdb8106af6e584f09df31e493e8ae0793250e00df62aa8c

      SHA512

      8006d6e28252edd7211977302175fc1a955938fe4858e7bfb03ee7621c7465d70cf71b10e23a1cd9e8267092365cee6ff1de09ec3422433bc6ec3d8b4781784e

    • memory/1128-58-0x0000000000000000-mapping.dmp
    • memory/1128-71-0x0000000000165000-0x0000000000176000-memory.dmp
      Filesize

      68KB

    • memory/1128-63-0x0000000073EF0000-0x000000007449B000-memory.dmp
      Filesize

      5.7MB

    • memory/1128-82-0x0000000000165000-0x0000000000176000-memory.dmp
      Filesize

      68KB

    • memory/1128-70-0x0000000073EF0000-0x000000007449B000-memory.dmp
      Filesize

      5.7MB

    • memory/1364-62-0x0000000073EF0000-0x000000007449B000-memory.dmp
      Filesize

      5.7MB

    • memory/1364-56-0x0000000073EF0000-0x000000007449B000-memory.dmp
      Filesize

      5.7MB

    • memory/1364-55-0x0000000073EF0000-0x000000007449B000-memory.dmp
      Filesize

      5.7MB

    • memory/1364-54-0x0000000075E11000-0x0000000075E13000-memory.dmp
      Filesize

      8KB

    • memory/1924-69-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1924-72-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1924-65-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1924-81-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1924-66-0x0000000000411654-mapping.dmp
    • memory/1980-73-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1980-74-0x0000000000442628-mapping.dmp
    • memory/1980-77-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1980-78-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1980-80-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB