Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2022 19:04

General

  • Target

    fc87f79da45a9ffcf0a3284798c6d491d009372d5b3782dbdd6fd7f8be01a327.exe

  • Size

    780KB

  • MD5

    43153f4f79278075981dbb98b580d74f

  • SHA1

    2455e4217cb8fbd4ebfaa16330558dc128adda1e

  • SHA256

    fc87f79da45a9ffcf0a3284798c6d491d009372d5b3782dbdd6fd7f8be01a327

  • SHA512

    be2018eaf2a61211d85734faf0927f39486965d4cdce24e72ad81f2d0a9c82ea04c7753d16bd92b65a5ea92b4f0b54f43ab18e24f8c55b8a269d582c025af123

  • SSDEEP

    24576:wR/SQVi7i3JFLMEhQQDhoDl4uInnotriI:ci7qLjGmoDlV2g+I

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.vivaldi.net
  • Port:
    587
  • Username:
    smithdean@vivaldi.net
  • Password:
    25194e1936feD$

Signatures

  • HawkEye

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

  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 6 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 10 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 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fc87f79da45a9ffcf0a3284798c6d491d009372d5b3782dbdd6fd7f8be01a327.exe
    "C:\Users\Admin\AppData\Local\Temp\fc87f79da45a9ffcf0a3284798c6d491d009372d5b3782dbdd6fd7f8be01a327.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4796
    • C:\Users\Admin\AppData\Local\Temp\fc87f79da45a9ffcf0a3284798c6d491d009372d5b3782dbdd6fd7f8be01a327.exe
      "C:\Users\Admin\AppData\Local\Temp\fc87f79da45a9ffcf0a3284798c6d491d009372d5b3782dbdd6fd7f8be01a327.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4744
      • 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:5080
      • 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:2316

    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

    Collection

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fc87f79da45a9ffcf0a3284798c6d491d009372d5b3782dbdd6fd7f8be01a327.exe.log
      Filesize

      706B

      MD5

      2ef5ef69dadb8865b3d5b58c956077b8

      SHA1

      af2d869bac00685c745652bbd8b3fe82829a8998

      SHA256

      363502eb2a4e53ba02d2d85412b901fcf8e06de221736bdffa949799ef3d21e3

      SHA512

      66d4db5dd17d88e1d54ea0df3a7211a503dc4355de701259cefccc9f2e4e3ced9534b700099ffbb089a5a3acb082011c80b61801aa14aff76b379ce8f90d4fd3

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

      3KB

      MD5

      f94dc819ca773f1e3cb27abbc9e7fa27

      SHA1

      9a7700efadc5ea09ab288544ef1e3cd876255086

      SHA256

      a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

      SHA512

      72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

    • memory/2316-147-0x0000000000000000-mapping.dmp
    • memory/2316-153-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/2316-151-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/2316-150-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/2316-148-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/4744-137-0x0000000000400000-0x0000000000488000-memory.dmp
      Filesize

      544KB

    • memory/4744-140-0x0000000005A20000-0x0000000005A76000-memory.dmp
      Filesize

      344KB

    • memory/4744-141-0x0000000008C90000-0x0000000008CF6000-memory.dmp
      Filesize

      408KB

    • memory/4744-139-0x0000000005990000-0x000000000599A000-memory.dmp
      Filesize

      40KB

    • memory/4744-136-0x0000000000000000-mapping.dmp
    • memory/4796-132-0x0000000000270000-0x000000000033A000-memory.dmp
      Filesize

      808KB

    • memory/4796-135-0x0000000004F50000-0x0000000004FEC000-memory.dmp
      Filesize

      624KB

    • memory/4796-134-0x0000000004D50000-0x0000000004DE2000-memory.dmp
      Filesize

      584KB

    • memory/4796-133-0x0000000005300000-0x00000000058A4000-memory.dmp
      Filesize

      5.6MB

    • memory/5080-142-0x0000000000000000-mapping.dmp
    • memory/5080-143-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/5080-145-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/5080-146-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB