Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-01-2024 16:32

General

  • Target

    NNHK09090.exe

  • Size

    266KB

  • MD5

    c361fd420eaaf02d8d00849565dbe772

  • SHA1

    910c910c09e8fd3ecca9c44b0652ba05a295def8

  • SHA256

    4819be19d03a245b83fd593209f3ab072ca7d5491d60fea2d50b848236833088

  • SHA512

    50bf99f6cc71b47e21ac1718712d7aec7de839444e7985584a0fc9556a2ea9ec69e7eefd8ab33a86743dd34167f3401469ac22d698d5db7e418a18bddbe2db78

  • SSDEEP

    6144:GEVDew2jZVWwSAEyS+zc0jnKh7La0FBivyLEgM:G7vkwST+IWCnLqvypM

Malware Config

Signatures

  • A310logger

    A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 2 IoCs
  • A310logger Executable 4 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 9 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NNHK09090.exe
    "C:\Users\Admin\AppData\Local\Temp\NNHK09090.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Users\Admin\AppData\Local\Temp\NNHK09090.exe
      "C:\Users\Admin\AppData\Local\Temp\NNHK09090.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1272
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3240
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1616
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3624
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1844
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:2764
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0\UsageLogs\MZ.exe.log

    Filesize

    128B

    MD5

    3d238ac6dd6710907edf2ad7893a0ed2

    SHA1

    b07aaeeb31bdc6e94097a254be088b092dc1fb68

    SHA256

    02d215d5b6ea166e6c4c4669547cbadecbb427d5baf394fbffc7ef374a967501

    SHA512

    c358aa68303aa99ebc019014b4c1fc2fbfa98733f1ea863bf78ca2b877dc5c610121115432d96504df9e43bdda637b067359b07228b6f129bc5ec9a01ed3ee24

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\InstallUtil.exe.log

    Filesize

    496B

    MD5

    6f996b93c361c74ec395d765aa6ffc06

    SHA1

    a72207288114c907b252cd4df50b644d40a818ae

    SHA256

    c0b85961e52bcd146b854bb019c956e52e8f7d549cefbb5d3617f996e5328944

    SHA512

    60ab9220dfcc6d012d02349ab8258502c98af5e513beefad816faef76c7e2d19dac73365612139c0ad4fcfeccd88924dfe39ca91b44abffdfd40368945357a3b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe

    Filesize

    20KB

    MD5

    1bad0cbd09b05a21157d8255dc801778

    SHA1

    ff284bba12f011b72e20d4c9537d6c455cdbf228

    SHA256

    218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9

    SHA512

    4fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533

  • memory/1272-12-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1272-3-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1272-5-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1616-34-0x00007FFDA81B0000-0x00007FFDA8B51000-memory.dmp

    Filesize

    9.6MB

  • memory/1616-28-0x00007FFDA81B0000-0x00007FFDA8B51000-memory.dmp

    Filesize

    9.6MB

  • memory/1616-30-0x00007FFDA81B0000-0x00007FFDA8B51000-memory.dmp

    Filesize

    9.6MB

  • memory/1616-29-0x0000000001310000-0x0000000001320000-memory.dmp

    Filesize

    64KB

  • memory/1844-56-0x00007FFDA8530000-0x00007FFDA8ED1000-memory.dmp

    Filesize

    9.6MB

  • memory/1844-54-0x00007FFDA8530000-0x00007FFDA8ED1000-memory.dmp

    Filesize

    9.6MB

  • memory/1844-57-0x00007FFDA8530000-0x00007FFDA8ED1000-memory.dmp

    Filesize

    9.6MB

  • memory/1844-55-0x00000000014A0000-0x00000000014B0000-memory.dmp

    Filesize

    64KB

  • memory/2240-1-0x0000000001000000-0x0000000001100000-memory.dmp

    Filesize

    1024KB

  • memory/2240-2-0x00000000012F0000-0x00000000012F2000-memory.dmp

    Filesize

    8KB

  • memory/2764-77-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/2764-62-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/2764-61-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/2764-63-0x0000000001490000-0x00000000014A0000-memory.dmp

    Filesize

    64KB

  • memory/3240-8-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/3240-10-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/3240-36-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/3240-13-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/3240-14-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/3240-11-0x0000000001170000-0x0000000001180000-memory.dmp

    Filesize

    64KB

  • memory/3240-9-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/3240-15-0x0000000001170000-0x0000000001180000-memory.dmp

    Filesize

    64KB

  • memory/3624-39-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/3624-58-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/3624-41-0x0000000074BA0000-0x0000000075151000-memory.dmp

    Filesize

    5.7MB

  • memory/3624-40-0x00000000010E0000-0x00000000010F0000-memory.dmp

    Filesize

    64KB

  • memory/3832-75-0x00007FFDA8270000-0x00007FFDA8C11000-memory.dmp

    Filesize

    9.6MB

  • memory/3832-76-0x00007FFDA8270000-0x00007FFDA8C11000-memory.dmp

    Filesize

    9.6MB