Analysis

  • max time kernel
    151s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    05-09-2021 09:54

General

  • Target

    090009000N.exe

  • Size

    208KB

  • MD5

    780cc6d61d19eb61fbb2566fe8f39b4a

  • SHA1

    08272cd98b5d17ba7f6bf204e7b0af78a2e44957

  • SHA256

    7a30162550b7e83cf48b73ad034251cbc6e053f9d20809c4f4beefaef28c8754

  • SHA512

    f9e5d82b4710a8e5020007d9d1ae9eb1e2f8c682677a87617c08bc5059d148cfb2b5673c221077f96d37ae45d324b26ac4632df0f8fb1a05c35e989243f4048e

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 3 IoCs
  • A310logger Executable 7 IoCs
  • Executes dropped EXE 2 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.

  • 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). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\090009000N.exe
    "C:\Users\Admin\AppData\Local\Temp\090009000N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Users\Admin\AppData\Local\Temp\090009000N.exe
      "C:\Users\Admin\AppData\Local\Temp\090009000N.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4048
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3744
        • 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:3168
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:908
        • 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:3860
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
          PID:2452
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2452 -s 88
            4⤵
            • Program crash
            PID:3616

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      MD5

      0d96352b982082afe2903d10c1b819a2

      SHA1

      37067f1193b4a3deaf27f35a09ddba8e2adee680

      SHA256

      825a471d43d2b81bed778b2bd7a3bf1a2b22a81c3b0de3c68bc2aa9c5bebcec2

      SHA512

      e55862d182b1f1bc1b296cb213e2c576f545120678e2be930dbcf764069ecb9eb3737cfa010c0a4861a5a20605bfae42a49b955d80006c52bd1486b7134bc2af

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

      MD5

      a62535934fa7300b21d015be8236a2e5

      SHA1

      d94f020f9f0f299c46c0ce9b141a3b9da0f32814

      SHA256

      3efaf87f4602570f0be76f4bd246425060a2731f83aec474d7f354f8e6f62c70

      SHA512

      69761425416d2de37dc8934232160e2b8912b433cf8cbfc5505bc00d0c227624808c6414297addb91c966ff27045e9c4679af916efb563576c6fa23fdff1c5a5

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

      MD5

      1bad0cbd09b05a21157d8255dc801778

      SHA1

      ff284bba12f011b72e20d4c9537d6c455cdbf228

      SHA256

      218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9

      SHA512

      4fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533

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

      MD5

      1bad0cbd09b05a21157d8255dc801778

      SHA1

      ff284bba12f011b72e20d4c9537d6c455cdbf228

      SHA256

      218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9

      SHA512

      4fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533

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

      MD5

      1bad0cbd09b05a21157d8255dc801778

      SHA1

      ff284bba12f011b72e20d4c9537d6c455cdbf228

      SHA256

      218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9

      SHA512

      4fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533

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

      MD5

      1bad0cbd09b05a21157d8255dc801778

      SHA1

      ff284bba12f011b72e20d4c9537d6c455cdbf228

      SHA256

      218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9

      SHA512

      4fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533

    • memory/752-119-0x0000000003140000-0x0000000003142000-memory.dmp

      Filesize

      8KB

    • memory/908-129-0x0000000000F30000-0x0000000000F31000-memory.dmp

      Filesize

      4KB

    • memory/908-127-0x0000000000412452-mapping.dmp

    • memory/2452-136-0x0000000000412452-mapping.dmp

    • memory/3168-122-0x0000000000000000-mapping.dmp

    • memory/3168-125-0x00000000029A0000-0x00000000029A2000-memory.dmp

      Filesize

      8KB

    • memory/3744-121-0x0000000002F40000-0x0000000002F41000-memory.dmp

      Filesize

      4KB

    • memory/3744-118-0x0000000000412452-mapping.dmp

    • memory/3744-117-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

    • memory/3860-130-0x0000000000000000-mapping.dmp

    • memory/3860-134-0x00000000026F0000-0x00000000026F2000-memory.dmp

      Filesize

      8KB

    • memory/4048-114-0x00000000004024E0-mapping.dmp

    • memory/4048-120-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB