Analysis

  • max time kernel
    152s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27-08-2021 10:40

General

  • Target

    NEW980009000.exe

  • Size

    376KB

  • MD5

    01e4b34085e840c3c2cebf1e0db0aa29

  • SHA1

    2c1bcfac805bd6bd400389b902029eb80865f518

  • SHA256

    1082af11e2e9949798b1752d511d0c134ccc7bb54147b5c83a5d0edddd236e65

  • SHA512

    4c5c7c63db636ed64a12ca55fb604772fea80bbab915ff00500b54142146f1db2685d70c818430c17cbbe20a7e66d58363df3a29b67b8b4f3b4bc2535a0742ec

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\NEW980009000.exe
    "C:\Users\Admin\AppData\Local\Temp\NEW980009000.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:912
    • C:\Users\Admin\AppData\Local\Temp\NEW980009000.exe
      "C:\Users\Admin\AppData\Local\Temp\NEW980009000.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:432
      • 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:2836
        • 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:512
      • 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:3972
        • 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:4044
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
          PID:2212
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2212 -s 88
            4⤵
            • Program crash
            PID:3232

    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/432-115-0x00000000004024E0-mapping.dmp

    • memory/432-119-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/512-126-0x0000000000DD0000-0x0000000000DD2000-memory.dmp

      Filesize

      8KB

    • memory/512-123-0x0000000000000000-mapping.dmp

    • memory/912-114-0x0000000003380000-0x0000000003381000-memory.dmp

      Filesize

      4KB

    • memory/912-118-0x0000000005610000-0x0000000005612000-memory.dmp

      Filesize

      8KB

    • memory/2212-137-0x0000000000412452-mapping.dmp

    • memory/2836-122-0x0000000002960000-0x0000000002961000-memory.dmp

      Filesize

      4KB

    • memory/2836-121-0x0000000000412452-mapping.dmp

    • memory/2836-120-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

    • memory/3972-128-0x0000000000412452-mapping.dmp

    • memory/3972-130-0x00000000031B0000-0x00000000031B1000-memory.dmp

      Filesize

      4KB

    • memory/4044-131-0x0000000000000000-mapping.dmp

    • memory/4044-135-0x00000000025E0000-0x00000000025E2000-memory.dmp

      Filesize

      8KB