Analysis

  • max time kernel
    63s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2024 20:18

General

  • Target

    41c3b05debb26645393a5c7253f28e77.exe

  • Size

    594KB

  • MD5

    41c3b05debb26645393a5c7253f28e77

  • SHA1

    e1e8fcfdc15c34f7e1ce974e4278e79879fe86ae

  • SHA256

    584a847c7e779a2951440152072b93e4ecccb1b86148a2e289c2ccb86962ac34

  • SHA512

    c24771dee7d0e7651b2530623332c28b434da98cc3dbadf3af597225d71a9f2c699bd65f9155424ded2e3902ca1a2f63bc234345b10db9f06e724e9d90ec8351

  • SSDEEP

    12288:SfX25LrCxNuYlc+zakllH7RaR00QHtHx6fsZAvantxK13v6pcL4cUikDXR6sVc+i:SfX25LrCxNuYlcSXt0ehkASIN3CTmv+

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 5 IoCs
  • A310logger Executable 6 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41c3b05debb26645393a5c7253f28e77.exe
    "C:\Users\Admin\AppData\Local\Temp\41c3b05debb26645393a5c7253f28e77.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2108
    • C:\Users\Admin\AppData\Local\Temp\41c3b05debb26645393a5c7253f28e77.exe
      "C:\Users\Admin\AppData\Local\Temp\41c3b05debb26645393a5c7253f28e77.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2360
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
          PID:2096
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
          3⤵
            PID:2712
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
            3⤵
              PID:2080
              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
                4⤵
                  PID:1856

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

            Filesize

            344B

            MD5

            02031dac40cf01757ab304d7b3f87735

            SHA1

            9d0714c5a464fab578d6bc068cfc1088e9e426e0

            SHA256

            2a4aebaa5470e8f20b28a1e9a028894fdd0e32c7275ceac79f3671372ce842ff

            SHA512

            3275f656df052c4be33e685a48dc915561eca460dfd9b36ad79a1c5c51ad9e566861549a964a02c21b33b8bf4ef80140ff20132f8f6e1ffb134c132453dbf14b

          • C:\Users\Admin\AppData\Local\Temp\Cab9658.tmp

            Filesize

            59KB

            MD5

            52a468d9828839b86863cc84d42b7138

            SHA1

            7a2ecc7bed634dfaaf15f3b9de855fe0c731158a

            SHA256

            e6241a5a49dfcbb8cecfafe7d60461dc4da4433e85ef1308613d7af70f0fdd4d

            SHA512

            f346ce1906f4fcf8b6eb64b8ee60a498b9da901b29fb8820824f4431de9dc7a553474b1aa54602b420d759b3c4319b21bf5219a03c0667be33289f854ea61f04

          • C:\Users\Admin\AppData\Local\Temp\Tar9716.tmp

            Filesize

            55KB

            MD5

            cdd8eb52e9041b27568f467ffbc8bb9f

            SHA1

            897d2c873636e235e2b2a7cd00f9a9ca39858c46

            SHA256

            fac78fb97137e27b7ac5851b6de766515e964bf183034a16ac111ba6aef1acdb

            SHA512

            1f6c4f63058debba539980ffdd4bc5f6db1eef53001d88d065b67ecff77e77a3c173d53ce42eaa7a0c760282973af98f774c89800a6bafbf581f7466539c6d03

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

            Filesize

            20KB

            MD5

            1bad0cbd09b05a21157d8255dc801778

            SHA1

            ff284bba12f011b72e20d4c9537d6c455cdbf228

            SHA256

            218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9

            SHA512

            4fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533

          • memory/1856-104-0x000007FEF56B0000-0x000007FEF604D000-memory.dmp

            Filesize

            9.6MB

          • memory/1856-105-0x000007FEF56B0000-0x000007FEF604D000-memory.dmp

            Filesize

            9.6MB

          • memory/2080-32-0x00000000740F0000-0x000000007469B000-memory.dmp

            Filesize

            5.7MB

          • memory/2080-21-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/2080-29-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/2080-27-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/2080-34-0x00000000740F0000-0x000000007469B000-memory.dmp

            Filesize

            5.7MB

          • memory/2080-33-0x0000000000B70000-0x0000000000BB0000-memory.dmp

            Filesize

            256KB

          • memory/2080-106-0x00000000740F0000-0x000000007469B000-memory.dmp

            Filesize

            5.7MB

          • memory/2080-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2080-23-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/2080-31-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/2080-19-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/2080-17-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/2096-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2108-1-0x0000000000090000-0x0000000000190000-memory.dmp

            Filesize

            1024KB

          • memory/2108-2-0x0000000000080000-0x0000000000082000-memory.dmp

            Filesize

            8KB

          • memory/2360-11-0x0000000000400000-0x0000000000430000-memory.dmp

            Filesize

            192KB

          • memory/2360-5-0x0000000000400000-0x0000000000430000-memory.dmp

            Filesize

            192KB

          • memory/2360-3-0x0000000000400000-0x0000000000430000-memory.dmp

            Filesize

            192KB

          • memory/2712-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB