Analysis

  • max time kernel
    151s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    13-07-2021 11:39

General

  • Target

    0900900000000TTU.exe

  • Size

    397KB

  • MD5

    553970a3cc2107922b3c29ececbd11e3

  • SHA1

    75e5109e14865976612cbe77023237a0e6321094

  • SHA256

    6dd6430d675baddc598fa38532e9d4572d5dac63429d599871912b2ad1cc51cc

  • SHA512

    e88a76a266b941d830bbd1fbba698d4b70fec26b71962c77df2ae2457d0ea7f59c905b9413595185c5720436255e7bc0a76711be0b65435d6ed89ddd07e24bdc

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 11 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 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.

  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\0900900000000TTU.exe
    "C:\Users\Admin\AppData\Local\Temp\0900900000000TTU.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4016
    • C:\Users\Admin\AppData\Local\Temp\0900900000000TTU.exe
      "C:\Users\Admin\AppData\Local\Temp\0900900000000TTU.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2656
      • 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:3036
        • 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:1116
      • 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:3488
        • 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:2220
      • 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:1152
        • 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:1948

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1116-125-0x0000000002410000-0x0000000002412000-memory.dmp

    Filesize

    8KB

  • memory/1152-137-0x0000000003100000-0x0000000003101000-memory.dmp

    Filesize

    4KB

  • memory/1948-141-0x0000000002510000-0x0000000002512000-memory.dmp

    Filesize

    8KB

  • memory/2220-134-0x0000000002DC0000-0x0000000002DC2000-memory.dmp

    Filesize

    8KB

  • memory/2656-117-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/3036-121-0x0000000001740000-0x0000000001741000-memory.dmp

    Filesize

    4KB

  • memory/3036-119-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/3488-129-0x0000000000D00000-0x0000000000E4A000-memory.dmp

    Filesize

    1.3MB