Analysis

  • max time kernel
    90s
  • max time network
    38s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    13-07-2021 13:06

General

  • Target

    5f70bb21955777e10ca01ead27d16b44.exe

  • Size

    1.0MB

  • MD5

    5f70bb21955777e10ca01ead27d16b44

  • SHA1

    2f7d8adfb506718346d94177103d1d976380a9b4

  • SHA256

    84c1024292142c4d234701e830aedcbd865311693f0d8ac75596deee268c7db5

  • SHA512

    69f55a7902a4241c008c745a8f3bbc261bf0f9698f0b0b93aafb6ab8ce47b4e0eba47879e32404d6c3cdfab14cf55f60d5de4c34050bcb377f7f92a5a1ed16f4

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 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 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 2 IoCs

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

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5f70bb21955777e10ca01ead27d16b44.exe
    "C:\Users\Admin\AppData\Local\Temp\5f70bb21955777e10ca01ead27d16b44.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1472
    • C:\Users\Admin\AppData\Local\Temp\5f70bb21955777e10ca01ead27d16b44.exe
      "C:\Users\Admin\AppData\Local\Temp\5f70bb21955777e10ca01ead27d16b44.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:316
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\PASSWORDSNET4.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\PASSWORDSNET4.exe
        3⤵
        • Executes dropped EXE
        • Checks processor information in registry
        PID:2032
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\CREDITCARDNET4.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\CREDITCARDNET4.exe
        3⤵
        • Executes dropped EXE
        PID:868

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/316-65-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/316-69-0x00000000757C1000-0x00000000757C3000-memory.dmp

    Filesize

    8KB

  • memory/316-76-0x0000000000180000-0x0000000000182000-memory.dmp

    Filesize

    8KB

  • memory/868-81-0x0000000000F80000-0x0000000000F81000-memory.dmp

    Filesize

    4KB

  • memory/1472-59-0x00000000012E0000-0x00000000012E1000-memory.dmp

    Filesize

    4KB

  • memory/1472-64-0x0000000005E50000-0x0000000005EC1000-memory.dmp

    Filesize

    452KB

  • memory/1472-63-0x0000000008100000-0x00000000081B5000-memory.dmp

    Filesize

    724KB

  • memory/1472-62-0x0000000000350000-0x0000000000360000-memory.dmp

    Filesize

    64KB

  • memory/1472-61-0x0000000004B30000-0x0000000004B31000-memory.dmp

    Filesize

    4KB

  • memory/2032-74-0x0000000000CE0000-0x0000000000CE1000-memory.dmp

    Filesize

    4KB