Analysis

  • max time kernel
    150s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    03-06-2021 09:12

General

  • Target

    PL.exportcagrifance.exe

  • Size

    204KB

  • MD5

    e7b0bbe1482189169186f932f66fdfd4

  • SHA1

    7011360f134f5c68c5601885abfc7d894728b57d

  • SHA256

    4934774c7509bb829881702ef12f2fe40b9537e1a266de55f4b61248553dc248

  • SHA512

    af0a2d106e5c28234a8c8ab21bbe460cf2cbb1b1f645b6f38cf8f3548e5120b595536107dc8d5c988efac0581610a6aaef561047c704f82f76d9396ec4b789b4

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 2 IoCs
  • A310logger Executable 5 IoCs
  • Executes dropped EXE 1 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.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PL.exportcagrifance.exe
    "C:\Users\Admin\AppData\Local\Temp\PL.exportcagrifance.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:1804
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:556

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • 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

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

    MD5

    1bad0cbd09b05a21157d8255dc801778

    SHA1

    ff284bba12f011b72e20d4c9537d6c455cdbf228

    SHA256

    218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9

    SHA512

    4fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533

  • memory/556-68-0x0000000000000000-mapping.dmp

  • memory/556-71-0x0000000000A90000-0x0000000000A92000-memory.dmp

    Filesize

    8KB

  • memory/752-61-0x0000000076661000-0x0000000076663000-memory.dmp

    Filesize

    8KB

  • memory/752-65-0x00000000033C0000-0x000000000400A000-memory.dmp

    Filesize

    12.3MB

  • memory/1804-62-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/1804-63-0x0000000000412452-mapping.dmp

  • memory/1804-66-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

    Filesize

    4KB