Analysis

  • max time kernel
    135s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/05/2023, 08:24

General

  • Target

    Comprovativo de Transferência.exe

  • Size

    514KB

  • MD5

    cac8563e5e1813454b699556d41721c9

  • SHA1

    e76013e8e94ac9acc11ea23dbd3ff997fe797197

  • SHA256

    2535b5bde8fbe58fcddfbf7acf196a1290159e707c87929a1ae94bc7970e1c5c

  • SHA512

    76d7f7332dbc5979ab852ae69cdfc42493bf227f825253e6db2c39b73e64199a10c8ac4ef48edef33aae6628f531aee60cde8f49d61eb677e727a273672d6cb5

  • SSDEEP

    6144:8LHy9CiejeHdPvqIAcfHqes4/UfmDHoQHP7cUGZYmwZTln6Algv6+w8WVz5fH4Xj:CoCEpvlqex/Uaw9MZ96nW1tYXrnis

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.libreriamarpe.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    f9mU@96n

Extracted

Family

snakekeylogger

Credentials

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Comprovativo de Transferência.exe
    "C:\Users\Admin\AppData\Local\Temp\Comprovativo de Transferência.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3888
    • C:\Users\Admin\AppData\Local\Temp\Comprovativo de Transferência.exe
      "C:\Users\Admin\AppData\Local\Temp\Comprovativo de Transferência.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4820

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Comprovativo de Transferência.exe.log

          Filesize

          1KB

          MD5

          b57b1ea0e9817bd8c90747e991b77447

          SHA1

          df63d993dd8b356c2aa8bdd5fed4ead467d0ef1f

          SHA256

          af13b787c47fa267cbca28ec758f254d5407c5a418fb86fff25ce5aec8b0f99c

          SHA512

          31e8ed3d1f8a3050b53e2b54ded1cde057ab76da28785347ba45a24535974207b14cb7f54f620f6e3a6e679705d7349005d7c29170d988c09c071c852cde621c

        • memory/3888-133-0x0000000000640000-0x00000000006C6000-memory.dmp

          Filesize

          536KB

        • memory/3888-134-0x00000000056D0000-0x0000000005C74000-memory.dmp

          Filesize

          5.6MB

        • memory/3888-135-0x0000000005070000-0x0000000005102000-memory.dmp

          Filesize

          584KB

        • memory/3888-136-0x00000000053D0000-0x0000000005576000-memory.dmp

          Filesize

          1.6MB

        • memory/3888-137-0x0000000005230000-0x000000000523A000-memory.dmp

          Filesize

          40KB

        • memory/3888-138-0x0000000005210000-0x0000000005220000-memory.dmp

          Filesize

          64KB

        • memory/3888-139-0x0000000005210000-0x0000000005220000-memory.dmp

          Filesize

          64KB

        • memory/3888-140-0x0000000008200000-0x000000000829C000-memory.dmp

          Filesize

          624KB

        • memory/4820-141-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/4820-144-0x0000000005180000-0x0000000005190000-memory.dmp

          Filesize

          64KB

        • memory/4820-145-0x0000000005180000-0x0000000005190000-memory.dmp

          Filesize

          64KB