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Analysis

  • max time kernel
    142s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/07/2023, 12:45

General

  • Target

    Cotizacion ##5033900.exe

  • Size

    623KB

  • MD5

    e5e34926801d009fd9345c1221cf61d1

  • SHA1

    00dc97afe9b99f0f4c9c6be374ac0a82958028fd

  • SHA256

    fd36434871eb55ee3d9f78ee0fd63f26c915f8d5a7d3848ef6ffddcac75893cc

  • SHA512

    b7c2d2e7194d2a798abdf6e93f6fd1ded8f01261c35cd474c01684f7a10a791dcbd09625b094c2a8ac2f8b458754f1a8e2e52954de07a187425483b88755df91

  • SSDEEP

    12288:2Wc/bUYIsYolnr8+HrF2pJSlghtqle1De7wubknDIlLS6YfiYh:diXrYoxHrF2pLql2IwubDsa

Malware Config

Extracted

Family

snakekeylogger

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.mtbooks.com.mx
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ^QGUcHQjx3

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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 behavior: RenamesItself 1 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\Cotizacion ##5033900.exe
    "C:\Users\Admin\AppData\Local\Temp\Cotizacion ##5033900.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1608
    • C:\Users\Admin\AppData\Local\Temp\Cotizacion ##5033900.exe
      "C:\Users\Admin\AppData\Local\Temp\Cotizacion ##5033900.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Cotizacion ##5033900.exe.log

    Filesize

    1KB

    MD5

    ef17d50720dd489ca8af0a57c493285b

    SHA1

    455fa3fb2b27069068e132dea6ad680bcbab31ef

    SHA256

    440cb4751f4cf17bee0e0d1e613ee931ea620307cfbb10e37fc6d8ec268b49b0

    SHA512

    53833efc1f8e298aadc0ea68edbdd8fa72f0767f695b99dbdde8615665eee279e115f2ab54f7e6a2e591be1efa0d108792e68677dddde300337e09994bb1c07a

  • memory/1608-141-0x0000000074940000-0x00000000750F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1608-134-0x0000000074940000-0x00000000750F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1608-136-0x00000000055F0000-0x0000000005682000-memory.dmp

    Filesize

    584KB

  • memory/1608-137-0x0000000005750000-0x0000000005760000-memory.dmp

    Filesize

    64KB

  • memory/1608-138-0x00000000056F0000-0x00000000056FA000-memory.dmp

    Filesize

    40KB

  • memory/1608-139-0x00000000071B0000-0x00000000071D2000-memory.dmp

    Filesize

    136KB

  • memory/1608-135-0x0000000005AC0000-0x0000000006064000-memory.dmp

    Filesize

    5.6MB

  • memory/1608-142-0x0000000005750000-0x0000000005760000-memory.dmp

    Filesize

    64KB

  • memory/1608-140-0x0000000007280000-0x000000000731C000-memory.dmp

    Filesize

    624KB

  • memory/1608-147-0x0000000074940000-0x00000000750F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1608-133-0x0000000000BA0000-0x0000000000C42000-memory.dmp

    Filesize

    648KB

  • memory/4148-143-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4148-146-0x0000000074940000-0x00000000750F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4148-148-0x0000000006A70000-0x0000000006C32000-memory.dmp

    Filesize

    1.8MB

  • memory/4148-149-0x0000000074940000-0x00000000750F0000-memory.dmp

    Filesize

    7.7MB