Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    06-12-2021 13:18

General

  • Target

    Halkbank_Ekstre_20211206_073714_893133.pdf.exe

  • Size

    1.3MB

  • MD5

    a79b059ad6fa9f6db6085ab511afbd68

  • SHA1

    ae8e5c2541ff2619a6f97b81c64c27cdb00f68cc

  • SHA256

    7c9ec86bf7e62028b5a8967b2cb83020123d033ca981f6ce0193f2c5f7133b7c

  • SHA512

    48acbdd89b49aa7f5908c78cbdb9a03ed82f1f974c471b09d43cbed6887ca3e783934d0a5e1692eda3e2c8db0842930257cd36bbfe54a36afb74381e05b025c3

Malware Config

Extracted

Family

snakekeylogger

Credentials

  • Protocol:
    smtp
  • Host:
    mail.palladiumss.com
  • Port:
    587
  • Username:
    raman@palladiumss.com
  • Password:
    raman@1210

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 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\Halkbank_Ekstre_20211206_073714_893133.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20211206_073714_893133.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3092
    • C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20211206_073714_893133.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20211206_073714_893133.pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2820

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Halkbank_Ekstre_20211206_073714_893133.pdf.exe.log
    MD5

    275a35c2757ec3117c1da2356fd908be

    SHA1

    5235bc7207c2432a34078551e7199b6da8447f37

    SHA256

    9eaae6c9d244f410fb0f403356d0d0d602831c92d49c5d9ed7216435d6ae5619

    SHA512

    dfadf4c15fae2d8840ac85e747f3288792b7677e00b2313a9021be86151a4fe589b47688ece5570041dc8b77dd3c4273ab9222ef819046a5e8f647679f6063f7

  • memory/2820-129-0x000000000042043E-mapping.dmp
  • memory/2820-136-0x00000000065A0000-0x00000000065A1000-memory.dmp
    Filesize

    4KB

  • memory/2820-135-0x0000000005280000-0x000000000577E000-memory.dmp
    Filesize

    5.0MB

  • memory/2820-128-0x0000000000400000-0x0000000000426000-memory.dmp
    Filesize

    152KB

  • memory/3092-122-0x00000000076D0000-0x0000000007BCE000-memory.dmp
    Filesize

    5.0MB

  • memory/3092-125-0x0000000007B20000-0x0000000007B21000-memory.dmp
    Filesize

    4KB

  • memory/3092-126-0x0000000008370000-0x0000000008371000-memory.dmp
    Filesize

    4KB

  • memory/3092-127-0x0000000008610000-0x000000000871A000-memory.dmp
    Filesize

    1.0MB

  • memory/3092-124-0x0000000007AD0000-0x0000000007AD8000-memory.dmp
    Filesize

    32KB

  • memory/3092-123-0x0000000007790000-0x0000000007791000-memory.dmp
    Filesize

    4KB

  • memory/3092-118-0x0000000000880000-0x0000000000881000-memory.dmp
    Filesize

    4KB

  • memory/3092-121-0x00000000076D0000-0x00000000076D1000-memory.dmp
    Filesize

    4KB

  • memory/3092-120-0x0000000007BD0000-0x0000000007BD1000-memory.dmp
    Filesize

    4KB