Analysis

  • max time kernel
    135s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2023 06:54

General

  • Target

    Halkbank_Ekstre_20231129_532423_6373443.pdf.exe

  • Size

    577KB

  • MD5

    262b52d9590ed5c1810aea72743a52b9

  • SHA1

    1dd3ccec496afccc5da4d2d9614149d56606f050

  • SHA256

    283a23b5137c06811fc59411e30f85f91c7728528cbdad2afeb93cba0f65b598

  • SHA512

    9456a271a35a491c0eefeea4b996908f2df71818198ae31fa2719b2e77e951948a11bbde612d96639b1aa3ebbc10fe2f048e0f9c4d4d7ad0e3a19ae75b3c5cc2

  • SSDEEP

    12288:5ucopox4F9DmF2+R3NXfyKT/T0ysS07jTImEwScLzA:DeZ4hVJ190vTImEDCzA

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 2 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 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_20231129_532423_6373443.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_532423_6373443.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4212
    • C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_532423_6373443.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20231129_532423_6373443.pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Halkbank_Ekstre_20231129_532423_6373443.pdf.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1040-11-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1040-21-0x00000000057C0000-0x00000000057D0000-memory.dmp

    Filesize

    64KB

  • memory/1040-20-0x0000000075130000-0x00000000758E0000-memory.dmp

    Filesize

    7.7MB

  • memory/1040-19-0x0000000006D90000-0x0000000006F52000-memory.dmp

    Filesize

    1.8MB

  • memory/1040-18-0x0000000006B70000-0x0000000006BC0000-memory.dmp

    Filesize

    320KB

  • memory/1040-16-0x00000000057C0000-0x00000000057D0000-memory.dmp

    Filesize

    64KB

  • memory/1040-15-0x0000000075130000-0x00000000758E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4212-5-0x0000000004F10000-0x0000000004F1A000-memory.dmp

    Filesize

    40KB

  • memory/4212-9-0x000000000BC50000-0x000000000BCB0000-memory.dmp

    Filesize

    384KB

  • memory/4212-10-0x000000000F2E0000-0x000000000F37C000-memory.dmp

    Filesize

    624KB

  • memory/4212-8-0x000000000B9F0000-0x000000000B9FA000-memory.dmp

    Filesize

    40KB

  • memory/4212-7-0x0000000005130000-0x0000000005136000-memory.dmp

    Filesize

    24KB

  • memory/4212-14-0x0000000075130000-0x00000000758E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4212-6-0x0000000005350000-0x0000000005368000-memory.dmp

    Filesize

    96KB

  • memory/4212-0-0x0000000075130000-0x00000000758E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4212-17-0x0000000075130000-0x00000000758E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4212-4-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

    Filesize

    64KB

  • memory/4212-3-0x0000000004E60000-0x0000000004EF2000-memory.dmp

    Filesize

    584KB

  • memory/4212-2-0x0000000005370000-0x0000000005914000-memory.dmp

    Filesize

    5.6MB

  • memory/4212-1-0x0000000000400000-0x0000000000496000-memory.dmp

    Filesize

    600KB