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Analysis

  • max time kernel
    78s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/01/2023, 05:32

General

  • Target

    tmp_yefxj3l.exe

  • Size

    649KB

  • MD5

    0348469c2faa81c6581790280e815c42

  • SHA1

    abe0c89fefee86e8b69857d4499dc5d63607a7f1

  • SHA256

    d0d573cf8f2460ca3d4e9074af0a2c13b56c287fb7ace1560b8c8209170de73c

  • SHA512

    2c4143a7cb14f391ae8fffb156c51ff328d503200f033bb70721611ee972d625694dd2a96f4a19537504f8511664f7c5caa791fd42737470a1f6eecd12158bde

  • SSDEEP

    12288:Tj4C5sHSY+/o2Qa1s9W7aB4Qyux3qSMWTvPWWeh3ih9HlAhTCV:AC5sn+/ZIWK1x4mGBYTuC

Malware Config

Extracted

Family

snakekeylogger

Credentials
C2

https://api.telegram.org/bot5839027687:AAGrC4UWgd0JQxMHOf1dCehA-oSrYF_Bez8/sendMessage?chat_id=1094077450

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp_yefxj3l.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp_yefxj3l.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3836
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mcveldGLmqL.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5012
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mcveldGLmqL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3D95.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3832
    • C:\Users\Admin\AppData\Local\Temp\tmp_yefxj3l.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp_yefxj3l.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1308

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp3D95.tmp

    Filesize

    1KB

    MD5

    50ea7aec91ddb88912cfcdff0b12a5dc

    SHA1

    6906970d186d99c002bbb6100ccaf8431f591de2

    SHA256

    db02d37f5a067b7811f4934bd4d76a9e23ed0968eb0d2a8cac7b159640c93489

    SHA512

    e82b4d51315f536819c466390a75c15d8e560ef408613054216a13b5f322fc79bd98eb6defd5339f6e4555f9d641411bf00b015d7934bc84daec070ef28f2c82

  • memory/1308-143-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1308-158-0x0000000006220000-0x00000000063E2000-memory.dmp

    Filesize

    1.8MB

  • memory/3836-133-0x0000000005810000-0x0000000005DB4000-memory.dmp

    Filesize

    5.6MB

  • memory/3836-134-0x0000000005260000-0x00000000052F2000-memory.dmp

    Filesize

    584KB

  • memory/3836-135-0x0000000005400000-0x000000000540A000-memory.dmp

    Filesize

    40KB

  • memory/3836-136-0x00000000079C0000-0x0000000007A5C000-memory.dmp

    Filesize

    624KB

  • memory/3836-132-0x00000000007B0000-0x0000000000858000-memory.dmp

    Filesize

    672KB

  • memory/5012-144-0x00000000057B0000-0x00000000057D2000-memory.dmp

    Filesize

    136KB

  • memory/5012-151-0x0000000007FC0000-0x000000000863A000-memory.dmp

    Filesize

    6.5MB

  • memory/5012-139-0x0000000002D90000-0x0000000002DC6000-memory.dmp

    Filesize

    216KB

  • memory/5012-145-0x0000000005F90000-0x0000000005FF6000-memory.dmp

    Filesize

    408KB

  • memory/5012-146-0x0000000006000000-0x0000000006066000-memory.dmp

    Filesize

    408KB

  • memory/5012-147-0x0000000006680000-0x000000000669E000-memory.dmp

    Filesize

    120KB

  • memory/5012-148-0x0000000007630000-0x0000000007662000-memory.dmp

    Filesize

    200KB

  • memory/5012-149-0x0000000070C80000-0x0000000070CCC000-memory.dmp

    Filesize

    304KB

  • memory/5012-150-0x0000000006C30000-0x0000000006C4E000-memory.dmp

    Filesize

    120KB

  • memory/5012-142-0x00000000058B0000-0x0000000005ED8000-memory.dmp

    Filesize

    6.2MB

  • memory/5012-152-0x0000000007980000-0x000000000799A000-memory.dmp

    Filesize

    104KB

  • memory/5012-153-0x00000000079F0000-0x00000000079FA000-memory.dmp

    Filesize

    40KB

  • memory/5012-154-0x0000000007C00000-0x0000000007C96000-memory.dmp

    Filesize

    600KB

  • memory/5012-155-0x0000000007BB0000-0x0000000007BBE000-memory.dmp

    Filesize

    56KB

  • memory/5012-156-0x0000000007CC0000-0x0000000007CDA000-memory.dmp

    Filesize

    104KB

  • memory/5012-157-0x0000000007CA0000-0x0000000007CA8000-memory.dmp

    Filesize

    32KB