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Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2022, 08:30

General

  • Target

     41570002689_20221001_05352297_HesapOzeti.exe

  • Size

    1.1MB

  • MD5

    6a58925feb3fe5477f8c44595d2c36cd

  • SHA1

    1b9565b62bee0d29a4f21eb617a88e9682e09862

  • SHA256

    19b0d58c3611ccc99f681997248a835ac4a49572a50278f4f7c732237183db6a

  • SHA512

    fd83cb7cc2e9234f46f7b355a9ff66d26354adf1ba520d51ea3c95cf88ad6e618927d5c04ffa4248d887ad534d24b56a1485eeb6fbb40f603737012ff5898cde

  • SSDEEP

    12288:o/r9+ljmhNLbDYmcIZQWDA9aHZVIAodG21+sq+AJkZnfYHVKyGr3CQK4HTN2i8E6:EsljMLbDYquFY0o+A2ZwhGraJ

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5412597166:AAGUaWxuTxxhNb-NRhiURcTMzuW9nhGoEs/sendMessage?chat_id=932962718

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • StormKitty

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

  • StormKitty payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • 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 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe
    "C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1356
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZFkIYZK.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3964
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZFkIYZK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp83D1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:5048
    • C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe
      "C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1868
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        3⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4588

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp83D1.tmp

    Filesize

    1KB

    MD5

    f579e7202a8774e0ebba46ae07597241

    SHA1

    715bb320bf82ef3aebc1e77f7c47369504e6f391

    SHA256

    c5f245f3e039e8fa683226d1d1037c97d05c0b500441a1eeefb59b331d99e980

    SHA512

    656678cce49d28231df81914835244c5910e076f60c5342bf79b84fb0205de6e2712a70b2454b78f988e78fa085941cff2ed6cbe689cd8589ff1c0c5f634ca00

  • memory/1356-133-0x00000000076D0000-0x0000000007C74000-memory.dmp

    Filesize

    5.6MB

  • memory/1356-134-0x00000000071C0000-0x0000000007252000-memory.dmp

    Filesize

    584KB

  • memory/1356-135-0x0000000007170000-0x000000000717A000-memory.dmp

    Filesize

    40KB

  • memory/1356-136-0x000000000A490000-0x000000000A52C000-memory.dmp

    Filesize

    624KB

  • memory/1356-137-0x00000000008E0000-0x0000000000946000-memory.dmp

    Filesize

    408KB

  • memory/1356-132-0x00000000001F0000-0x0000000000308000-memory.dmp

    Filesize

    1.1MB

  • memory/1868-144-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

  • memory/1868-155-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

  • memory/1868-149-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

  • memory/1868-146-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

  • memory/3964-156-0x0000000006B50000-0x0000000006B82000-memory.dmp

    Filesize

    200KB

  • memory/3964-160-0x0000000007890000-0x00000000078AA000-memory.dmp

    Filesize

    104KB

  • memory/3964-140-0x0000000002C60000-0x0000000002C96000-memory.dmp

    Filesize

    216KB

  • memory/3964-150-0x00000000054E0000-0x0000000005502000-memory.dmp

    Filesize

    136KB

  • memory/3964-151-0x0000000005580000-0x00000000055E6000-memory.dmp

    Filesize

    408KB

  • memory/3964-165-0x0000000007BB0000-0x0000000007BB8000-memory.dmp

    Filesize

    32KB

  • memory/3964-164-0x0000000007BD0000-0x0000000007BEA000-memory.dmp

    Filesize

    104KB

  • memory/3964-154-0x0000000006580000-0x000000000659E000-memory.dmp

    Filesize

    120KB

  • memory/3964-163-0x0000000007AC0000-0x0000000007ACE000-memory.dmp

    Filesize

    56KB

  • memory/3964-157-0x00000000707C0000-0x000000007080C000-memory.dmp

    Filesize

    304KB

  • memory/3964-158-0x0000000006B30000-0x0000000006B4E000-memory.dmp

    Filesize

    120KB

  • memory/3964-159-0x0000000007EF0000-0x000000000856A000-memory.dmp

    Filesize

    6.5MB

  • memory/3964-142-0x0000000005740000-0x0000000005D68000-memory.dmp

    Filesize

    6.2MB

  • memory/3964-161-0x0000000007910000-0x000000000791A000-memory.dmp

    Filesize

    40KB

  • memory/3964-162-0x0000000007B00000-0x0000000007B96000-memory.dmp

    Filesize

    600KB

  • memory/4588-153-0x0000000001180000-0x000000000119A000-memory.dmp

    Filesize

    104KB