Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-09-2023 11:28

General

  • Target

    Hesap_Hareketleri__20230929_194202031.exe

  • Size

    595KB

  • MD5

    816c7761599a4e2b666d2e47e380c615

  • SHA1

    6e1de32829fce91c28e24f42972575ba4803318c

  • SHA256

    10979714162c9b426a7e9b2e14a582b03b4153bdf3cbce775b69b505a2463cd0

  • SHA512

    e242b3b046c32feeedfcf493683daef8c6647447e7cb35b1f96f87f87f96ff752890764bb1cfeed13c72906da075ca0dc009600191510927df648faec4d063f5

  • SSDEEP

    12288:bJFl3t6SU4VbiQQoiu6dqHnqczOYhT9/yLhUQ8vFheac4FdKwJ4mAp:Dl9aMb6okqHuQaL89VcSgwKp

Malware Config

Extracted

Family

snakekeylogger

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gkas.com.tr
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Gkasteknik@2022

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 2 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 3 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 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.

  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 1 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Hesap_Hareketleri__20230929_194202031.exe
    "C:\Users\Admin\AppData\Local\Temp\Hesap_Hareketleri__20230929_194202031.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4528
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4620
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:1624
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6AB0.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2640
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3216
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • UAC bypass
        • Windows security bypass
        • Looks for VirtualBox Guest Additions in registry
        • Looks for VMWare Tools registry key
        • Checks BIOS information in registry
        • Checks computer location settings
        • Executes dropped EXE
        • Windows security modification
        • Checks whether UAC is enabled
        • Maps connected drives based on registry
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:1436
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svchost.exe" -Force
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4900
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\SMSvcHost.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\SMSvcHost.exe"
          4⤵
            PID:2292
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regsql.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regsql.exe"
            4⤵
            • Accesses Microsoft Outlook profiles
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • outlook_office_path
            • outlook_win_path
            PID:4232

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1c0h1gtl.1gp.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp6AB0.tmp.bat

      Filesize

      151B

      MD5

      30a1bf8275b67458757f0b77c8949155

      SHA1

      5f0fa6192e908f37667d432f36658fe9d3cf4651

      SHA256

      12a71c4708b6d1741171a2d7fe0db852e5ee7ec2fdf7df0b5375aa1049dc5b73

      SHA512

      e634c34ae5f42c2e574984e468d47f2d410dcf1ec86e526da0adbea94357aa835211a1e19663025501bbb08ae731363dfb90509fee580e6dc0eeaca12cb6c807

    • C:\Users\Admin\AppData\Roaming\svchost.exe

      Filesize

      595KB

      MD5

      816c7761599a4e2b666d2e47e380c615

      SHA1

      6e1de32829fce91c28e24f42972575ba4803318c

      SHA256

      10979714162c9b426a7e9b2e14a582b03b4153bdf3cbce775b69b505a2463cd0

      SHA512

      e242b3b046c32feeedfcf493683daef8c6647447e7cb35b1f96f87f87f96ff752890764bb1cfeed13c72906da075ca0dc009600191510927df648faec4d063f5

    • C:\Users\Admin\AppData\Roaming\svchost.exe

      Filesize

      595KB

      MD5

      816c7761599a4e2b666d2e47e380c615

      SHA1

      6e1de32829fce91c28e24f42972575ba4803318c

      SHA256

      10979714162c9b426a7e9b2e14a582b03b4153bdf3cbce775b69b505a2463cd0

      SHA512

      e242b3b046c32feeedfcf493683daef8c6647447e7cb35b1f96f87f87f96ff752890764bb1cfeed13c72906da075ca0dc009600191510927df648faec4d063f5

    • memory/1436-19-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/1436-25-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4232-20-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4232-76-0x00000000052A0000-0x00000000052B0000-memory.dmp

      Filesize

      64KB

    • memory/4232-29-0x00000000052A0000-0x00000000052B0000-memory.dmp

      Filesize

      64KB

    • memory/4232-64-0x00000000060B0000-0x0000000006100000-memory.dmp

      Filesize

      320KB

    • memory/4232-26-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4232-65-0x00000000062D0000-0x0000000006492000-memory.dmp

      Filesize

      1.8MB

    • memory/4232-75-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4528-1-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4528-9-0x0000000005AD0000-0x0000000005B36000-memory.dmp

      Filesize

      408KB

    • memory/4528-14-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4528-8-0x0000000005A40000-0x0000000005A5A000-memory.dmp

      Filesize

      104KB

    • memory/4528-7-0x0000000005890000-0x000000000591C000-memory.dmp

      Filesize

      560KB

    • memory/4528-6-0x0000000005630000-0x000000000563A000-memory.dmp

      Filesize

      40KB

    • memory/4528-5-0x0000000005810000-0x0000000005820000-memory.dmp

      Filesize

      64KB

    • memory/4528-4-0x0000000005670000-0x0000000005702000-memory.dmp

      Filesize

      584KB

    • memory/4528-3-0x0000000005B80000-0x0000000006124000-memory.dmp

      Filesize

      5.6MB

    • memory/4528-2-0x0000000005530000-0x00000000055CC000-memory.dmp

      Filesize

      624KB

    • memory/4528-0-0x0000000000AE0000-0x0000000000B7A000-memory.dmp

      Filesize

      616KB

    • memory/4900-40-0x00000000056E0000-0x0000000005746000-memory.dmp

      Filesize

      408KB

    • memory/4900-60-0x0000000006F90000-0x0000000006FAA000-memory.dmp

      Filesize

      104KB

    • memory/4900-27-0x0000000002400000-0x0000000002410000-memory.dmp

      Filesize

      64KB

    • memory/4900-41-0x00000000057B0000-0x0000000005B04000-memory.dmp

      Filesize

      3.3MB

    • memory/4900-42-0x0000000005C90000-0x0000000005CAE000-memory.dmp

      Filesize

      120KB

    • memory/4900-43-0x0000000005CC0000-0x0000000005D0C000-memory.dmp

      Filesize

      304KB

    • memory/4900-44-0x0000000002400000-0x0000000002410000-memory.dmp

      Filesize

      64KB

    • memory/4900-45-0x000000007FC90000-0x000000007FCA0000-memory.dmp

      Filesize

      64KB

    • memory/4900-47-0x0000000070870000-0x00000000708BC000-memory.dmp

      Filesize

      304KB

    • memory/4900-46-0x0000000006280000-0x00000000062B2000-memory.dmp

      Filesize

      200KB

    • memory/4900-57-0x0000000006240000-0x000000000625E000-memory.dmp

      Filesize

      120KB

    • memory/4900-58-0x0000000006C70000-0x0000000006D13000-memory.dmp

      Filesize

      652KB

    • memory/4900-59-0x00000000075E0000-0x0000000007C5A000-memory.dmp

      Filesize

      6.5MB

    • memory/4900-35-0x0000000005520000-0x0000000005542000-memory.dmp

      Filesize

      136KB

    • memory/4900-61-0x0000000007000000-0x000000000700A000-memory.dmp

      Filesize

      40KB

    • memory/4900-62-0x0000000007210000-0x00000000072A6000-memory.dmp

      Filesize

      600KB

    • memory/4900-63-0x0000000007190000-0x00000000071A1000-memory.dmp

      Filesize

      68KB

    • memory/4900-28-0x0000000004DA0000-0x00000000053C8000-memory.dmp

      Filesize

      6.2MB

    • memory/4900-24-0x0000000002400000-0x0000000002410000-memory.dmp

      Filesize

      64KB

    • memory/4900-66-0x00000000071C0000-0x00000000071CE000-memory.dmp

      Filesize

      56KB

    • memory/4900-67-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4900-68-0x00000000071D0000-0x00000000071E4000-memory.dmp

      Filesize

      80KB

    • memory/4900-69-0x00000000072D0000-0x00000000072EA000-memory.dmp

      Filesize

      104KB

    • memory/4900-70-0x00000000072B0000-0x00000000072B8000-memory.dmp

      Filesize

      32KB

    • memory/4900-71-0x0000000002400000-0x0000000002410000-memory.dmp

      Filesize

      64KB

    • memory/4900-74-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4900-23-0x0000000074E40000-0x00000000755F0000-memory.dmp

      Filesize

      7.7MB

    • memory/4900-21-0x0000000002370000-0x00000000023A6000-memory.dmp

      Filesize

      216KB