Analysis

  • max time kernel
    161s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-10-2023 15:15

General

  • Target

    dc5e498d5465b93688dd366c5661cb624456b0982928c3778845b5d640ebf625_JC.exe

  • Size

    466KB

  • MD5

    4d5ce0ea9efcb7e3fdb61c32d1626748

  • SHA1

    5813b82a84f3c3d8f4b5a7af227026fc2c8c7f66

  • SHA256

    dc5e498d5465b93688dd366c5661cb624456b0982928c3778845b5d640ebf625

  • SHA512

    9739f69426a5c58aca0c4349a65417994376fd436c5cd55f2feaf30f8fe15ea80e6271fcd80f0c70f77b1f171324a11d730248429f55b80f842b8a71f2fe7be1

  • SSDEEP

    12288:zMYG3l6sMIBJCx6icVkGYJ/Zi/PBs6lD+S:zjGDFkiPB9lD+S

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
  • Sets service image path in registry 2 TTPs 1 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
  • Modifies data under HKEY_USERS 41 IoCs
  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • System policy modification 1 TTPs 1 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dc5e498d5465b93688dd366c5661cb624456b0982928c3778845b5d640ebf625_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\dc5e498d5465b93688dd366c5661cb624456b0982928c3778845b5d640ebf625_JC.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:3892
    • 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:768
      • 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:3124
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1042.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3252
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4908
      • 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 use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:2168
        • 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:4528
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
          4⤵
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:1768
  • C:\Windows\System32\WaaSMedicAgent.exe
    C:\Windows\System32\WaaSMedicAgent.exe d73c513342c24840721e7aee172ff944 aQ8YlVsMG0C6k0oiGvWTaw.0.1.0.0.0
    1⤵
    • Sets service image path in registry
    • Modifies data under HKEY_USERS
    PID:3020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fckayy4g.rus.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp1042.tmp.bat

    Filesize

    151B

    MD5

    53ac56a35cfd43681fd420cfd615a500

    SHA1

    b6a24b1937e8a6742d9e71f8010851260ce9f108

    SHA256

    f9bc3238ac733e3f9960af1854fe5fc58785c4fb212c993e30251b79a9f51588

    SHA512

    a8582e6a3b18f17b0c6d75d2223d7d1c975993942f4d8d44a77b948f556d5394f62035a429318aecd1f3d01c9f89982123625bdcae8c06da5f56b49721690ba0

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

    Filesize

    466KB

    MD5

    4d5ce0ea9efcb7e3fdb61c32d1626748

    SHA1

    5813b82a84f3c3d8f4b5a7af227026fc2c8c7f66

    SHA256

    dc5e498d5465b93688dd366c5661cb624456b0982928c3778845b5d640ebf625

    SHA512

    9739f69426a5c58aca0c4349a65417994376fd436c5cd55f2feaf30f8fe15ea80e6271fcd80f0c70f77b1f171324a11d730248429f55b80f842b8a71f2fe7be1

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

    Filesize

    466KB

    MD5

    4d5ce0ea9efcb7e3fdb61c32d1626748

    SHA1

    5813b82a84f3c3d8f4b5a7af227026fc2c8c7f66

    SHA256

    dc5e498d5465b93688dd366c5661cb624456b0982928c3778845b5d640ebf625

    SHA512

    9739f69426a5c58aca0c4349a65417994376fd436c5cd55f2feaf30f8fe15ea80e6271fcd80f0c70f77b1f171324a11d730248429f55b80f842b8a71f2fe7be1

  • memory/1768-40-0x00000000060F0000-0x0000000006100000-memory.dmp

    Filesize

    64KB

  • memory/1768-31-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1768-73-0x00000000060F0000-0x0000000006100000-memory.dmp

    Filesize

    64KB

  • memory/1768-70-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1768-67-0x0000000007770000-0x000000000777A000-memory.dmp

    Filesize

    40KB

  • memory/1768-66-0x0000000007A00000-0x0000000007A92000-memory.dmp

    Filesize

    584KB

  • memory/1768-65-0x0000000007830000-0x00000000079F2000-memory.dmp

    Filesize

    1.8MB

  • memory/1768-63-0x0000000007610000-0x0000000007660000-memory.dmp

    Filesize

    320KB

  • memory/1768-38-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2168-39-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/2168-19-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/3892-4-0x0000000005880000-0x0000000005890000-memory.dmp

    Filesize

    64KB

  • memory/3892-8-0x00000000061F0000-0x0000000006794000-memory.dmp

    Filesize

    5.6MB

  • memory/3892-6-0x0000000005BE0000-0x0000000005C18000-memory.dmp

    Filesize

    224KB

  • memory/3892-7-0x0000000005C20000-0x0000000005C3A000-memory.dmp

    Filesize

    104KB

  • memory/3892-9-0x0000000005D00000-0x0000000005D66000-memory.dmp

    Filesize

    408KB

  • memory/3892-15-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/3892-1-0x0000000000E70000-0x0000000000EEA000-memory.dmp

    Filesize

    488KB

  • memory/3892-5-0x0000000005880000-0x0000000005890000-memory.dmp

    Filesize

    64KB

  • memory/3892-3-0x00000000058C0000-0x000000000595C000-memory.dmp

    Filesize

    624KB

  • memory/3892-0-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/3892-2-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4528-62-0x0000000007C80000-0x0000000007C9A000-memory.dmp

    Filesize

    104KB

  • memory/4528-77-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4528-42-0x0000000006A10000-0x0000000006A5C000-memory.dmp

    Filesize

    304KB

  • memory/4528-45-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4528-20-0x0000000074600000-0x0000000074DB0000-memory.dmp

    Filesize

    7.7MB

  • memory/4528-46-0x0000000005550000-0x0000000005560000-memory.dmp

    Filesize

    64KB

  • memory/4528-47-0x0000000007AD0000-0x0000000007B02000-memory.dmp

    Filesize

    200KB

  • memory/4528-48-0x0000000070DA0000-0x0000000070DEC000-memory.dmp

    Filesize

    304KB

  • memory/4528-58-0x0000000007AB0000-0x0000000007ACE000-memory.dmp

    Filesize

    120KB

  • memory/4528-59-0x0000000007B20000-0x0000000007BC3000-memory.dmp

    Filesize

    652KB

  • memory/4528-60-0x0000000005550000-0x0000000005560000-memory.dmp

    Filesize

    64KB

  • memory/4528-61-0x00000000082C0000-0x000000000893A000-memory.dmp

    Filesize

    6.5MB

  • memory/4528-37-0x0000000006400000-0x0000000006754000-memory.dmp

    Filesize

    3.3MB

  • memory/4528-41-0x00000000069E0000-0x00000000069FE000-memory.dmp

    Filesize

    120KB

  • memory/4528-71-0x0000000007EB0000-0x0000000007EBE000-memory.dmp

    Filesize

    56KB

  • memory/4528-43-0x0000000005550000-0x0000000005560000-memory.dmp

    Filesize

    64KB

  • memory/4528-24-0x0000000005B00000-0x0000000005B22000-memory.dmp

    Filesize

    136KB

  • memory/4528-21-0x0000000005550000-0x0000000005560000-memory.dmp

    Filesize

    64KB

  • memory/4528-68-0x0000000007F00000-0x0000000007F96000-memory.dmp

    Filesize

    600KB

  • memory/4528-69-0x00000000056D0000-0x00000000056E1000-memory.dmp

    Filesize

    68KB

  • memory/4528-23-0x0000000005B90000-0x00000000061B8000-memory.dmp

    Filesize

    6.2MB

  • memory/4528-64-0x0000000007CF0000-0x0000000007CFA000-memory.dmp

    Filesize

    40KB

  • memory/4528-72-0x0000000007EC0000-0x0000000007ED4000-memory.dmp

    Filesize

    80KB

  • memory/4528-22-0x0000000003010000-0x0000000003046000-memory.dmp

    Filesize

    216KB

  • memory/4528-74-0x0000000007FC0000-0x0000000007FDA000-memory.dmp

    Filesize

    104KB

  • memory/4528-75-0x0000000007FA0000-0x0000000007FA8000-memory.dmp

    Filesize

    32KB

  • memory/4528-25-0x0000000006320000-0x0000000006386000-memory.dmp

    Filesize

    408KB