Analysis

  • max time kernel
    136s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-08-2024 11:04

General

  • Target

    c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe

  • Size

    655KB

  • MD5

    c6b8dff8c0e4204c318dc7e349d5f531

  • SHA1

    af9f8e6bacac7bd9c2b59c80d4448f0abc10b3c3

  • SHA256

    d76aafee2e54939467b8375394c17f0f99e1dd8497fe2e9a91ff61c4b2d6c8dc

  • SHA512

    6d81e1b0b22452fab716d4e7baa8d05cec02e7a4a3d4a8460504bd7075b23645c2344576f9b0364eef9cfbce64a53d5c12266d9d7f8ab3a0c9e03fdd39d09d8f

  • SSDEEP

    12288:QNlD5ZS/1WEJOAqRSEM3Sy21LVbK89elrrJ56m:QKIDAEQSy2TbKuKN

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

ajith

C2

23.105.131.178:7812

Mutex

VNM_MUTEX_NdVd2sPSSqFdo7I35g

Attributes
  • encryption_key

    jyerms3KOWmt3C9DBFuq

  • install_name

    Windows Defender Security.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    SubDir

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • VenomRAT

    VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1912
    • C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe"
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      • Checks computer location settings
      • Windows security modification
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3236
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2284
      • C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2520
        • C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3868
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe" /rl HIGHEST /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:264
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2788
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2324
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2404
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\hhklI7vFje5R.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3720
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4168
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 10 localhost
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:1616
        • C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe"
          4⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2980
          • C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe
            "C:\Users\Admin\AppData\Local\Temp\c6b8dff8c0e4204c318dc7e349d5f531_JaffaCakes118.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1660

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Windows Defender Security.exe.log

    Filesize

    507B

    MD5

    8cf94b5356be60247d331660005941ec

    SHA1

    fdedb361f40f22cb6a086c808fc0056d4e421131

    SHA256

    52a5b2d36f2b72cb02c695cf7ef46444dda73d4ea82a73e0894c805fa9987bc0

    SHA512

    b886dfc8bf03f8627f051fb6e2ac40ae2e7713584695a365728eb2e2c87217830029aa35bd129c642fa03dde3f7a7dd5690b16248676be60a6bb5f497fb23651

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vwwjgykn.lyk.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\hhklI7vFje5R.bat

    Filesize

    243B

    MD5

    7416a9118ee71d0599cb669430898bf5

    SHA1

    b832d3f6fdece9f2d44e630632bed5db4a650e9e

    SHA256

    c2787d10d22c2f03ecc010c9ad987dfcd83a657602aa2aea2bda3ac25686a82a

    SHA512

    629f11f5b636dfc6f3d6ab4bcce10591b27cc1b7ac135ae79fec820280d1d37f4cdcbaec28294514537e07eb3dedb21eac9f26b4473e03bf3f1d57b18034cb07

  • C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe

    Filesize

    655KB

    MD5

    c6b8dff8c0e4204c318dc7e349d5f531

    SHA1

    af9f8e6bacac7bd9c2b59c80d4448f0abc10b3c3

    SHA256

    d76aafee2e54939467b8375394c17f0f99e1dd8497fe2e9a91ff61c4b2d6c8dc

    SHA512

    6d81e1b0b22452fab716d4e7baa8d05cec02e7a4a3d4a8460504bd7075b23645c2344576f9b0364eef9cfbce64a53d5c12266d9d7f8ab3a0c9e03fdd39d09d8f

  • memory/1912-7-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

    Filesize

    40KB

  • memory/1912-5-0x0000000005100000-0x000000000519C000-memory.dmp

    Filesize

    624KB

  • memory/1912-4-0x0000000004F30000-0x0000000004FC2000-memory.dmp

    Filesize

    584KB

  • memory/1912-0-0x000000007536E000-0x000000007536F000-memory.dmp

    Filesize

    4KB

  • memory/1912-12-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/1912-3-0x00000000056B0000-0x0000000005C54000-memory.dmp

    Filesize

    5.6MB

  • memory/1912-2-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/1912-1-0x00000000004A0000-0x000000000054A000-memory.dmp

    Filesize

    680KB

  • memory/2520-21-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/2520-29-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/2520-22-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/2788-60-0x0000000006E60000-0x0000000006E7A000-memory.dmp

    Filesize

    104KB

  • memory/2788-64-0x0000000007090000-0x000000000709E000-memory.dmp

    Filesize

    56KB

  • memory/2788-23-0x0000000002230000-0x0000000002266000-memory.dmp

    Filesize

    216KB

  • memory/2788-27-0x0000000004C50000-0x0000000005278000-memory.dmp

    Filesize

    6.2MB

  • memory/2788-67-0x0000000007180000-0x0000000007188000-memory.dmp

    Filesize

    32KB

  • memory/2788-66-0x00000000071A0000-0x00000000071BA000-memory.dmp

    Filesize

    104KB

  • memory/2788-31-0x0000000004AF0000-0x0000000004B56000-memory.dmp

    Filesize

    408KB

  • memory/2788-30-0x0000000004A50000-0x0000000004A72000-memory.dmp

    Filesize

    136KB

  • memory/2788-65-0x00000000070A0000-0x00000000070B4000-memory.dmp

    Filesize

    80KB

  • memory/2788-37-0x00000000052C0000-0x0000000005614000-memory.dmp

    Filesize

    3.3MB

  • memory/2788-43-0x0000000005B60000-0x0000000005BAC000-memory.dmp

    Filesize

    304KB

  • memory/2788-42-0x0000000005B40000-0x0000000005B5E000-memory.dmp

    Filesize

    120KB

  • memory/2788-63-0x0000000007060000-0x0000000007071000-memory.dmp

    Filesize

    68KB

  • memory/2788-47-0x0000000070800000-0x000000007084C000-memory.dmp

    Filesize

    304KB

  • memory/2788-46-0x0000000006100000-0x0000000006132000-memory.dmp

    Filesize

    200KB

  • memory/2788-57-0x00000000060E0000-0x00000000060FE000-memory.dmp

    Filesize

    120KB

  • memory/2788-58-0x0000000006D20000-0x0000000006DC3000-memory.dmp

    Filesize

    652KB

  • memory/2788-59-0x00000000074B0000-0x0000000007B2A000-memory.dmp

    Filesize

    6.5MB

  • memory/2788-62-0x00000000070E0000-0x0000000007176000-memory.dmp

    Filesize

    600KB

  • memory/2788-61-0x0000000006ED0000-0x0000000006EDA000-memory.dmp

    Filesize

    40KB

  • memory/3236-10-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3236-15-0x0000000006690000-0x00000000066CC000-memory.dmp

    Filesize

    240KB

  • memory/3236-11-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3236-13-0x00000000052D0000-0x0000000005336000-memory.dmp

    Filesize

    408KB

  • memory/3236-14-0x0000000006010000-0x0000000006022000-memory.dmp

    Filesize

    72KB

  • memory/3236-70-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3236-71-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3236-76-0x0000000075360000-0x0000000075B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3236-8-0x0000000000400000-0x000000000048C000-memory.dmp

    Filesize

    560KB

  • memory/3868-45-0x0000000006910000-0x000000000691A000-memory.dmp

    Filesize

    40KB