Resubmissions

16/10/2024, 02:26

241016-cwyacaxhmd 10

16/10/2024, 02:19

241016-csapwasbjm 10

Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16/10/2024, 02:19

General

  • Target

    4affa384ff6ab351df42fc3a02716670_JaffaCakes118.exe

  • Size

    364KB

  • MD5

    4affa384ff6ab351df42fc3a02716670

  • SHA1

    7bebae1ad50fd27c3df625dc3995256f7d8bb8c2

  • SHA256

    4f1e783f68071d95e0b07e1f8b80ed49d0d94a089ae96016b197f846350cfe66

  • SHA512

    802616cac860ed2facd74387475e45ecd5a9e00fb106db801cd0168659fcecb9bb0ca6afb4cfeeca592d24d20c07add685e9a65c3178c839d37850a324906070

  • SSDEEP

    6144:rHDYm7R++Qhm/FxsB+lIB+0ODLawCi308Ki7B4iTK24D1sr:rHr2mwB+g03S5idVK24Zsr

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\+REcovER+yxkpp+.txt

Ransom Note
{}_~_~+ -$.-_+$|~~_|| =|_$.**+-~| $+|=*.-=| !!! IMPORTANT INFORMATION !!!! All of your files are encrypted with RSA-4096. More information about the RSA algorythm can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) Decrypting of your files is only possible with the private key and decrypt program, which is on our secret server. To receive your private key follow one of the links: 1. http://88fga.ketteaero.com/CBD08E65A3B6D8A 2. http://2bdfb.spinakrosa.at/CBD08E65A3B6D8A 3. http://uj5nj.onanwhit.com/CBD08E65A3B6D8A If all of the addresses are not available, follow these steps: 1. Download and install Tor Browser: https://www.torproject.org/download/download-easy.html 2. After a successful installation, run the browser and wait for initialization. 3. Type in the address bar: k7tlx3ghr3m4n2tu.onion/CBD08E65A3B6D8A 4. Follow the instructions on the site. !!! Your personal identification ID: CBD08E65A3B6D8A !!! )(*=~_$~+$==-$*~=$$ __$-=-+*
URLs

http://88fga.ketteaero.com/CBD08E65A3B6D8A

http://2bdfb.spinakrosa.at/CBD08E65A3B6D8A

http://uj5nj.onanwhit.com/CBD08E65A3B6D8A

http://k7tlx3ghr3m4n2tu.onion/CBD08E65A3B6D8A

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Deletes itself 1 IoCs
  • Drops startup file 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Indicator Removal: File Deletion 1 TTPs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Interacts with shadow copies 3 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies data under HKEY_USERS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs
  • System policy modification 1 TTPs 2 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\4affa384ff6ab351df42fc3a02716670_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\4affa384ff6ab351df42fc3a02716670_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2888
    • C:\Users\Admin\AppData\Local\Temp\4affa384ff6ab351df42fc3a02716670_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\4affa384ff6ab351df42fc3a02716670_JaffaCakes118.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2992
      • C:\Users\Admin\Documents\htbdms.exe
        C:\Users\Admin\Documents\htbdms.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2748
        • C:\Users\Admin\Documents\htbdms.exe
          C:\Users\Admin\Documents\htbdms.exe
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:848
          • C:\Windows\System32\vssadmin.exe
            "C:\Windows\System32\vssadmin.exe" Delete Shadows /All /Quiet
            5⤵
            • Interacts with shadow copies
            PID:1832
          • C:\Windows\SysWOW64\NOTEPAD.EXE
            "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\+REcovER+yxkpp+.txt
            5⤵
            • System Location Discovery: System Language Discovery
            PID:884
          • C:\Windows\System32\vssadmin.exe
            "C:\Windows\System32\vssadmin.exe" Delete Shadows /All /Quiet
            5⤵
            • Interacts with shadow copies
            PID:936
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\DOCUME~1\htbdms.exe >> NUL
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2684
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4AFFA3~1.EXE >> NUL
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:2672
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1208
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2212

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\+REcovER+yxkpp+.png

    Filesize

    37KB

    MD5

    cb15a1ab0f3175caa30946b5dd534578

    SHA1

    dfb3cd72e79b36f32ce2e196cebd754b03f95c88

    SHA256

    1d21fbebf80c0f01fc748581d67feb872c4b3de8304b6f7a1d28ec64df1f8fcd

    SHA512

    8bc1ece33638b5ba56b5a579d3ac7af29ed3bfafcaf8ae3bd6e269c4f93fd03bd425fc1b1ba041d8674072bfe013b6974c5810fc85468c91566c3c76fd71afe0

  • C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\+REcovER+yxkpp+.txt

    Filesize

    1KB

    MD5

    843d484dfca3c6534719a82b184e7be3

    SHA1

    f6001346c20f4e077041e07d345cd37a6b743878

    SHA256

    c4e3275538c4b97c783fa65e2a24aa9539bc9e26cee4c85be366757281ae20fd

    SHA512

    0bb110d5e849c37840502d6ddb48b9c62c7422d1e8e74363108fbf1b400fcd6705046590514834bdecd03c641f9f03b1b03ebb794373f156d839ea2a97dd65a4

  • \Users\Admin\Documents\htbdms.exe

    Filesize

    364KB

    MD5

    4affa384ff6ab351df42fc3a02716670

    SHA1

    7bebae1ad50fd27c3df625dc3995256f7d8bb8c2

    SHA256

    4f1e783f68071d95e0b07e1f8b80ed49d0d94a089ae96016b197f846350cfe66

    SHA512

    802616cac860ed2facd74387475e45ecd5a9e00fb106db801cd0168659fcecb9bb0ca6afb4cfeeca592d24d20c07add685e9a65c3178c839d37850a324906070

  • memory/848-1287-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-3972-0x00000000031D0000-0x00000000031D2000-memory.dmp

    Filesize

    8KB

  • memory/848-3970-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-3954-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-1612-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-53-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-3976-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-58-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-56-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-3984-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-54-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/848-52-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2212-3973-0x0000000000130000-0x0000000000132000-memory.dmp

    Filesize

    8KB

  • memory/2748-30-0x0000000000400000-0x00000000004CB000-memory.dmp

    Filesize

    812KB

  • memory/2888-17-0x0000000000220000-0x0000000000226000-memory.dmp

    Filesize

    24KB

  • memory/2888-0-0x0000000000220000-0x0000000000226000-memory.dmp

    Filesize

    24KB

  • memory/2888-1-0x0000000000220000-0x0000000000226000-memory.dmp

    Filesize

    24KB

  • memory/2992-10-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-6-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-8-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-33-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-12-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-16-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-20-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-19-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2992-2-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB

  • memory/2992-4-0x0000000000400000-0x0000000000475000-memory.dmp

    Filesize

    468KB