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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21/12/2024, 19:21

General

  • Target

    JaffaCakes118_c88e458154fadd00a3790de94f2d7e786705e683e6aa318dabcd242efcff85ff.exe

  • Size

    153KB

  • MD5

    e66556350a01070b7cdcf02158068c09

  • SHA1

    06f2936fd94679429f0c06e8d68afe35b7657a4d

  • SHA256

    c88e458154fadd00a3790de94f2d7e786705e683e6aa318dabcd242efcff85ff

  • SHA512

    4fc759451f985d12205061bf7722ac4591a4c06465eaeca80a495697cde062010384e073654396d941402f812e3319fd7b67138cab0a3af1965012d8f88f92b6

  • SSDEEP

    3072:oFamdpelo9jsA3JEE5On95MKwYY7M40O:oFldqa/3aEjKVMM3O

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Tofsee family
  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c88e458154fadd00a3790de94f2d7e786705e683e6aa318dabcd242efcff85ff.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c88e458154fadd00a3790de94f2d7e786705e683e6aa318dabcd242efcff85ff.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zsjwamht\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2764
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\krpafaoc.exe" C:\Windows\SysWOW64\zsjwamht\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2808
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create zsjwamht binPath= "C:\Windows\SysWOW64\zsjwamht\krpafaoc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c88e458154fadd00a3790de94f2d7e786705e683e6aa318dabcd242efcff85ff.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2652
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description zsjwamht "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2760
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start zsjwamht
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2568
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2248
  • C:\Windows\SysWOW64\zsjwamht\krpafaoc.exe
    C:\Windows\SysWOW64\zsjwamht\krpafaoc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c88e458154fadd00a3790de94f2d7e786705e683e6aa318dabcd242efcff85ff.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2628
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1296

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\krpafaoc.exe

    Filesize

    13.5MB

    MD5

    4b9ebd202c63946b5297f82703ceaee5

    SHA1

    48737b58cc695ba021026642072c5bc6b2821562

    SHA256

    2b26afb053e86d28d759535ed08702b29970d6cb94a6f04ae6e688c2223bf9a8

    SHA512

    8ee2a1a9a5a625a91c75f3859ca4065051236596a49b6443c128064c0a2b8f630b1841eae4fc89c4a7290ad5a13ea93a037c675fcd1d320cbc2bbfd3613c574b

  • memory/1296-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1296-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/1296-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/1296-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/1296-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2628-17-0x0000000000400000-0x00000000004AD000-memory.dmp

    Filesize

    692KB

  • memory/2756-1-0x0000000000520000-0x0000000000620000-memory.dmp

    Filesize

    1024KB

  • memory/2756-3-0x0000000000400000-0x00000000004AD000-memory.dmp

    Filesize

    692KB

  • memory/2756-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2756-9-0x0000000000400000-0x00000000004AD000-memory.dmp

    Filesize

    692KB

  • memory/2756-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB