Analysis

  • max time kernel
    140s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    28-10-2024 14:15

General

  • Target

    7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe

  • Size

    10.9MB

  • MD5

    7a024b0d37c1167f69a9c9766c9af3a9

  • SHA1

    7ddcff26d726b0cf3151704cf0f9e51158b93279

  • SHA256

    952e4b5bba456e1bb30334d28d421a937a18a5ae6926ee914172f89c65e24acb

  • SHA512

    236063040255aa606c77ae22a5a8b1a75b0953a09ade29096c76bb77cbe5b4fbee36e39fdd7ee9fca9bc71d965bbc2f6bff705aa4e3879c24bf04f7df0b6bfc8

  • SSDEEP

    98304:rYTPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPv:r

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.ru

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\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2744
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cdobcjn\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2892
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\etxbrevv.exe" C:\Windows\SysWOW64\cdobcjn\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2804
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create cdobcjn binPath= "C:\Windows\SysWOW64\cdobcjn\etxbrevv.exe /d\"C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2160
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description cdobcjn "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2848
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start cdobcjn
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3012
    • 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:2816
  • C:\Windows\SysWOW64\cdobcjn\etxbrevv.exe
    C:\Windows\SysWOW64\cdobcjn\etxbrevv.exe /d"C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2820
    • 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:1648

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.5MB

    MD5

    d6d1db29d6685c7254f3d24fcb5d918b

    SHA1

    3d0b536bbebf8b982570a7f020419b52eec8abc3

    SHA256

    5c6262f8a6ce018b6eb32110edc0d2bdc96dfd2be9abbda9d03f10debd44d89c

    SHA512

    6cf3fa8c045b1bf76b6a47f3901898c30390665e7e052d78bf3df4fb8477a1326bd10ba1578cf4d77a56284caf9d593b6bacb298a50c4cf822b5ca09e86e7cf2

  • memory/1648-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1648-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/1648-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/1648-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/1648-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2744-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2744-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

    Filesize

    1024KB

  • memory/2744-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2744-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

    Filesize

    76KB

  • memory/2744-7-0x0000000000400000-0x0000000000C17000-memory.dmp

    Filesize

    8.1MB

  • memory/2744-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

    Filesize

    76KB

  • memory/2820-17-0x0000000000400000-0x0000000000C17000-memory.dmp

    Filesize

    8.1MB