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Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/12/2024, 16:15

General

  • Target

    JaffaCakes118_4ff0ce248a8fd30a195cc7cf0709b02c42364d30ec800f7abdff92a74417d011.exe

  • Size

    213KB

  • MD5

    5c50519f8123fd804b2e8d74337022e6

  • SHA1

    b862cfa9f1b20d1acceb43fc2ef3a788464265c2

  • SHA256

    4ff0ce248a8fd30a195cc7cf0709b02c42364d30ec800f7abdff92a74417d011

  • SHA512

    6e362bb25221c74c955a228a30549bd22212932b81aa4ce26c26edf771227cbee0ffea2c3d9095ed4b801843a36744d7aa0f19c16786d7624d4688f12094f2ac

  • SSDEEP

    3072:H7Zt0dLUdxVjd6XsHD1brlFgYodllBgB839E/ZVStsxkgaBChopZa9uD6Vdyhkb:Vt0edxVd6XUDVxu1r39WfigaTwVf

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

  • Tofsee

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

  • Tofsee family
  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ff0ce248a8fd30a195cc7cf0709b02c42364d30ec800f7abdff92a74417d011.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ff0ce248a8fd30a195cc7cf0709b02c42364d30ec800f7abdff92a74417d011.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2464
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\djtquhxx\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4840
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rajrfxfo.exe" C:\Windows\SysWOW64\djtquhxx\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2384
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create djtquhxx binPath= "C:\Windows\SysWOW64\djtquhxx\rajrfxfo.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ff0ce248a8fd30a195cc7cf0709b02c42364d30ec800f7abdff92a74417d011.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3980
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description djtquhxx "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3256
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start djtquhxx
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:756
    • 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:1688
  • C:\Windows\SysWOW64\djtquhxx\rajrfxfo.exe
    C:\Windows\SysWOW64\djtquhxx\rajrfxfo.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ff0ce248a8fd30a195cc7cf0709b02c42364d30ec800f7abdff92a74417d011.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:516
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3112

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.5MB

    MD5

    232742958283be40de153aa255ec241e

    SHA1

    6edbb58d156c758a7bec9066cc7007f7faf397f0

    SHA256

    355b7dd27f9590d542f247254542af592ca3566cbad774d62329551dd0bf604f

    SHA512

    ad9a4541949291fcd6efb792574f9d9a6eb8b435f85ca5610c1ba91b0c6d417ff4e16babe3530de68570e4077532b9f286ee778f600377a11fd3ce626494bd1b

  • memory/516-10-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/516-11-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/516-14-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/516-12-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/2464-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2464-7-0x0000000000510000-0x000000000051D000-memory.dmp

    Filesize

    52KB

  • memory/2464-6-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/2464-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2464-0-0x0000000000510000-0x000000000051D000-memory.dmp

    Filesize

    52KB

  • memory/2464-8-0x0000000000520000-0x0000000000533000-memory.dmp

    Filesize

    76KB

  • memory/2464-1-0x0000000000520000-0x0000000000533000-memory.dmp

    Filesize

    76KB

  • memory/3112-13-0x0000000001210000-0x0000000001225000-memory.dmp

    Filesize

    84KB

  • memory/3112-16-0x0000000001210000-0x0000000001225000-memory.dmp

    Filesize

    84KB

  • memory/3112-17-0x0000000001210000-0x0000000001225000-memory.dmp

    Filesize

    84KB