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Analysis

  • max time kernel
    147s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24/12/2024, 19:21

General

  • Target

    JaffaCakes118_42c7ced62147af5b8cc31c12cf3ef7d75dddaa518bf3f2beb2c7ab5d9c5dd64f.exe

  • Size

    240KB

  • MD5

    ee14752b4ccb32769404996930ce3230

  • SHA1

    09190329105e182ba82701fa0f7a731e49d4a832

  • SHA256

    42c7ced62147af5b8cc31c12cf3ef7d75dddaa518bf3f2beb2c7ab5d9c5dd64f

  • SHA512

    15e5335cf214351f5ffb058fd8642018af62ed9e71f84ac42dc90d79f78755ac2d12abfc3716777ceaeb80cbc90a679cf32117741aa5e6d83e88a3a17763b264

  • SSDEEP

    3072:NXMJhiithleXQDIQMoCrjXm0a477yPY5tT7/iuiRNOuzUlDCtut:NIsCeADtmrjX+0n/iTRUxj

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_42c7ced62147af5b8cc31c12cf3ef7d75dddaa518bf3f2beb2c7ab5d9c5dd64f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c7ced62147af5b8cc31c12cf3ef7d75dddaa518bf3f2beb2c7ab5d9c5dd64f.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3028
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mazbspyl\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2240
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gwrdxjnf.exe" C:\Windows\SysWOW64\mazbspyl\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2708
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create mazbspyl binPath= "C:\Windows\SysWOW64\mazbspyl\gwrdxjnf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c7ced62147af5b8cc31c12cf3ef7d75dddaa518bf3f2beb2c7ab5d9c5dd64f.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2836
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description mazbspyl "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2900
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start mazbspyl
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2676
    • 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:2872
  • C:\Windows\SysWOW64\mazbspyl\gwrdxjnf.exe
    C:\Windows\SysWOW64\mazbspyl\gwrdxjnf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c7ced62147af5b8cc31c12cf3ef7d75dddaa518bf3f2beb2c7ab5d9c5dd64f.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2596
    • 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:2556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.3MB

    MD5

    e4159619e767b9fdc30d0a175ec9e19b

    SHA1

    c4363b058f05f827caaaa4f12a268e7eeddb2907

    SHA256

    d3b51884117a41e9003185fa9de633bc30902b3ccfc1a5d71fa1ccfac31f631a

    SHA512

    69c5720d0c0f9981621ae007705ca5a3bcf65c9709ca14036327046cc29349f39c5e7d5d3f42cd8bec47c1edf143e81ec157de8a31fc3c76fab94e495dd4b4b1

  • memory/2556-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2556-15-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2556-12-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2556-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2556-19-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2596-18-0x0000000000400000-0x000000000086C000-memory.dmp

    Filesize

    4.4MB

  • memory/3028-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/3028-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/3028-11-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/3028-10-0x0000000000230000-0x0000000000330000-memory.dmp

    Filesize

    1024KB

  • memory/3028-9-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/3028-8-0x0000000000400000-0x000000000086C000-memory.dmp

    Filesize

    4.4MB

  • memory/3028-1-0x0000000000230000-0x0000000000330000-memory.dmp

    Filesize

    1024KB