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Analysis

  • max time kernel
    146s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/01/2025, 05:29

General

  • Target

    2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe

  • Size

    12.6MB

  • MD5

    e18363c0288a27da1ef9a3160cd13647

  • SHA1

    1f474ef7b436f090c4d150e81d6c8b4864322352

  • SHA256

    d9f1aa065d50a3ce0aaaeacd90d5c48243b29cab3868d902bce958d4bce4c1bf

  • SHA512

    732863405b5bcdc89d03f299dbf6e90a8dbbdc486b583e48a582d33500c1cdf8a29f043c0aef0feeeec37ea1b12c207d4526ea2ff88da64da14d1884345b282b

  • SSDEEP

    49152:nqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:nqtYc3

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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.

  • Program crash 2 IoCs
  • 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\2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ufumeabk\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3328
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rllcnwnp.exe" C:\Windows\SysWOW64\ufumeabk\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3828
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ufumeabk binPath= "C:\Windows\SysWOW64\ufumeabk\rllcnwnp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:892
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ufumeabk "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3676
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ufumeabk
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3684
    • 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:2000
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2848 -s 592
      2⤵
      • Program crash
      PID:4628
  • C:\Windows\SysWOW64\ufumeabk\rllcnwnp.exe
    C:\Windows\SysWOW64\ufumeabk\rllcnwnp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3484
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3320
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3484 -s 528
      2⤵
      • Program crash
      PID:4592
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2848 -ip 2848
    1⤵
      PID:3476
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3484 -ip 3484
      1⤵
        PID:4868

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        11.4MB

        MD5

        479648eb2561691a81eb4c5a850e48a0

        SHA1

        4d3d825f85dcb0901a219add3176a686fdc6a72b

        SHA256

        b147e4cc2fce55d970a4a30890b0818c0b46cc33fd16cb0f33451d2ff50c4baf

        SHA512

        6214f07b23740e4204c3b6e9b20b5e76098a7fd4164d9491965a2427eb3817bec29e3a9642bea673b8128bd4e029d4c84b50bd099530238fab8baab21c5a4dd1

      • memory/2848-1-0x00000000030C0000-0x00000000031C0000-memory.dmp

        Filesize

        1024KB

      • memory/2848-2-0x0000000002EA0000-0x0000000002EB3000-memory.dmp

        Filesize

        76KB

      • memory/2848-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2848-13-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2848-12-0x0000000002EA0000-0x0000000002EB3000-memory.dmp

        Filesize

        76KB

      • memory/2848-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

        Filesize

        41.8MB

      • memory/3320-8-0x0000000000CB0000-0x0000000000CC5000-memory.dmp

        Filesize

        84KB

      • memory/3320-14-0x0000000000CB0000-0x0000000000CC5000-memory.dmp

        Filesize

        84KB

      • memory/3320-15-0x0000000000CB0000-0x0000000000CC5000-memory.dmp

        Filesize

        84KB

      • memory/3484-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

        Filesize

        41.8MB