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Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21/11/2024, 03:33

General

  • Target

    ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe

  • Size

    13.1MB

  • MD5

    bb4ee97079a9375e48c5796cdf6b92a3

  • SHA1

    221dc8709cc35985dbaaf43974ba3d137d1f486a

  • SHA256

    ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e

  • SHA512

    ac910d13a6694e496d6d49a0f20598fdfdea38e09134bf08e156525f2da612e58a454142cf1fe817eb11ca1d05cbf4794db0486e54bb8b1937b08b18e08e960b

  • SSDEEP

    393216:455555555555555555555555555555555555555555555555555555555555555k:4555555555555555555555555555555k

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
  • 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\ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe
    "C:\Users\Admin\AppData\Local\Temp\ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2384
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ibhgzpxv\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3032
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jyzfsdxw.exe" C:\Windows\SysWOW64\ibhgzpxv\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2128
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ibhgzpxv binPath= "C:\Windows\SysWOW64\ibhgzpxv\jyzfsdxw.exe /d\"C:\Users\Admin\AppData\Local\Temp\ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2496
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ibhgzpxv "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2240
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ibhgzpxv
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2696
    • 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:2820
  • C:\Windows\SysWOW64\ibhgzpxv\jyzfsdxw.exe
    C:\Windows\SysWOW64\ibhgzpxv\jyzfsdxw.exe /d"C:\Users\Admin\AppData\Local\Temp\ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2792
    • 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:2772

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.6MB

    MD5

    44df99f2aed4fa238b583f5d702c63e5

    SHA1

    406b531396d185aee57593afde8ae9732a016373

    SHA256

    98dfa57918ce8df475fc63fdd1df2a46ae21f236ec7c71d84015c32444239070

    SHA512

    796e5d38e84cf8cd755d23bd533611a35e7434a34ac4362d9361a331b9649003af6dece08a4ef0401234691b552714028f919350d93020b25214d6d1dc56d6b4

  • memory/2384-11-0x0000000000580000-0x0000000000680000-memory.dmp

    Filesize

    1024KB

  • memory/2384-4-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2384-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2384-9-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2384-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2384-1-0x0000000000580000-0x0000000000680000-memory.dmp

    Filesize

    1024KB

  • memory/2772-12-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2772-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2772-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2772-15-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2772-19-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2792-18-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB