Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-09-2024 17:50

General

  • Target

    264492f5a3848a5b5939368dceb63ed0N.exe

  • Size

    387KB

  • MD5

    264492f5a3848a5b5939368dceb63ed0

  • SHA1

    56f0394d689bd0a160b6be8a6554ffe050ff0353

  • SHA256

    9e63a0b8cee81a6872621af7656f617a6c31bb1dedb7647e45bfc36ad8b4fcac

  • SHA512

    ed8e223616670492216e9e336eff69297fb267c39e5dc87f7827d61a67263101aab0ff0d8ecc1f7ed1981cc3397b901690c020d6bc1a6e1a86ff312a7db78e85

  • SSDEEP

    6144:7B0321qBdyJvSHPSzvU6G4o77ll0rRcQZLGpxBY2dUWnvjV4pzf:76m4BdyUb6/oPjUmAQxB3dJJi

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

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

  • 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
  • Drops file in System32 directory 2 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.

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\264492f5a3848a5b5939368dceb63ed0N.exe
    "C:\Users\Admin\AppData\Local\Temp\264492f5a3848a5b5939368dceb63ed0N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2476
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jnipecoc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1584
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jhwexnie.exe" C:\Windows\SysWOW64\jnipecoc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2396
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create jnipecoc binPath= "C:\Windows\SysWOW64\jnipecoc\jhwexnie.exe /d\"C:\Users\Admin\AppData\Local\Temp\264492f5a3848a5b5939368dceb63ed0N.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2108
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description jnipecoc "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2424
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start jnipecoc
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2704
    • 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:2760
  • C:\Windows\SysWOW64\jnipecoc\jhwexnie.exe
    C:\Windows\SysWOW64\jnipecoc\jhwexnie.exe /d"C:\Users\Admin\AppData\Local\Temp\264492f5a3848a5b5939368dceb63ed0N.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2816
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:2740

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.3MB

    MD5

    6c99f6f0fddc843c6cfbe07d0f5b04e3

    SHA1

    a85a9a61d0ff0091a262879250ea70f813bbaf43

    SHA256

    8fef0bd31b208f9fefb6b0c8db1aea2ebed3ca7c2fb0c5d5875daab2462a016c

    SHA512

    254b9246b45e525287d434227f4f4e6b843d87458a0911b82531b0810e290100aa2b239e06b4811eb8672f71fc7ae8e4ab11373fb740fe2423df500df5df80d9

  • memory/2476-16-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2476-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2476-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2476-1-0x0000000002630000-0x0000000002730000-memory.dmp

    Filesize

    1024KB

  • memory/2476-14-0x0000000000400000-0x000000000247A000-memory.dmp

    Filesize

    32.5MB

  • memory/2476-15-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2740-38-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-43-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-54-0x00000000054F0000-0x00000000058FB000-memory.dmp

    Filesize

    4.0MB

  • memory/2740-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2740-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2740-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2740-20-0x00000000017B0000-0x00000000019BF000-memory.dmp

    Filesize

    2.1MB

  • memory/2740-36-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-51-0x00000000054F0000-0x00000000058FB000-memory.dmp

    Filesize

    4.0MB

  • memory/2740-55-0x0000000000390000-0x0000000000397000-memory.dmp

    Filesize

    28KB

  • memory/2740-50-0x0000000000300000-0x0000000000305000-memory.dmp

    Filesize

    20KB

  • memory/2740-47-0x0000000000300000-0x0000000000305000-memory.dmp

    Filesize

    20KB

  • memory/2740-46-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-45-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-44-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2740-42-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-41-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-40-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-39-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2740-37-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-35-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-34-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-33-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-32-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-31-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-30-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-27-0x00000000002B0000-0x00000000002C0000-memory.dmp

    Filesize

    64KB

  • memory/2740-24-0x0000000000260000-0x0000000000266000-memory.dmp

    Filesize

    24KB

  • memory/2740-23-0x00000000017B0000-0x00000000019BF000-memory.dmp

    Filesize

    2.1MB

  • memory/2816-12-0x0000000000400000-0x000000000247A000-memory.dmp

    Filesize

    32.5MB