Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2024 15:57

General

  • Target

    ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb.exe

  • Size

    291KB

  • MD5

    43a25bb717d44913af7b0d390c470fd2

  • SHA1

    8f19a4b22fbcf9c7d90d0c7c8696e88e7f28f300

  • SHA256

    ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb

  • SHA512

    f339e96201bfd272ef1399d75cd539bc726b66c599927e3d6abd96c6480bf00e466a7ee1b7d284aae1a604e5adfd3a25f544c29b306f43c2069e2f58a649fe29

  • SSDEEP

    6144:A+SwPImN4/CnKjOL9TpU+8aVuKk9i98J/os:1NNICnKjOJTpUJyk9iW6s

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.

  • 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
  • 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\ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb.exe
    "C:\Users\Admin\AppData\Local\Temp\ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2144
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kgowkqoj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2652
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vpusnqnp.exe" C:\Windows\SysWOW64\kgowkqoj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2736
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create kgowkqoj binPath= "C:\Windows\SysWOW64\kgowkqoj\vpusnqnp.exe /d\"C:\Users\Admin\AppData\Local\Temp\ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2664
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description kgowkqoj "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2832
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start kgowkqoj
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2716
    • 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:2568
  • C:\Windows\SysWOW64\kgowkqoj\vpusnqnp.exe
    C:\Windows\SysWOW64\kgowkqoj\vpusnqnp.exe /d"C:\Users\Admin\AppData\Local\Temp\ae594cd758beff9851a2637e2f26995dccc8fd74d7f1078bc34d5a49da2a14bb.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2740
    • 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:2012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.7MB

    MD5

    ff44e4e35b3ba5088c4d19c0a1ee423f

    SHA1

    d00de444dfd226c0f2b73865d38522537a97e615

    SHA256

    32cb08659a88c669109e3944ce658401aa2a3bfbcec1d8748c1b4fab3505370b

    SHA512

    f7d10723f70a16ad3f98f4693a24a742cc1f831cd74967ba23990679f724044f51834e89e1aeefcc905ef69a604e52387104fb7dc1276c8db0e2fa9647f1f98f

  • memory/2012-41-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-30-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-47-0x00000000001B0000-0x00000000001B5000-memory.dmp

    Filesize

    20KB

  • memory/2012-40-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-39-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2012-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2012-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2012-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2012-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2012-51-0x0000000005470000-0x000000000587B000-memory.dmp

    Filesize

    4.0MB

  • memory/2012-24-0x0000000000190000-0x0000000000196000-memory.dmp

    Filesize

    24KB

  • memory/2012-46-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-45-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-44-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-43-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-42-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-54-0x0000000005470000-0x000000000587B000-memory.dmp

    Filesize

    4.0MB

  • memory/2012-55-0x00000000001C0000-0x00000000001C7000-memory.dmp

    Filesize

    28KB

  • memory/2012-50-0x00000000001B0000-0x00000000001B5000-memory.dmp

    Filesize

    20KB

  • memory/2012-37-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-38-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-36-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-35-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-34-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-33-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-32-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-31-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-20-0x0000000001A00000-0x0000000001C0F000-memory.dmp

    Filesize

    2.1MB

  • memory/2012-27-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2012-23-0x0000000001A00000-0x0000000001C0F000-memory.dmp

    Filesize

    2.1MB

  • memory/2144-4-0x0000000000400000-0x0000000002462000-memory.dmp

    Filesize

    32.4MB

  • memory/2144-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2144-1-0x0000000002520000-0x0000000002620000-memory.dmp

    Filesize

    1024KB

  • memory/2144-9-0x0000000000400000-0x0000000002462000-memory.dmp

    Filesize

    32.4MB

  • memory/2144-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2740-17-0x0000000000400000-0x0000000002462000-memory.dmp

    Filesize

    32.4MB