Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09-12-2024 15:10

General

  • Target

    e5e504710b99893aea0e451eacfb7c62839a131303977db144bb8b5c1fca2200.exe

  • Size

    139KB

  • MD5

    2ae457d156c22881f61b52e2c1cad0d2

  • SHA1

    4fcdcda539765d33c716903c319120b880cacb3f

  • SHA256

    e5e504710b99893aea0e451eacfb7c62839a131303977db144bb8b5c1fca2200

  • SHA512

    1eb581073f17dbe3a5f13c6924d8d00b7b7affed5ee3c26c27e2082abaccd8b379f32c5ed4c83bcd642db68ac978357cbe3d9aee641ba31f2eb97f76a407ca2a

  • SSDEEP

    3072:z1LM23IP5rlPTB4Nx13iVXxoFKlRtPnf:dMVlWxpiVhoqRtPf

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

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 6 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e5e504710b99893aea0e451eacfb7c62839a131303977db144bb8b5c1fca2200.exe
    "C:\Users\Admin\AppData\Local\Temp\e5e504710b99893aea0e451eacfb7c62839a131303977db144bb8b5c1fca2200.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2076
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gfnkdxaa\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2816
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\htcqpluz.exe" C:\Windows\SysWOW64\gfnkdxaa\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2672
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create gfnkdxaa binPath= "C:\Windows\SysWOW64\gfnkdxaa\htcqpluz.exe /d\"C:\Users\Admin\AppData\Local\Temp\e5e504710b99893aea0e451eacfb7c62839a131303977db144bb8b5c1fca2200.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2848
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description gfnkdxaa "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3032
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start gfnkdxaa
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2524
    • 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:2588
  • C:\Windows\SysWOW64\gfnkdxaa\htcqpluz.exe
    C:\Windows\SysWOW64\gfnkdxaa\htcqpluz.exe /d"C:\Users\Admin\AppData\Local\Temp\e5e504710b99893aea0e451eacfb7c62839a131303977db144bb8b5c1fca2200.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2572
    • 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:2188

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.9MB

    MD5

    fb8bd602ae0fc510c0fa47658b092a30

    SHA1

    4a1ae8008dd0939b3529984eac485c1ad1084d81

    SHA256

    14eeb2a9ea7761a41f86c236ad73029b7efd3f001e90a2b629774745de7c890a

    SHA512

    e87bb049e3477f6bbb4381b700726bd931666e631d3c9979d1eba3322aa6bfac3c0fe2fdd0d2cf39dfa1e01ff159c6d7974484c4910b36434307983eee31cec3

  • memory/2076-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

    Filesize

    1024KB

  • memory/2076-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2076-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2076-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2076-8-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2076-7-0x0000000000400000-0x0000000000459000-memory.dmp

    Filesize

    356KB

  • memory/2188-44-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-40-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2188-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2188-51-0x00000000056C0000-0x0000000005ACB000-memory.dmp

    Filesize

    4.0MB

  • memory/2188-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2188-24-0x00000000003D0000-0x00000000003D6000-memory.dmp

    Filesize

    24KB

  • memory/2188-50-0x00000000003F0000-0x00000000003F5000-memory.dmp

    Filesize

    20KB

  • memory/2188-47-0x00000000003F0000-0x00000000003F5000-memory.dmp

    Filesize

    20KB

  • memory/2188-46-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-45-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2188-43-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-42-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-41-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2188-39-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-38-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-37-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-36-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-35-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-34-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-33-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-32-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-31-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-30-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-27-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/2188-23-0x0000000001B70000-0x0000000001D7F000-memory.dmp

    Filesize

    2.1MB

  • memory/2188-20-0x0000000001B70000-0x0000000001D7F000-memory.dmp

    Filesize

    2.1MB

  • memory/2188-55-0x0000000000440000-0x0000000000447000-memory.dmp

    Filesize

    28KB

  • memory/2188-54-0x00000000056C0000-0x0000000005ACB000-memory.dmp

    Filesize

    4.0MB

  • memory/2572-17-0x0000000000400000-0x0000000000459000-memory.dmp

    Filesize

    356KB