Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    06-09-2024 11:03

General

  • Target

    9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6.exe

  • Size

    213KB

  • MD5

    969450e69a3e85413b63c73abb733bdd

  • SHA1

    b506ca717ff22a749bf6e173a7d02b577564ce27

  • SHA256

    9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6

  • SHA512

    8df1b276ff7f5cb67818ccc47158e3ba06f303e6da9aae1e0526c7537cb80d8a59e73e7aca80bd2cd0471a31a1dde49f7e96f05887ca66f9439b460ea3bda858

  • SSDEEP

    6144:PcDXnqPnz58kFjno63Fe/MMQm0Vdh1GQ:PsXq/z5V1nfFxjVdz

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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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\9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6.exe
    "C:\Users\Admin\AppData\Local\Temp\9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2604
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iconplzw\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2844
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qkpnilik.exe" C:\Windows\SysWOW64\iconplzw\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2348
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create iconplzw binPath= "C:\Windows\SysWOW64\iconplzw\qkpnilik.exe /d\"C:\Users\Admin\AppData\Local\Temp\9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2924
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description iconplzw "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2472
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start iconplzw
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2668
    • 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:2708
  • C:\Windows\SysWOW64\iconplzw\qkpnilik.exe
    C:\Windows\SysWOW64\iconplzw\qkpnilik.exe /d"C:\Users\Admin\AppData\Local\Temp\9e08c4e34c5358916c1f360f4c82efc4d7bd77d587cda899691a49c3dffb1bc6.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2776
    • 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:2884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.5MB

    MD5

    4913994ae86b1c6edc6c2334e9e65382

    SHA1

    94343f0cc8a723534bc7a4e0130009d5321f62ea

    SHA256

    308ca4921ffde50b65eb3c7bf771de3ee380ff9b9810e325117e850759c609ad

    SHA512

    d8050c03d41db2cddb8358a540fed72aed6198c782fbbf5205431329b502a4ef05e4fb2bf1f1d0176f252e20352c2ac4b5849527f547065c55d8a72a86f09526

  • memory/2604-14-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2604-3-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2604-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2604-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

    Filesize

    1024KB

  • memory/2604-15-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2776-12-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2884-38-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-50-0x0000000005580000-0x000000000598B000-memory.dmp

    Filesize

    4.0MB

  • memory/2884-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2884-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2884-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2884-19-0x0000000001A80000-0x0000000001C8F000-memory.dmp

    Filesize

    2.1MB

  • memory/2884-26-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-23-0x0000000000110000-0x0000000000116000-memory.dmp

    Filesize

    24KB

  • memory/2884-22-0x0000000001A80000-0x0000000001C8F000-memory.dmp

    Filesize

    2.1MB

  • memory/2884-36-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-35-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2884-44-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-46-0x0000000000170000-0x0000000000175000-memory.dmp

    Filesize

    20KB

  • memory/2884-49-0x0000000000170000-0x0000000000175000-memory.dmp

    Filesize

    20KB

  • memory/2884-8-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2884-43-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-42-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-54-0x0000000000180000-0x0000000000187000-memory.dmp

    Filesize

    28KB

  • memory/2884-53-0x0000000005580000-0x000000000598B000-memory.dmp

    Filesize

    4.0MB

  • memory/2884-41-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-40-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-39-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-45-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-37-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-34-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-33-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-32-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-31-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-30-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

  • memory/2884-29-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB