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Overview

overview

10

Static

static

3

TFQFym2NF9.exe

windows7-x64

10

TFQFym2NF9.exe

windows10-2004-x64

10

TFQFym2NF9.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    23/07/2024, 15:17

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General

  • Target

    TFQFym2NF9.exe

  • Size

    301KB

  • MD5

    547d22725d299a21760e957f1522d03b

  • SHA1

    5fc9a7b3d3b118b38d1b76f33eba59ba3f49e33e

  • SHA256

    d99e41c304f50b2548a79f43cfea1de5d96ceb38b254ed8057b59ae190916200

  • SHA512

    ee486698fa1952464d08a9987679b2a28fc1d54cb9635ed92392f896368375f60ed139bc82ee846d35ea1f6ec409989a7aa9bbd1c39912fdbec15f375a0cb4ea

  • SSDEEP

    3072:eMbOOm6/FBMTUrZXzYzRbWW2DA6mMY0bX2pk0Bhi25P3SSklv9ATu:eMDLt5ZXkzRitDcMpbXMk0Dvx3kN9AT

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

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.

    trojantofsee
  • Windows security bypass 2 TTPs 1 IoCs
    evasiontrojan
  • Creates new service(s) 2 TTPs
    persistenceexecution
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • 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.

    persistenceprivilege_escalation
  • 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.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\TFQFym2NF9.exe
    "C:\Users\Admin\AppData\Local\Temp\TFQFym2NF9.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2936
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\czmvawyw\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1696
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwinkqpd.exe" C:\Windows\SysWOW64\czmvawyw\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1272
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create czmvawyw binPath= "C:\Windows\SysWOW64\czmvawyw\kwinkqpd.exe /d\"C:\Users\Admin\AppData\Local\Temp\TFQFym2NF9.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2904
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description czmvawyw "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2092
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start czmvawyw
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2860
    • 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:2736
  • C:\Windows\SysWOW64\czmvawyw\kwinkqpd.exe
    C:\Windows\SysWOW64\czmvawyw\kwinkqpd.exe /d"C:\Users\Admin\AppData\Local\Temp\TFQFym2NF9.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2884
    • 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:2748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

2
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\kwinkqpd.exe
    Filesize

    14.7MB

    MD5

    48f383776275db9bb3f24588573017ab

    SHA1

    cf014bc840c5bb5c0065a02a5f736d4c019fce1b

    SHA256

    f8e4965fe4c83b056533d8035906f106765d4742efd813acd7c800908e5162dd

    SHA512

    5fb0fec01f23f31ab5b1658b994690405a2c1a9a4fc41f3e8299b699c8f80019e0d0251a5ddf3360004bb57bf782f973f8b96218cc25cca0db9f8593d38de712

    Download Submit

  • memory/2748-45-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-34-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-19-0x0000000001950000-0x0000000001B5F000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/2748-23-0x0000000000080000-0x0000000000086000-memory.dmp

    Filesize

    24KB

    Download

  • memory/2748-32-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-42-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2748-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2748-10-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2748-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2748-53-0x0000000005500000-0x000000000590B000-memory.dmp

    Filesize

    4.0MB

    Download

  • memory/2748-26-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-22-0x0000000001950000-0x0000000001B5F000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/2748-50-0x0000000005500000-0x000000000590B000-memory.dmp

    Filesize

    4.0MB

    Download

  • memory/2748-54-0x0000000000200000-0x0000000000207000-memory.dmp

    Filesize

    28KB

    Download

  • memory/2748-49-0x00000000001F0000-0x00000000001F5000-memory.dmp

    Filesize

    20KB

    Download

  • memory/2748-46-0x00000000001F0000-0x00000000001F5000-memory.dmp

    Filesize

    20KB

    Download

  • memory/2748-29-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-30-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-43-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-13-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2748-41-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-40-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-39-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-38-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-37-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-36-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-35-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-44-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-33-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2748-31-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2884-14-0x0000000000400000-0x0000000002464000-memory.dmp

    Filesize

    32.4MB

    Download

  • memory/2936-2-0x0000000002620000-0x0000000002720000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/2936-4-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2936-8-0x0000000000400000-0x0000000002464000-memory.dmp

    Filesize

    32.4MB

    Download

  • memory/2936-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2936-3-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

    Download