tofsee | a1d5bfbffc5aec432e7e8a2a5be5ffe16f7489c545fcb616df931f2e95591803

Analysis

max time kernel
147s
max time network
123s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 20:16

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General

Target

2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe
Size

13.6MB
MD5

3a520821a3474fa9f0a5f78ae6c2ba71
SHA1

52c182776432498305b5750574a9184a62ad72ec
SHA256

a1d5bfbffc5aec432e7e8a2a5be5ffe16f7489c545fcb616df931f2e95591803
SHA512

2d02478bd1c058ad2b659bcf4eea56082edc8bcb6c76c5a73144950f83850986e799f12a7dffc2668e44c66a33553c3d0084fb228f52d9e0bd86b003721a9e5a
SSDEEP

3072:5LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:8OMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

Signatures

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\fhkolibw = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1720	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fhkolibw\ImagePath = "C:\\Windows\\SysWOW64\\fhkolibw\\gtfcvinx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2716	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	gtfcvinx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2752 set thread context of 2716	2752	gtfcvinx.exe	42

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2944	sc.exe
2456	sc.exe
2936	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

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

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gtfcvinx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2144	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	29
PID 2660 wrote to memory of 2144	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	29
PID 2660 wrote to memory of 2144	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	29
PID 2660 wrote to memory of 2144	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	29
PID 2660 wrote to memory of 2852	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	31
PID 2660 wrote to memory of 2852	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	31
PID 2660 wrote to memory of 2852	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	31
PID 2660 wrote to memory of 2852	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	31
PID 2660 wrote to memory of 2944	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	33
PID 2660 wrote to memory of 2944	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	33
PID 2660 wrote to memory of 2944	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	33
PID 2660 wrote to memory of 2944	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	33
PID 2660 wrote to memory of 2456	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	35
PID 2660 wrote to memory of 2456	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	35
PID 2660 wrote to memory of 2456	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	35
PID 2660 wrote to memory of 2456	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	35
PID 2660 wrote to memory of 2936	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	37
PID 2660 wrote to memory of 2936	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	37
PID 2660 wrote to memory of 2936	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	37
PID 2660 wrote to memory of 2936	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	37
PID 2660 wrote to memory of 1720	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	39
PID 2660 wrote to memory of 1720	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	39
PID 2660 wrote to memory of 1720	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	39
PID 2660 wrote to memory of 1720	2660	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	39
PID 2752 wrote to memory of 2716	2752	gtfcvinx.exe	42
PID 2752 wrote to memory of 2716	2752	gtfcvinx.exe	42
PID 2752 wrote to memory of 2716	2752	gtfcvinx.exe	42
PID 2752 wrote to memory of 2716	2752	gtfcvinx.exe	42
PID 2752 wrote to memory of 2716	2752	gtfcvinx.exe	42
PID 2752 wrote to memory of 2716	2752	gtfcvinx.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fhkolibw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gtfcvinx.exe" C:\Windows\SysWOW64\fhkolibw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fhkolibw binPath= "C:\Windows\SysWOW64\fhkolibw\gtfcvinx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fhkolibw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fhkolibw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2936
- 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:1720

C:\Windows\SysWOW64\fhkolibw\gtfcvinx.exe
C:\Windows\SysWOW64\fhkolibw\gtfcvinx.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\gtfcvinx.exe

Filesize
15.0MB

MD5
380663b7280e57ac63ee459be6531055

SHA1
350ef2702fdbd8706f1228a8b10b347821d00097

SHA256
e689fd015d2d96308cda07bf149e73c53254aa1394e6a16637e5aeab3b6b7f43

SHA512
882dcb1e2b62abfd2c22b3b1711822be79d31b6f60103a4479f8b4ce0b7d9e4a88df15af7b88993d56e3b8aad5bd537817d329ef24e61b11c80007a47843b317

Download Submit
memory/2660-3-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2660-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2660-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2660-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2660-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2716-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2716-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2716-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2716-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2716-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2752-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads