tofsee | c9ddeb670cecb378ac5539460db36b23b32f8f4c416d55372bf3acf10badfde2

General

Target

2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe
Size

11.2MB
MD5

bb831c7f52de206d92781189a192b098
SHA1

024df9bd47f11c0159fb01fa01f7c92552734462
SHA256

c9ddeb670cecb378ac5539460db36b23b32f8f4c416d55372bf3acf10badfde2
SHA512

1962522edcabfd2c0595de017e131d2a6da3ee9fe238dc70636a614a56388255bede9377fef05447789411df14282d4fe9ffd4d5223dabd3928fa1ebbf2e31a0
SSDEEP

24576:l6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQv:kWdLQk

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
3604	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\zxcyoeeu\ImagePath = "C:\\Windows\\SysWOW64\\zxcyoeeu\\fzzqbkbd.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe

Deletes itself 1 IoCs

pid	Process
2520	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2408	fzzqbkbd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2408 set thread context of 2520	2408	fzzqbkbd.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4368	sc.exe
3500	sc.exe
3228	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3580	2228	WerFault.exe	81
3348	2408	WerFault.exe	92

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	cmd.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	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.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	fzzqbkbd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 4828	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	82
PID 2228 wrote to memory of 4828	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	82
PID 2228 wrote to memory of 4828	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	82
PID 2228 wrote to memory of 1324	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	84
PID 2228 wrote to memory of 1324	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	84
PID 2228 wrote to memory of 1324	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	84
PID 2228 wrote to memory of 4368	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	86
PID 2228 wrote to memory of 4368	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	86
PID 2228 wrote to memory of 4368	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	86
PID 2228 wrote to memory of 3500	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	88
PID 2228 wrote to memory of 3500	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	88
PID 2228 wrote to memory of 3500	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	88
PID 2228 wrote to memory of 3228	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	90
PID 2228 wrote to memory of 3228	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	90
PID 2228 wrote to memory of 3228	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	90
PID 2228 wrote to memory of 3604	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	93
PID 2228 wrote to memory of 3604	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	93
PID 2228 wrote to memory of 3604	2228	2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe	93
PID 2408 wrote to memory of 2520	2408	fzzqbkbd.exe	98
PID 2408 wrote to memory of 2520	2408	fzzqbkbd.exe	98
PID 2408 wrote to memory of 2520	2408	fzzqbkbd.exe	98
PID 2408 wrote to memory of 2520	2408	fzzqbkbd.exe	98
PID 2408 wrote to memory of 2520	2408	fzzqbkbd.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zxcyoeeu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fzzqbkbd.exe" C:\Windows\SysWOW64\zxcyoeeu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zxcyoeeu binPath= "C:\Windows\SysWOW64\zxcyoeeu\fzzqbkbd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zxcyoeeu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zxcyoeeu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3228
- 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:3604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 1036
  2⤵
  - Program crash
  PID:3580

C:\Windows\SysWOW64\zxcyoeeu\fzzqbkbd.exe
C:\Windows\SysWOW64\zxcyoeeu\fzzqbkbd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_bb831c7f52de206d92781189a192b098_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 512
  2⤵
  - Program crash
  PID:3348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 2228 -ip 2228
1⤵
PID:2000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2408 -ip 2408
1⤵
PID:3252

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

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.4MB

MD5
91447b118b06fbd485a1dae6cc19a084

SHA1
160ff8209dfec692657ef114f1d7e8e0f7a34332

SHA256
2db97290051a7380672f5827fbcf0c2af76ce0cd90898308f4e6e20332d4dc37

SHA512
7eaa8ea30d932a606deae43288c223fe2cae33a81285912cc7d6b75b869d0a8ace5d051fbf542623cc8f75f8f24320b1bb5983232f36515d422ab9f9883a595f

Download Submit
memory/2228-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2228-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-2-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/2228-8-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/2228-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-1-0x0000000000450000-0x0000000000550000-memory.dmp

Filesize
1024KB

Download
memory/2408-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2408-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2408-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2408-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2520-14-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/2520-16-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/2520-17-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads