tofsee | 994e81fb5f54eb9e52df8df253dcdccc72d1392cedf8df90326ab0779df19524

General

Target

2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe
Size

11.0MB
MD5

691538f9228fb8bdff33d93f22b3d9ad
SHA1

9567d6d79cfea0b287f7081c0676f82ddb7971d9
SHA256

994e81fb5f54eb9e52df8df253dcdccc72d1392cedf8df90326ab0779df19524
SHA512

6cecc83c562a06af8b77aa838f1a913c462737bcf4601e4def3c7e3bf1e8dacd5b46a89e3ee9ede7f49fd273b9fadebb8da248360426bd6cbbff555e85571084
SSDEEP

24576:86WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQv:RWdLQkt

Score

10^/10

tofsee defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1168	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\fcpzqsmb\ImagePath = "C:\\Windows\\SysWOW64\\fcpzqsmb\\dqczsfku.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe

Deletes itself 1 IoCs

pid	Process
2760	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4188	dqczsfku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4188 set thread context of 2760	4188	dqczsfku.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
116	sc.exe
4984	sc.exe
936	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
4756	4788	WerFault.exe	82
4820	4188	WerFault.exe	96

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dqczsfku.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4788 wrote to memory of 1828	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	86
PID 4788 wrote to memory of 1828	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	86
PID 4788 wrote to memory of 1828	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	86
PID 4788 wrote to memory of 756	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	88
PID 4788 wrote to memory of 756	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	88
PID 4788 wrote to memory of 756	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	88
PID 4788 wrote to memory of 116	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	90
PID 4788 wrote to memory of 116	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	90
PID 4788 wrote to memory of 116	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	90
PID 4788 wrote to memory of 4984	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	92
PID 4788 wrote to memory of 4984	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	92
PID 4788 wrote to memory of 4984	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	92
PID 4788 wrote to memory of 936	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	94
PID 4788 wrote to memory of 936	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	94
PID 4788 wrote to memory of 936	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	94
PID 4788 wrote to memory of 1168	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	97
PID 4788 wrote to memory of 1168	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	97
PID 4788 wrote to memory of 1168	4788	2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe	97
PID 4188 wrote to memory of 2760	4188	dqczsfku.exe	102
PID 4188 wrote to memory of 2760	4188	dqczsfku.exe	102
PID 4188 wrote to memory of 2760	4188	dqczsfku.exe	102
PID 4188 wrote to memory of 2760	4188	dqczsfku.exe	102
PID 4188 wrote to memory of 2760	4188	dqczsfku.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fcpzqsmb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dqczsfku.exe" C:\Windows\SysWOW64\fcpzqsmb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fcpzqsmb binPath= "C:\Windows\SysWOW64\fcpzqsmb\dqczsfku.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fcpzqsmb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fcpzqsmb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:936
- 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:1168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4788 -s 1224
  2⤵
  - Program crash
  PID:4756

C:\Windows\SysWOW64\fcpzqsmb\dqczsfku.exe
C:\Windows\SysWOW64\fcpzqsmb\dqczsfku.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_691538f9228fb8bdff33d93f22b3d9ad_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4188
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 552
  2⤵
  - Program crash
  PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4788 -ip 4788
1⤵
PID:2728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4188 -ip 4188
1⤵
PID:4408

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
10.2MB

MD5
c06e20edcb67f24d5cb96a166aae33b8

SHA1
0c7bc98fa832625466a7e6aef2137066b0bafbb7

SHA256
2a4ba2b59354fd8bdd11429db1d4af4353768f861e994f127f13bb6361d3af9f

SHA512
eddcb799b2f35eb1ad25846dee832713b9ccc300809078073cbf8fffbbdd978c4738a3ab71ed5107d4162578917f38eb7bb1a3f8719733a1c07c0c3dafd01d96

Download Submit
memory/2760-14-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2760-17-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2760-16-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/4188-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4188-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4188-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4188-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4788-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4788-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4788-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4788-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4788-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4788-1-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads