tofsee | cc818e8fc4d68e1d87fd4ba4e8c6cef784b1d0e0d64c2474b9dc5943287f2c6b

General

Target

2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe
Size

11.5MB
MD5

c15b4cfd4cea02fc55d57af8bf070a36
SHA1

c8a67802d33a2363de332b3cf80942267b66eed6
SHA256

cc818e8fc4d68e1d87fd4ba4e8c6cef784b1d0e0d64c2474b9dc5943287f2c6b
SHA512

468bc255cfcee32fa68aca26f78e2ba561949cd13c72a3db674ad55dbde2ed9c1e49222bdb1d9d87eda81316dc8f8c1cd23b34c45c91c3c4c5b0a6deec77909a
SSDEEP

6144:mLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQN:3TYe+D2jFu+iZoUFhAz

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
1660	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\hvtrffee\ImagePath = "C:\\Windows\\SysWOW64\\hvtrffee\\sstezayg.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe

Deletes itself 1 IoCs

pid	Process
60	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1908	sstezayg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1908 set thread context of 60	1908	sstezayg.exe	96

Launches sc.exe 3 IoCs

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

pid	Process
4188	sc.exe
640	sc.exe
3600	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
3764	3304	WerFault.exe	81
4852	1908	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	sstezayg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3304 wrote to memory of 1744	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	82
PID 3304 wrote to memory of 1744	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	82
PID 3304 wrote to memory of 1744	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	82
PID 3304 wrote to memory of 4556	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	84
PID 3304 wrote to memory of 4556	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	84
PID 3304 wrote to memory of 4556	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	84
PID 3304 wrote to memory of 4188	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	86
PID 3304 wrote to memory of 4188	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	86
PID 3304 wrote to memory of 4188	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	86
PID 3304 wrote to memory of 640	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	88
PID 3304 wrote to memory of 640	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	88
PID 3304 wrote to memory of 640	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	88
PID 3304 wrote to memory of 3600	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	90
PID 3304 wrote to memory of 3600	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	90
PID 3304 wrote to memory of 3600	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	90
PID 3304 wrote to memory of 1660	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	93
PID 3304 wrote to memory of 1660	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	93
PID 3304 wrote to memory of 1660	3304	2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe	93
PID 1908 wrote to memory of 60	1908	sstezayg.exe	96
PID 1908 wrote to memory of 60	1908	sstezayg.exe	96
PID 1908 wrote to memory of 60	1908	sstezayg.exe	96
PID 1908 wrote to memory of 60	1908	sstezayg.exe	96
PID 1908 wrote to memory of 60	1908	sstezayg.exe	96

C:\Users\Admin\AppData\Local\Temp\2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hvtrffee\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sstezayg.exe" C:\Windows\SysWOW64\hvtrffee\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hvtrffee binPath= "C:\Windows\SysWOW64\hvtrffee\sstezayg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hvtrffee "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hvtrffee
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3600
- 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:1660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 1196
  2⤵
  - Program crash
  PID:3764

C:\Windows\SysWOW64\hvtrffee\sstezayg.exe
C:\Windows\SysWOW64\hvtrffee\sstezayg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-09_c15b4cfd4cea02fc55d57af8bf070a36_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:60
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1908 -s 512
  2⤵
  - Program crash
  PID:4852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3304 -ip 3304
1⤵
PID:1464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1908 -ip 1908
1⤵
PID:4496

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\sstezayg.exe

Filesize
13.4MB

MD5
8cd92c62ff0ce9105f1e4d51aea8e9e5

SHA1
4865783c04724e04c7e99f87cac241c6777a58e3

SHA256
74e5130065cf4e275d089a8aeb8079cf142f0d82f9f86b492151b5115369af46

SHA512
cae15b40e0672a75a201344f5217dbb5dc90abb4bc48b85d102ab30502d120cb65f751823b04ac3e7b3a1ce986f4b755ea57d828b63038e4e9cf5dbbcfc4d91a

Download Submit
memory/60-10-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/60-22-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/60-21-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/60-20-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/60-14-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/1908-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1908-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1908-19-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3304-13-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/3304-17-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download
memory/3304-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3304-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3304-1-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/3304-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3304-2-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads