tofsee | f405202646095edef5846fa1c75bfa27c489c80dce2b7ba9deaf4b6cd3d27f5f

General

Target

2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe
Size

14.2MB
MD5

4d8443a6e2de3d95f08b47195eb2049e
SHA1

02b019101b6d8b2d2368e04eb35ce8a0b8fdc2fe
SHA256

f405202646095edef5846fa1c75bfa27c489c80dce2b7ba9deaf4b6cd3d27f5f
SHA512

65772b434c1c0588cc361b65082b8993f830bbe3d934d3a1b1d3d9549d72e597d2a1415c9d7d43bd9f09d0c6891ae9747485b765ff5f47fda8236dd76a12832b
SSDEEP

24576:JEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ:Cfot

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
1856	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\mbdevwej\ImagePath = "C:\\Windows\\SysWOW64\\mbdevwej\\wskkhwvj.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe

Deletes itself 1 IoCs

pid	Process
2792	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4192	wskkhwvj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4192 set thread context of 2792	4192	wskkhwvj.exe	109

Launches sc.exe 3 IoCs

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

pid	Process
1048	sc.exe
624	sc.exe
2128	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
3772	3728	WerFault.exe	82
4036	4192	WerFault.exe	100

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	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wskkhwvj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3728 wrote to memory of 5052	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	84
PID 3728 wrote to memory of 5052	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	84
PID 3728 wrote to memory of 5052	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	84
PID 3728 wrote to memory of 1560	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	88
PID 3728 wrote to memory of 1560	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	88
PID 3728 wrote to memory of 1560	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	88
PID 3728 wrote to memory of 1048	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	90
PID 3728 wrote to memory of 1048	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	90
PID 3728 wrote to memory of 1048	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	90
PID 3728 wrote to memory of 624	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	96
PID 3728 wrote to memory of 624	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	96
PID 3728 wrote to memory of 624	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	96
PID 3728 wrote to memory of 2128	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	98
PID 3728 wrote to memory of 2128	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	98
PID 3728 wrote to memory of 2128	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	98
PID 3728 wrote to memory of 1856	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	101
PID 3728 wrote to memory of 1856	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	101
PID 3728 wrote to memory of 1856	3728	2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe	101
PID 4192 wrote to memory of 2792	4192	wskkhwvj.exe	109
PID 4192 wrote to memory of 2792	4192	wskkhwvj.exe	109
PID 4192 wrote to memory of 2792	4192	wskkhwvj.exe	109
PID 4192 wrote to memory of 2792	4192	wskkhwvj.exe	109
PID 4192 wrote to memory of 2792	4192	wskkhwvj.exe	109

C:\Users\Admin\AppData\Local\Temp\2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mbdevwej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wskkhwvj.exe" C:\Windows\SysWOW64\mbdevwej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mbdevwej binPath= "C:\Windows\SysWOW64\mbdevwej\wskkhwvj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mbdevwej "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mbdevwej
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2128
- 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:1856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3728 -s 1040
  2⤵
  - Program crash
  PID:3772

C:\Windows\SysWOW64\mbdevwej\wskkhwvj.exe
C:\Windows\SysWOW64\mbdevwej\wskkhwvj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-11_4d8443a6e2de3d95f08b47195eb2049e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4192
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 508
  2⤵
  - Program crash
  PID:4036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3728 -ip 3728
1⤵
PID:3332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4192 -ip 4192
1⤵
PID:1308

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\wskkhwvj.exe

Filesize
14.6MB

MD5
bbf008f9b3b1c71dda38c871c22a7915

SHA1
e8a91c3f8eb7048af26681ef51c1e099847db718

SHA256
fac5fac1caf507a0dec393a262a52d090d7425d473cf99a5071b162f47491c03

SHA512
9e8eab44b30a9a526f3ed27dfba31c7e5e75d6eca98f1c812aad6f6d121050bc645fc8e1e2a5f9fc994c6ac5b8a0424a1058f1520acc53e6a2540565e7e77996

Download Submit
memory/2792-14-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/2792-17-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/2792-16-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/3728-8-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/3728-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3728-2-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/3728-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3728-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3728-1-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/4192-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4192-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4192-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4192-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads