tofsee | f234e31303e9c4e0b680675af97d1d86923809c1edfceb3732d560b15fcd4fd6

General

Target

2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe
Size

13.0MB
MD5

7d70bebfafa8dfcdf62e4c39c754df0d
SHA1

926c63c7963ab84c5e1fef15fbd75f09834b22ac
SHA256

f234e31303e9c4e0b680675af97d1d86923809c1edfceb3732d560b15fcd4fd6
SHA512

2138409fa506ffffe5c2b0f2ed648ac4880d2ae15d869b8b5f4415e9c2115bb545087128090def3379d9026d2d965e100eb4a13e8f1eda0d24d7ce0eb7fc7314
SSDEEP

24576:qpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttA:+ooW

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
4980	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\kcwncsdy\ImagePath = "C:\\Windows\\SysWOW64\\kcwncsdy\\iewwtihv.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe

Deletes itself 1 IoCs

pid	Process
4188	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3068	iewwtihv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3068 set thread context of 4188	3068	iewwtihv.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2836	sc.exe
3628	sc.exe
2996	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4444	3484	WerFault.exe	81
1120	3068	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iewwtihv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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 3484 wrote to memory of 1824	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	82
PID 3484 wrote to memory of 1824	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	82
PID 3484 wrote to memory of 1824	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	82
PID 3484 wrote to memory of 5004	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	84
PID 3484 wrote to memory of 5004	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	84
PID 3484 wrote to memory of 5004	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	84
PID 3484 wrote to memory of 2836	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	86
PID 3484 wrote to memory of 2836	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	86
PID 3484 wrote to memory of 2836	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	86
PID 3484 wrote to memory of 3628	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	88
PID 3484 wrote to memory of 3628	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	88
PID 3484 wrote to memory of 3628	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	88
PID 3484 wrote to memory of 2996	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	90
PID 3484 wrote to memory of 2996	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	90
PID 3484 wrote to memory of 2996	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	90
PID 3484 wrote to memory of 4980	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	93
PID 3484 wrote to memory of 4980	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	93
PID 3484 wrote to memory of 4980	3484	2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe	93
PID 3068 wrote to memory of 4188	3068	iewwtihv.exe	98
PID 3068 wrote to memory of 4188	3068	iewwtihv.exe	98
PID 3068 wrote to memory of 4188	3068	iewwtihv.exe	98
PID 3068 wrote to memory of 4188	3068	iewwtihv.exe	98
PID 3068 wrote to memory of 4188	3068	iewwtihv.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kcwncsdy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iewwtihv.exe" C:\Windows\SysWOW64\kcwncsdy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kcwncsdy binPath= "C:\Windows\SysWOW64\kcwncsdy\iewwtihv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kcwncsdy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kcwncsdy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2996
- 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:4980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3484 -s 1204
  2⤵
  - Program crash
  PID:4444

C:\Windows\SysWOW64\kcwncsdy\iewwtihv.exe
C:\Windows\SysWOW64\kcwncsdy\iewwtihv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_7d70bebfafa8dfcdf62e4c39c754df0d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3068 -s 512
  2⤵
  - Program crash
  PID:1120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3484 -ip 3484
1⤵
PID:3004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3068 -ip 3068
1⤵
PID:4004

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\iewwtihv.exe

Filesize
13.7MB

MD5
0c2f9a02af99d66d8762f1b5a5376aa0

SHA1
b0296b46549fa06ac55c48cc03d8619a9cad9b35

SHA256
52c8cc6c6a40b4d4f0ce75ba669cad91133bdaf08fcd074e9e9d7d17543b6297

SHA512
2cd745e3e88346576cc6c90456cd3e265f35f1843075d6dfdc04d5977c582e58275b1c4060d8c0c4ddab670effafd55a3df0ecfe136bf1089bbc0e33d96262a7

Download Submit
memory/3068-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3068-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3068-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3068-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3484-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3484-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3484-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3484-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3484-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3484-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/4188-14-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/4188-16-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/4188-17-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads